Fix typo "Syetem" -> "System"

https://github.com/XTLS/Xray-core/issues/6564#issuecomment-5150960771

Closes https://github.com/XTLS/Xray-core/issues/6564

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -7,22 +7,22 @@ body:
       description: |-
         Please check all of the following options to prove that you have read and understood the requirements, otherwise this issue will be closed.
       options:
+        - label: I have read all the comments in the issue template and ensured that this issue meet the requirements.
+          required: true
         - label: I confirm that I have read the documentation, understand the meaning of all the configuration items I wrote, and did not pile up seemingly useful options or default values.
           required: true
         - label: I provided the complete config and logs, rather than just providing the truncated parts based on my own judgment.
           required: true
         - label: I searched issues and did not find any similar issues.
           required: true
-  - type: input
-    attributes:
-      label: Version
-      description: Version of Xray-core
-    validations:
-      required: true
+        - label: The problem can be successfully reproduced in the latest Release
+          required: true
   - type: textarea
     attributes:
       label: Description
-      description: Please provide a detailed description of the error. And the information you think valuable.
+      description: |-
+        Please provide a detailed description of the error. And the information you think valuable.
+        If the problem occurs after the update, please provide the **specific** version
     validations:
       required: true
   - type: textarea
@@ -40,6 +40,8 @@ body:
         ### For config
         Please provide the configuration files that can reproduce the problem, including the server and client.
         Don't just paste a big exported config file here. Eliminate useless inbound/outbound, rules, options, this can help determine the problem, if you really want to get help.
+        After removing parts that do not affect reproduction, provide the actual running **complete** file.
+        meaning of complete: This config can be directly used to start the core, **not a truncated part of the config**. For fields like keys, use newly generated valid parameters that have not been actually used to fill in.
 
         ### For logs
         Please set the log level to debug and dnsLog to true first.
@@ -48,42 +50,29 @@ body:
         Provide the log of Xray-core, not the log output by the panel or other things.
 
         ### Finally
-        After removing parts that do not affect reproduction, provide the actual running **complete** file, do not only provide inbound or outbound or a few lines of logs based on your own judgment.
-        Put the content between the preset ```<details><pre><code>``` ```</code></pre></details>``` in the text box.
-        If the problem is very clear that only related to one end (such as core startup failure/crash after correctly writing the config according to the documents), N/A can be filled in for unnecessary areas below.
+        The specific content to be filled in each of the following text boxes needs to be placed between ```<details><pre><code>``` and ```</code></pre></details>```, like this
+        ```
+        <details><pre><code>
+        (config)
+        </code></pre></details>
+        ```
   - type: textarea
     attributes:
       label: Client config
-      value: |-
-        <details><pre><code>
-
-        </code></pre></details>
     validations:
       required: true
   - type: textarea
     attributes:
       label: Server config
-      value: |-
-        <details><pre><code>
-
-        </code></pre></details>
     validations:
       required: true
   - type: textarea
     attributes:
       label: Client log
-      value: |-
-        <details><pre><code>
-
-        </code></pre></details>
     validations:
       required: true
   - type: textarea
     attributes:
       label: Server log
-      value: |-
-        <details><pre><code>
-
-        </code></pre></details>
     validations:
       required: true

.github/ISSUE_TEMPLATE/bug_report_zh.yml

@@ -7,22 +7,22 @@ body:
       description: |-
         请勾选以下所有选项以证明您已经阅读并理解了以下要求，否则该 issue 将被关闭。
       options:
+        - label: 我读完了 issue 模板中的所有注释，确保填写符合要求。
+          required: true
         - label: 我保证阅读了文档，了解所有我编写的配置文件项的含义，而不是大量堆砌看似有用的选项或默认值。
           required: true
         - label: 我提供了完整的配置文件和日志，而不是出于自己的判断只给出截取的部分。
           required: true
-        - label: 我搜索了issues，没有发现已提出的类似问题。
+        - label: 我搜索了 issues, 没有发现已提出的类似问题。
+          required: true
+        - label: 问题在 Release 最新的版本上可以成功复现
           required: true
-  - type: input
-    attributes:
-      label: 版本
-      description: 使用的Xray-core版本
-    validations:
-      required: true
   - type: textarea
     attributes:
       label: 描述
-      description: 请提供错误的详细描述。以及你认为有价值的信息。
+      description: |-
+        请提供错误的详细描述。以及你认为有价值的信息。
+        如果问题在更新后出现，请提供**具体**出现问题的版本号。
     validations:
       required: true
   - type: textarea
@@ -40,6 +40,8 @@ body:
         ### 对于配置文件
         请提供可以重现问题的配置文件，包括服务端和客户端。
         不要直接在这里黏贴一大段导出的 config 文件。去掉无用的出入站、规则、选项，这可以帮助确定问题，如果你真的想得到帮助。
+        在去掉不影响复现的部分后，提供实际运行的**完整**文件。
+        完整的含义：可以直接使用这个配置启动核心，**不是截取的部分配置**。对于密钥等参数使用重新生成未实际使用的有效参数填充。
         
         ### 对于日志
         请先将日志等级设置为 debug, dnsLog 设置为true.
@@ -48,42 +50,29 @@ body:
         提供 Xray-core 的日志，而不是面板或者别的东西输出的日志。
 
         ### 最后
-        在去掉不影响复现的部分后，提供实际运行的**完整**文件，不要出于自己的判断只提供入站出站或者几行日志。
-        把内容放在文本框预置的 ```<details><pre><code>``` 和 ```</code></pre></details>``` 中间。
-        如果问题十分明确只出现在某一端(如按文档正确编写配置后核心启动失败/崩溃)，可以在下面不需要的项目填入N/A.
+        把下面的每格具体内容需要放在 ```<details><pre><code>``` 和 ```</code></pre></details>``` 中间，如
+        ```
+        <details><pre><code>
+        (config)
+        </code></pre></details>
+        ```
   - type: textarea
     attributes:
       label: 客户端配置
-      value: |-
-        <details><pre><code>
-
-        </code></pre></details>
     validations:
       required: true
   - type: textarea
     attributes:
       label: 服务端配置
-      value: |-
-        <details><pre><code>
-
-        </code></pre></details>
     validations:
       required: true
   - type: textarea
     attributes:
       label: 客户端日志
-      value: |-
-        <details><pre><code>
-
-        </code></pre></details>
     validations:
       required: true
   - type: textarea
     attributes:
       label: 服务端日志
-      value: |-
-        <details><pre><code>
-
-        </code></pre></details>
     validations:
       required: true

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,4 @@
+contact_links:
+  - name: Community Support and Questions
+    url: https://github.com/XTLS/Xray-core/discussions
+    about: Please ask and answer questions there. The issue tracker is for issues with core.

.github/build/friendly-filenames.json

@@ -29,6 +29,5 @@
   "openbsd-arm7": { "friendlyName": "openbsd-arm32-v7a" },
   "windows-386": { "friendlyName": "windows-32" },
   "windows-amd64": { "friendlyName": "windows-64" },
-  "windows-arm64": { "friendlyName": "windows-arm64-v8a" },
-  "windows-arm7": { "friendlyName": "windows-arm32-v7a" }
+  "windows-arm64": { "friendlyName": "windows-arm64-v8a" }
 }

.github/build/windows/xray_no_window.cmd

@@ -0,0 +1 @@
+powershell.exe -ExecutionPolicy Bypass -File ".\xray_no_window.ps1"

.github/build/windows/xray_no_window.ps1

@@ -0,0 +1 @@
+Start-Process -FilePath ".\xray.exe" -ArgumentList "-config .\config.json" -WindowStyle Hidden

.github/build/windows/xray_no_window.vbs

@@ -0,0 +1 @@
+CreateObject("Wscript.Shell").Run "xray.exe -config config.json",0

.github/docker/Dockerfile

@@ -1,22 +1,66 @@
-# syntax=docker/dockerfile:1
-FROM --platform=$BUILDPLATFORM golang:alpine AS build
+# syntax=docker/dockerfile:latest
+FROM --platform=$BUILDPLATFORM golang:latest AS build
+
+# Build xray-core
 WORKDIR /src
 COPY . .
-ARG TARGETOS TARGETARCH
-RUN GOOS=$TARGETOS GOARCH=$TARGETARCH CGO_ENABLED=0 go build -o xray -trimpath -ldflags "-s -w -buildid=" ./main
+ARG TARGETOS
+ARG TARGETARCH
+RUN GOOS=$TARGETOS GOARCH=$TARGETARCH CGO_ENABLED=0 go build -o xray -trimpath -buildvcs=false -gcflags="all=-l=4" -ldflags "-s -w -buildid=" ./main
 
-FROM --platform=${TARGETPLATFORM} alpine:latest
-WORKDIR /root
-COPY .github/docker/files/config.json /etc/xray/config.json
-COPY --from=build /src/xray /usr/bin/xray
-RUN set -ex \
-	&& apk add --no-cache tzdata ca-certificates \
-	&& mkdir -p /var/log/xray /usr/share/xray \
-    && chmod +x /usr/bin/xray \
-	&& wget -O /usr/share/xray/geosite.dat https://github.com/Loyalsoldier/v2ray-rules-dat/releases/latest/download/geosite.dat \
-	&& wget -O /usr/share/xray/geoip.dat https://github.com/Loyalsoldier/v2ray-rules-dat/releases/latest/download/geoip.dat
+# Download geodat into a staging directory
+ADD https://raw.githubusercontent.com/Loyalsoldier/v2ray-rules-dat/release/geoip.dat /tmp/geodat/geoip.dat
+ADD https://raw.githubusercontent.com/Loyalsoldier/v2ray-rules-dat/release/geosite.dat /tmp/geodat/geosite.dat
 
-VOLUME /etc/xray
-ENV TZ=Asia/Shanghai
-ENTRYPOINT [ "/usr/bin/xray" ]
-CMD [ "-config", "/etc/xray/config.json" ]
+RUN mkdir -p /tmp/empty
+
+# Create config files with empty JSON content
+RUN mkdir -p /tmp/usr/local/etc/xray
+RUN cat <<EOF >/tmp/usr/local/etc/xray/00_log.json
+{
+  "log": {
+    "error": "/var/log/xray/error.log",
+    "loglevel": "warning",
+    "access": "none",
+    "dnsLog": false
+  }
+}
+EOF
+RUN echo '{}' >/tmp/usr/local/etc/xray/01_api.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/02_dns.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/03_routing.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/04_policy.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/05_inbounds.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/06_outbounds.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/07_stats.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/08_fakedns.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/09_metrics.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/10_observatory.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/11_geodata.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/12_env.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/99_version.json
+
+# Create log files
+RUN mkdir -p /tmp/var/log/xray && touch \
+  /tmp/var/log/xray/access.log \
+  /tmp/var/log/xray/error.log
+
+# Build finally image
+FROM gcr.io/distroless/static:nonroot
+
+COPY --from=build --chown=0:0 --chmod=755 /src/xray /usr/local/bin/xray
+COPY --from=build --chown=65532:65532 --chmod=755 /tmp/empty /usr/local/share/xray
+COPY --from=build --chown=65532:65532 --chmod=644 /tmp/geodat/*.dat /usr/local/share/xray/
+COPY --from=build --chown=0:0 --chmod=755 /tmp/empty /usr/local/etc/xray
+COPY --from=build --chown=0:0 --chmod=644 /tmp/usr/local/etc/xray/*.json /usr/local/etc/xray/
+COPY --from=build --chown=0:0 --chmod=755 /tmp/empty /var/log/xray
+COPY --from=build --chown=65532:65532 --chmod=600 /tmp/var/log/xray/*.log /var/log/xray/
+
+VOLUME /usr/local/etc/xray
+VOLUME /var/log/xray
+
+ARG TZ=Etc/UTC
+ENV TZ=$TZ
+
+ENTRYPOINT [ "/usr/local/bin/xray" ]
+CMD [ "-confdir", "/usr/local/etc/xray/" ]

.github/docker/Dockerfile.usa

@@ -0,0 +1,75 @@
+# syntax=docker/dockerfile:latest
+FROM --platform=$BUILDPLATFORM golang:latest AS build
+
+# Build xray-core
+WORKDIR /src
+COPY . .
+ARG TARGETOS
+ARG TARGETARCH
+RUN GOOS=$TARGETOS GOARCH=$TARGETARCH CGO_ENABLED=0 go build -o xray -trimpath -buildvcs=false -gcflags="all=-l=4" -ldflags "-s -w -buildid=" ./main
+
+# Download geodat into a staging directory
+ADD https://raw.githubusercontent.com/Loyalsoldier/v2ray-rules-dat/release/geoip.dat /tmp/geodat/geoip.dat
+ADD https://raw.githubusercontent.com/Loyalsoldier/v2ray-rules-dat/release/geosite.dat /tmp/geodat/geosite.dat
+
+RUN mkdir -p /tmp/empty
+
+# Create config files with empty JSON content
+RUN mkdir -p /tmp/usr/local/etc/xray
+RUN cat <<EOF >/tmp/usr/local/etc/xray/00_log.json
+{
+  "log": {
+    "error": "/var/log/xray/error.log",
+    "loglevel": "warning",
+    "access": "none",
+    "dnsLog": false
+  }
+}
+EOF
+RUN echo '{}' >/tmp/usr/local/etc/xray/01_api.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/02_dns.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/03_routing.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/04_policy.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/05_inbounds.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/06_outbounds.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/07_stats.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/08_fakedns.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/09_metrics.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/10_observatory.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/11_geodata.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/12_env.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/99_version.json
+
+# Create log files
+RUN mkdir -p /tmp/var/log/xray && touch \
+  /tmp/var/log/xray/access.log \
+  /tmp/var/log/xray/error.log
+
+# Build finally image
+# Note on Distroless Base Image and Architecture Support:
+# - The official 'gcr.io/distroless/static' image provided by Google only supports a limited set of architectures for Linux:
+#   - linux/amd64
+#   - linux/arm/v7
+#   - linux/arm64/v8
+#   - linux/ppc64le
+#   - linux/s390x
+# - Upon inspection, the blob contents of the Distroless images across these architectures are nearly identical, with only minor differences in metadata (e.g., 'Architecture' field in the manifest).
+# - Due to this similarity in content, it is feasible to forcibly specify a single platform (e.g., '--platform=linux/amd64') for unsupported architectures, as the core image content remains compatible with statically compiled binaries like Go applications.
+FROM --platform=linux/amd64 gcr.io/distroless/static:nonroot
+
+COPY --from=build --chown=0:0 --chmod=755 /src/xray /usr/local/bin/xray
+COPY --from=build --chown=65532:65532 --chmod=755 /tmp/empty /usr/local/share/xray
+COPY --from=build --chown=65532:65532 --chmod=644 /tmp/geodat/*.dat /usr/local/share/xray/
+COPY --from=build --chown=0:0 --chmod=755 /tmp/empty /usr/local/etc/xray
+COPY --from=build --chown=0:0 --chmod=644 /tmp/usr/local/etc/xray/*.json /usr/local/etc/xray/
+COPY --from=build --chown=0:0 --chmod=755 /tmp/empty /var/log/xray
+COPY --from=build --chown=65532:65532 --chmod=600 /tmp/var/log/xray/*.log /var/log/xray/
+
+VOLUME /usr/local/etc/xray
+VOLUME /var/log/xray
+
+ARG TZ=Etc/UTC
+ENV TZ=$TZ
+
+ENTRYPOINT [ "/usr/local/bin/xray" ]
+CMD [ "-confdir", "/usr/local/etc/xray/" ]

.github/docker/files/config.json

@@ -1,18 +0,0 @@
-{
-  "inbounds": [{
-    "port": 9000,
-    "protocol": "vmess",
-    "settings": {
-      "clients": [
-        {
-          "id": "1eb6e917-774b-4a84-aff6-b058577c60a5",
-          "level": 1
-        }
-      ]
-    }
-  }],
-  "outbounds": [{
-    "protocol": "freedom",
-    "settings": {}
-  }]
-}

.github/workflows/docker.yml

@@ -1,48 +1,152 @@
-name: Build docker image
+name: Build and Push Docker Image
 
 on:
   release:
-    types: [published]
-  push:
-    branches:
-      - main
+    types:
+      - published
+      - released
+
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: "Docker image tag:"
+        required: true
+      latest:
+        description: "Set to latest"
+        type: boolean
+        default: false
 
 jobs:
-  build-image:
+  build-and-push:
+    if: (github.event.action != 'published') || (github.event.action == 'published' && github.event.release.prerelease == true)
     runs-on: ubuntu-latest
     permissions:
+      contents: read
       packages: write
+
     steps:
-      - uses: actions/checkout@v4
-      - name: Docker metadata
-        id: meta
-        uses: docker/metadata-action@v5
-        with:
-          images: ghcr.io/${{ github.repository_owner }}/xray-core
-          flavor: latest=true
-          tags: |
-            type=sha
-            type=ref,event=branch
-            type=ref,event=pr
-            type=semver,pattern={{version}}
+      - name: Set repository and image name to lowercase
+        env:
+          IMAGE_NAME: "${{ github.repository }}"
+        run: |
+          echo "IMAGE_NAME=${IMAGE_NAME,,}" >>${GITHUB_ENV}
+          echo "FULL_IMAGE_NAME=ghcr.io/${IMAGE_NAME,,}" >>${GITHUB_ENV}
+
+      - name: Validate and extract tag
+        run: |
+          SOURCE_TAG="${{ github.event.inputs.tag }}"
+          if [[ -z "$SOURCE_TAG" ]]; then
+            SOURCE_TAG="${{ github.ref_name }}"
+          fi
+          if [[ -z "$SOURCE_TAG" ]]; then
+            SOURCE_TAG="${{ github.event.release.tag_name }}"
+          fi
+
+          if [[ -z "$SOURCE_TAG" ]]; then
+            echo "Error: Could not determine a valid tag source. Input tag and context tag (github.ref_name) are both empty."
+            exit 1
+          fi
+
+          if [[ "$SOURCE_TAG" =~ ^v[0-9]+\.[0-9] ]]; then
+            IMAGE_TAG="${SOURCE_TAG#v}"
+          else
+            IMAGE_TAG="$SOURCE_TAG"
+          fi
+
+          echo "Docker image tag: '$IMAGE_TAG'."
+          echo "IMAGE_TAG=$IMAGE_TAG" >>${GITHUB_ENV}
+
+          LATEST=false
+          if [[ "${{ github.event_name }}" == "release" && "${{ github.event.release.prerelease }}" == "false" ]] || [[ "${{ github.event_name }}" == "workflow_dispatch" && "${{ github.event.inputs.latest }}" == "true" ]]; then
+            LATEST=true
+          fi
+
+          echo "Latest: '$LATEST'."
+          echo "LATEST=$LATEST" >>${GITHUB_ENV}
+
+          NEWEST=false
+          if [[ "${{ github.event_name }}" == "release" ]]; then
+            NEWEST=true
+          fi
+
+          echo "Newest: '$NEWEST'."
+          echo "NEWEST=$NEWEST" >>${GITHUB_ENV}
+
+      - name: Checkout code
+        uses: actions/checkout@v7
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v4
+
       - name: Login to GitHub Container Registry
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
-      - # Add support for more platforms with QEMU (optional)
-        # https://github.com/docker/setup-qemu-action
-        name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-      - name: Build and push
-        uses: docker/build-push-action@v6
+
+      - name: Build Docker image (main architectures)
+        id: build_main_arches
+        uses: docker/build-push-action@v7
         with:
           context: .
-          platforms: linux/amd64,linux/arm64
           file: .github/docker/Dockerfile
-          push: true
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
+          platforms: |
+            linux/amd64
+            linux/arm/v7
+            linux/arm64/v8
+            linux/ppc64le
+            linux/s390x
+          provenance: false
+          outputs: type=image,name=${{ env.FULL_IMAGE_NAME }},push-by-digest=true,name-canonical=true,push=true
+
+      - name: Build Docker image (additional architectures)
+        id: build_additional_arches
+        uses: docker/build-push-action@v7
+        with:
+          context: .
+          file: .github/docker/Dockerfile.usa
+          platforms: |
+            linux/386
+            linux/arm/v6
+            linux/riscv64
+            linux/loong64
+          provenance: false
+          outputs: type=image,name=${{ env.FULL_IMAGE_NAME }},push-by-digest=true,name-canonical=true,push=true
+
+      - name: Create manifest list and push
+        run: |
+          echo "Creating multi-arch manifest with tag: '${{ env.FULL_IMAGE_NAME }}:${{ env.IMAGE_TAG }}'."
+          docker buildx imagetools create \
+            --tag ${{ env.FULL_IMAGE_NAME }}:${{ env.IMAGE_TAG }} \
+            ${{ env.FULL_IMAGE_NAME }}@${{ steps.build_main_arches.outputs.digest }} \
+            ${{ env.FULL_IMAGE_NAME }}@${{ steps.build_additional_arches.outputs.digest }}
+
+          if [[ "${{ env.LATEST }}" == "true" ]]; then
+            echo "Adding 'latest' tag to manifest: '${{ env.FULL_IMAGE_NAME }}:latest'."
+            docker buildx imagetools create \
+            --tag ${{ env.FULL_IMAGE_NAME }}:latest \
+            ${{ env.FULL_IMAGE_NAME }}:${{ env.IMAGE_TAG }}
+          fi
+
+          if [[ "${{ env.NEWEST }}" == "true" ]]; then
+            echo "Adding 'pre-release' tag to manifest: '${{ env.FULL_IMAGE_NAME }}:pre-release'."
+            docker buildx imagetools create \
+            --tag ${{ env.FULL_IMAGE_NAME }}:pre-release \
+            ${{ env.FULL_IMAGE_NAME }}:${{ env.IMAGE_TAG }}
+          fi
+
+      - name: Inspect image
+        run: |
+          docker buildx imagetools inspect ${{ env.FULL_IMAGE_NAME }}:${{ env.IMAGE_TAG }}
+
+          if [[ "${{ env.LATEST }}" == "true" ]]; then
+            docker buildx imagetools inspect ${{ env.FULL_IMAGE_NAME }}:latest
+          fi
+
+          if [[ "${{ env.NEWEST }}" == "true" ]]; then
+            docker buildx imagetools inspect ${{ env.FULL_IMAGE_NAME }}:pre-release
+          fi

.github/workflows/release-win7.yml

@@ -0,0 +1,184 @@
+name: Build and Release for Windows 7
+
+on:
+  workflow_dispatch:
+  release:
+    types: [published]
+  push:
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+jobs:
+  check-assets:
+    runs-on: ubuntu-latest
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
+    steps:
+      - name: Restore Geodat Cache
+        uses: actions/cache/restore@v6
+        with:
+          path: resources
+          key: xray-geodat-
+
+      - name: Restore Wintun Cache
+        uses: actions/cache/restore@v6
+        with:
+          path: resources
+          key: xray-wintun-
+
+      - name: Check Assets Existence
+        id: check-assets
+        run: |
+          [ -d 'resources' ] || mkdir resources
+          LIST=('geoip.dat' 'geosite.dat')
+          for FILE_NAME in "${LIST[@]}"
+          do
+            echo -e "Checking ${FILE_NAME}..."
+            if [ -s "./resources/${FILE_NAME}" ]; then
+              echo -e "${FILE_NAME} exists."
+            else
+              echo -e "${FILE_NAME} does not exist."
+              echo "missing=true" >> $GITHUB_OUTPUT
+              break
+            fi
+          done
+          LIST=('amd64' 'x86')
+          for ARCHITECTURE in "${LIST[@]}"
+          do
+            echo -e "Checking wintun.dll for ${ARCHITECTURE}..."
+            if [ -s "./resources/wintun/bin/${ARCHITECTURE}/wintun.dll" ]; then
+              echo -e "wintun.dll for ${ARCHITECTURE} exists."
+            else
+              echo -e "wintun.dll for ${ARCHITECTURE} is missing."
+              echo "missing=true" >> $GITHUB_OUTPUT
+              break
+            fi
+          done
+
+      - name: Sleep for 90 seconds if Assets Missing
+        if: steps.check-assets.outputs.missing == 'true'
+        run: sleep 90
+
+  build:
+    needs: check-assets
+    permissions:
+      contents: write
+    strategy:
+      matrix:
+        include:
+          # BEGIN Windows 7
+          - goos: windows
+            goarch: amd64
+            assetname: win7-64
+          - goos: windows
+            goarch: 386
+            assetname: win7-32
+          # END Windows 7
+      fail-fast: false
+
+    runs-on: ubuntu-latest
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
+    env:
+      GOOS: ${{ matrix.goos}}
+      GOARCH: ${{ matrix.goarch }}
+      CGO_ENABLED: 0
+    steps:
+      - name: Checkout codebase
+        uses: actions/checkout@v7
+
+      - name: Show workflow information
+        run: |
+          _NAME=${{ matrix.assetname }}
+          echo "GOOS: ${{ matrix.goos }}, GOARCH: ${{ matrix.goarch }}, RELEASE_NAME: $_NAME"
+          echo "ASSET_NAME=$_NAME" >> $GITHUB_ENV
+
+      - name: Set up Go
+        uses: actions/setup-go@v7
+        with:
+          go-version-file: go.mod
+          check-latest: true
+
+      - name: Setup patched builder
+        run: |
+          GOSDK=$(go env GOROOT)
+          rm -r $GOSDK/*
+          cd $GOSDK
+          curl -O -L -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" https://github.com/XTLS/go-win7/releases/latest/download/go-for-win7-linux-amd64.zip
+          unzip ./go-for-win7-linux-amd64.zip -d $GOSDK
+          rm ./go-for-win7-linux-amd64.zip
+
+      - name: Get project dependencies
+        run: go mod download
+
+      - name: Build Xray
+        run: |
+          mkdir -p build_assets
+          COMMID=$(git describe --always --dirty)
+          echo 'Building Xray for Windows 7...'
+          go build -o build_assets/xray.exe -trimpath -buildvcs=false -gcflags="all=-l=4" -ldflags="-X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
+          # The line below is for without running conhost.exe version. Commented for not being used. Provided for reference.
+          # go build -o build_assets/wxray.exe -trimpath -buildvcs=false -gcflags="all=-l=4" -ldflags="-H windowsgui -X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
+
+      - name: Restore Geodat Cache
+        uses: actions/cache/restore@v6
+        with:
+          path: resources
+          key: xray-geodat-
+
+      - name: Restore Wintun Cache
+        uses: actions/cache/restore@v6
+        with:
+          path: resources
+          key: xray-wintun-
+
+      - name: Add additional assets into package
+        run: |
+          mv -f resources/geo* build_assets/
+          if [[ ${GOOS} == 'windows' ]]; then
+            cp .github/build/windows/* build_assets/
+          fi
+          if [[ ${GOOS} == 'windows' ]]; then
+            echo 'Adding Wintun into packages'
+            if [[ ${GOARCH} == 'amd64' ]]; then
+              mv resources/wintun/bin/amd64/wintun.dll build_assets/
+            fi
+            if [[ ${GOARCH} == '386' ]]; then
+              mv resources/wintun/bin/x86/wintun.dll build_assets/
+            fi
+            mv resources/wintun/LICENSE.txt build_assets/LICENSE-Wintun
+          fi
+
+      - name: Copy README.md & LICENSE
+        run: |
+          cp ${GITHUB_WORKSPACE}/README.md ./build_assets/README.md
+          cp ${GITHUB_WORKSPACE}/LICENSE ./build_assets/LICENSE
+
+      - name: Create ZIP archive
+        if: github.event_name == 'release'
+        shell: bash
+        run: |
+          pushd build_assets || exit 1
+          touch -mt $(date +%Y01010000) *
+          zip -9vr ../Xray-${{ env.ASSET_NAME }}.zip .
+          popd || exit 1
+          FILE=./Xray-${{ env.ASSET_NAME }}.zip
+          DGST=$FILE.dgst
+          for METHOD in {"md5","sha1","sha256","sha512"}
+          do
+            openssl dgst -$METHOD $FILE | sed 's/([^)]*)//g' >>$DGST
+          done
+
+      - name: Upload binaries to release
+        uses: svenstaro/upload-release-action@v2
+        if: github.event_name == 'release'
+        with:
+          repo_token: ${{ secrets.GITHUB_TOKEN }}
+          file: ./Xray-${{ env.ASSET_NAME }}.zip*
+          tag: ${{ github.ref }}
+          file_glob: true
+
+      - name: Upload files to Artifacts
+        uses: actions/upload-artifact@v7
+        with:
+          name: Xray-${{ env.ASSET_NAME }}
+          path: |
+            ./build_assets/*

.github/workflows/release.yml

@@ -1,76 +1,80 @@
 name: Build and Release
 
-# NOTE: This Github Actions file depends on the Makefile.
-#       Building the correct package requires the correct binaries generated by the Makefile. To 
-#       ensure the correct output, the Makefile must accept the appropriate input and compile the 
-#       correct file with the correct name. If you need to modify this file, please ensure it won't 
-#       disrupt the Makefile.
-
 on:
   workflow_dispatch:
   release:
     types: [published]
   push:
-    branches:
-      - main
-    paths:
-      - "**/*.go"
-      - "go.mod"
-      - "go.sum"
-      - ".github/workflows/release.yml"
   pull_request:
     types: [opened, synchronize, reopened]
-    paths:
-      - "**/*.go"
-      - "go.mod"
-      - "go.sum"
-      - ".github/workflows/release.yml"
+
 jobs:
-  prepare:
+  check-assets:
     runs-on: ubuntu-latest
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
     steps:
-      - name: Restore Cache
-        uses: actions/cache/restore@v4
+      - name: Restore Geodat Cache
+        uses: actions/cache/restore@v6
         with:
           path: resources
           key: xray-geodat-
 
-      - name: Update Geodat
-        id: update
-        uses: nick-fields/retry@v3
-        with:
-          timeout_minutes: 60
-          retry_wait_seconds: 60
-          max_attempts: 60
-          command: |
-            [ -d 'resources' ] || mkdir resources
-            LIST=('geoip geoip geoip' 'domain-list-community dlc geosite')
-            for i in "${LIST[@]}"
-            do
-              INFO=($(echo $i | awk 'BEGIN{FS=" ";OFS=" "} {print $1,$2,$3}'))
-              FILE_NAME="${INFO[2]}.dat"
-              echo -e "Verifying HASH key..."
-              HASH="$(curl -sL "https://raw.githubusercontent.com/v2fly/${INFO[0]}/release/${INFO[1]}.dat.sha256sum" | awk -F ' ' '{print $1}')"
-              if [ -s "./resources/${FILE_NAME}" ] && [ "$(sha256sum "./resources/${FILE_NAME}" | awk -F ' ' '{print $1}')" == "${HASH}" ]; then
-                  continue
-              else
-                  echo -e "Downloading https://raw.githubusercontent.com/v2fly/${INFO[0]}/release/${INFO[1]}.dat..."
-                  curl -L "https://raw.githubusercontent.com/v2fly/${INFO[0]}/release/${INFO[1]}.dat" -o ./resources/${FILE_NAME}
-                  echo -e "Verifying HASH key..."
-                  [ "$(sha256sum "./resources/${FILE_NAME}" | awk -F ' ' '{print $1}')" == "${HASH}" ] || { echo -e "The HASH key of ${FILE_NAME} does not match cloud one."; exit 1; }
-                  echo "unhit=true" >> $GITHUB_OUTPUT
-              fi
-            done
-
-      - name: Save Cache
-        uses: actions/cache/save@v4
-        if: ${{ steps.update.outputs.unhit }}
+      - name: Restore Wintun Cache
+        uses: actions/cache/restore@v6
         with:
           path: resources
-          key: xray-geodat-${{ github.sha }}-${{ github.run_number }}
+          key: xray-wintun-
+
+      - name: Check Assets Existence
+        id: check-assets
+        run: |
+          [ -d 'resources' ] || mkdir resources
+          LIST=('geoip.dat' 'geosite.dat')
+          for FILE_NAME in "${LIST[@]}"
+          do
+            echo -e "Checking ${FILE_NAME}..."
+            if [ -s "./resources/${FILE_NAME}" ]; then
+              echo -e "${FILE_NAME} exists."
+            else
+              echo -e "${FILE_NAME} does not exist."
+              echo "missing=true" >> $GITHUB_OUTPUT
+              break
+            fi
+          done
+          LIST=('amd64' 'x86' 'arm64')
+          for ARCHITECTURE in "${LIST[@]}"
+          do
+            echo -e "Checking wintun.dll for ${ARCHITECTURE}..."
+            if [ -s "./resources/wintun/bin/${ARCHITECTURE}/wintun.dll" ]; then
+              echo -e "wintun.dll for ${ARCHITECTURE} exists."
+            else
+              echo -e "wintun.dll for ${ARCHITECTURE} is missing."
+              echo "missing=true" >> $GITHUB_OUTPUT
+              break
+            fi
+          done
+
+      - name: Trigger Asset Update Workflow if Assets Missing
+        if: steps.check-assets.outputs.missing == 'true'
+        uses: actions/github-script@v9
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            const { owner, repo } = context.repo;
+            await github.rest.actions.createWorkflowDispatch({
+              owner,
+              repo,
+              workflow_id: 'scheduled-assets-update.yml',
+              ref: context.ref
+            });
+            console.log('Triggered scheduled-assets-update.yml due to missing assets on branch:', context.ref);
+
+      - name: Sleep for 90 seconds if Assets Missing
+        if: steps.check-assets.outputs.missing == 'true'
+        run: sleep 90
 
   build:
-    needs: prepare
+    needs: check-assets
     permissions:
       contents: write
     strategy:
@@ -78,12 +82,13 @@ jobs:
         # Include amd64 on all platforms.
         goos: [windows, freebsd, openbsd, linux, darwin]
         goarch: [amd64, 386]
+        patch-assetname: [""]
         exclude:
           # Exclude i386 on darwin
           - goarch: 386
             goos: darwin
         include:
-          # BEIGIN MacOS ARM64
+          # BEGIN MacOS ARM64
           - goos: darwin
             goarch: arm64
           # END MacOS ARM64
@@ -102,12 +107,14 @@ jobs:
           - goos: android
             goarch: arm64
           # END Android ARM 8
+          # BEGIN Android AMD64
+          - goos: android
+            goarch: amd64
+            patch-assetname: android-amd64
+          # END Android AMD64
           # Windows ARM
           - goos: windows
             goarch: arm64
-          - goos: windows
-            goarch: arm
-            goarm: 7
           # BEGIN Other architectures
           # BEGIN riscv64 & ARM64 & LOONG64
           - goos: linux
@@ -155,6 +162,7 @@ jobs:
       fail-fast: false
 
     runs-on: ubuntu-latest
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
     env:
       GOOS: ${{ matrix.goos }}
       GOARCH: ${{ matrix.goarch }}
@@ -162,38 +170,95 @@ jobs:
       CGO_ENABLED: 0
     steps:
       - name: Checkout codebase
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
 
-      - name: Show workflow information 
+      - name: Set up NDK
+        if: matrix.goos == 'android'
         run: |
-          export _NAME=$(jq ".[\"$GOOS-$GOARCH$GOARM$GOMIPS\"].friendlyName" -r < .github/build/friendly-filenames.json)
+          wget -qO android-ndk.zip https://dl.google.com/android/repository/android-ndk-r28b-linux.zip
+          unzip android-ndk.zip
+          rm android-ndk.zip
+          declare -A arches=(
+            ["amd64"]="x86_64-linux-android24-clang"
+            ["arm64"]="aarch64-linux-android24-clang"
+          )
+          echo CC="$(realpath android-ndk-*/toolchains/llvm/prebuilt/linux-x86_64/bin)/${arches[${{ matrix.goarch }}]}" >> $GITHUB_ENV
+          echo CGO_ENABLED=1 >> $GITHUB_ENV
+
+      - name: Show workflow information
+        run: |
+          _NAME=${{ matrix.patch-assetname }}
+          [ -n "$_NAME" ] || _NAME=$(jq ".[\"$GOOS-$GOARCH$GOARM$GOMIPS\"].friendlyName" -r < .github/build/friendly-filenames.json)
           echo "GOOS: $GOOS, GOARCH: $GOARCH, GOARM: $GOARM, GOMIPS: $GOMIPS, RELEASE_NAME: $_NAME"
           echo "ASSET_NAME=$_NAME" >> $GITHUB_ENV
 
       - name: Set up Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v7
         with:
           go-version-file: go.mod
           check-latest: true
 
       - name: Get project dependencies
         run: go mod download
-      
+
       - name: Build Xray
         run: |
           mkdir -p build_assets
-          make
-          find . -maxdepth 1 -type f -regex './\(wxray\|xray\|xray_softfloat\)\(\|.exe\)' -exec mv {} ./build_assets/ \;
+          COMMID=$(git describe --always --dirty)
+          if [[ ${GOOS} == 'windows' ]]; then
+            echo 'Building Xray for Windows...'
+            go build -o build_assets/xray.exe -trimpath -buildvcs=false -gcflags="all=-l=4" -ldflags="-X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
+            # The line below is for without running conhost.exe version. Commented for not being used. Provided for reference.
+            # go build -o build_assets/wxray.exe -trimpath -buildvcs=false -gcflags="all=-l=4" -ldflags="-H windowsgui -X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
+          elif [[ ${GOOS} == 'android' ]]; then
+            echo 'Building Xray for Android...'
+            go build -o build_assets/xray -trimpath -buildvcs=false -gcflags="all=-l=4" -ldflags="-X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid= -checklinkname=0" -v ./main
+          else
+            echo 'Building Xray...'
+            if [[ ${GOARCH} == 'mips' || ${GOARCH} == 'mipsle' ]]; then
+              go build -o build_assets/xray -trimpath -buildvcs=false -gcflags="-l=4" -ldflags="-X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
+              echo 'Building soft-float Xray for MIPS/MIPSLE 32-bit...'
+              GOMIPS=softfloat go build -o build_assets/xray_softfloat -trimpath -buildvcs=false -gcflags="-l=4" -ldflags="-X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
+            else
+              go build -o build_assets/xray -trimpath -buildvcs=false -gcflags="all=-l=4" -ldflags="-X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
+            fi
+          fi
 
-      - name: Restore Cache
-        uses: actions/cache/restore@v4
+      - name: Restore Geodat Cache
+        uses: actions/cache/restore@v6
         with:
           path: resources
           key: xray-geodat-
 
+      - name: Restore Wintun Cache
+        if: matrix.goos == 'windows'
+        uses: actions/cache/restore@v6
+        with:
+          path: resources
+          key: xray-wintun-
+
+      - name: Add additional assets into package
+        run: |
+          mv -f resources/geo* build_assets/
+          if [[ ${GOOS} == 'windows' ]]; then
+            cp .github/build/windows/* build_assets/
+          fi
+          if [[ ${GOOS} == 'windows' ]]; then
+            echo 'Adding Wintun into packages'
+            if [[ ${GOARCH} == 'amd64' ]]; then
+              mv resources/wintun/bin/amd64/wintun.dll build_assets/
+            fi
+            if [[ ${GOARCH} == '386' ]]; then
+              mv resources/wintun/bin/x86/wintun.dll build_assets/
+            fi
+            if [[ ${GOARCH} == 'arm64' ]]; then
+              mv resources/wintun/bin/arm64/wintun.dll build_assets/
+            fi
+            mv resources/wintun/LICENSE.txt build_assets/LICENSE-Wintun
+          fi
+
       - name: Copy README.md & LICENSE
         run: |
-          mv -f resources/* build_assets
           cp ${GITHUB_WORKSPACE}/README.md ./build_assets/README.md
           cp ${GITHUB_WORKSPACE}/LICENSE ./build_assets/LICENSE
 
@@ -212,17 +277,6 @@ jobs:
             openssl dgst -$METHOD $FILE | sed 's/([^)]*)//g' >>$DGST
           done
 
-      - name: Change the name
-        run: |
-          mv build_assets Xray-${{ env.ASSET_NAME }}
-
-      - name: Upload files to Artifacts
-        uses: actions/upload-artifact@v4
-        with:
-          name: Xray-${{ env.ASSET_NAME }}
-          path: |
-            ./Xray-${{ env.ASSET_NAME }}/*
-
       - name: Upload binaries to release
         uses: svenstaro/upload-release-action@v2
         if: github.event_name == 'release'
@@ -231,3 +285,10 @@ jobs:
           file: ./Xray-${{ env.ASSET_NAME }}.zip*
           tag: ${{ github.ref }}
           file_glob: true
+
+      - name: Upload files to Artifacts
+        uses: actions/upload-artifact@v7
+        with:
+          name: Xray-${{ env.ASSET_NAME }}
+          path: |
+            ./build_assets/*

.github/workflows/scheduled-assets-update.yml

@@ -0,0 +1,136 @@
+name: Scheduled assets update
+
+# NOTE: This Github Actions is required by other actions, for preparing other packaging assets in a
+#       routine manner, for example: GeoIP/GeoSite.
+#       Currently updating:
+#       - Geodat (GeoIP/Geosite)
+#       - Wintun (wintun.dll)
+
+on:
+  workflow_dispatch:
+  schedule:
+    # Update GeoData on every day (22:30 UTC)
+    - cron: "30 22 * * *"
+  push:
+    # Prevent triggering update request storm
+    paths:
+      - ".github/workflows/scheduled-assets-update.yml"
+  pull_request:
+    # Prevent triggering update request storm
+    paths:
+      - ".github/workflows/scheduled-assets-update.yml"
+
+jobs:
+  geodat:
+    if: github.event.schedule == '30 22 * * *' || github.event_name == 'push' || github.event_name == 'pull_request' || github.event_name == 'workflow_dispatch'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Restore Geodat Cache
+        uses: actions/cache/restore@v6
+        with:
+          path: resources
+          key: xray-geodat-
+
+      - name: Update Geodat
+        id: update
+        uses: nick-fields/retry@v4
+        with:
+          timeout_minutes: 60
+          retry_wait_seconds: 60
+          max_attempts: 60
+          command: |
+            [ -d 'resources' ] || mkdir resources
+            LIST=('Loyalsoldier v2ray-rules-dat geoip geoip' 'Loyalsoldier v2ray-rules-dat geosite geosite')
+            for i in "${LIST[@]}"
+            do
+              INFO=($(echo $i | awk 'BEGIN{FS=" ";OFS=" "} {print $1,$2,$3,$4}'))
+              FILE_NAME="${INFO[3]}.dat"
+              echo -e "Verifying HASH key..."
+              HASH="$(curl -sL -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" "https://raw.githubusercontent.com/${INFO[0]}/${INFO[1]}/release/${INFO[2]}.dat.sha256sum" | awk -F ' ' '{print $1}')"
+              if [ -s "./resources/${FILE_NAME}" ] && [ "$(sha256sum "./resources/${FILE_NAME}" | awk -F ' ' '{print $1}')" == "${HASH}" ]; then
+                  continue
+              else
+                  echo -e "Downloading https://raw.githubusercontent.com/${INFO[0]}/${INFO[1]}/release/${INFO[2]}.dat..."
+                  curl -L -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" "https://raw.githubusercontent.com/${INFO[0]}/${INFO[1]}/release/${INFO[2]}.dat" -o ./resources/${FILE_NAME}
+                  echo -e "Verifying HASH key..."
+                  [ "$(sha256sum "./resources/${FILE_NAME}" | awk -F ' ' '{print $1}')" == "${HASH}" ] || { echo -e "The HASH key of ${FILE_NAME} does not match cloud one."; exit 1; }
+                  echo "unhit=true" >> $GITHUB_OUTPUT
+              fi
+            done
+
+      - name: Save Geodat Cache
+        uses: actions/cache/save@v6
+        if: ${{ steps.update.outputs.unhit }}
+        with:
+          path: resources
+          key: xray-geodat-${{ github.sha }}-${{ github.run_number }}
+
+  wintun:
+    if: github.event.schedule == '30 22 * * *' || github.event_name == 'push' || github.event_name == 'pull_request' || github.event_name == 'workflow_dispatch'
+    runs-on: ubuntu-latest
+    env:
+      ASSETVER: 0.14.1
+      ASSETHASH: 07c256185d6ee3652e09fa55c0b673e2624b565e02c4b9091c79ca7d2f24ef51
+    steps:
+      - name: Restore Wintun Cache
+        uses: actions/cache/restore@v6
+        with:
+          path: resources
+          key: xray-wintun-
+
+      - name: Force downloading if run manually or on file update
+        if: github.event_name == 'workflow_dispatch' || github.event_name == 'push'
+        run: |
+          echo "FORCE_UPDATE=true" >> $GITHUB_ENV
+
+      - name: Update Wintun
+        id: update
+        uses: nick-fields/retry@v4
+        with:
+          timeout_minutes: 60
+          retry_wait_seconds: 60
+          max_attempts: 60
+          command: |
+            [ -d 'resources' ] || mkdir resources
+            LIST=('amd64' 'x86' 'arm64')
+            for ARCHITECTURE in "${LIST[@]}"
+            do
+              FILE_PATH="resources/wintun/bin/${ARCHITECTURE}/wintun.dll"
+              echo -e "Checking if wintun.dll for ${ARCHITECTURE} exists..."
+              if [ -s "./resources/wintun/bin/${ARCHITECTURE}/wintun.dll" ]; then
+                  echo -e "wintun.dll for ${ARCHITECTURE} exists"
+              else
+                  echo -e "wintun.dll for ${ARCHITECTURE} is missing"
+                  missing=true
+              fi
+            done
+            if [ -s "./resources/wintun/LICENSE.txt" ]; then
+              echo -e "LICENSE for Wintun exists"
+            else
+              echo -e "LICENSE for Wintun is missing"
+              missing=true
+            fi
+            if [[ -v FORCE_UPDATE ]]; then
+              missing=true
+            fi
+            if [[ "$missing" == true ]]; then
+              FILENAME=wintun.zip
+              DOWNLOAD_FILE=wintun-${ASSETVER}.zip
+              echo -e "Downloading https://www.wintun.net/builds/${DOWNLOAD_FILE}..."
+              curl -L "https://www.wintun.net/builds/${DOWNLOAD_FILE}" -o "${FILENAME}"
+              if [[ "$(sha256sum "./${FILENAME}" | awk -F ' ' '{print $1}')" == "${ASSETHASH}" ]]; then
+                echo -e "Unpacking wintun..."
+                unzip -u ${FILENAME} -d resources/
+                echo "unhit=true" >> $GITHUB_OUTPUT
+              else
+                echo -e "Digest of ${FILENAME} mismatch."
+                exit 1
+              fi
+            fi
+
+      - name: Save Wintun Cache
+        uses: actions/cache/save@v6
+        if: ${{ steps.update.outputs.unhit }}
+        with:
+          path: resources
+          key: xray-wintun-${{ github.sha }}-${{ github.run_number }}

.github/workflows/test.yml

@@ -1,24 +1,79 @@
-name: Test
+name: Tests and Checkings
 
 on:
   push:
-    branches:
-      - main
-    paths:
-      - "**/*.go"
-      - "go.mod"
-      - "go.sum"
-      - ".github/workflows/*.yml"
   pull_request:
     types: [opened, synchronize, reopened]
-    paths:
-      - "**/*.go"
-      - "go.mod"
-      - "go.sum"
-      - ".github/workflows/*.yml"
 
 jobs:
+  check-assets:
+    runs-on: ubuntu-latest
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
+    steps:
+      - name: Restore Geodat Cache
+        uses: actions/cache/restore@v6
+        with:
+          path: resources
+          key: xray-geodat-
+      - name: Check Assets Existence
+        id: check-assets
+        run: |
+          [ -d 'resources' ] || mkdir resources
+          LIST=('geoip.dat' 'geosite.dat')
+          for FILE_NAME in "${LIST[@]}"
+          do
+            echo -e "Checking ${FILE_NAME}..."
+            if [ -s "./resources/${FILE_NAME}" ]; then
+              echo -e "${FILE_NAME} exists."
+            else
+              echo -e "${FILE_NAME} does not exist."
+              echo "missing=true" >> $GITHUB_OUTPUT
+              break
+            fi
+          done
+      - name: Sleep for 90 seconds if Assets Missing
+        if: steps.check-assets.outputs.missing == 'true'
+        run: sleep 90
+
+  check-proto:
+    runs-on: ubuntu-latest
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
+    steps:
+      - name: Checkout codebase
+        uses: actions/checkout@v7
+      - name: Check Proto Version Header
+        run: |
+          head -n 4 core/config.pb.go > ref.txt
+          find . -name "*.pb.go" ! -name "*_grpc.pb.go" -print0 | while IFS= read -r -d '' file; do
+            if ! cmp -s ref.txt <(head -n 4 "$file"); then
+              echo "Error: Header mismatch in $file"
+              head -n 4 "$file"
+              exit 1
+            fi
+          done
+
+  check-format:
+    runs-on: ubuntu-latest
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
+    permissions:
+      contents: read
+    steps:
+      - name: Checkout codebase
+        uses: actions/checkout@v7
+      - name: Set up Go
+        uses: actions/setup-go@v7
+        with:
+          go-version-file: go.mod
+          check-latest: true
+          cache: false
+      - name: Check Format
+        run: |
+          go install -v mvdan.cc/gofumpt@latest
+          go run ./infra/vformat/main.go -mode check -pwd ./
+
   test:
+    needs: check-assets
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
     permissions:
       contents: read
     runs-on: ${{ matrix.os }}
@@ -28,14 +83,14 @@ jobs:
         os: [windows-latest, ubuntu-latest, macos-latest]
     steps:
       - name: Checkout codebase
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
       - name: Set up Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v7
         with:
           go-version-file: go.mod
           check-latest: true
-      - name: Restore Cache
-        uses: actions/cache/restore@v4
+      - name: Restore Geodat Cache
+        uses: actions/cache/restore@v6
         with:
           path: resources
           key: xray-geodat-

.gitignore

@@ -11,13 +11,23 @@
 # Output of the go coverage tool, specifically when used with LiteIDE
 *.out
 
-# Dependency directories (remove the comment below to include it)
-# vendor/
+# macOS specific files
+.DS_Store
 
-*.DS_Store
-.idea
+# IDE/editor specific files
+.idea/
+.vscode/
+*.swp
+*.swo
+
+# Archives and compressed files
 *.zip
 *.tar.gz
+*.tar
+*.gz
+*.bz2
+
+# Go build binaries
 xray
 xray_softfloat
 mockgen
@@ -26,5 +36,33 @@ vprotogen
 errorgen
 !common/errors/errorgen/
 *.dat
-.vscode
-/build_assets
+
+# Build assets
+/build_assets/
+
+# Output from dlv test
+**/debug.*
+
+# Certificates and keys
+*.crt
+*.key
+
+# Dependency directories (uncomment if needed)
+# vendor/
+
+# Logs
+*.log
+
+# Coverage reports
+coverage.*
+
+# Node modules (in case of frontend assets)
+node_modules/
+
+# System files
+Thumbs.db
+ehthumbs.db
+
+# Other common ignores
+*.bak
+*.tmp

Makefile

@@ -1,37 +0,0 @@
-NAME = xray
-
-VERSION=$(shell git describe --always --dirty)
-
-# NOTE: This MAKEFILE can be used to build Xray-core locally and in Automatic workflows. It is \
-	provided for convinience in automatic building and functions as a part of it.
-# NOTE: If you need to modify this file, please be aware that:\
-	- This file is not the main Makefile; it only accepts environment variables and builds the \
-	binary.\
-	- Automatic building expects the correct binaries to be built by this Makefile. If you \
-	intend to propose a change to this Makefile, carefully review the file below and ensure \
-	that the change will not accidently break the automatic building:\
-		.github/workflows/release.yml \
-	Otherwise it is recommended to contact the project maintainers.
-
-LDFLAGS = -X github.com/xtls/xray-core/core.build=$(VERSION) -s -w -buildid=
-PARAMS = -trimpath -ldflags "$(LDFLAGS)" -v
-MAIN = ./main
-PREFIX ?= $(shell go env GOPATH)
-ifeq ($(GOOS),windows)
-OUTPUT = $(NAME).exe
-ADDITION = go build -o w$(NAME).exe -trimpath -ldflags "-H windowsgui $(LDFLAGS)" -v $(MAIN)
-else
-OUTPUT = $(NAME)
-endif
-ifeq ($(shell echo "$(GOARCH)" | grep -Eq "(mips|mipsle)" && echo true),true) # 
-ADDITION = GOMIPS=softfloat go build -o $(NAME)_softfloat -trimpath -ldflags "$(LDFLAGS)" -v $(MAIN)
-endif
-.PHONY: clean build
-
-build:
-	go build -o $(OUTPUT) $(PARAMS) $(MAIN)
-	$(ADDITION)
-
-clean:
-	go clean -v -i $(PWD)
-	rm -f xray xray.exe wxray.exe xray_softfloat

README.md

@@ -4,6 +4,33 @@
 
 [README](https://github.com/XTLS/Xray-core#readme) is open, so feel free to submit your project [here](https://github.com/XTLS/Xray-core/pulls).
 
+## Sponsors
+
+[![Remnawave](https://github.com/user-attachments/assets/a22d34ae-01ee-441c-843a-85356748ed1e)](https://docs.rw)
+
+[![Happ](https://github.com/user-attachments/assets/14055dab-e8bb-48bd-89e8-962709e4098e)](https://happ.su)
+
+[![BlancVPN](https://github.com/user-attachments/assets/9145ea7d-5da3-446e-8143-710dba4292c3)](https://blanc.link/VMTSDqW)
+
+[**Sponsor Xray-core**](https://github.com/XTLS/Xray-core/issues/3668)
+
+## Donation & NFTs
+
+### [Collect a Project X NFT to support the development of Project X!](https://opensea.io/item/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/1)
+
+[<img alt="Project X NFT" width="150px" src="https://raw2.seadn.io/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/7fa9ce900fb39b44226348db330e32/8b7fa9ce900fb39b44226348db330e32.svg" />](https://opensea.io/item/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/1)
+
+- **TRX(Tron)/USDT/USDC: `TNrDh5VSfwd4RPrwsohr6poyNTfFefNYan`**
+- **TON: `UQApeV-u2gm43aC1uP76xAC1m6vCylstaN1gpfBmre_5IyTH`**
+- **BTC: `1JpqcziZZuqv3QQJhZGNGBVdCBrGgkL6cT`**
+- **XMR: `4ABHQZ3yJZkBnLoqiKvb3f8eqUnX4iMPb6wdant5ZLGQELctcerceSGEfJnoCk6nnyRZm73wrwSgvZ2WmjYLng6R7sR67nq`**
+- **SOL/USDT/USDC: `3x5NuXHzB5APG6vRinPZcsUv5ukWUY1tBGRSJiEJWtZa`**
+- **ETH/USDT/USDC: `0xDc3Fe44F0f25D13CACb1C4896CD0D321df3146Ee`**
+- **Project X NFT: https://opensea.io/item/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/1**
+- **VLESS NFT: https://opensea.io/collection/vless**
+- **REALITY NFT: https://opensea.io/item/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/2**
+- **Related links: [VLESS Post-Quantum Encryption](https://github.com/XTLS/Xray-core/pull/5067), [XHTTP: Beyond REALITY](https://github.com/XTLS/Xray-core/discussions/4113), [Announcement of NFTs by Project X](https://github.com/XTLS/Xray-core/discussions/3633)**
+
 ## License
 
 [Mozilla Public License Version 2.0](https://github.com/XTLS/Xray-core/blob/main/LICENSE)
@@ -18,6 +45,10 @@
 
 [Project X Channel](https://t.me/projectXtls)
 
+[Project VLESS](https://t.me/projectVless) (Русский)
+
+[Project XHTTP](https://t.me/projectXhttp) (Persian)
+
 ## Installation
 
 - Linux Script
@@ -26,18 +57,23 @@
 - Docker
   - [ghcr.io/xtls/xray-core](https://ghcr.io/xtls/xray-core) (**Official**)
   - [teddysun/xray](https://hub.docker.com/r/teddysun/xray)
+  - [wulabing/xray_docker](https://github.com/wulabing/xray_docker)
 - Web Panel
-  - [X-UI-English](https://github.com/NidukaAkalanka/x-ui-english), [3X-UI](https://github.com/MHSanaei/3x-ui), [X-UI](https://github.com/alireza0/x-ui), [X-UI](https://github.com/diditra/x-ui)
-  - [Xray-UI](https://github.com/qist/xray-ui), [X-UI](https://github.com/sing-web/x-ui)
-  - [Hiddify](https://github.com/hiddify/hiddify-config)
+  - [Remnawave](https://github.com/remnawave/panel)
+  - [3X-UI](https://github.com/MHSanaei/3x-ui)
+  - [PasarGuard](https://github.com/PasarGuard/panel)
+  - [Xray-UI](https://github.com/qist/xray-ui)
+  - [X-Panel](https://github.com/xeefei/X-Panel)
   - [Marzban](https://github.com/Gozargah/Marzban)
-  - [Libertea](https://github.com/VZiChoushaDui/Libertea)
+  - [Hiddify](https://github.com/hiddify/Hiddify-Manager)
+  - [TX-UI](https://github.com/AghayeCoder/tx-ui)
+  - [CELERITY](https://github.com/ClickDevTech/CELERITY-panel)
 - One Click
   - [Xray-REALITY](https://github.com/zxcvos/Xray-script), [xray-reality](https://github.com/sajjaddg/xray-reality), [reality-ezpz](https://github.com/aleskxyz/reality-ezpz)
-  - [Xray_bash_onekey](https://github.com/hello-yunshu/Xray_bash_onekey), [XTool](https://github.com/LordPenguin666/XTool)
+  - [Xray_bash_onekey](https://github.com/hello-yunshu/Xray_bash_onekey), [XTool](https://github.com/LordPenguin666/XTool), [VPainLess](https://github.com/vpainless/vpainless)
   - [v2ray-agent](https://github.com/mack-a/v2ray-agent), [Xray_onekey](https://github.com/wulabing/Xray_onekey), [ProxySU](https://github.com/proxysu/ProxySU)
 - Magisk
-  - [Xray4Magisk](https://github.com/Asterisk4Magisk/Xray4Magisk)
+  - [Magic_V2Ray](https://github.com/vincentng295/Magic_V2Ray)
   - [Xray_For_Magisk](https://github.com/E7KMbb/Xray_For_Magisk)
 - Homebrew
   - `brew install xray`
@@ -62,86 +98,150 @@
 ## GUI Clients
 
 - OpenWrt
-  - [PassWall](https://github.com/xiaorouji/openwrt-passwall), [PassWall 2](https://github.com/xiaorouji/openwrt-passwall2)
+  - [PassWall](https://github.com/Openwrt-Passwall/openwrt-passwall), [PassWall 2](https://github.com/Openwrt-Passwall/openwrt-passwall2)
   - [ShadowSocksR Plus+](https://github.com/fw876/helloworld)
   - [luci-app-xray](https://github.com/yichya/luci-app-xray) ([openwrt-xray](https://github.com/yichya/openwrt-xray))
+- Asuswrt-Merlin
+  - [XRAYUI](https://github.com/DanielLavrushin/asuswrt-merlin-xrayui)
+  - [fancyss](https://github.com/hq450/fancyss)
 - Windows
   - [v2rayN](https://github.com/2dust/v2rayN)
-  - [NekoRay](https://github.com/Matsuridayo/nekoray)
   - [Furious](https://github.com/LorenEteval/Furious)
-  - [HiddifyN](https://github.com/hiddify/HiddifyN)
   - [Invisible Man - Xray](https://github.com/InvisibleManVPN/InvisibleMan-XRayClient)
+  - [AnyPortal](https://github.com/AnyPortal/AnyPortal)
+  - [GenyConnect](https://github.com/genyleap/GenyConnect)
+  - [OneXray](https://github.com/OneXray/OneXray)
+  - [XrayUI-dev](https://github.com/PhoenixNil/XrayUI-dev)
 - Android
   - [v2rayNG](https://github.com/2dust/v2rayNG)
-  - [HiddifyNG](https://github.com/hiddify/HiddifyNG)
   - [X-flutter](https://github.com/XTLS/X-flutter)
-- iOS & macOS arm64
-  - [FoXray](https://apps.apple.com/app/foxray/id6448898396)
+  - [SaeedDev94/Xray](https://github.com/SaeedDev94/Xray)
+  - [SimpleXray](https://github.com/lhear/SimpleXray)
+  - [XrayFA](https://github.com/Q7DF1/XrayFA)
+  - [AnyPortal](https://github.com/AnyPortal/AnyPortal)
+  - [OneXray](https://github.com/OneXray/OneXray)
+  - [AsteriskNG](https://github.com/Asterisk4Magisk/AsteriskNG)
+- iOS & macOS arm64 & tvOS
+  - [Happ](https://apps.apple.com/app/happ-proxy-utility/id6504287215) | [Happ RU](https://apps.apple.com/ru/app/happ-proxy-utility-plus/id6746188973) | [Happ tvOS](https://apps.apple.com/us/app/happ-proxy-utility-for-tv/id6748297274)
   - [Streisand](https://apps.apple.com/app/streisand/id6450534064)
+  - [OneXray](https://github.com/OneXray/OneXray)
+  - [INCY](https://apps.apple.com/en/app/incy/id6756943388)
 - macOS arm64 & x64
+  - [Happ](https://apps.apple.com/app/happ-proxy-utility/id6504287215) | [Happ RU](https://apps.apple.com/ru/app/happ-proxy-utility-plus/id6746188973)
   - [V2rayU](https://github.com/yanue/V2rayU)
   - [V2RayXS](https://github.com/tzmax/V2RayXS)
   - [Furious](https://github.com/LorenEteval/Furious)
-  - [FoXray](https://apps.apple.com/app/foxray/id6448898396)
+  - [OneXray](https://github.com/OneXray/OneXray)
+  - [GoXRay](https://github.com/goxray/desktop)
+  - [AnyPortal](https://github.com/AnyPortal/AnyPortal)
+  - [v2rayN](https://github.com/2dust/v2rayN)
+  - [GenyConnect](https://github.com/genyleap/GenyConnect)
+  - [INCY](https://apps.apple.com/en/app/incy/id6756943388)
 - Linux
   - [v2rayA](https://github.com/v2rayA/v2rayA)
-  - [NekoRay](https://github.com/Matsuridayo/nekoray)
   - [Furious](https://github.com/LorenEteval/Furious)
+  - [GorzRay](https://github.com/ketetefid/GorzRay)
+  - [GoXRay](https://github.com/goxray/desktop)
+  - [AnyPortal](https://github.com/AnyPortal/AnyPortal)
+  - [v2rayN](https://github.com/2dust/v2rayN)
+  - [GenyConnect](https://github.com/genyleap/GenyConnect)
+  - [OneXray](https://github.com/OneXray/OneXray)
+- HarmonyOS
+  - [Hey](https://github.com/popsiclelmlm/Hey)
 
 ## Others that support VLESS, XTLS, REALITY, XUDP, PLUX...
 
-- iOS & macOS arm64
+- iOS & macOS arm64 & tvOS
+  - [Anywhere](https://github.com/NodePassProject/Anywhere)
   - [Shadowrocket](https://apps.apple.com/app/shadowrocket/id932747118)
+  - [Loon](https://apps.apple.com/us/app/loon/id1373567447)
+  - [Egern](https://apps.apple.com/us/app/egern/id1616105820)
+  - [Quantumult X](https://apps.apple.com/us/app/quantumult-x/id1443988620)
 - Xray Tools
   - [xray-knife](https://github.com/lilendian0x00/xray-knife)
+  - [xray-checker](https://github.com/kutovoys/xray-checker)
 - Xray Wrapper
   - [XTLS/libXray](https://github.com/XTLS/libXray)
+  - [xtls-sdk](https://github.com/remnawave/xtls-sdk)
   - [xtlsapi](https://github.com/hiddify/xtlsapi)
   - [AndroidLibXrayLite](https://github.com/2dust/AndroidLibXrayLite)
-  - [XrayKit](https://github.com/arror/XrayKit)
+  - [flutter_vless](https://github.com/XIIIFOX/flutter_vless)
   - [Xray-core-python](https://github.com/LorenEteval/Xray-core-python)
   - [xray-api](https://github.com/XVGuardian/xray-api)
 - [XrayR](https://github.com/XrayR-project/XrayR)
   - [XrayR-release](https://github.com/XrayR-project/XrayR-release)
   - [XrayR-V2Board](https://github.com/missuo/XrayR-V2Board)
-- [Clash.Meta](https://github.com/MetaCubeX/Clash.Meta)
-  - [Clash Verge](https://github.com/zzzgydi/clash-verge)
-  - [clashN](https://github.com/2dust/clashN)
-  - [Clash Meta for Android](https://github.com/MetaCubeX/ClashMetaForAndroid)
-  - [meta_for_ios](https://t.me/meta_for_ios)
-- [sing-box](https://github.com/SagerNet/sing-box)
-  - [installReality](https://github.com/BoxXt/installReality)
-  - [sbox-reality](https://github.com/Misaka-blog/sbox-reality)
-  - [sing-box-for-ios](https://github.com/SagerNet/sing-box-for-ios)
+- Cores
+  - [Amnezia VPN](https://github.com/amnezia-vpn)
+  - [mihomo](https://github.com/MetaCubeX/mihomo)
+  - [sing-box](https://github.com/SagerNet/sing-box)
 
 ## Contributing
 
 [Code of Conduct](https://github.com/XTLS/Xray-core/blob/main/CODE_OF_CONDUCT.md)
 
+[![Ask DeepWiki](https://deepwiki.com/badge.svg)](https://deepwiki.com/XTLS/Xray-core)
+
 ## Credits
 
 - [Xray-core v1.0.0](https://github.com/XTLS/Xray-core/releases/tag/v1.0.0) was forked from [v2fly-core 9a03cc5](https://github.com/v2fly/v2ray-core/commit/9a03cc5c98d04cc28320fcee26dbc236b3291256), and we have made & accumulated a huge number of enhancements over time, check [the release notes for each version](https://github.com/XTLS/Xray-core/releases).
 - For third-party projects used in [Xray-core](https://github.com/XTLS/Xray-core), check your local or [the latest go.mod](https://github.com/XTLS/Xray-core/blob/main/go.mod).
 
-## Compilation
+### Bundled Third-Party Components Redistribution
+
+**Certain optional features dynamically load third-party components. These optional components are separate works distributed under their own licenses, and are bundled into the ZIP package for ease of use. Users may replace these components under the licenses from these components.**
+
+These components include:
+
+#### Wintun
+
+This distribution contains unmodified official precompiled and pre-signed Wintun binaries.
+
+- Project: Wintun
+- Copyright: Copyright (C) 2018-2021 WireGuard LLC. All Rights Reserved.
+- Redistribution License: Prebuilt Binaries License (PBL) bundled with official precompiled and pre-signed binaries from wintun.net
+- Component(s): wintun.dll
+- Source: https://www.wintun.net/
+- Included in:
+  - Windows x86 (windows-32, win7-32)
+  - Windows x86-64 (windows-64, win7-64)
+  - Windows AArch64 (windows-arm64)
+- Notes: Wintun is an optional runtime-loaded component only used for TUN inbound functionality on supported Windows platforms.
+
+## One-line Compilation
 
 ### Windows (PowerShell)
 
 ```powershell
 $env:CGO_ENABLED=0
-go build -o xray.exe -trimpath -ldflags "-s -w -buildid=" ./main
+go build -o xray.exe -trimpath -buildvcs=false -ldflags="-s -w -buildid=" -v ./main
 ```
 
 ### Linux / macOS
 
 ```bash
-CGO_ENABLED=0 go build -o xray -trimpath -ldflags "-s -w -buildid=" ./main
+CGO_ENABLED=0 go build -o xray -trimpath -buildvcs=false -ldflags="-s -w -buildid=" -v ./main
 ```
 
 ### Reproducible Releases
 
+Make sure that you are using the same Go version, and remember to set the git commit id (7 bytes):
+
 ```bash
-make
+CGO_ENABLED=0 go build -o xray -trimpath -buildvcs=false -gcflags="all=-l=4" -ldflags="-X github.com/xtls/xray-core/core.build=REPLACE -s -w -buildid=" -v ./main
+```
+
+For Android:
+
+```bash
+GOOS=android GOARCH=arm64 CGO_ENABLED=1 CC=/path/to/aarch64-linux-android24-clang go build -o xray -trimpath -buildvcs=false -gcflags="all=-l=4" -ldflags="-X github.com/xtls/xray-core/core.build=REPLACE -s -w -buildid= -checklinkname=0" -v ./main
+GOOS=android GOARCH=amd64 CGO_ENABLED=1 CC=/path/to/x86_64-linux-android24-clang go build -o xray -trimpath -buildvcs=false -gcflags="all=-l=4" -ldflags="-X github.com/xtls/xray-core/core.build=REPLACE -s -w -buildid= -checklinkname=0" -v ./main
+```
+
+If you are compiling a 32-bit MIPS/MIPSLE target, use this command instead:
+
+```bash
+CGO_ENABLED=0 go build -o xray -trimpath -buildvcs=false -gcflags="-l=4" -ldflags="-X github.com/xtls/xray-core/core.build=REPLACE -s -w -buildid=" -v ./main
 ```
 
 ## Stargazers over time

SECURITY.md

@@ -0,0 +1,5 @@
+# Security Policy
+
+If you found an issue related to security vulnerability or protocol-identification problem, please report it to us via "[Report a vulnerability](https://github.com/XTLS/Xray-core/security/advisories/new)" privately, instead of publish it publicly before we release the fixed version.
+
+Thanks for your contribution to the FREE Internet!

app/commander/commander.go

@@ -1,10 +1,9 @@
 package commander
 
-//go:generate go run github.com/xtls/xray-core/common/errors/errorgen
-
 import (
 	"context"
 	"net"
+	"strings"
 	"sync"
 
 	"github.com/xtls/xray-core/common"
@@ -12,6 +11,7 @@ import (
 	"github.com/xtls/xray-core/common/signal/done"
 	core "github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/outbound"
+	"github.com/xtls/xray-core/transport/internet"
 	"google.golang.org/grpc"
 )
 
@@ -69,20 +69,32 @@ func (c *Commander) Start() error {
 	}
 	c.Unlock()
 
-	var listen = func(listener net.Listener) {
+	listen := func(listener net.Listener) {
 		if err := c.server.Serve(listener); err != nil {
 			errors.LogErrorInner(context.Background(), err, "failed to start grpc server")
 		}
 	}
 
 	if len(c.listen) > 0 {
-		if l, err := net.Listen("tcp", c.listen); err != nil {
+		var addr net.Addr
+
+		if strings.HasPrefix(c.listen, "/") || strings.HasPrefix(c.listen, "@") {
+			addr = &net.UnixAddr{Name: c.listen, Net: "unix"}
+		} else {
+			tcpAddr, err := net.ResolveTCPAddr("tcp", c.listen)
+			if err != nil {
+				errors.LogErrorInner(context.Background(), err, "API server failed to parse listen address ", c.listen)
+				return err
+			}
+			addr = tcpAddr
+		}
+		l, err := internet.ListenSystem(context.Background(), addr, nil)
+		if err != nil {
 			errors.LogErrorInner(context.Background(), err, "API server failed to listen on ", c.listen)
 			return err
-		} else {
-			errors.LogInfo(context.Background(), "API server listening on ", l.Addr())
-			go listen(l)
 		}
+		errors.LogInfo(context.Background(), "API server listening on ", l.Addr())
+		go listen(l)
 		return nil
 	}
 

app/commander/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.1
-// 	protoc        v5.27.0
+// 	protoc-gen-go v1.36.11
+// 	protoc        v6.33.5
 // source: app/commander/config.proto
 
 package commander
@@ -12,6 +12,7 @@ import (
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	reflect "reflect"
 	sync "sync"
+	unsafe "unsafe"
 )
 
 const (
@@ -23,26 +24,23 @@ const (
 
 // Config is the settings for Commander.
 type Config struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
+	state protoimpl.MessageState `protogen:"open.v1"`
 	// Tag of the outbound handler that handles grpc connections.
 	Tag string `protobuf:"bytes,1,opt,name=tag,proto3" json:"tag,omitempty"`
 	// Network address of commander grpc service.
 	Listen string `protobuf:"bytes,3,opt,name=listen,proto3" json:"listen,omitempty"`
 	// Services that supported by this server. All services must implement Service
 	// interface.
-	Service []*serial.TypedMessage `protobuf:"bytes,2,rep,name=service,proto3" json:"service,omitempty"`
+	Service       []*serial.TypedMessage `protobuf:"bytes,2,rep,name=service,proto3" json:"service,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *Config) Reset() {
 	*x = Config{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_commander_config_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_commander_config_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Config) String() string {
@@ -53,7 +51,7 @@ func (*Config) ProtoMessage() {}
 
 func (x *Config) ProtoReflect() protoreflect.Message {
 	mi := &file_app_commander_config_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -91,18 +89,16 @@ func (x *Config) GetService() []*serial.TypedMessage {
 
 // ReflectionConfig is the placeholder config for ReflectionService.
 type ReflectionConfig struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
+	state         protoimpl.MessageState `protogen:"open.v1"`
 	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *ReflectionConfig) Reset() {
 	*x = ReflectionConfig{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_commander_config_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_commander_config_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *ReflectionConfig) String() string {
@@ -113,7 +109,7 @@ func (*ReflectionConfig) ProtoMessage() {}
 
 func (x *ReflectionConfig) ProtoReflect() protoreflect.Message {
 	mi := &file_app_commander_config_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -130,43 +126,30 @@ func (*ReflectionConfig) Descriptor() ([]byte, []int) {
 
 var File_app_commander_config_proto protoreflect.FileDescriptor
 
-var file_app_commander_config_proto_rawDesc = []byte{
-	0x0a, 0x1a, 0x61, 0x70, 0x70, 0x2f, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x65, 0x72, 0x2f,
-	0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x12, 0x78, 0x72,
-	0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x65, 0x72,
-	0x1a, 0x21, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2f, 0x73, 0x65, 0x72, 0x69, 0x61, 0x6c, 0x2f,
-	0x74, 0x79, 0x70, 0x65, 0x64, 0x5f, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x2e, 0x70, 0x72,
-	0x6f, 0x74, 0x6f, 0x22, 0x6e, 0x0a, 0x06, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x10, 0x0a,
-	0x03, 0x74, 0x61, 0x67, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x03, 0x74, 0x61, 0x67, 0x12,
-	0x16, 0x0a, 0x06, 0x6c, 0x69, 0x73, 0x74, 0x65, 0x6e, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52,
-	0x06, 0x6c, 0x69, 0x73, 0x74, 0x65, 0x6e, 0x12, 0x3a, 0x0a, 0x07, 0x73, 0x65, 0x72, 0x76, 0x69,
-	0x63, 0x65, 0x18, 0x02, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x20, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e,
-	0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x73, 0x65, 0x72, 0x69, 0x61, 0x6c, 0x2e, 0x54, 0x79,
-	0x70, 0x65, 0x64, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x52, 0x07, 0x73, 0x65, 0x72, 0x76,
-	0x69, 0x63, 0x65, 0x22, 0x12, 0x0a, 0x10, 0x52, 0x65, 0x66, 0x6c, 0x65, 0x63, 0x74, 0x69, 0x6f,
-	0x6e, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x42, 0x58, 0x0a, 0x16, 0x63, 0x6f, 0x6d, 0x2e, 0x78,
-	0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x65,
-	0x72, 0x50, 0x01, 0x5a, 0x27, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f,
-	0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x61,
-	0x70, 0x70, 0x2f, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x65, 0x72, 0xaa, 0x02, 0x12, 0x58,
-	0x72, 0x61, 0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x43, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x65,
-	0x72, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
-}
+const file_app_commander_config_proto_rawDesc = "" +
+	"\n" +
+	"\x1aapp/commander/config.proto\x12\x12xray.app.commander\x1a!common/serial/typed_message.proto\"n\n" +
+	"\x06Config\x12\x10\n" +
+	"\x03tag\x18\x01 \x01(\tR\x03tag\x12\x16\n" +
+	"\x06listen\x18\x03 \x01(\tR\x06listen\x12:\n" +
+	"\aservice\x18\x02 \x03(\v2 .xray.common.serial.TypedMessageR\aservice\"\x12\n" +
+	"\x10ReflectionConfigBX\n" +
+	"\x16com.xray.app.commanderP\x01Z'github.com/xtls/xray-core/app/commander\xaa\x02\x12Xray.App.Commanderb\x06proto3"
 
 var (
 	file_app_commander_config_proto_rawDescOnce sync.Once
-	file_app_commander_config_proto_rawDescData = file_app_commander_config_proto_rawDesc
+	file_app_commander_config_proto_rawDescData []byte
 )
 
 func file_app_commander_config_proto_rawDescGZIP() []byte {
 	file_app_commander_config_proto_rawDescOnce.Do(func() {
-		file_app_commander_config_proto_rawDescData = protoimpl.X.CompressGZIP(file_app_commander_config_proto_rawDescData)
+		file_app_commander_config_proto_rawDescData = protoimpl.X.CompressGZIP(unsafe.Slice(unsafe.StringData(file_app_commander_config_proto_rawDesc), len(file_app_commander_config_proto_rawDesc)))
 	})
 	return file_app_commander_config_proto_rawDescData
 }
 
 var file_app_commander_config_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
-var file_app_commander_config_proto_goTypes = []interface{}{
+var file_app_commander_config_proto_goTypes = []any{
 	(*Config)(nil),              // 0: xray.app.commander.Config
 	(*ReflectionConfig)(nil),    // 1: xray.app.commander.ReflectionConfig
 	(*serial.TypedMessage)(nil), // 2: xray.common.serial.TypedMessage
@@ -185,37 +168,11 @@ func file_app_commander_config_proto_init() {
 	if File_app_commander_config_proto != nil {
 		return
 	}
-	if !protoimpl.UnsafeEnabled {
-		file_app_commander_config_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Config); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_commander_config_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ReflectionConfig); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_app_commander_config_proto_rawDesc,
+			RawDescriptor: unsafe.Slice(unsafe.StringData(file_app_commander_config_proto_rawDesc), len(file_app_commander_config_proto_rawDesc)),
 			NumEnums:      0,
 			NumMessages:   2,
 			NumExtensions: 0,
@@ -226,7 +183,6 @@ func file_app_commander_config_proto_init() {
 		MessageInfos:      file_app_commander_config_proto_msgTypes,
 	}.Build()
 	File_app_commander_config_proto = out.File
-	file_app_commander_config_proto_rawDesc = nil
 	file_app_commander_config_proto_goTypes = nil
 	file_app_commander_config_proto_depIdxs = nil
 }

app/commander/outbound.go

@@ -8,6 +8,7 @@ import (
 	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/net/cnc"
+	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/common/signal/done"
 	"github.com/xtls/xray-core/transport"
 )
@@ -108,3 +109,13 @@ func (co *Outbound) Close() error {
 	co.closed = true
 	return co.listener.Close()
 }
+
+// SenderSettings implements outbound.Handler.
+func (co *Outbound) SenderSettings() *serial.TypedMessage {
+	return nil
+}
+
+// ProxySettings implements outbound.Handler.
+func (co *Outbound) ProxySettings() *serial.TypedMessage {
+	return nil
+}

app/dispatcher/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.1
-// 	protoc        v5.27.0
+// 	protoc-gen-go v1.36.11
+// 	protoc        v6.33.5
 // source: app/dispatcher/config.proto
 
 package dispatcher
@@ -11,6 +11,7 @@ import (
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	reflect "reflect"
 	sync "sync"
+	unsafe "unsafe"
 )
 
 const (
@@ -21,18 +22,16 @@ const (
 )
 
 type SessionConfig struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
+	state         protoimpl.MessageState `protogen:"open.v1"`
 	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *SessionConfig) Reset() {
 	*x = SessionConfig{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_dispatcher_config_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_dispatcher_config_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *SessionConfig) String() string {
@@ -43,7 +42,7 @@ func (*SessionConfig) ProtoMessage() {}
 
 func (x *SessionConfig) ProtoReflect() protoreflect.Message {
 	mi := &file_app_dispatcher_config_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -59,20 +58,17 @@ func (*SessionConfig) Descriptor() ([]byte, []int) {
 }
 
 type Config struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	Settings      *SessionConfig         `protobuf:"bytes,1,opt,name=settings,proto3" json:"settings,omitempty"`
 	unknownFields protoimpl.UnknownFields
-
-	Settings *SessionConfig `protobuf:"bytes,1,opt,name=settings,proto3" json:"settings,omitempty"`
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *Config) Reset() {
 	*x = Config{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_dispatcher_config_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_dispatcher_config_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Config) String() string {
@@ -83,7 +79,7 @@ func (*Config) ProtoMessage() {}
 
 func (x *Config) ProtoReflect() protoreflect.Message {
 	mi := &file_app_dispatcher_config_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -107,39 +103,28 @@ func (x *Config) GetSettings() *SessionConfig {
 
 var File_app_dispatcher_config_proto protoreflect.FileDescriptor
 
-var file_app_dispatcher_config_proto_rawDesc = []byte{
-	0x0a, 0x1b, 0x61, 0x70, 0x70, 0x2f, 0x64, 0x69, 0x73, 0x70, 0x61, 0x74, 0x63, 0x68, 0x65, 0x72,
-	0x2f, 0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x13, 0x78,
-	0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x64, 0x69, 0x73, 0x70, 0x61, 0x74, 0x63, 0x68,
-	0x65, 0x72, 0x22, 0x15, 0x0a, 0x0d, 0x53, 0x65, 0x73, 0x73, 0x69, 0x6f, 0x6e, 0x43, 0x6f, 0x6e,
-	0x66, 0x69, 0x67, 0x4a, 0x04, 0x08, 0x01, 0x10, 0x02, 0x22, 0x48, 0x0a, 0x06, 0x43, 0x6f, 0x6e,
-	0x66, 0x69, 0x67, 0x12, 0x3e, 0x0a, 0x08, 0x73, 0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73, 0x18,
-	0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x22, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70,
-	0x2e, 0x64, 0x69, 0x73, 0x70, 0x61, 0x74, 0x63, 0x68, 0x65, 0x72, 0x2e, 0x53, 0x65, 0x73, 0x73,
-	0x69, 0x6f, 0x6e, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x52, 0x08, 0x73, 0x65, 0x74, 0x74, 0x69,
-	0x6e, 0x67, 0x73, 0x42, 0x5b, 0x0a, 0x17, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e,
-	0x61, 0x70, 0x70, 0x2e, 0x64, 0x69, 0x73, 0x70, 0x61, 0x74, 0x63, 0x68, 0x65, 0x72, 0x50, 0x01,
-	0x5a, 0x28, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c,
-	0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x61, 0x70, 0x70, 0x2f,
-	0x64, 0x69, 0x73, 0x70, 0x61, 0x74, 0x63, 0x68, 0x65, 0x72, 0xaa, 0x02, 0x13, 0x58, 0x72, 0x61,
-	0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x44, 0x69, 0x73, 0x70, 0x61, 0x74, 0x63, 0x68, 0x65, 0x72,
-	0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
-}
+const file_app_dispatcher_config_proto_rawDesc = "" +
+	"\n" +
+	"\x1bapp/dispatcher/config.proto\x12\x13xray.app.dispatcher\"\x15\n" +
+	"\rSessionConfigJ\x04\b\x01\x10\x02\"H\n" +
+	"\x06Config\x12>\n" +
+	"\bsettings\x18\x01 \x01(\v2\".xray.app.dispatcher.SessionConfigR\bsettingsB[\n" +
+	"\x17com.xray.app.dispatcherP\x01Z(github.com/xtls/xray-core/app/dispatcher\xaa\x02\x13Xray.App.Dispatcherb\x06proto3"
 
 var (
 	file_app_dispatcher_config_proto_rawDescOnce sync.Once
-	file_app_dispatcher_config_proto_rawDescData = file_app_dispatcher_config_proto_rawDesc
+	file_app_dispatcher_config_proto_rawDescData []byte
 )
 
 func file_app_dispatcher_config_proto_rawDescGZIP() []byte {
 	file_app_dispatcher_config_proto_rawDescOnce.Do(func() {
-		file_app_dispatcher_config_proto_rawDescData = protoimpl.X.CompressGZIP(file_app_dispatcher_config_proto_rawDescData)
+		file_app_dispatcher_config_proto_rawDescData = protoimpl.X.CompressGZIP(unsafe.Slice(unsafe.StringData(file_app_dispatcher_config_proto_rawDesc), len(file_app_dispatcher_config_proto_rawDesc)))
 	})
 	return file_app_dispatcher_config_proto_rawDescData
 }
 
 var file_app_dispatcher_config_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
-var file_app_dispatcher_config_proto_goTypes = []interface{}{
+var file_app_dispatcher_config_proto_goTypes = []any{
 	(*SessionConfig)(nil), // 0: xray.app.dispatcher.SessionConfig
 	(*Config)(nil),        // 1: xray.app.dispatcher.Config
 }
@@ -157,37 +142,11 @@ func file_app_dispatcher_config_proto_init() {
 	if File_app_dispatcher_config_proto != nil {
 		return
 	}
-	if !protoimpl.UnsafeEnabled {
-		file_app_dispatcher_config_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SessionConfig); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_dispatcher_config_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Config); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_app_dispatcher_config_proto_rawDesc,
+			RawDescriptor: unsafe.Slice(unsafe.StringData(file_app_dispatcher_config_proto_rawDesc), len(file_app_dispatcher_config_proto_rawDesc)),
 			NumEnums:      0,
 			NumMessages:   2,
 			NumExtensions: 0,
@@ -198,7 +157,6 @@ func file_app_dispatcher_config_proto_init() {
 		MessageInfos:      file_app_dispatcher_config_proto_msgTypes,
 	}.Build()
 	File_app_dispatcher_config_proto = out.File
-	file_app_dispatcher_config_proto_rawDesc = nil
 	file_app_dispatcher_config_proto_goTypes = nil
 	file_app_dispatcher_config_proto_depIdxs = nil
 }

app/dispatcher/default.go

@@ -1,17 +1,14 @@
 package dispatcher
 
-//go:generate go run github.com/xtls/xray-core/common/errors/errorgen
-
 import (
 	"context"
-	"regexp"
 	"strings"
 	"sync"
 	"time"
 
 	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/buf"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/log"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/protocol"
@@ -31,21 +28,25 @@ var errSniffingTimeout = errors.New("timeout on sniffing")
 
 type cachedReader struct {
 	sync.Mutex
-	reader *pipe.Reader
+	reader buf.TimeoutReader // *pipe.Reader or *buf.TimeoutWrapperReader
 	cache  buf.MultiBuffer
 }
 
-func (r *cachedReader) Cache(b *buf.Buffer) {
-	mb, _ := r.reader.ReadMultiBufferTimeout(time.Millisecond * 100)
+func (r *cachedReader) Cache(b *buf.Buffer, deadline time.Duration) error {
+	mb, err := r.reader.ReadMultiBufferTimeout(deadline)
+	if err != nil {
+		return err
+	}
 	r.Lock()
 	if !mb.IsEmpty() {
 		r.cache, _ = buf.MergeMulti(r.cache, mb)
 	}
 	b.Clear()
-	rawBytes := b.Extend(buf.Size)
+	rawBytes := b.Extend(min(r.cache.Len(), b.Cap()))
 	n := r.cache.Copy(rawBytes)
 	b.Resize(0, int32(n))
 	r.Unlock()
+	return nil
 }
 
 func (r *cachedReader) readInternal() buf.MultiBuffer {
@@ -85,7 +86,9 @@ func (r *cachedReader) Interrupt() {
 		r.cache = buf.ReleaseMulti(r.cache)
 	}
 	r.Unlock()
-	r.reader.Interrupt()
+	if p, ok := r.reader.(*pipe.Reader); ok {
+		p.Interrupt()
+	}
 }
 
 // DefaultDispatcher is a default implementation of Dispatcher.
@@ -94,7 +97,6 @@ type DefaultDispatcher struct {
 	router routing.Router
 	policy policy.Manager
 	stats  stats.Manager
-	dns    dns.Client
 	fdns   dns.FakeDNSEngine
 }
 
@@ -102,10 +104,10 @@ func init() {
 	common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
 		d := new(DefaultDispatcher)
 		if err := core.RequireFeatures(ctx, func(om outbound.Manager, router routing.Router, pm policy.Manager, sm stats.Manager, dc dns.Client) error {
-			core.RequireFeatures(ctx, func(fdns dns.FakeDNSEngine) {
+			core.OptionalFeatures(ctx, func(fdns dns.FakeDNSEngine) {
 				d.fdns = fdns
 			})
-			return d.Init(config.(*Config), om, router, pm, sm, dc)
+			return d.Init(config.(*Config), om, router, pm, sm)
 		}); err != nil {
 			return nil, err
 		}
@@ -114,12 +116,11 @@ func init() {
 }
 
 // Init initializes DefaultDispatcher.
-func (d *DefaultDispatcher) Init(config *Config, om outbound.Manager, router routing.Router, pm policy.Manager, sm stats.Manager, dns dns.Client) error {
+func (d *DefaultDispatcher) Init(config *Config, om outbound.Manager, router routing.Router, pm policy.Manager, sm stats.Manager) error {
 	d.ohm = om
 	d.router = router
 	d.policy = pm
 	d.stats = sm
-	d.dns = dns
 	return nil
 }
 
@@ -161,7 +162,7 @@ func (d *DefaultDispatcher) getLink(ctx context.Context) (*transport.Link, *tran
 		p := d.policy.ForLevel(user.Level)
 		if p.Stats.UserUplink {
 			name := "user>>>" + user.Email + ">>>traffic>>>uplink"
-			if c, _ := stats.GetOrRegisterCounter(d.stats, name); c != nil {
+			if c, _ := d.stats.GetOrRegisterCounter(name); c != nil {
 				inboundLink.Writer = &SizeStatWriter{
 					Counter: c,
 					Writer:  inboundLink.Writer,
@@ -170,39 +171,74 @@ func (d *DefaultDispatcher) getLink(ctx context.Context) (*transport.Link, *tran
 		}
 		if p.Stats.UserDownlink {
 			name := "user>>>" + user.Email + ">>>traffic>>>downlink"
-			if c, _ := stats.GetOrRegisterCounter(d.stats, name); c != nil {
+			if c, _ := d.stats.GetOrRegisterCounter(name); c != nil {
 				outboundLink.Writer = &SizeStatWriter{
 					Counter: c,
 					Writer:  outboundLink.Writer,
 				}
 			}
 		}
+
+		if p.Stats.UserOnline {
+			trackOnlineIP(ctx, d.stats, user.Email, sessionInbound.Source.Address.String())
+		}
 	}
 
 	return inboundLink, outboundLink
 }
 
+func WrapLink(ctx context.Context, policyManager policy.Manager, statsManager stats.Manager, link *transport.Link) *transport.Link {
+	sessionInbound := session.InboundFromContext(ctx)
+	var user *protocol.MemoryUser
+	if sessionInbound != nil {
+		user = sessionInbound.User
+	}
+
+	link.Reader = &buf.TimeoutWrapperReader{Reader: link.Reader}
+
+	if user != nil && len(user.Email) > 0 {
+		p := policyManager.ForLevel(user.Level)
+		if p.Stats.UserUplink {
+			name := "user>>>" + user.Email + ">>>traffic>>>uplink"
+			if c, _ := statsManager.GetOrRegisterCounter(name); c != nil {
+				link.Reader.(*buf.TimeoutWrapperReader).Counter = c
+			}
+		}
+		if p.Stats.UserDownlink {
+			name := "user>>>" + user.Email + ">>>traffic>>>downlink"
+			if c, _ := statsManager.GetOrRegisterCounter(name); c != nil {
+				link.Writer = &SizeStatWriter{
+					Counter: c,
+					Writer:  link.Writer,
+				}
+			}
+		}
+		if p.Stats.UserOnline {
+			trackOnlineIP(ctx, statsManager, user.Email, sessionInbound.Source.Address.String())
+		}
+	}
+
+	return link
+}
+
+func trackOnlineIP(ctx context.Context, sm stats.Manager, email, ip string) {
+	name := "user>>>" + email + ">>>online"
+	if om, _ := sm.GetOrRegisterOnlineMap(name); om != nil {
+		om.AddIP(ip)
+		context.AfterFunc(ctx, func() { om.RemoveIP(ip) })
+	}
+}
+
 func (d *DefaultDispatcher) shouldOverride(ctx context.Context, result SniffResult, request session.SniffingRequest, destination net.Destination) bool {
 	domain := result.Domain()
 	if domain == "" {
 		return false
 	}
-	for _, d := range request.ExcludeForDomain {
-		if strings.HasPrefix(d, "regexp:") {
-			pattern := d[7:]
-			re, err := regexp.Compile(pattern)
-			if err != nil {
-				errors.LogInfo(ctx, "Unable to compile regex")
-				continue
-			}
-			if re.MatchString(domain) {
-				return false
-			}
-		} else {
-			if strings.ToLower(domain) == d {
-				return false
-			}
-		}
+	if request.ExcludeForDomain != nil && request.ExcludeForDomain.MatchAny(strings.ToLower(domain)) {
+		return false
+	}
+	if request.ExcludeForIP != nil && destination.Address.Family().IsIP() && request.ExcludeForIP.Match(destination.Address.IP()) {
+		return false
 	}
 	protocolString := result.Protocol()
 	if resComp, ok := result.(SnifferResultComposite); ok {
@@ -302,12 +338,13 @@ func (d *DefaultDispatcher) DispatchLink(ctx context.Context, destination net.De
 		content = new(session.Content)
 		ctx = session.ContextWithContent(ctx, content)
 	}
+	outbound = WrapLink(ctx, d.policy, d.stats, outbound)
 	sniffingRequest := content.SniffingRequest
 	if !sniffingRequest.Enabled {
 		d.routedDispatch(ctx, outbound, destination)
 	} else {
 		cReader := &cachedReader{
-			reader: outbound.Reader.(*pipe.Reader),
+			reader: outbound.Reader.(buf.TimeoutReader),
 		}
 		outbound.Reader = cReader
 		result, err := sniffer(ctx, cReader, sniffingRequest.MetadataOnly, destination.Network)
@@ -339,7 +376,7 @@ func (d *DefaultDispatcher) DispatchLink(ctx context.Context, destination net.De
 }
 
 func sniffer(ctx context.Context, cReader *cachedReader, metadataOnly bool, network net.Network) (SniffResult, error) {
-	payload := buf.New()
+	payload := buf.NewWithSize(32767)
 	defer payload.Release()
 
 	sniffer := NewSniffer(ctx)
@@ -351,26 +388,36 @@ func sniffer(ctx context.Context, cReader *cachedReader, metadataOnly bool, netw
 	}
 
 	contentResult, contentErr := func() (SniffResult, error) {
+		cacheDeadline := 200 * time.Millisecond
 		totalAttempt := 0
 		for {
 			select {
 			case <-ctx.Done():
 				return nil, ctx.Err()
 			default:
-				totalAttempt++
-				if totalAttempt > 2 {
-					return nil, errSniffingTimeout
+				cachingStartingTimeStamp := time.Now()
+				err := cReader.Cache(payload, cacheDeadline)
+				if err != nil {
+					return nil, err
 				}
+				cachingTimeElapsed := time.Since(cachingStartingTimeStamp)
+				cacheDeadline -= cachingTimeElapsed
 
-				cReader.Cache(payload)
 				if !payload.IsEmpty() {
 					result, err := sniffer.Sniff(ctx, payload.Bytes(), network)
-					if err != common.ErrNoClue {
+					switch err {
+					case common.ErrNoClue: // No Clue: protocol not matches, and sniffer cannot determine whether there will be a match or not
+						totalAttempt++
+					case protocol.ErrProtoNeedMoreData: // Protocol Need More Data: protocol matches, but need more data to complete sniffing
+						// in this case, do not add totalAttempt(allow to read until timeout)
+					default:
 						return result, err
 					}
+				} else {
+					totalAttempt++
 				}
-				if payload.IsFull() {
-					return nil, errUnknownContent
+				if totalAttempt >= 2 || cacheDeadline <= 0 {
+					return nil, errSniffingTimeout
 				}
 			}
 		}
@@ -383,21 +430,10 @@ func sniffer(ctx context.Context, cReader *cachedReader, metadataOnly bool, netw
 	}
 	return contentResult, contentErr
 }
+
 func (d *DefaultDispatcher) routedDispatch(ctx context.Context, link *transport.Link, destination net.Destination) {
 	outbounds := session.OutboundsFromContext(ctx)
 	ob := outbounds[len(outbounds)-1]
-	if hosts, ok := d.dns.(dns.HostsLookup); ok && destination.Address.Family().IsDomain() {
-		proxied := hosts.LookupHosts(ob.Target.String())
-		if proxied != nil {
-			ro := ob.RouteTarget == destination
-			destination.Address = *proxied
-			if ro {
-				ob.RouteTarget = destination
-			} else {
-				ob.Target = destination
-			}
-		}
-	}
 
 	var handler outbound.Handler
 
@@ -421,10 +457,17 @@ func (d *DefaultDispatcher) routedDispatch(ctx context.Context, link *transport.
 			outTag := route.GetOutboundTag()
 			if h := d.ohm.GetHandler(outTag); h != nil {
 				isPickRoute = 2
-				errors.LogInfo(ctx, "taking detour [", outTag, "] for [", destination, "]")
+				if route.GetRuleTag() == "" {
+					errors.LogInfo(ctx, "taking detour [", outTag, "] for [", destination, "]")
+				} else {
+					errors.LogInfo(ctx, "Hit route rule: [", route.GetRuleTag(), "] so taking detour [", outTag, "] for [", destination, "]")
+				}
 				handler = h
 			} else {
 				errors.LogWarning(ctx, "non existing outTag: ", outTag)
+				common.Close(link.Writer)
+				common.Interrupt(link.Reader)
+				return // DO NOT CHANGE: the traffic shouldn't be processed by default outbound if the specified outbound tag doesn't exist (yet), e.g., VLESS Reverse Proxy
 			}
 		} else {
 			errors.LogInfo(ctx, "default route for ", destination)

app/dispatcher/dispatcher.go

@@ -1,3 +1 @@
 package dispatcher
-
-//go:generate go run github.com/xtls/xray-core/common/errors/errorgen

app/dispatcher/fakednssniffer.go

@@ -28,7 +28,7 @@ func newFakeDNSSniffer(ctx context.Context) (protocolSnifferWithMetadata, error)
 	}
 	return protocolSnifferWithMetadata{protocolSniffer: func(ctx context.Context, bytes []byte) (SniffResult, error) {
 		outbounds := session.OutboundsFromContext(ctx)
-		ob := outbounds[len(outbounds) - 1]
+		ob := outbounds[len(outbounds)-1]
 		if ob.Target.Network == net.Network_TCP || ob.Target.Network == net.Network_UDP {
 			domainFromFakeDNS := fakeDNSEngine.GetDomainFromFakeDNS(ob.Target.Address)
 			if domainFromFakeDNS != "" {

app/dispatcher/sniffer.go

@@ -6,6 +6,7 @@ import (
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/common/protocol"
 	"github.com/xtls/xray-core/common/protocol/bittorrent"
 	"github.com/xtls/xray-core/common/protocol/http"
 	"github.com/xtls/xray-core/common/protocol/quic"
@@ -35,7 +36,7 @@ type Sniffer struct {
 func NewSniffer(ctx context.Context) *Sniffer {
 	ret := &Sniffer{
 		sniffer: []protocolSnifferWithMetadata{
-			{func(c context.Context, b []byte) (SniffResult, error) { return http.SniffHTTP(b) }, false, net.Network_TCP},
+			{func(c context.Context, b []byte) (SniffResult, error) { return http.SniffHTTP(b, c) }, false, net.Network_TCP},
 			{func(c context.Context, b []byte) (SniffResult, error) { return tls.SniffTLS(b) }, false, net.Network_TCP},
 			{func(c context.Context, b []byte) (SniffResult, error) { return bittorrent.SniffBittorrent(b) }, false, net.Network_TCP},
 			{func(c context.Context, b []byte) (SniffResult, error) { return quic.SniffQUIC(b) }, false, net.Network_UDP},
@@ -58,14 +59,17 @@ var errUnknownContent = errors.New("unknown content")
 func (s *Sniffer) Sniff(c context.Context, payload []byte, network net.Network) (SniffResult, error) {
 	var pendingSniffer []protocolSnifferWithMetadata
 	for _, si := range s.sniffer {
-		s := si.protocolSniffer
+		protocolSniffer := si.protocolSniffer
 		if si.metadataSniffer || si.network != network {
 			continue
 		}
-		result, err := s(c, payload)
+		result, err := protocolSniffer(c, payload)
 		if err == common.ErrNoClue {
 			pendingSniffer = append(pendingSniffer, si)
 			continue
+		} else if err == protocol.ErrProtoNeedMoreData { // Sniffer protocol matched, but need more data to complete sniffing
+			s.sniffer = []protocolSnifferWithMetadata{si}
+			return nil, err
 		}
 
 		if err == nil && result != nil {

app/dns/cache_controller.go

@@ -0,0 +1,340 @@
+package dns
+
+import (
+	"context"
+	go_errors "errors"
+	"runtime"
+	"sync"
+	"time"
+
+	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/common/signal/pubsub"
+	"github.com/xtls/xray-core/common/task"
+	dns_feature "github.com/xtls/xray-core/features/dns"
+
+	"golang.org/x/net/dns/dnsmessage"
+	"golang.org/x/sync/singleflight"
+)
+
+const (
+	minSizeForEmptyRebuild  = 512
+	shrinkAbsoluteThreshold = 10240
+	shrinkRatioThreshold    = 0.65
+	migrationBatchSize      = 4096
+)
+
+type CacheController struct {
+	name            string
+	disableCache    bool
+	serveStale      bool
+	serveExpiredTTL int32
+
+	ips      map[string]*record
+	dirtyips map[string]*record
+
+	sync.RWMutex
+	pub           *pubsub.Service
+	cacheCleanup  *task.Periodic
+	highWatermark int
+	requestGroup  singleflight.Group
+}
+
+func NewCacheController(name string, disableCache bool, serveStale bool, serveExpiredTTL uint32) *CacheController {
+	c := &CacheController{
+		name:            name,
+		disableCache:    disableCache,
+		serveStale:      serveStale,
+		serveExpiredTTL: -int32(serveExpiredTTL),
+		ips:             make(map[string]*record),
+		pub:             pubsub.NewService(),
+	}
+
+	c.cacheCleanup = &task.Periodic{
+		Interval: 300 * time.Second,
+		Execute:  c.CacheCleanup,
+	}
+	return c
+}
+
+// CacheCleanup clears expired items from cache
+func (c *CacheController) CacheCleanup() error {
+	expiredKeys, err := c.collectExpiredKeys()
+	if err != nil {
+		return err
+	}
+	if len(expiredKeys) == 0 {
+		return nil
+	}
+	c.writeAndShrink(expiredKeys)
+	return nil
+}
+
+func (c *CacheController) collectExpiredKeys() ([]string, error) {
+	c.RLock()
+	defer c.RUnlock()
+
+	if len(c.ips) == 0 {
+		return nil, errors.New("nothing to do. stopping...")
+	}
+
+	// skip collection if a migration is in progress
+	if c.dirtyips != nil {
+		return nil, nil
+	}
+
+	now := time.Now()
+	if c.serveStale && c.serveExpiredTTL != 0 {
+		now = now.Add(time.Duration(c.serveExpiredTTL) * time.Second)
+	}
+
+	expiredKeys := make([]string, 0, len(c.ips)/4) // pre-allocate
+
+	for domain, rec := range c.ips {
+		if (rec.A != nil && rec.A.Expire.Before(now)) ||
+			(rec.AAAA != nil && rec.AAAA.Expire.Before(now)) {
+			expiredKeys = append(expiredKeys, domain)
+		}
+	}
+
+	return expiredKeys, nil
+}
+
+func (c *CacheController) writeAndShrink(expiredKeys []string) {
+	c.Lock()
+	defer c.Unlock()
+
+	// double check to prevent upper call multiple cleanup tasks
+	if c.dirtyips != nil {
+		return
+	}
+
+	lenBefore := len(c.ips)
+	if lenBefore > c.highWatermark {
+		c.highWatermark = lenBefore
+	}
+
+	now := time.Now()
+	if c.serveStale && c.serveExpiredTTL != 0 {
+		now = now.Add(time.Duration(c.serveExpiredTTL) * time.Second)
+	}
+
+	for _, domain := range expiredKeys {
+		rec := c.ips[domain]
+		if rec == nil {
+			continue
+		}
+		if rec.A != nil && rec.A.Expire.Before(now) {
+			rec.A = nil
+		}
+		if rec.AAAA != nil && rec.AAAA.Expire.Before(now) {
+			rec.AAAA = nil
+		}
+		if rec.A == nil && rec.AAAA == nil {
+			delete(c.ips, domain)
+		}
+	}
+
+	lenAfter := len(c.ips)
+
+	if lenAfter == 0 {
+		if c.highWatermark >= minSizeForEmptyRebuild {
+			errors.LogDebug(
+				context.Background(), c.name,
+				" rebuilding empty cache map to reclaim memory.",
+				" size_before_cleanup=", lenBefore,
+				" peak_size_before_rebuild=", c.highWatermark,
+			)
+
+			c.ips = make(map[string]*record)
+			c.highWatermark = 0
+		}
+		return
+	}
+
+	if reductionFromPeak := c.highWatermark - lenAfter; reductionFromPeak > shrinkAbsoluteThreshold &&
+		float64(reductionFromPeak) > float64(c.highWatermark)*shrinkRatioThreshold {
+		errors.LogDebug(
+			context.Background(), c.name,
+			" shrinking cache map to reclaim memory.",
+			" new_size=", lenAfter,
+			" peak_size_before_shrink=", c.highWatermark,
+			" reduction_since_peak=", reductionFromPeak,
+		)
+
+		c.dirtyips = c.ips
+		c.ips = make(map[string]*record, int(float64(lenAfter)*1.1))
+		c.highWatermark = lenAfter
+		go c.migrate()
+	}
+}
+
+type migrationEntry struct {
+	key   string
+	value *record
+}
+
+func (c *CacheController) migrate() {
+	defer func() {
+		if r := recover(); r != nil {
+			errors.LogError(context.Background(), c.name, " panic during cache migration: ", r)
+			c.Lock()
+			c.dirtyips = nil
+			// c.ips = make(map[string]*record)
+			// c.highWatermark = 0
+			c.Unlock()
+		}
+	}()
+
+	c.RLock()
+	dirtyips := c.dirtyips
+	c.RUnlock()
+
+	// double check to prevent upper call multiple cleanup tasks
+	if dirtyips == nil {
+		return
+	}
+
+	errors.LogDebug(context.Background(), c.name, " starting background cache migration for ", len(dirtyips), " items")
+
+	batch := make([]migrationEntry, 0, migrationBatchSize)
+	for domain, recD := range dirtyips {
+		batch = append(batch, migrationEntry{domain, recD})
+
+		if len(batch) >= migrationBatchSize {
+			c.flush(batch)
+			batch = batch[:0]
+			runtime.Gosched()
+		}
+	}
+	if len(batch) > 0 {
+		c.flush(batch)
+	}
+
+	c.Lock()
+	c.dirtyips = nil
+	c.Unlock()
+
+	errors.LogDebug(context.Background(), c.name, " cache migration completed")
+}
+
+func (c *CacheController) flush(batch []migrationEntry) {
+	c.Lock()
+	defer c.Unlock()
+
+	for _, dirty := range batch {
+		if cur := c.ips[dirty.key]; cur != nil {
+			merge := &record{}
+			if cur.A == nil {
+				merge.A = dirty.value.A
+			} else {
+				merge.A = cur.A
+			}
+			if cur.AAAA == nil {
+				merge.AAAA = dirty.value.AAAA
+			} else {
+				merge.AAAA = cur.AAAA
+			}
+			c.ips[dirty.key] = merge
+		} else {
+			c.ips[dirty.key] = dirty.value
+		}
+	}
+}
+
+func (c *CacheController) updateRecord(req *dnsRequest, rep *IPRecord) {
+	rtt := time.Since(req.start)
+
+	switch req.reqType {
+	case dnsmessage.TypeA:
+		c.pub.Publish(req.domain+"4", rep)
+	case dnsmessage.TypeAAAA:
+		c.pub.Publish(req.domain+"6", rep)
+	}
+
+	if c.disableCache {
+		errors.LogInfo(context.Background(), c.name, " got answer: ", req.domain, " ", req.reqType, " -> ", rep.IP, ", rtt: ", rtt)
+		return
+	}
+
+	c.Lock()
+	lockWait := time.Since(req.start) - rtt
+
+	newRec := &record{}
+	oldRec := c.ips[req.domain]
+	var dirtyRec *record
+	if c.dirtyips != nil {
+		dirtyRec = c.dirtyips[req.domain]
+	}
+
+	var pubRecord *IPRecord
+	var pubSuffix string
+
+	switch req.reqType {
+	case dnsmessage.TypeA:
+		newRec.A = rep
+		if oldRec != nil && oldRec.AAAA != nil {
+			newRec.AAAA = oldRec.AAAA
+			pubRecord = oldRec.AAAA
+		} else if dirtyRec != nil && dirtyRec.AAAA != nil {
+			pubRecord = dirtyRec.AAAA
+		}
+		pubSuffix = "6"
+	case dnsmessage.TypeAAAA:
+		newRec.AAAA = rep
+		if oldRec != nil && oldRec.A != nil {
+			newRec.A = oldRec.A
+			pubRecord = oldRec.A
+		} else if dirtyRec != nil && dirtyRec.A != nil {
+			pubRecord = dirtyRec.A
+		}
+		pubSuffix = "4"
+	}
+
+	c.ips[req.domain] = newRec
+	c.Unlock()
+
+	if pubRecord != nil {
+		_, ttl, err := pubRecord.getIPs()
+		if ttl > 0 && !go_errors.Is(err, errRecordNotFound) {
+			c.pub.Publish(req.domain+pubSuffix, pubRecord)
+		}
+	}
+
+	errors.LogInfo(context.Background(), c.name, " got answer: ", req.domain, " ", req.reqType, " -> ", rep.IP, ", rtt: ", rtt, ", lock: ", lockWait)
+
+	if !c.serveStale || c.serveExpiredTTL != 0 {
+		common.Must(c.cacheCleanup.Start())
+	}
+}
+
+func (c *CacheController) findRecords(domain string) *record {
+	c.RLock()
+	defer c.RUnlock()
+
+	rec := c.ips[domain]
+	if rec == nil && c.dirtyips != nil {
+		rec = c.dirtyips[domain]
+	}
+	return rec
+}
+
+func (c *CacheController) registerSubscribers(domain string, option dns_feature.IPOption) (sub4 *pubsub.Subscriber, sub6 *pubsub.Subscriber) {
+	// ipv4 and ipv6 belong to different subscription groups
+	if option.IPv4Enable {
+		sub4 = c.pub.Subscribe(domain + "4")
+	}
+	if option.IPv6Enable {
+		sub6 = c.pub.Subscribe(domain + "6")
+	}
+	return
+}
+
+func closeSubscribers(sub4 *pubsub.Subscriber, sub6 *pubsub.Subscriber) {
+	if sub4 != nil {
+		sub4.Close()
+	}
+	if sub6 != nil {
+		sub6.Close()
+	}
+}

app/dns/config.go

@@ -2,48 +2,24 @@ package dns
 
 import (
 	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/common/geodata"
 	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/common/strmatcher"
 	"github.com/xtls/xray-core/common/uuid"
 )
 
-var typeMap = map[DomainMatchingType]strmatcher.Type{
-	DomainMatchingType_Full:      strmatcher.Full,
-	DomainMatchingType_Subdomain: strmatcher.Domain,
-	DomainMatchingType_Keyword:   strmatcher.Substr,
-	DomainMatchingType_Regex:     strmatcher.Regex,
-}
-
 // References:
 // https://www.iana.org/assignments/special-use-domain-names/special-use-domain-names.xhtml
 // https://unix.stackexchange.com/questions/92441/whats-the-difference-between-local-home-and-lan
-var localTLDsAndDotlessDomains = []*NameServer_PriorityDomain{
-	{Type: DomainMatchingType_Regex, Domain: "^[^.]+$"}, // This will only match domains without any dot
-	{Type: DomainMatchingType_Subdomain, Domain: "local"},
-	{Type: DomainMatchingType_Subdomain, Domain: "localdomain"},
-	{Type: DomainMatchingType_Subdomain, Domain: "localhost"},
-	{Type: DomainMatchingType_Subdomain, Domain: "lan"},
-	{Type: DomainMatchingType_Subdomain, Domain: "home.arpa"},
-	{Type: DomainMatchingType_Subdomain, Domain: "example"},
-	{Type: DomainMatchingType_Subdomain, Domain: "invalid"},
-	{Type: DomainMatchingType_Subdomain, Domain: "test"},
-}
-
-var localTLDsAndDotlessDomainsRule = &NameServer_OriginalRule{
-	Rule: "geosite:private",
-	Size: uint32(len(localTLDsAndDotlessDomains)),
-}
-
-func toStrMatcher(t DomainMatchingType, domain string) (strmatcher.Matcher, error) {
-	strMType, f := typeMap[t]
-	if !f {
-		return nil, errors.New("unknown mapping type", t).AtWarning()
-	}
-	matcher, err := strMType.New(domain)
-	if err != nil {
-		return nil, errors.New("failed to create str matcher").Base(err)
-	}
-	return matcher, nil
+var localTLDsAndDotlessDomainsRules = []*geodata.DomainRule{
+	{Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Regex, Value: "^[^.]+$"}}}, // This will only match domains without any dot
+	{Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Domain, Value: "local"}}},
+	{Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Domain, Value: "localdomain"}}},
+	{Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Domain, Value: "localhost"}}},
+	{Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Domain, Value: "lan"}}},
+	{Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Domain, Value: "home.arpa"}}},
+	{Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Domain, Value: "example"}}},
+	{Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Domain, Value: "invalid"}}},
+	{Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Domain, Value: "test"}}},
 }
 
 func toNetIP(addrs []net.Address) ([]net.IP, error) {

app/dns/config.pb.go

@@ -1,18 +1,19 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.1
-// 	protoc        v5.27.0
+// 	protoc-gen-go v1.36.11
+// 	protoc        v6.33.5
 // source: app/dns/config.proto
 
 package dns
 
 import (
-	router "github.com/xtls/xray-core/app/router"
+	geodata "github.com/xtls/xray-core/common/geodata"
 	net "github.com/xtls/xray-core/common/net"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	reflect "reflect"
 	sync "sync"
+	unsafe "unsafe"
 )
 
 const (
@@ -22,64 +23,13 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
-type DomainMatchingType int32
-
-const (
-	DomainMatchingType_Full      DomainMatchingType = 0
-	DomainMatchingType_Subdomain DomainMatchingType = 1
-	DomainMatchingType_Keyword   DomainMatchingType = 2
-	DomainMatchingType_Regex     DomainMatchingType = 3
-)
-
-// Enum value maps for DomainMatchingType.
-var (
-	DomainMatchingType_name = map[int32]string{
-		0: "Full",
-		1: "Subdomain",
-		2: "Keyword",
-		3: "Regex",
-	}
-	DomainMatchingType_value = map[string]int32{
-		"Full":      0,
-		"Subdomain": 1,
-		"Keyword":   2,
-		"Regex":     3,
-	}
-)
-
-func (x DomainMatchingType) Enum() *DomainMatchingType {
-	p := new(DomainMatchingType)
-	*p = x
-	return p
-}
-
-func (x DomainMatchingType) String() string {
-	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
-}
-
-func (DomainMatchingType) Descriptor() protoreflect.EnumDescriptor {
-	return file_app_dns_config_proto_enumTypes[0].Descriptor()
-}
-
-func (DomainMatchingType) Type() protoreflect.EnumType {
-	return &file_app_dns_config_proto_enumTypes[0]
-}
-
-func (x DomainMatchingType) Number() protoreflect.EnumNumber {
-	return protoreflect.EnumNumber(x)
-}
-
-// Deprecated: Use DomainMatchingType.Descriptor instead.
-func (DomainMatchingType) EnumDescriptor() ([]byte, []int) {
-	return file_app_dns_config_proto_rawDescGZIP(), []int{0}
-}
-
 type QueryStrategy int32
 
 const (
 	QueryStrategy_USE_IP  QueryStrategy = 0
 	QueryStrategy_USE_IP4 QueryStrategy = 1
 	QueryStrategy_USE_IP6 QueryStrategy = 2
+	QueryStrategy_USE_SYS QueryStrategy = 3
 )
 
 // Enum value maps for QueryStrategy.
@@ -88,11 +38,13 @@ var (
 		0: "USE_IP",
 		1: "USE_IP4",
 		2: "USE_IP6",
+		3: "USE_SYS",
 	}
 	QueryStrategy_value = map[string]int32{
 		"USE_IP":  0,
 		"USE_IP4": 1,
 		"USE_IP6": 2,
+		"USE_SYS": 3,
 	}
 )
 
@@ -107,11 +59,11 @@ func (x QueryStrategy) String() string {
 }
 
 func (QueryStrategy) Descriptor() protoreflect.EnumDescriptor {
-	return file_app_dns_config_proto_enumTypes[1].Descriptor()
+	return file_app_dns_config_proto_enumTypes[0].Descriptor()
 }
 
 func (QueryStrategy) Type() protoreflect.EnumType {
-	return &file_app_dns_config_proto_enumTypes[1]
+	return &file_app_dns_config_proto_enumTypes[0]
 }
 
 func (x QueryStrategy) Number() protoreflect.EnumNumber {
@@ -120,30 +72,36 @@ func (x QueryStrategy) Number() protoreflect.EnumNumber {
 
 // Deprecated: Use QueryStrategy.Descriptor instead.
 func (QueryStrategy) EnumDescriptor() ([]byte, []int) {
-	return file_app_dns_config_proto_rawDescGZIP(), []int{1}
+	return file_app_dns_config_proto_rawDescGZIP(), []int{0}
 }
 
 type NameServer struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Address           *net.Endpoint                `protobuf:"bytes,1,opt,name=address,proto3" json:"address,omitempty"`
-	ClientIp          []byte                       `protobuf:"bytes,5,opt,name=client_ip,json=clientIp,proto3" json:"client_ip,omitempty"`
-	SkipFallback      bool                         `protobuf:"varint,6,opt,name=skipFallback,proto3" json:"skipFallback,omitempty"`
-	PrioritizedDomain []*NameServer_PriorityDomain `protobuf:"bytes,2,rep,name=prioritized_domain,json=prioritizedDomain,proto3" json:"prioritized_domain,omitempty"`
-	Geoip             []*router.GeoIP              `protobuf:"bytes,3,rep,name=geoip,proto3" json:"geoip,omitempty"`
-	OriginalRules     []*NameServer_OriginalRule   `protobuf:"bytes,4,rep,name=original_rules,json=originalRules,proto3" json:"original_rules,omitempty"`
-	QueryStrategy     QueryStrategy                `protobuf:"varint,7,opt,name=query_strategy,json=queryStrategy,proto3,enum=xray.app.dns.QueryStrategy" json:"query_strategy,omitempty"`
+	state           protoimpl.MessageState `protogen:"open.v1"`
+	Address         *net.Endpoint          `protobuf:"bytes,1,opt,name=address,proto3" json:"address,omitempty"`
+	ClientIp        []byte                 `protobuf:"bytes,5,opt,name=client_ip,json=clientIp,proto3" json:"client_ip,omitempty"`
+	SkipFallback    bool                   `protobuf:"varint,6,opt,name=skipFallback,proto3" json:"skipFallback,omitempty"`
+	Domain          []*geodata.DomainRule  `protobuf:"bytes,2,rep,name=domain,proto3" json:"domain,omitempty"`
+	ExpectedIp      []*geodata.IPRule      `protobuf:"bytes,3,rep,name=expected_ip,json=expectedIp,proto3" json:"expected_ip,omitempty"`
+	QueryStrategy   QueryStrategy          `protobuf:"varint,7,opt,name=query_strategy,json=queryStrategy,proto3,enum=xray.app.dns.QueryStrategy" json:"query_strategy,omitempty"`
+	ActPrior        bool                   `protobuf:"varint,8,opt,name=actPrior,proto3" json:"actPrior,omitempty"`
+	Tag             string                 `protobuf:"bytes,9,opt,name=tag,proto3" json:"tag,omitempty"`
+	TimeoutMs       uint64                 `protobuf:"varint,10,opt,name=timeoutMs,proto3" json:"timeoutMs,omitempty"`
+	DisableCache    *bool                  `protobuf:"varint,11,opt,name=disableCache,proto3,oneof" json:"disableCache,omitempty"`
+	ServeStale      *bool                  `protobuf:"varint,15,opt,name=serveStale,proto3,oneof" json:"serveStale,omitempty"`
+	ServeExpiredTTL *uint32                `protobuf:"varint,16,opt,name=serveExpiredTTL,proto3,oneof" json:"serveExpiredTTL,omitempty"`
+	FinalQuery      bool                   `protobuf:"varint,12,opt,name=finalQuery,proto3" json:"finalQuery,omitempty"`
+	UnexpectedIp    []*geodata.IPRule      `protobuf:"bytes,13,rep,name=unexpected_ip,json=unexpectedIp,proto3" json:"unexpected_ip,omitempty"`
+	ActUnprior      bool                   `protobuf:"varint,14,opt,name=actUnprior,proto3" json:"actUnprior,omitempty"`
+	PolicyID        uint32                 `protobuf:"varint,17,opt,name=policyID,proto3" json:"policyID,omitempty"`
+	unknownFields   protoimpl.UnknownFields
+	sizeCache       protoimpl.SizeCache
 }
 
 func (x *NameServer) Reset() {
 	*x = NameServer{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_dns_config_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_dns_config_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *NameServer) String() string {
@@ -154,7 +112,7 @@ func (*NameServer) ProtoMessage() {}
 
 func (x *NameServer) ProtoReflect() protoreflect.Message {
 	mi := &file_app_dns_config_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -190,23 +148,16 @@ func (x *NameServer) GetSkipFallback() bool {
 	return false
 }
 
-func (x *NameServer) GetPrioritizedDomain() []*NameServer_PriorityDomain {
+func (x *NameServer) GetDomain() []*geodata.DomainRule {
 	if x != nil {
-		return x.PrioritizedDomain
+		return x.Domain
 	}
 	return nil
 }
 
-func (x *NameServer) GetGeoip() []*router.GeoIP {
+func (x *NameServer) GetExpectedIp() []*geodata.IPRule {
 	if x != nil {
-		return x.Geoip
-	}
-	return nil
-}
-
-func (x *NameServer) GetOriginalRules() []*NameServer_OriginalRule {
-	if x != nil {
-		return x.OriginalRules
+		return x.ExpectedIp
 	}
 	return nil
 }
@@ -218,24 +169,81 @@ func (x *NameServer) GetQueryStrategy() QueryStrategy {
 	return QueryStrategy_USE_IP
 }
 
-type Config struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
+func (x *NameServer) GetActPrior() bool {
+	if x != nil {
+		return x.ActPrior
+	}
+	return false
+}
 
-	// Nameservers used by this DNS. Only traditional UDP servers are support at
-	// the moment. A special value 'localhost' as a domain address can be set to
-	// use DNS on local system.
-	//
-	// Deprecated: Marked as deprecated in app/dns/config.proto.
-	NameServers []*net.Endpoint `protobuf:"bytes,1,rep,name=NameServers,proto3" json:"NameServers,omitempty"`
+func (x *NameServer) GetTag() string {
+	if x != nil {
+		return x.Tag
+	}
+	return ""
+}
+
+func (x *NameServer) GetTimeoutMs() uint64 {
+	if x != nil {
+		return x.TimeoutMs
+	}
+	return 0
+}
+
+func (x *NameServer) GetDisableCache() bool {
+	if x != nil && x.DisableCache != nil {
+		return *x.DisableCache
+	}
+	return false
+}
+
+func (x *NameServer) GetServeStale() bool {
+	if x != nil && x.ServeStale != nil {
+		return *x.ServeStale
+	}
+	return false
+}
+
+func (x *NameServer) GetServeExpiredTTL() uint32 {
+	if x != nil && x.ServeExpiredTTL != nil {
+		return *x.ServeExpiredTTL
+	}
+	return 0
+}
+
+func (x *NameServer) GetFinalQuery() bool {
+	if x != nil {
+		return x.FinalQuery
+	}
+	return false
+}
+
+func (x *NameServer) GetUnexpectedIp() []*geodata.IPRule {
+	if x != nil {
+		return x.UnexpectedIp
+	}
+	return nil
+}
+
+func (x *NameServer) GetActUnprior() bool {
+	if x != nil {
+		return x.ActUnprior
+	}
+	return false
+}
+
+func (x *NameServer) GetPolicyID() uint32 {
+	if x != nil {
+		return x.PolicyID
+	}
+	return 0
+}
+
+type Config struct {
+	state protoimpl.MessageState `protogen:"open.v1"`
 	// NameServer list used by this DNS client.
+	// A special value 'localhost' as a domain address can be set to use DNS on local system.
 	NameServer []*NameServer `protobuf:"bytes,5,rep,name=name_server,json=nameServer,proto3" json:"name_server,omitempty"`
-	// Static hosts. Domain to IP.
-	// Deprecated. Use static_hosts.
-	//
-	// Deprecated: Marked as deprecated in app/dns/config.proto.
-	Hosts map[string]*net.IPOrDomain `protobuf:"bytes,2,rep,name=Hosts,proto3" json:"Hosts,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 	// Client IP for EDNS client subnet. Must be 4 bytes (IPv4) or 16 bytes
 	// (IPv6).
 	ClientIp    []byte                `protobuf:"bytes,3,opt,name=client_ip,json=clientIp,proto3" json:"client_ip,omitempty"`
@@ -244,18 +252,21 @@ type Config struct {
 	Tag string `protobuf:"bytes,6,opt,name=tag,proto3" json:"tag,omitempty"`
 	// DisableCache disables DNS cache
 	DisableCache           bool          `protobuf:"varint,8,opt,name=disableCache,proto3" json:"disableCache,omitempty"`
+	ServeStale             bool          `protobuf:"varint,12,opt,name=serveStale,proto3" json:"serveStale,omitempty"`
+	ServeExpiredTTL        uint32        `protobuf:"varint,13,opt,name=serveExpiredTTL,proto3" json:"serveExpiredTTL,omitempty"`
 	QueryStrategy          QueryStrategy `protobuf:"varint,9,opt,name=query_strategy,json=queryStrategy,proto3,enum=xray.app.dns.QueryStrategy" json:"query_strategy,omitempty"`
 	DisableFallback        bool          `protobuf:"varint,10,opt,name=disableFallback,proto3" json:"disableFallback,omitempty"`
 	DisableFallbackIfMatch bool          `protobuf:"varint,11,opt,name=disableFallbackIfMatch,proto3" json:"disableFallbackIfMatch,omitempty"`
+	EnableParallelQuery    bool          `protobuf:"varint,14,opt,name=enableParallelQuery,proto3" json:"enableParallelQuery,omitempty"`
+	unknownFields          protoimpl.UnknownFields
+	sizeCache              protoimpl.SizeCache
 }
 
 func (x *Config) Reset() {
 	*x = Config{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_dns_config_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_dns_config_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Config) String() string {
@@ -266,7 +277,7 @@ func (*Config) ProtoMessage() {}
 
 func (x *Config) ProtoReflect() protoreflect.Message {
 	mi := &file_app_dns_config_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -281,14 +292,6 @@ func (*Config) Descriptor() ([]byte, []int) {
 	return file_app_dns_config_proto_rawDescGZIP(), []int{1}
 }
 
-// Deprecated: Marked as deprecated in app/dns/config.proto.
-func (x *Config) GetNameServers() []*net.Endpoint {
-	if x != nil {
-		return x.NameServers
-	}
-	return nil
-}
-
 func (x *Config) GetNameServer() []*NameServer {
 	if x != nil {
 		return x.NameServer
@@ -296,14 +299,6 @@ func (x *Config) GetNameServer() []*NameServer {
 	return nil
 }
 
-// Deprecated: Marked as deprecated in app/dns/config.proto.
-func (x *Config) GetHosts() map[string]*net.IPOrDomain {
-	if x != nil {
-		return x.Hosts
-	}
-	return nil
-}
-
 func (x *Config) GetClientIp() []byte {
 	if x != nil {
 		return x.ClientIp
@@ -332,6 +327,20 @@ func (x *Config) GetDisableCache() bool {
 	return false
 }
 
+func (x *Config) GetServeStale() bool {
+	if x != nil {
+		return x.ServeStale
+	}
+	return false
+}
+
+func (x *Config) GetServeExpiredTTL() uint32 {
+	if x != nil {
+		return x.ServeExpiredTTL
+	}
+	return 0
+}
+
 func (x *Config) GetQueryStrategy() QueryStrategy {
 	if x != nil {
 		return x.QueryStrategy
@@ -353,136 +362,29 @@ func (x *Config) GetDisableFallbackIfMatch() bool {
 	return false
 }
 
-type NameServer_PriorityDomain struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Type   DomainMatchingType `protobuf:"varint,1,opt,name=type,proto3,enum=xray.app.dns.DomainMatchingType" json:"type,omitempty"`
-	Domain string             `protobuf:"bytes,2,opt,name=domain,proto3" json:"domain,omitempty"`
-}
-
-func (x *NameServer_PriorityDomain) Reset() {
-	*x = NameServer_PriorityDomain{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_dns_config_proto_msgTypes[2]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *NameServer_PriorityDomain) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*NameServer_PriorityDomain) ProtoMessage() {}
-
-func (x *NameServer_PriorityDomain) ProtoReflect() protoreflect.Message {
-	mi := &file_app_dns_config_proto_msgTypes[2]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use NameServer_PriorityDomain.ProtoReflect.Descriptor instead.
-func (*NameServer_PriorityDomain) Descriptor() ([]byte, []int) {
-	return file_app_dns_config_proto_rawDescGZIP(), []int{0, 0}
-}
-
-func (x *NameServer_PriorityDomain) GetType() DomainMatchingType {
+func (x *Config) GetEnableParallelQuery() bool {
 	if x != nil {
-		return x.Type
+		return x.EnableParallelQuery
 	}
-	return DomainMatchingType_Full
-}
-
-func (x *NameServer_PriorityDomain) GetDomain() string {
-	if x != nil {
-		return x.Domain
-	}
-	return ""
-}
-
-type NameServer_OriginalRule struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Rule string `protobuf:"bytes,1,opt,name=rule,proto3" json:"rule,omitempty"`
-	Size uint32 `protobuf:"varint,2,opt,name=size,proto3" json:"size,omitempty"`
-}
-
-func (x *NameServer_OriginalRule) Reset() {
-	*x = NameServer_OriginalRule{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_dns_config_proto_msgTypes[3]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *NameServer_OriginalRule) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*NameServer_OriginalRule) ProtoMessage() {}
-
-func (x *NameServer_OriginalRule) ProtoReflect() protoreflect.Message {
-	mi := &file_app_dns_config_proto_msgTypes[3]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use NameServer_OriginalRule.ProtoReflect.Descriptor instead.
-func (*NameServer_OriginalRule) Descriptor() ([]byte, []int) {
-	return file_app_dns_config_proto_rawDescGZIP(), []int{0, 1}
-}
-
-func (x *NameServer_OriginalRule) GetRule() string {
-	if x != nil {
-		return x.Rule
-	}
-	return ""
-}
-
-func (x *NameServer_OriginalRule) GetSize() uint32 {
-	if x != nil {
-		return x.Size
-	}
-	return 0
+	return false
 }
 
 type Config_HostMapping struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Type   DomainMatchingType `protobuf:"varint,1,opt,name=type,proto3,enum=xray.app.dns.DomainMatchingType" json:"type,omitempty"`
-	Domain string             `protobuf:"bytes,2,opt,name=domain,proto3" json:"domain,omitempty"`
-	Ip     [][]byte           `protobuf:"bytes,3,rep,name=ip,proto3" json:"ip,omitempty"`
+	state  protoimpl.MessageState `protogen:"open.v1"`
+	Domain *geodata.DomainRule    `protobuf:"bytes,2,opt,name=domain,proto3" json:"domain,omitempty"`
+	Ip     [][]byte               `protobuf:"bytes,3,rep,name=ip,proto3" json:"ip,omitempty"`
 	// ProxiedDomain indicates the mapped domain has the same IP address on this
 	// domain. Xray will use this domain for IP queries.
 	ProxiedDomain string `protobuf:"bytes,4,opt,name=proxied_domain,json=proxiedDomain,proto3" json:"proxied_domain,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *Config_HostMapping) Reset() {
 	*x = Config_HostMapping{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_dns_config_proto_msgTypes[5]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_dns_config_proto_msgTypes[2]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Config_HostMapping) String() string {
@@ -492,8 +394,8 @@ func (x *Config_HostMapping) String() string {
 func (*Config_HostMapping) ProtoMessage() {}
 
 func (x *Config_HostMapping) ProtoReflect() protoreflect.Message {
-	mi := &file_app_dns_config_proto_msgTypes[5]
-	if protoimpl.UnsafeEnabled && x != nil {
+	mi := &file_app_dns_config_proto_msgTypes[2]
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -505,21 +407,14 @@ func (x *Config_HostMapping) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Config_HostMapping.ProtoReflect.Descriptor instead.
 func (*Config_HostMapping) Descriptor() ([]byte, []int) {
-	return file_app_dns_config_proto_rawDescGZIP(), []int{1, 1}
+	return file_app_dns_config_proto_rawDescGZIP(), []int{1, 0}
 }
 
-func (x *Config_HostMapping) GetType() DomainMatchingType {
-	if x != nil {
-		return x.Type
-	}
-	return DomainMatchingType_Full
-}
-
-func (x *Config_HostMapping) GetDomain() string {
+func (x *Config_HostMapping) GetDomain() *geodata.DomainRule {
 	if x != nil {
 		return x.Domain
 	}
-	return ""
+	return nil
 }
 
 func (x *Config_HostMapping) GetIp() [][]byte {
@@ -538,158 +433,104 @@ func (x *Config_HostMapping) GetProxiedDomain() string {
 
 var File_app_dns_config_proto protoreflect.FileDescriptor
 
-var file_app_dns_config_proto_rawDesc = []byte{
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-	0x65, 0x52, 0x04, 0x74, 0x79, 0x70, 0x65, 0x12, 0x16, 0x0a, 0x06, 0x64, 0x6f, 0x6d, 0x61, 0x69,
-	0x6e, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x06, 0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x12,
-	0x0e, 0x0a, 0x02, 0x69, 0x70, 0x18, 0x03, 0x20, 0x03, 0x28, 0x0c, 0x52, 0x02, 0x69, 0x70, 0x12,
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-	0x6e, 0x18, 0x04, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0d, 0x70, 0x72, 0x6f, 0x78, 0x69, 0x65, 0x64,
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-	0x70, 0x65, 0x12, 0x08, 0x0a, 0x04, 0x46, 0x75, 0x6c, 0x6c, 0x10, 0x00, 0x12, 0x0d, 0x0a, 0x09,
-	0x53, 0x75, 0x62, 0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x10, 0x01, 0x12, 0x0b, 0x0a, 0x07, 0x4b,
-	0x65, 0x79, 0x77, 0x6f, 0x72, 0x64, 0x10, 0x02, 0x12, 0x09, 0x0a, 0x05, 0x52, 0x65, 0x67, 0x65,
-	0x78, 0x10, 0x03, 0x2a, 0x35, 0x0a, 0x0d, 0x51, 0x75, 0x65, 0x72, 0x79, 0x53, 0x74, 0x72, 0x61,
-	0x74, 0x65, 0x67, 0x79, 0x12, 0x0a, 0x0a, 0x06, 0x55, 0x53, 0x45, 0x5f, 0x49, 0x50, 0x10, 0x00,
-	0x12, 0x0b, 0x0a, 0x07, 0x55, 0x53, 0x45, 0x5f, 0x49, 0x50, 0x34, 0x10, 0x01, 0x12, 0x0b, 0x0a,
-	0x07, 0x55, 0x53, 0x45, 0x5f, 0x49, 0x50, 0x36, 0x10, 0x02, 0x42, 0x46, 0x0a, 0x10, 0x63, 0x6f,
-	0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x64, 0x6e, 0x73, 0x50, 0x01,
-	0x5a, 0x21, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c,
-	0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x61, 0x70, 0x70, 0x2f,
-	0x64, 0x6e, 0x73, 0xaa, 0x02, 0x0c, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x44,
-	0x6e, 0x73, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
-}
+const file_app_dns_config_proto_rawDesc = "" +
+	"\n" +
+	"\x14app/dns/config.proto\x12\fxray.app.dns\x1a\x1ccommon/net/destination.proto\x1a\x1bcommon/geodata/geodat.proto\"\xde\x05\n" +
+	"\n" +
+	"NameServer\x123\n" +
+	"\aaddress\x18\x01 \x01(\v2\x19.xray.common.net.EndpointR\aaddress\x12\x1b\n" +
+	"\tclient_ip\x18\x05 \x01(\fR\bclientIp\x12\"\n" +
+	"\fskipFallback\x18\x06 \x01(\bR\fskipFallback\x127\n" +
+	"\x06domain\x18\x02 \x03(\v2\x1f.xray.common.geodata.DomainRuleR\x06domain\x12<\n" +
+	"\vexpected_ip\x18\x03 \x03(\v2\x1b.xray.common.geodata.IPRuleR\n" +
+	"expectedIp\x12B\n" +
+	"\x0equery_strategy\x18\a \x01(\x0e2\x1b.xray.app.dns.QueryStrategyR\rqueryStrategy\x12\x1a\n" +
+	"\bactPrior\x18\b \x01(\bR\bactPrior\x12\x10\n" +
+	"\x03tag\x18\t \x01(\tR\x03tag\x12\x1c\n" +
+	"\ttimeoutMs\x18\n" +
+	" \x01(\x04R\ttimeoutMs\x12'\n" +
+	"\fdisableCache\x18\v \x01(\bH\x00R\fdisableCache\x88\x01\x01\x12#\n" +
+	"\n" +
+	"serveStale\x18\x0f \x01(\bH\x01R\n" +
+	"serveStale\x88\x01\x01\x12-\n" +
+	"\x0fserveExpiredTTL\x18\x10 \x01(\rH\x02R\x0fserveExpiredTTL\x88\x01\x01\x12\x1e\n" +
+	"\n" +
+	"finalQuery\x18\f \x01(\bR\n" +
+	"finalQuery\x12@\n" +
+	"\runexpected_ip\x18\r \x03(\v2\x1b.xray.common.geodata.IPRuleR\funexpectedIp\x12\x1e\n" +
+	"\n" +
+	"actUnprior\x18\x0e \x01(\bR\n" +
+	"actUnprior\x12\x1a\n" +
+	"\bpolicyID\x18\x11 \x01(\rR\bpolicyIDB\x0f\n" +
+	"\r_disableCacheB\r\n" +
+	"\v_serveStaleB\x12\n" +
+	"\x10_serveExpiredTTLJ\x04\b\x04\x10\x05\"\x82\x05\n" +
+	"\x06Config\x129\n" +
+	"\vname_server\x18\x05 \x03(\v2\x18.xray.app.dns.NameServerR\n" +
+	"nameServer\x12\x1b\n" +
+	"\tclient_ip\x18\x03 \x01(\fR\bclientIp\x12C\n" +
+	"\fstatic_hosts\x18\x04 \x03(\v2 .xray.app.dns.Config.HostMappingR\vstaticHosts\x12\x10\n" +
+	"\x03tag\x18\x06 \x01(\tR\x03tag\x12\"\n" +
+	"\fdisableCache\x18\b \x01(\bR\fdisableCache\x12\x1e\n" +
+	"\n" +
+	"serveStale\x18\f \x01(\bR\n" +
+	"serveStale\x12(\n" +
+	"\x0fserveExpiredTTL\x18\r \x01(\rR\x0fserveExpiredTTL\x12B\n" +
+	"\x0equery_strategy\x18\t \x01(\x0e2\x1b.xray.app.dns.QueryStrategyR\rqueryStrategy\x12(\n" +
+	"\x0fdisableFallback\x18\n" +
+	" \x01(\bR\x0fdisableFallback\x126\n" +
+	"\x16disableFallbackIfMatch\x18\v \x01(\bR\x16disableFallbackIfMatch\x120\n" +
+	"\x13enableParallelQuery\x18\x0e \x01(\bR\x13enableParallelQuery\x1a}\n" +
+	"\vHostMapping\x127\n" +
+	"\x06domain\x18\x02 \x01(\v2\x1f.xray.common.geodata.DomainRuleR\x06domain\x12\x0e\n" +
+	"\x02ip\x18\x03 \x03(\fR\x02ip\x12%\n" +
+	"\x0eproxied_domain\x18\x04 \x01(\tR\rproxiedDomainJ\x04\b\a\x10\b*B\n" +
+	"\rQueryStrategy\x12\n" +
+	"\n" +
+	"\x06USE_IP\x10\x00\x12\v\n" +
+	"\aUSE_IP4\x10\x01\x12\v\n" +
+	"\aUSE_IP6\x10\x02\x12\v\n" +
+	"\aUSE_SYS\x10\x03BF\n" +
+	"\x10com.xray.app.dnsP\x01Z!github.com/xtls/xray-core/app/dns\xaa\x02\fXray.App.Dnsb\x06proto3"
 
 var (
 	file_app_dns_config_proto_rawDescOnce sync.Once
-	file_app_dns_config_proto_rawDescData = file_app_dns_config_proto_rawDesc
+	file_app_dns_config_proto_rawDescData []byte
 )
 
 func file_app_dns_config_proto_rawDescGZIP() []byte {
 	file_app_dns_config_proto_rawDescOnce.Do(func() {
-		file_app_dns_config_proto_rawDescData = protoimpl.X.CompressGZIP(file_app_dns_config_proto_rawDescData)
+		file_app_dns_config_proto_rawDescData = protoimpl.X.CompressGZIP(unsafe.Slice(unsafe.StringData(file_app_dns_config_proto_rawDesc), len(file_app_dns_config_proto_rawDesc)))
 	})
 	return file_app_dns_config_proto_rawDescData
 }
 
-var file_app_dns_config_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
-var file_app_dns_config_proto_msgTypes = make([]protoimpl.MessageInfo, 6)
-var file_app_dns_config_proto_goTypes = []interface{}{
-	(DomainMatchingType)(0),           // 0: xray.app.dns.DomainMatchingType
-	(QueryStrategy)(0),                // 1: xray.app.dns.QueryStrategy
-	(*NameServer)(nil),                // 2: xray.app.dns.NameServer
-	(*Config)(nil),                    // 3: xray.app.dns.Config
-	(*NameServer_PriorityDomain)(nil), // 4: xray.app.dns.NameServer.PriorityDomain
-	(*NameServer_OriginalRule)(nil),   // 5: xray.app.dns.NameServer.OriginalRule
-	nil,                               // 6: xray.app.dns.Config.HostsEntry
-	(*Config_HostMapping)(nil),        // 7: xray.app.dns.Config.HostMapping
-	(*net.Endpoint)(nil),              // 8: xray.common.net.Endpoint
-	(*router.GeoIP)(nil),              // 9: xray.app.router.GeoIP
-	(*net.IPOrDomain)(nil),            // 10: xray.common.net.IPOrDomain
+var file_app_dns_config_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
+var file_app_dns_config_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
+var file_app_dns_config_proto_goTypes = []any{
+	(QueryStrategy)(0),         // 0: xray.app.dns.QueryStrategy
+	(*NameServer)(nil),         // 1: xray.app.dns.NameServer
+	(*Config)(nil),             // 2: xray.app.dns.Config
+	(*Config_HostMapping)(nil), // 3: xray.app.dns.Config.HostMapping
+	(*net.Endpoint)(nil),       // 4: xray.common.net.Endpoint
+	(*geodata.DomainRule)(nil), // 5: xray.common.geodata.DomainRule
+	(*geodata.IPRule)(nil),     // 6: xray.common.geodata.IPRule
 }
 var file_app_dns_config_proto_depIdxs = []int32{
-	8,  // 0: xray.app.dns.NameServer.address:type_name -> xray.common.net.Endpoint
-	4,  // 1: xray.app.dns.NameServer.prioritized_domain:type_name -> xray.app.dns.NameServer.PriorityDomain
-	9,  // 2: xray.app.dns.NameServer.geoip:type_name -> xray.app.router.GeoIP
-	5,  // 3: xray.app.dns.NameServer.original_rules:type_name -> xray.app.dns.NameServer.OriginalRule
-	1,  // 4: xray.app.dns.NameServer.query_strategy:type_name -> xray.app.dns.QueryStrategy
-	8,  // 5: xray.app.dns.Config.NameServers:type_name -> xray.common.net.Endpoint
-	2,  // 6: xray.app.dns.Config.name_server:type_name -> xray.app.dns.NameServer
-	6,  // 7: xray.app.dns.Config.Hosts:type_name -> xray.app.dns.Config.HostsEntry
-	7,  // 8: xray.app.dns.Config.static_hosts:type_name -> xray.app.dns.Config.HostMapping
-	1,  // 9: xray.app.dns.Config.query_strategy:type_name -> xray.app.dns.QueryStrategy
-	0,  // 10: xray.app.dns.NameServer.PriorityDomain.type:type_name -> xray.app.dns.DomainMatchingType
-	10, // 11: xray.app.dns.Config.HostsEntry.value:type_name -> xray.common.net.IPOrDomain
-	0,  // 12: xray.app.dns.Config.HostMapping.type:type_name -> xray.app.dns.DomainMatchingType
-	13, // [13:13] is the sub-list for method output_type
-	13, // [13:13] is the sub-list for method input_type
-	13, // [13:13] is the sub-list for extension type_name
-	13, // [13:13] is the sub-list for extension extendee
-	0,  // [0:13] is the sub-list for field type_name
+	4, // 0: xray.app.dns.NameServer.address:type_name -> xray.common.net.Endpoint
+	5, // 1: xray.app.dns.NameServer.domain:type_name -> xray.common.geodata.DomainRule
+	6, // 2: xray.app.dns.NameServer.expected_ip:type_name -> xray.common.geodata.IPRule
+	0, // 3: xray.app.dns.NameServer.query_strategy:type_name -> xray.app.dns.QueryStrategy
+	6, // 4: xray.app.dns.NameServer.unexpected_ip:type_name -> xray.common.geodata.IPRule
+	1, // 5: xray.app.dns.Config.name_server:type_name -> xray.app.dns.NameServer
+	3, // 6: xray.app.dns.Config.static_hosts:type_name -> xray.app.dns.Config.HostMapping
+	0, // 7: xray.app.dns.Config.query_strategy:type_name -> xray.app.dns.QueryStrategy
+	5, // 8: xray.app.dns.Config.HostMapping.domain:type_name -> xray.common.geodata.DomainRule
+	9, // [9:9] is the sub-list for method output_type
+	9, // [9:9] is the sub-list for method input_type
+	9, // [9:9] is the sub-list for extension type_name
+	9, // [9:9] is the sub-list for extension extendee
+	0, // [0:9] is the sub-list for field type_name
 }
 
 func init() { file_app_dns_config_proto_init() }
@@ -697,75 +538,14 @@ func file_app_dns_config_proto_init() {
 	if File_app_dns_config_proto != nil {
 		return
 	}
-	if !protoimpl.UnsafeEnabled {
-		file_app_dns_config_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*NameServer); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_dns_config_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Config); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_dns_config_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*NameServer_PriorityDomain); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_dns_config_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*NameServer_OriginalRule); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_dns_config_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Config_HostMapping); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-	}
+	file_app_dns_config_proto_msgTypes[0].OneofWrappers = []any{}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_app_dns_config_proto_rawDesc,
-			NumEnums:      2,
-			NumMessages:   6,
+			RawDescriptor: unsafe.Slice(unsafe.StringData(file_app_dns_config_proto_rawDesc), len(file_app_dns_config_proto_rawDesc)),
+			NumEnums:      1,
+			NumMessages:   3,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
@@ -775,7 +555,6 @@ func file_app_dns_config_proto_init() {
 		MessageInfos:      file_app_dns_config_proto_msgTypes,
 	}.Build()
 	File_app_dns_config_proto = out.File
-	file_app_dns_config_proto_rawDesc = nil
 	file_app_dns_config_proto_goTypes = nil
 	file_app_dns_config_proto_depIdxs = nil
 }

app/dns/config.proto

@@ -6,64 +6,47 @@ option go_package = "github.com/xtls/xray-core/app/dns";
 option java_package = "com.xray.app.dns";
 option java_multiple_files = true;
 
-import "common/net/address.proto";
 import "common/net/destination.proto";
-import "app/router/config.proto";
+import "common/geodata/geodat.proto";
 
 message NameServer {
   xray.common.net.Endpoint address = 1;
   bytes client_ip = 5;
   bool skipFallback = 6;
-
-  message PriorityDomain {
-    DomainMatchingType type = 1;
-    string domain = 2;
-  }
-
-  message OriginalRule {
-    string rule = 1;
-    uint32 size = 2;
-  }
-
-  repeated PriorityDomain prioritized_domain = 2;
-  repeated xray.app.router.GeoIP geoip = 3;
-  repeated OriginalRule original_rules = 4;
+  repeated xray.common.geodata.DomainRule domain = 2;
+  repeated xray.common.geodata.IPRule expected_ip = 3;
+  reserved 4;
   QueryStrategy query_strategy = 7;
-}
-
-enum DomainMatchingType {
-  Full = 0;
-  Subdomain = 1;
-  Keyword = 2;
-  Regex = 3;
+  bool actPrior = 8;
+  string tag = 9;
+  uint64 timeoutMs = 10;
+  optional bool disableCache = 11;
+  optional bool serveStale = 15;
+  optional uint32 serveExpiredTTL = 16;
+  bool finalQuery = 12;
+  repeated xray.common.geodata.IPRule unexpected_ip = 13;
+  bool actUnprior = 14;
+  uint32 policyID = 17;
 }
 
 enum QueryStrategy {
   USE_IP = 0;
   USE_IP4 = 1;
   USE_IP6 = 2;
+  USE_SYS = 3;
 }
 
 message Config {
-  // Nameservers used by this DNS. Only traditional UDP servers are support at
-  // the moment. A special value 'localhost' as a domain address can be set to
-  // use DNS on local system.
-  repeated xray.common.net.Endpoint NameServers = 1 [deprecated = true];
-
   // NameServer list used by this DNS client.
+  // A special value 'localhost' as a domain address can be set to use DNS on local system.
   repeated NameServer name_server = 5;
 
-  // Static hosts. Domain to IP.
-  // Deprecated. Use static_hosts.
-  map<string, xray.common.net.IPOrDomain> Hosts = 2 [deprecated = true];
-
   // Client IP for EDNS client subnet. Must be 4 bytes (IPv4) or 16 bytes
   // (IPv6).
   bytes client_ip = 3;
 
   message HostMapping {
-    DomainMatchingType type = 1;
-    string domain = 2;
+    xray.common.geodata.DomainRule domain = 2;
 
     repeated bytes ip = 3;
 
@@ -81,9 +64,13 @@ message Config {
 
   // DisableCache disables DNS cache
   bool disableCache = 8;
+  bool serveStale = 12;
+  uint32 serveExpiredTTL = 13;
 
   QueryStrategy query_strategy = 9;
 
   bool disableFallback = 10;
   bool disableFallbackIfMatch = 11;
+
+  bool enableParallelQuery = 14;
 }

app/dns/dns.go

@@ -1,54 +1,46 @@
 // Package dns is an implementation of core.DNS feature.
 package dns
 
-//go:generate go run github.com/xtls/xray-core/common/errors/errorgen
-
 import (
 	"context"
+	go_errors "errors"
 	"fmt"
+	"sort"
 	"strings"
 	"sync"
 
-	"github.com/xtls/xray-core/app/router"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/common/geodata"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/session"
-	"github.com/xtls/xray-core/common/strmatcher"
-	"github.com/xtls/xray-core/features"
+	"github.com/xtls/xray-core/common/utils"
 	"github.com/xtls/xray-core/features/dns"
 )
 
 // DNS is a DNS rely server.
 type DNS struct {
 	sync.Mutex
-	tag                    string
-	disableCache           bool
 	disableFallback        bool
 	disableFallbackIfMatch bool
+	enableParallelQuery    bool
 	ipOption               *dns.IPOption
 	hosts                  *StaticHosts
 	clients                []*Client
 	ctx                    context.Context
-	domainMatcher          strmatcher.IndexMatcher
+	domainMatcher          geodata.DomainMatcher
 	matcherInfos           []*DomainMatcherInfo
+	checkSystem            bool
 }
 
-// DomainMatcherInfo contains information attached to index returned by Server.domainMatcher
+// DomainMatcherInfo contains information attached to index returned by Server.domainMatcher.
 type DomainMatcherInfo struct {
-	clientIdx     uint16
-	domainRuleIdx uint16
+	clientIdx  uint16
+	domainRule string
 }
 
 // New creates a new DNS server with given configuration.
 func New(ctx context.Context, config *Config) (*DNS, error) {
-	var tag string
-	if len(config.Tag) > 0 {
-		tag = config.Tag
-	} else {
-		tag = generateRandomTag()
-	}
-
 	var clientIP net.IP
 	switch len(config.ClientIp) {
 	case 0, net.IPv4len, net.IPv6len:
@@ -57,62 +49,73 @@ func New(ctx context.Context, config *Config) (*DNS, error) {
 		return nil, errors.New("unexpected client IP length ", len(config.ClientIp))
 	}
 
-	var ipOption *dns.IPOption
+	var ipOption dns.IPOption
+	checkSystem := false
 	switch config.QueryStrategy {
 	case QueryStrategy_USE_IP:
-		ipOption = &dns.IPOption{
+		ipOption = dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
 		}
+	case QueryStrategy_USE_SYS:
+		ipOption = dns.IPOption{
+			IPv4Enable: true,
+			IPv6Enable: true,
+			FakeEnable: false,
+		}
+		checkSystem = true
 	case QueryStrategy_USE_IP4:
-		ipOption = &dns.IPOption{
+		ipOption = dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: false,
 			FakeEnable: false,
 		}
 	case QueryStrategy_USE_IP6:
-		ipOption = &dns.IPOption{
+		ipOption = dns.IPOption{
 			IPv4Enable: false,
 			IPv6Enable: true,
 			FakeEnable: false,
 		}
+	default:
+		return nil, errors.New("unexpected query strategy ", config.QueryStrategy)
 	}
 
-	hosts, err := NewStaticHosts(config.StaticHosts, config.Hosts)
+	hosts, err := NewStaticHosts(config.StaticHosts)
 	if err != nil {
 		return nil, errors.New("failed to create hosts").Base(err)
 	}
 
-	clients := []*Client{}
-	domainRuleCount := 0
-	for _, ns := range config.NameServer {
-		domainRuleCount += len(ns.PrioritizedDomain)
+	defaultTag := config.Tag
+	if len(config.Tag) == 0 {
+		defaultTag = generateRandomTag()
 	}
 
-	// MatcherInfos is ensured to cover the maximum index domainMatcher could return, where matcher's index starts from 1
-	matcherInfos := make([]*DomainMatcherInfo, domainRuleCount+1)
-	domainMatcher := &strmatcher.MatcherGroup{}
-	geoipContainer := router.GeoIPMatcherContainer{}
-
-	for _, endpoint := range config.NameServers {
-		features.PrintDeprecatedFeatureWarning("simple DNS server")
-		client, err := NewSimpleClient(ctx, endpoint, clientIP)
-		if err != nil {
-			return nil, errors.New("failed to create client").Base(err)
-		}
-		clients = append(clients, client)
-	}
+	clients := make([]*Client, 0, len(config.NameServer))
+	matcherInfos := make([]*DomainMatcherInfo, 0)
+	effectiveRules := make([]*geodata.DomainRule, 0)
 
 	for _, ns := range config.NameServer {
 		clientIdx := len(clients)
-		updateDomain := func(domainRule strmatcher.Matcher, originalRuleIdx int, matcherInfos []*DomainMatcherInfo) error {
-			midx := domainMatcher.Add(domainRule)
-			matcherInfos[midx] = &DomainMatcherInfo{
-				clientIdx:     uint16(clientIdx),
-				domainRuleIdx: uint16(originalRuleIdx),
+		updateRules := func(isLocalNameServer bool) {
+			// Prioritize local domains with specific TLDs or those without any dot for the local DNS
+			if isLocalNameServer {
+				effectiveRules = append(effectiveRules, localTLDsAndDotlessDomainsRules...)
+				for _, rule := range localTLDsAndDotlessDomainsRules {
+					matcherInfos = append(matcherInfos, &DomainMatcherInfo{
+						clientIdx:  uint16(clientIdx),
+						domainRule: rule.String(),
+					})
+				}
+			}
+
+			effectiveRules = append(effectiveRules, ns.Domain...)
+			for _, rule := range ns.Domain {
+				matcherInfos = append(matcherInfos, &DomainMatcherInfo{
+					clientIdx:  uint16(clientIdx),
+					domainRule: rule.String(),
+				})
 			}
-			return nil
 		}
 
 		myClientIP := clientIP
@@ -120,29 +123,63 @@ func New(ctx context.Context, config *Config) (*DNS, error) {
 		case net.IPv4len, net.IPv6len:
 			myClientIP = net.IP(ns.ClientIp)
 		}
-		client, err := NewClient(ctx, ns, myClientIP, geoipContainer, &matcherInfos, updateDomain)
+
+		disableCache := config.DisableCache
+		if ns.DisableCache != nil {
+			disableCache = *ns.DisableCache
+		}
+
+		serveStale := config.ServeStale
+		if ns.ServeStale != nil {
+			serveStale = *ns.ServeStale
+		}
+
+		serveExpiredTTL := config.ServeExpiredTTL
+		if ns.ServeExpiredTTL != nil {
+			serveExpiredTTL = *ns.ServeExpiredTTL
+		}
+
+		tag := defaultTag
+		if len(ns.Tag) > 0 {
+			tag = ns.Tag
+		}
+
+		clientIPOption := ResolveIpOptionOverride(ns.QueryStrategy, ipOption)
+		if !clientIPOption.IPv4Enable && !clientIPOption.IPv6Enable {
+			return nil, errors.New("no QueryStrategy available for ", ns.Address)
+		}
+
+		client, err := NewClient(ctx, ns, myClientIP, disableCache, serveStale, serveExpiredTTL, tag, clientIPOption, updateRules)
 		if err != nil {
 			return nil, errors.New("failed to create client").Base(err)
 		}
 		clients = append(clients, client)
 	}
 
+	var domainMatcher geodata.DomainMatcher
+	if len(effectiveRules) > 0 {
+		domainMatcher, err = geodata.DomainReg.BuildDomainMatcher(effectiveRules)
+		if err != nil {
+			return nil, err
+		}
+	}
+
 	// If there is no DNS client in config, add a `localhost` DNS client
 	if len(clients) == 0 {
-		clients = append(clients, NewLocalDNSClient())
+		clients = append(clients, NewLocalDNSClient(ipOption))
 	}
 
 	return &DNS{
-		tag:                    tag,
 		hosts:                  hosts,
-		ipOption:               ipOption,
+		ipOption:               &ipOption,
 		clients:                clients,
 		ctx:                    ctx,
 		domainMatcher:          domainMatcher,
 		matcherInfos:           matcherInfos,
-		disableCache:           config.DisableCache,
 		disableFallback:        config.DisableFallback,
 		disableFallbackIfMatch: config.DisableFallbackIfMatch,
+		enableParallelQuery:    config.EnableParallelQuery,
+		checkSystem:            checkSystem,
 	}, nil
 }
 
@@ -164,94 +201,67 @@ func (s *DNS) Close() error {
 // IsOwnLink implements proxy.dns.ownLinkVerifier
 func (s *DNS) IsOwnLink(ctx context.Context) bool {
 	inbound := session.InboundFromContext(ctx)
-	return inbound != nil && inbound.Tag == s.tag
+	if inbound == nil {
+		return false
+	}
+	for _, client := range s.clients {
+		if client.tag == inbound.Tag {
+			return true
+		}
+	}
+	return false
 }
 
 // LookupIP implements dns.Client.
-func (s *DNS) LookupIP(domain string, option dns.IPOption) ([]net.IP, error) {
-	if domain == "" {
-		return nil, errors.New("empty domain name")
-	}
-
-	option.IPv4Enable = option.IPv4Enable && s.ipOption.IPv4Enable
-	option.IPv6Enable = option.IPv6Enable && s.ipOption.IPv6Enable
-
-	if !option.IPv4Enable && !option.IPv6Enable {
-		return nil, dns.ErrEmptyResponse
-	}
-
+func (s *DNS) LookupIP(domain string, option dns.IPOption) ([]net.IP, uint32, error) {
 	// Normalize the FQDN form query
 	domain = strings.TrimSuffix(domain, ".")
+	if domain == "" {
+		return nil, 0, errors.New("empty domain name")
+	}
+
+	if s.checkSystem {
+		supportIPv4, supportIPv6 := utils.CheckRoutes()
+		option.IPv4Enable = option.IPv4Enable && supportIPv4
+		option.IPv6Enable = option.IPv6Enable && supportIPv6
+	} else {
+		option.IPv4Enable = option.IPv4Enable && s.ipOption.IPv4Enable
+		option.IPv6Enable = option.IPv6Enable && s.ipOption.IPv6Enable
+	}
+
+	if !option.IPv4Enable && !option.IPv6Enable {
+		return nil, 0, dns.ErrEmptyResponse
+	}
 
 	// Static host lookup
-	switch addrs := s.hosts.Lookup(domain, option); {
+	switch addrs, err := s.hosts.Lookup(domain, option); {
+	case err != nil:
+		if go_errors.Is(err, dns.ErrEmptyResponse) {
+			return nil, 0, dns.ErrEmptyResponse
+		}
+		return nil, 0, errors.New("returning nil for domain ", domain).Base(err)
 	case addrs == nil: // Domain not recorded in static host
 		break
 	case len(addrs) == 0: // Domain recorded, but no valid IP returned (e.g. IPv4 address with only IPv6 enabled)
-		return nil, dns.ErrEmptyResponse
+		return nil, 0, dns.ErrEmptyResponse
 	case len(addrs) == 1 && addrs[0].Family().IsDomain(): // Domain replacement
 		errors.LogInfo(s.ctx, "domain replaced: ", domain, " -> ", addrs[0].Domain())
 		domain = addrs[0].Domain()
 	default: // Successfully found ip records in static host
 		errors.LogInfo(s.ctx, "returning ", len(addrs), " IP(s) for domain ", domain, " -> ", addrs)
-		return toNetIP(addrs)
+		ips, err := toNetIP(addrs)
+		if err != nil {
+			return nil, 0, err
+		}
+		return ips, 10, nil // Hosts ttl is 10
 	}
 
 	// Name servers lookup
-	errs := []error{}
-	ctx := session.ContextWithInbound(s.ctx, &session.Inbound{Tag: s.tag})
-	for _, client := range s.sortClients(domain) {
-		if !option.FakeEnable && strings.EqualFold(client.Name(), "FakeDNS") {
-			errors.LogDebug(s.ctx, "skip DNS resolution for domain ", domain, " at server ", client.Name())
-			continue
-		}
-		ips, err := client.QueryIP(ctx, domain, option, s.disableCache)
-		if len(ips) > 0 {
-			return ips, nil
-		}
-		if err != nil {
-			errors.LogInfoInner(s.ctx, err, "failed to lookup ip for domain ", domain, " at server ", client.Name())
-			errs = append(errs, err)
-		}
-		// 5 for RcodeRefused in miekg/dns, hardcode to reduce binary size
-		if err != context.Canceled && err != context.DeadlineExceeded && err != errExpectedIPNonMatch && err != dns.ErrEmptyResponse && dns.RCodeFromError(err) != 5 {
-			return nil, err
-		}
+	if s.enableParallelQuery {
+		return s.parallelQuery(domain, option)
+	} else {
+		return s.serialQuery(domain, option)
 	}
-
-	return nil, errors.New("returning nil for domain ", domain).Base(errors.Combine(errs...))
-}
-
-// LookupHosts implements dns.HostsLookup.
-func (s *DNS) LookupHosts(domain string) *net.Address {
-	domain = strings.TrimSuffix(domain, ".")
-	if domain == "" {
-		return nil
-	}
-	// Normalize the FQDN form query
-	addrs := s.hosts.Lookup(domain, *s.ipOption)
-	if len(addrs) > 0 {
-		errors.LogInfo(s.ctx, "domain replaced: ", domain, " -> ", addrs[0].String())
-		return &addrs[0]
-	}
-
-	return nil
-}
-
-// GetIPOption implements ClientWithIPOption.
-func (s *DNS) GetIPOption() *dns.IPOption {
-	return s.ipOption
-}
-
-// SetQueryOption implements ClientWithIPOption.
-func (s *DNS) SetQueryOption(isIPv4Enable, isIPv6Enable bool) {
-	s.ipOption.IPv4Enable = isIPv4Enable
-	s.ipOption.IPv6Enable = isIPv6Enable
-}
-
-// SetFakeDNSOption implements ClientWithIPOption.
-func (s *DNS) SetFakeDNSOption(isFakeEnable bool) {
-	s.ipOption.FakeEnable = isFakeEnable
 }
 
 func (s *DNS) sortClients(domain string) []*Client {
@@ -262,18 +272,28 @@ func (s *DNS) sortClients(domain string) []*Client {
 
 	// Priority domain matching
 	hasMatch := false
-	for _, match := range s.domainMatcher.Match(domain) {
-		info := s.matcherInfos[match]
-		client := s.clients[info.clientIdx]
-		domainRule := client.domains[info.domainRuleIdx]
-		domainRules = append(domainRules, fmt.Sprintf("%s(DNS idx:%d)", domainRule, info.clientIdx))
-		if clientUsed[info.clientIdx] {
-			continue
+	if s.domainMatcher != nil {
+		matchSlice := s.domainMatcher.Match(strings.ToLower(domain))
+		sort.Slice(matchSlice, func(i, j int) bool {
+			return matchSlice[i] < matchSlice[j]
+		})
+		for _, match := range matchSlice {
+			info := s.matcherInfos[match]
+			client := s.clients[info.clientIdx]
+			domainRule := info.domainRule
+			domainRules = append(domainRules, fmt.Sprintf("%s(DNS idx:%d)", domainRule, info.clientIdx))
+			if clientUsed[info.clientIdx] {
+				continue
+			}
+			clientUsed[info.clientIdx] = true
+			clients = append(clients, client)
+			clientNames = append(clientNames, client.Name())
+			hasMatch = true
+			if client.finalQuery {
+				logDecision(s.ctx, domain, domainRules, clientNames)
+				return clients
+			}
 		}
-		clientUsed[info.clientIdx] = true
-		clients = append(clients, client)
-		clientNames = append(clientNames, client.Name())
-		hasMatch = true
 	}
 
 	if !(s.disableFallback || s.disableFallbackIfMatch && hasMatch) {
@@ -285,25 +305,233 @@ func (s *DNS) sortClients(domain string) []*Client {
 			clientUsed[idx] = true
 			clients = append(clients, client)
 			clientNames = append(clientNames, client.Name())
+			if client.finalQuery {
+				logDecision(s.ctx, domain, domainRules, clientNames)
+				return clients
+			}
 		}
 	}
 
-	if len(domainRules) > 0 {
-		errors.LogDebug(s.ctx, "domain ", domain, " matches following rules: ", domainRules)
-	}
-	if len(clientNames) > 0 {
-		errors.LogDebug(s.ctx, "domain ", domain, " will use DNS in order: ", clientNames)
-	}
+	logDecision(s.ctx, domain, domainRules, clientNames)
 
 	if len(clients) == 0 {
-		clients = append(clients, s.clients[0])
-		clientNames = append(clientNames, s.clients[0].Name())
-		errors.LogDebug(s.ctx, "domain ", domain, " will use the first DNS: ", clientNames)
+		if len(s.clients) > 0 {
+			clients = append(clients, s.clients[0])
+			clientNames = append(clientNames, s.clients[0].Name())
+			errors.LogWarning(s.ctx, "domain ", domain, " will use the first DNS: ", clientNames)
+		} else {
+			errors.LogError(s.ctx, "no DNS clients available for domain ", domain, " and no default clients configured")
+		}
 	}
 
 	return clients
 }
 
+func logDecision(ctx context.Context, domain string, domainRules []string, clientNames []string) {
+	if len(domainRules) > 0 {
+		errors.LogDebug(ctx, "domain ", domain, " matches following rules: ", domainRules)
+	}
+	if len(clientNames) > 0 {
+		errors.LogDebug(ctx, "domain ", domain, " will use DNS in order: ", clientNames)
+	}
+}
+
+func mergeQueryErrors(domain string, errs []error) error {
+	if len(errs) == 0 {
+		return dns.ErrEmptyResponse
+	}
+
+	var noRNF error
+	for _, err := range errs {
+		if go_errors.Is(err, errRecordNotFound) {
+			continue // server no response, ignore
+		} else if noRNF == nil {
+			noRNF = err
+		} else if !go_errors.Is(err, noRNF) {
+			return errors.New("returning nil for domain ", domain).Base(errors.Combine(errs...))
+		}
+	}
+	if go_errors.Is(noRNF, dns.ErrEmptyResponse) {
+		return dns.ErrEmptyResponse
+	}
+	if noRNF == nil {
+		noRNF = errRecordNotFound
+	}
+	return errors.New("returning nil for domain ", domain).Base(noRNF)
+}
+
+func (s *DNS) serialQuery(domain string, option dns.IPOption) ([]net.IP, uint32, error) {
+	var errs []error
+	for _, client := range s.sortClients(domain) {
+		if !option.FakeEnable && strings.EqualFold(client.Name(), "FakeDNS") {
+			errors.LogDebug(s.ctx, "skip DNS resolution for domain ", domain, " at server ", client.Name())
+			continue
+		}
+
+		ips, ttl, err := client.QueryIP(s.ctx, domain, option)
+
+		if len(ips) > 0 {
+			return ips, ttl, nil
+		}
+
+		errors.LogInfoInner(s.ctx, err, "failed to lookup ip for domain ", domain, " at server ", client.Name(), " in serial query mode")
+		if err == nil {
+			err = dns.ErrEmptyResponse
+		}
+		errs = append(errs, err)
+	}
+	return nil, 0, mergeQueryErrors(domain, errs)
+}
+
+func (s *DNS) parallelQuery(domain string, option dns.IPOption) ([]net.IP, uint32, error) {
+	var errs []error
+	clients := s.sortClients(domain)
+
+	resultsChan := asyncQueryAll(domain, option, clients, s.ctx)
+
+	groups, groupOf := makeGroups( /*s.ctx,*/ clients)
+	results := make([]*queryResult, len(clients))
+	pending := make([]int, len(groups))
+	for gi, g := range groups {
+		pending[gi] = g.end - g.start + 1
+	}
+
+	nextGroup := 0
+	for range clients {
+		result := <-resultsChan
+		results[result.index] = &result
+
+		gi := groupOf[result.index]
+		pending[gi]--
+
+		for nextGroup < len(groups) {
+			g := groups[nextGroup]
+
+			// group race, minimum rtt -> return
+			for j := g.start; j <= g.end; j++ {
+				r := results[j]
+				if r != nil && r.err == nil && len(r.ips) > 0 {
+					return r.ips, r.ttl, nil
+				}
+			}
+
+			// current group is incomplete and no one success -> continue pending
+			if pending[nextGroup] > 0 {
+				break
+			}
+
+			// all failed -> log and continue next group
+			for j := g.start; j <= g.end; j++ {
+				r := results[j]
+				e := r.err
+				if e == nil {
+					e = dns.ErrEmptyResponse
+				}
+				errors.LogInfoInner(s.ctx, e, "failed to lookup ip for domain ", domain, " at server ", clients[j].Name(), " in parallel query mode")
+				errs = append(errs, e)
+			}
+			nextGroup++
+		}
+	}
+
+	return nil, 0, mergeQueryErrors(domain, errs)
+}
+
+type queryResult struct {
+	ips   []net.IP
+	ttl   uint32
+	err   error
+	index int
+}
+
+func asyncQueryAll(domain string, option dns.IPOption, clients []*Client, ctx context.Context) chan queryResult {
+	if len(clients) == 0 {
+		ch := make(chan queryResult)
+		close(ch)
+		return ch
+	}
+
+	ch := make(chan queryResult, len(clients))
+	for i, client := range clients {
+		if !option.FakeEnable && strings.EqualFold(client.Name(), "FakeDNS") {
+			errors.LogDebug(ctx, "skip DNS resolution for domain ", domain, " at server ", client.Name())
+			ch <- queryResult{err: dns.ErrEmptyResponse, index: i}
+			continue
+		}
+
+		go func(i int, c *Client) {
+			qctx := ctx
+			if !c.server.IsDisableCache() {
+				nctx, cancel := context.WithTimeout(context.WithoutCancel(ctx), c.timeoutMs*2)
+				qctx = nctx
+				defer cancel()
+			}
+			ips, ttl, err := c.QueryIP(qctx, domain, option)
+			ch <- queryResult{ips: ips, ttl: ttl, err: err, index: i}
+		}(i, client)
+	}
+	return ch
+}
+
+type group struct{ start, end int }
+
+// merge only adjacent and rule-equivalent Client into a single group
+func makeGroups( /*ctx context.Context,*/ clients []*Client) ([]group, []int) {
+	n := len(clients)
+	if n == 0 {
+		return nil, nil
+	}
+	groups := make([]group, 0, n)
+	groupOf := make([]int, n)
+
+	s, e := 0, 0
+	for i := 1; i < n; i++ {
+		if clients[i-1].policyID == clients[i].policyID {
+			e = i
+		} else {
+			for k := s; k <= e; k++ {
+				groupOf[k] = len(groups)
+			}
+			groups = append(groups, group{start: s, end: e})
+			s, e = i, i
+		}
+	}
+	for k := s; k <= e; k++ {
+		groupOf[k] = len(groups)
+	}
+	groups = append(groups, group{start: s, end: e})
+
+	// var b strings.Builder
+	// b.WriteString("dns grouping: total clients=")
+	// b.WriteString(strconv.Itoa(n))
+	// b.WriteString(", groups=")
+	// b.WriteString(strconv.Itoa(len(groups)))
+
+	// for gi, g := range groups {
+	// 	b.WriteString("\n  [")
+	// 	b.WriteString(strconv.Itoa(g.start))
+	// 	b.WriteString("..")
+	// 	b.WriteString(strconv.Itoa(g.end))
+	// 	b.WriteString("] gid=")
+	// 	b.WriteString(strconv.Itoa(gi))
+	// 	b.WriteString(" pid=")
+	// 	b.WriteString(strconv.FormatUint(uint64(clients[g.start].policyID), 10))
+	// 	b.WriteString(" members: ")
+
+	// 	for i := g.start; i <= g.end; i++ {
+	// 		if i > g.start {
+	// 			b.WriteString(", ")
+	// 		}
+	// 		b.WriteString(strconv.Itoa(i))
+	// 		b.WriteByte(':')
+	// 		b.WriteString(clients[i].Name())
+	// 	}
+	// }
+	// errors.LogDebug(ctx, b.String())
+
+	return groups, groupOf
+}
+
 func init() {
 	common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
 		return New(ctx, config.(*Config))

app/dns/dns_test.go

@@ -11,9 +11,9 @@ import (
 	"github.com/xtls/xray-core/app/policy"
 	"github.com/xtls/xray-core/app/proxyman"
 	_ "github.com/xtls/xray-core/app/proxyman/outbound"
-	"github.com/xtls/xray-core/app/router"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/common/geodata"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/core"
@@ -76,6 +76,9 @@ func (*staticHandler) ServeDNS(w dns.ResponseWriter, r *dns.Msg) {
 		case q.Name == "notexist.google.com." && q.Qtype == dns.TypeAAAA:
 			ans.MsgHdr.Rcode = dns.RcodeNameError
 
+		case q.Name == "notexist.google.com." && q.Qtype == dns.TypeA:
+			ans.MsgHdr.Rcode = dns.RcodeNameError
+
 		case q.Name == "hostname." && q.Qtype == dns.TypeA:
 			rr, _ := dns.NewRR("hostname. IN A 127.0.0.1")
 			ans.Answer = append(ans.Answer, rr)
@@ -117,22 +120,23 @@ func TestUDPServerSubnet(t *testing.T) {
 		Handler: &staticHandler{},
 		UDPSize: 1200,
 	}
-
 	go dnsServer.ListenAndServe()
 	time.Sleep(time.Second)
 
 	config := &core.Config{
 		App: []*serial.TypedMessage{
 			serial.ToTypedMessage(&Config{
-				NameServers: []*net.Endpoint{
+				NameServer: []*NameServer{
 					{
-						Network: net.Network_UDP,
-						Address: &net.IPOrDomain{
-							Address: &net.IPOrDomain_Ip{
-								Ip: []byte{127, 0, 0, 1},
+						Address: &net.Endpoint{
+							Network: net.Network_UDP,
+							Address: &net.IPOrDomain{
+								Address: &net.IPOrDomain_Ip{
+									Ip: []byte{127, 0, 0, 1},
+								},
 							},
+							Port: uint32(port),
 						},
-						Port: uint32(port),
 					},
 				},
 				ClientIp: []byte{7, 8, 9, 10},
@@ -143,7 +147,9 @@ func TestUDPServerSubnet(t *testing.T) {
 		},
 		Outbound: []*core.OutboundHandlerConfig{
 			{
-				ProxySettings: serial.ToTypedMessage(&freedom.Config{}),
+				ProxySettings: serial.ToTypedMessage(&freedom.Config{
+					FinalRules: []*freedom.FinalRuleConfig{{Action: freedom.RuleAction_Allow}},
+				}),
 			},
 		},
 	}
@@ -153,7 +159,7 @@ func TestUDPServerSubnet(t *testing.T) {
 
 	client := v.GetFeature(feature_dns.ClientType()).(feature_dns.Client)
 
-	ips, err := client.LookupIP("google.com", feature_dns.IPOption{
+	ips, _, err := client.LookupIP("google.com", feature_dns.IPOption{
 		IPv4Enable: true,
 		IPv6Enable: true,
 		FakeEnable: false,
@@ -183,15 +189,17 @@ func TestUDPServer(t *testing.T) {
 	config := &core.Config{
 		App: []*serial.TypedMessage{
 			serial.ToTypedMessage(&Config{
-				NameServers: []*net.Endpoint{
+				NameServer: []*NameServer{
 					{
-						Network: net.Network_UDP,
-						Address: &net.IPOrDomain{
-							Address: &net.IPOrDomain_Ip{
-								Ip: []byte{127, 0, 0, 1},
+						Address: &net.Endpoint{
+							Network: net.Network_UDP,
+							Address: &net.IPOrDomain{
+								Address: &net.IPOrDomain_Ip{
+									Ip: []byte{127, 0, 0, 1},
+								},
 							},
+							Port: uint32(port),
 						},
-						Port: uint32(port),
 					},
 				},
 			}),
@@ -201,7 +209,9 @@ func TestUDPServer(t *testing.T) {
 		},
 		Outbound: []*core.OutboundHandlerConfig{
 			{
-				ProxySettings: serial.ToTypedMessage(&freedom.Config{}),
+				ProxySettings: serial.ToTypedMessage(&freedom.Config{
+					FinalRules: []*freedom.FinalRuleConfig{{Action: freedom.RuleAction_Allow}},
+				}),
 			},
 		},
 	}
@@ -212,7 +222,7 @@ func TestUDPServer(t *testing.T) {
 	client := v.GetFeature(feature_dns.ClientType()).(feature_dns.Client)
 
 	{
-		ips, err := client.LookupIP("google.com", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("google.com", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -227,7 +237,7 @@ func TestUDPServer(t *testing.T) {
 	}
 
 	{
-		ips, err := client.LookupIP("facebook.com", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("facebook.com", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -242,7 +252,7 @@ func TestUDPServer(t *testing.T) {
 	}
 
 	{
-		_, err := client.LookupIP("notexist.google.com", feature_dns.IPOption{
+		_, _, err := client.LookupIP("notexist.google.com", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -256,7 +266,7 @@ func TestUDPServer(t *testing.T) {
 	}
 
 	{
-		ips, err := client.LookupIP("ipv4only.google.com", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("ipv4only.google.com", feature_dns.IPOption{
 			IPv4Enable: false,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -272,7 +282,7 @@ func TestUDPServer(t *testing.T) {
 	dnsServer.Shutdown()
 
 	{
-		ips, err := client.LookupIP("google.com", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("google.com", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -303,18 +313,18 @@ func TestPrioritizedDomain(t *testing.T) {
 	config := &core.Config{
 		App: []*serial.TypedMessage{
 			serial.ToTypedMessage(&Config{
-				NameServers: []*net.Endpoint{
-					{
-						Network: net.Network_UDP,
-						Address: &net.IPOrDomain{
-							Address: &net.IPOrDomain_Ip{
-								Ip: []byte{127, 0, 0, 1},
-							},
-						},
-						Port: 9999, /* unreachable */
-					},
-				},
 				NameServer: []*NameServer{
+					{
+						Address: &net.Endpoint{
+							Network: net.Network_UDP,
+							Address: &net.IPOrDomain{
+								Address: &net.IPOrDomain_Ip{
+									Ip: []byte{127, 0, 0, 1},
+								},
+							},
+							Port: 9999, /* unreachable */
+						},
+					},
 					{
 						Address: &net.Endpoint{
 							Network: net.Network_UDP,
@@ -325,10 +335,9 @@ func TestPrioritizedDomain(t *testing.T) {
 							},
 							Port: uint32(port),
 						},
-						PrioritizedDomain: []*NameServer_PriorityDomain{
+						Domain: []*geodata.DomainRule{
 							{
-								Type:   DomainMatchingType_Full,
-								Domain: "google.com",
+								Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Full, Value: "google.com"}},
 							},
 						},
 					},
@@ -340,7 +349,9 @@ func TestPrioritizedDomain(t *testing.T) {
 		},
 		Outbound: []*core.OutboundHandlerConfig{
 			{
-				ProxySettings: serial.ToTypedMessage(&freedom.Config{}),
+				ProxySettings: serial.ToTypedMessage(&freedom.Config{
+					FinalRules: []*freedom.FinalRuleConfig{{Action: freedom.RuleAction_Allow}},
+				}),
 			},
 		},
 	}
@@ -353,7 +364,7 @@ func TestPrioritizedDomain(t *testing.T) {
 	startTime := time.Now()
 
 	{
-		ips, err := client.LookupIP("google.com", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("google.com", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -389,15 +400,17 @@ func TestUDPServerIPv6(t *testing.T) {
 	config := &core.Config{
 		App: []*serial.TypedMessage{
 			serial.ToTypedMessage(&Config{
-				NameServers: []*net.Endpoint{
+				NameServer: []*NameServer{
 					{
-						Network: net.Network_UDP,
-						Address: &net.IPOrDomain{
-							Address: &net.IPOrDomain_Ip{
-								Ip: []byte{127, 0, 0, 1},
+						Address: &net.Endpoint{
+							Network: net.Network_UDP,
+							Address: &net.IPOrDomain{
+								Address: &net.IPOrDomain_Ip{
+									Ip: []byte{127, 0, 0, 1},
+								},
 							},
+							Port: uint32(port),
 						},
-						Port: uint32(port),
 					},
 				},
 			}),
@@ -407,7 +420,9 @@ func TestUDPServerIPv6(t *testing.T) {
 		},
 		Outbound: []*core.OutboundHandlerConfig{
 			{
-				ProxySettings: serial.ToTypedMessage(&freedom.Config{}),
+				ProxySettings: serial.ToTypedMessage(&freedom.Config{
+					FinalRules: []*freedom.FinalRuleConfig{{Action: freedom.RuleAction_Allow}},
+				}),
 			},
 		},
 	}
@@ -417,7 +432,7 @@ func TestUDPServerIPv6(t *testing.T) {
 
 	client := v.GetFeature(feature_dns.ClientType()).(feature_dns.Client)
 	{
-		ips, err := client.LookupIP("ipv6.google.com", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("ipv6.google.com", feature_dns.IPOption{
 			IPv4Enable: false,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -448,21 +463,22 @@ func TestStaticHostDomain(t *testing.T) {
 	config := &core.Config{
 		App: []*serial.TypedMessage{
 			serial.ToTypedMessage(&Config{
-				NameServers: []*net.Endpoint{
+				NameServer: []*NameServer{
 					{
-						Network: net.Network_UDP,
-						Address: &net.IPOrDomain{
-							Address: &net.IPOrDomain_Ip{
-								Ip: []byte{127, 0, 0, 1},
+						Address: &net.Endpoint{
+							Network: net.Network_UDP,
+							Address: &net.IPOrDomain{
+								Address: &net.IPOrDomain_Ip{
+									Ip: []byte{127, 0, 0, 1},
+								},
 							},
+							Port: uint32(port),
 						},
-						Port: uint32(port),
 					},
 				},
 				StaticHosts: []*Config_HostMapping{
 					{
-						Type:          DomainMatchingType_Full,
-						Domain:        "example.com",
+						Domain:        &geodata.DomainRule{Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Full, Value: "example.com"}}},
 						ProxiedDomain: "google.com",
 					},
 				},
@@ -473,7 +489,9 @@ func TestStaticHostDomain(t *testing.T) {
 		},
 		Outbound: []*core.OutboundHandlerConfig{
 			{
-				ProxySettings: serial.ToTypedMessage(&freedom.Config{}),
+				ProxySettings: serial.ToTypedMessage(&freedom.Config{
+					FinalRules: []*freedom.FinalRuleConfig{{Action: freedom.RuleAction_Allow}},
+				}),
 			},
 		},
 	}
@@ -484,7 +502,7 @@ func TestStaticHostDomain(t *testing.T) {
 	client := v.GetFeature(feature_dns.ClientType()).(feature_dns.Client)
 
 	{
-		ips, err := client.LookupIP("example.com", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("example.com", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -529,17 +547,9 @@ func TestIPMatch(t *testing.T) {
 							},
 							Port: uint32(port),
 						},
-						Geoip: []*router.GeoIP{
-							{
-								CountryCode: "local",
-								Cidr: []*router.CIDR{
-									{
-										// inner ip, will not match
-										Ip:     []byte{192, 168, 11, 1},
-										Prefix: 32,
-									},
-								},
-							},
+						ExpectedIp: []*geodata.IPRule{
+							// inner ip, will not match
+							{Value: &geodata.IPRule_Custom{Custom: &geodata.CIDRRule{Cidr: &geodata.CIDR{Ip: []byte{192, 168, 11, 1}, Prefix: 32}}}},
 						},
 					},
 					// second dns, match ip
@@ -553,25 +563,9 @@ func TestIPMatch(t *testing.T) {
 							},
 							Port: uint32(port),
 						},
-						Geoip: []*router.GeoIP{
-							{
-								CountryCode: "test",
-								Cidr: []*router.CIDR{
-									{
-										Ip:     []byte{8, 8, 8, 8},
-										Prefix: 32,
-									},
-								},
-							},
-							{
-								CountryCode: "test",
-								Cidr: []*router.CIDR{
-									{
-										Ip:     []byte{8, 8, 8, 4},
-										Prefix: 32,
-									},
-								},
-							},
+						ExpectedIp: []*geodata.IPRule{
+							{Value: &geodata.IPRule_Custom{Custom: &geodata.CIDRRule{Cidr: &geodata.CIDR{Ip: []byte{8, 8, 8, 8}, Prefix: 32}}}},
+							{Value: &geodata.IPRule_Custom{Custom: &geodata.CIDRRule{Cidr: &geodata.CIDR{Ip: []byte{8, 8, 8, 4}, Prefix: 32}}}},
 						},
 					},
 				},
@@ -582,7 +576,9 @@ func TestIPMatch(t *testing.T) {
 		},
 		Outbound: []*core.OutboundHandlerConfig{
 			{
-				ProxySettings: serial.ToTypedMessage(&freedom.Config{}),
+				ProxySettings: serial.ToTypedMessage(&freedom.Config{
+					FinalRules: []*freedom.FinalRuleConfig{{Action: freedom.RuleAction_Allow}},
+				}),
 			},
 		},
 	}
@@ -595,7 +591,7 @@ func TestIPMatch(t *testing.T) {
 	startTime := time.Now()
 
 	{
-		ips, err := client.LookupIP("google.com", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("google.com", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -631,17 +627,6 @@ func TestLocalDomain(t *testing.T) {
 	config := &core.Config{
 		App: []*serial.TypedMessage{
 			serial.ToTypedMessage(&Config{
-				NameServers: []*net.Endpoint{
-					{
-						Network: net.Network_UDP,
-						Address: &net.IPOrDomain{
-							Address: &net.IPOrDomain_Ip{
-								Ip: []byte{127, 0, 0, 1},
-							},
-						},
-						Port: 9999, /* unreachable */
-					},
-				},
 				NameServer: []*NameServer{
 					{
 						Address: &net.Endpoint{
@@ -651,21 +636,7 @@ func TestLocalDomain(t *testing.T) {
 									Ip: []byte{127, 0, 0, 1},
 								},
 							},
-							Port: uint32(port),
-						},
-						PrioritizedDomain: []*NameServer_PriorityDomain{
-							// Equivalent of dotless:localhost
-							{Type: DomainMatchingType_Regex, Domain: "^[^.]*localhost[^.]*$"},
-						},
-						Geoip: []*router.GeoIP{
-							{ // Will match localhost, localhost-a and localhost-b,
-								CountryCode: "local",
-								Cidr: []*router.CIDR{
-									{Ip: []byte{127, 0, 0, 2}, Prefix: 32},
-									{Ip: []byte{127, 0, 0, 3}, Prefix: 32},
-									{Ip: []byte{127, 0, 0, 4}, Prefix: 32},
-								},
-							},
+							Port: 9999, /* unreachable */
 						},
 					},
 					{
@@ -678,23 +649,42 @@ func TestLocalDomain(t *testing.T) {
 							},
 							Port: uint32(port),
 						},
-						PrioritizedDomain: []*NameServer_PriorityDomain{
+						Domain: []*geodata.DomainRule{
+							// Equivalent of dotless:localhost
+							{Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Regex, Value: "^[^.]*localhost[^.]*$"}}},
+						},
+						ExpectedIp: []*geodata.IPRule{
+							// Will match localhost, localhost-a and localhost-b,
+							{Value: &geodata.IPRule_Custom{Custom: &geodata.CIDRRule{Cidr: &geodata.CIDR{Ip: []byte{127, 0, 0, 2}, Prefix: 32}}}},
+							{Value: &geodata.IPRule_Custom{Custom: &geodata.CIDRRule{Cidr: &geodata.CIDR{Ip: []byte{127, 0, 0, 3}, Prefix: 32}}}},
+							{Value: &geodata.IPRule_Custom{Custom: &geodata.CIDRRule{Cidr: &geodata.CIDR{Ip: []byte{127, 0, 0, 4}, Prefix: 32}}}},
+						},
+					},
+					{
+						Address: &net.Endpoint{
+							Network: net.Network_UDP,
+							Address: &net.IPOrDomain{
+								Address: &net.IPOrDomain_Ip{
+									Ip: []byte{127, 0, 0, 1},
+								},
+							},
+							Port: uint32(port),
+						},
+						Domain: []*geodata.DomainRule{
 							// Equivalent of dotless: and domain:local
-							{Type: DomainMatchingType_Regex, Domain: "^[^.]*$"},
-							{Type: DomainMatchingType_Subdomain, Domain: "local"},
-							{Type: DomainMatchingType_Subdomain, Domain: "localdomain"},
+							{Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Regex, Value: "^[^.]*$"}}},
+							{Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Domain, Value: "local"}}},
+							{Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Domain, Value: "localdomain"}}},
 						},
 					},
 				},
 				StaticHosts: []*Config_HostMapping{
 					{
-						Type:   DomainMatchingType_Full,
-						Domain: "hostnamestatic",
+						Domain: &geodata.DomainRule{Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Full, Value: "hostnamestatic"}}},
 						Ip:     [][]byte{{127, 0, 0, 53}},
 					},
 					{
-						Type:          DomainMatchingType_Full,
-						Domain:        "hostnamealias",
+						Domain:        &geodata.DomainRule{Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Full, Value: "hostnamealias"}}},
 						ProxiedDomain: "hostname.localdomain",
 					},
 				},
@@ -705,7 +695,9 @@ func TestLocalDomain(t *testing.T) {
 		},
 		Outbound: []*core.OutboundHandlerConfig{
 			{
-				ProxySettings: serial.ToTypedMessage(&freedom.Config{}),
+				ProxySettings: serial.ToTypedMessage(&freedom.Config{
+					FinalRules: []*freedom.FinalRuleConfig{{Action: freedom.RuleAction_Allow}},
+				}),
 			},
 		},
 	}
@@ -718,7 +710,7 @@ func TestLocalDomain(t *testing.T) {
 	startTime := time.Now()
 
 	{ // Will match dotless:
-		ips, err := client.LookupIP("hostname", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("hostname", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -733,7 +725,7 @@ func TestLocalDomain(t *testing.T) {
 	}
 
 	{ // Will match domain:local
-		ips, err := client.LookupIP("hostname.local", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("hostname.local", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -748,7 +740,7 @@ func TestLocalDomain(t *testing.T) {
 	}
 
 	{ // Will match static ip
-		ips, err := client.LookupIP("hostnamestatic", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("hostnamestatic", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -763,7 +755,7 @@ func TestLocalDomain(t *testing.T) {
 	}
 
 	{ // Will match domain replacing
-		ips, err := client.LookupIP("hostnamealias", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("hostnamealias", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -777,8 +769,8 @@ func TestLocalDomain(t *testing.T) {
 		}
 	}
 
-	{ // Will match dotless:localhost, but not expectIPs: 127.0.0.2, 127.0.0.3, then matches at dotless:
-		ips, err := client.LookupIP("localhost", feature_dns.IPOption{
+	{ // Will match dotless:localhost, but not expectedIPs: 127.0.0.2, 127.0.0.3, then matches at dotless:
+		ips, _, err := client.LookupIP("localhost", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -792,8 +784,8 @@ func TestLocalDomain(t *testing.T) {
 		}
 	}
 
-	{ // Will match dotless:localhost, and expectIPs: 127.0.0.2, 127.0.0.3
-		ips, err := client.LookupIP("localhost-a", feature_dns.IPOption{
+	{ // Will match dotless:localhost, and expectedIPs: 127.0.0.2, 127.0.0.3
+		ips, _, err := client.LookupIP("localhost-a", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -807,8 +799,8 @@ func TestLocalDomain(t *testing.T) {
 		}
 	}
 
-	{ // Will match dotless:localhost, and expectIPs: 127.0.0.2, 127.0.0.3
-		ips, err := client.LookupIP("localhost-b", feature_dns.IPOption{
+	{ // Will match dotless:localhost, and expectedIPs: 127.0.0.2, 127.0.0.3
+		ips, _, err := client.LookupIP("localhost-b", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -823,7 +815,7 @@ func TestLocalDomain(t *testing.T) {
 	}
 
 	{ // Will match dotless:
-		ips, err := client.LookupIP("Mijia Cloud", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("Mijia Cloud", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -859,17 +851,6 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
 	config := &core.Config{
 		App: []*serial.TypedMessage{
 			serial.ToTypedMessage(&Config{
-				NameServers: []*net.Endpoint{
-					{
-						Network: net.Network_UDP,
-						Address: &net.IPOrDomain{
-							Address: &net.IPOrDomain_Ip{
-								Ip: []byte{127, 0, 0, 1},
-							},
-						},
-						Port: 9999, /* unreachable */
-					},
-				},
 				NameServer: []*NameServer{
 					{
 						Address: &net.Endpoint{
@@ -879,21 +860,7 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
 									Ip: []byte{127, 0, 0, 1},
 								},
 							},
-							Port: uint32(port),
-						},
-						PrioritizedDomain: []*NameServer_PriorityDomain{
-							{
-								Type:   DomainMatchingType_Subdomain,
-								Domain: "google.com",
-							},
-						},
-						Geoip: []*router.GeoIP{
-							{ // Will only match 8.8.8.8 and 8.8.4.4
-								Cidr: []*router.CIDR{
-									{Ip: []byte{8, 8, 8, 8}, Prefix: 32},
-									{Ip: []byte{8, 8, 4, 4}, Prefix: 32},
-								},
-							},
+							Port: 9999, /* unreachable */
 						},
 					},
 					{
@@ -906,18 +873,15 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
 							},
 							Port: uint32(port),
 						},
-						PrioritizedDomain: []*NameServer_PriorityDomain{
+						Domain: []*geodata.DomainRule{
 							{
-								Type:   DomainMatchingType_Subdomain,
-								Domain: "google.com",
+								Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Domain, Value: "google.com"}},
 							},
 						},
-						Geoip: []*router.GeoIP{
-							{ // Will match 8.8.8.8 and 8.8.8.7, etc
-								Cidr: []*router.CIDR{
-									{Ip: []byte{8, 8, 8, 7}, Prefix: 24},
-								},
-							},
+						ExpectedIp: []*geodata.IPRule{
+							// Will only match 8.8.8.8 and 8.8.4.4
+							{Value: &geodata.IPRule_Custom{Custom: &geodata.CIDRRule{Cidr: &geodata.CIDR{Ip: []byte{8, 8, 8, 8}, Prefix: 32}}}},
+							{Value: &geodata.IPRule_Custom{Custom: &geodata.CIDRRule{Cidr: &geodata.CIDR{Ip: []byte{8, 8, 4, 4}, Prefix: 32}}}},
 						},
 					},
 					{
@@ -930,18 +894,14 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
 							},
 							Port: uint32(port),
 						},
-						PrioritizedDomain: []*NameServer_PriorityDomain{
+						Domain: []*geodata.DomainRule{
 							{
-								Type:   DomainMatchingType_Subdomain,
-								Domain: "api.google.com",
+								Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Domain, Value: "google.com"}},
 							},
 						},
-						Geoip: []*router.GeoIP{
-							{ // Will only match 8.8.7.7 (api.google.com)
-								Cidr: []*router.CIDR{
-									{Ip: []byte{8, 8, 7, 7}, Prefix: 32},
-								},
-							},
+						ExpectedIp: []*geodata.IPRule{
+							// Will match 8.8.8.8 and 8.8.8.7, etc
+							{Value: &geodata.IPRule_Custom{Custom: &geodata.CIDRRule{Cidr: &geodata.CIDR{Ip: []byte{8, 8, 8, 7}, Prefix: 24}}}},
 						},
 					},
 					{
@@ -954,18 +914,34 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
 							},
 							Port: uint32(port),
 						},
-						PrioritizedDomain: []*NameServer_PriorityDomain{
+						Domain: []*geodata.DomainRule{
 							{
-								Type:   DomainMatchingType_Full,
-								Domain: "v2.api.google.com",
+								Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Domain, Value: "api.google.com"}},
 							},
 						},
-						Geoip: []*router.GeoIP{
-							{ // Will only match 8.8.7.8 (v2.api.google.com)
-								Cidr: []*router.CIDR{
-									{Ip: []byte{8, 8, 7, 8}, Prefix: 32},
+						ExpectedIp: []*geodata.IPRule{
+							// Will only match 8.8.7.7 (api.google.com)
+							{Value: &geodata.IPRule_Custom{Custom: &geodata.CIDRRule{Cidr: &geodata.CIDR{Ip: []byte{8, 8, 7, 7}, Prefix: 32}}}},
+						},
+					},
+					{
+						Address: &net.Endpoint{
+							Network: net.Network_UDP,
+							Address: &net.IPOrDomain{
+								Address: &net.IPOrDomain_Ip{
+									Ip: []byte{127, 0, 0, 1},
 								},
 							},
+							Port: uint32(port),
+						},
+						Domain: []*geodata.DomainRule{
+							{
+								Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Full, Value: "v2.api.google.com"}},
+							},
+						},
+						ExpectedIp: []*geodata.IPRule{
+							// Will only match 8.8.7.8 (v2.api.google.com)
+							{Value: &geodata.IPRule_Custom{Custom: &geodata.CIDRRule{Cidr: &geodata.CIDR{Ip: []byte{8, 8, 7, 8}, Prefix: 32}}}},
 						},
 					},
 				},
@@ -976,7 +952,9 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
 		},
 		Outbound: []*core.OutboundHandlerConfig{
 			{
-				ProxySettings: serial.ToTypedMessage(&freedom.Config{}),
+				ProxySettings: serial.ToTypedMessage(&freedom.Config{
+					FinalRules: []*freedom.FinalRuleConfig{{Action: freedom.RuleAction_Allow}},
+				}),
 			},
 		},
 	}
@@ -989,7 +967,7 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
 	startTime := time.Now()
 
 	{ // Will match server 1,2 and server 1 returns expected ip
-		ips, err := client.LookupIP("google.com", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("google.com", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -1004,7 +982,7 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
 	}
 
 	{ // Will match server 1,2 and server 1 returns unexpected ip, then server 2 returns expected one
-		ips, err := client.LookupIP("ipv6.google.com", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("ipv6.google.com", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: false,
 			FakeEnable: false,
@@ -1019,7 +997,7 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
 	}
 
 	{ // Will match server 3,1,2 and server 3 returns expected one
-		ips, err := client.LookupIP("api.google.com", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("api.google.com", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -1034,7 +1012,7 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
 	}
 
 	{ // Will match server 4,3,1,2 and server 4 returns expected one
-		ips, err := client.LookupIP("v2.api.google.com", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("v2.api.google.com", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,

app/dns/dnscommon.go

@@ -3,6 +3,7 @@ package dns
 import (
 	"context"
 	"encoding/binary"
+	"math"
 	"strings"
 	"time"
 
@@ -13,10 +14,12 @@ import (
 	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/core"
 	dns_feature "github.com/xtls/xray-core/features/dns"
+
 	"golang.org/x/net/dns/dnsmessage"
 )
 
 // Fqdn normalizes domain make sure it ends with '.'
+// case-sensitive
 func Fqdn(domain string) string {
 	if len(domain) > 0 && strings.HasSuffix(domain, ".") {
 		return domain
@@ -31,30 +34,29 @@ type record struct {
 
 // IPRecord is a cacheable item for a resolved domain
 type IPRecord struct {
-	ReqID  uint16
-	IP     []net.Address
-	Expire time.Time
-	RCode  dnsmessage.RCode
+	ReqID     uint16
+	IP        []net.IP
+	Expire    time.Time
+	RCode     dnsmessage.RCode
+	RawHeader *dnsmessage.Header
 }
 
-func (r *IPRecord) getIPs() ([]net.Address, error) {
-	if r == nil || r.Expire.Before(time.Now()) {
-		return nil, errRecordNotFound
+func (r *IPRecord) getIPs() ([]net.IP, int32, error) {
+	if r == nil {
+		return nil, 0, errRecordNotFound
 	}
+
+	untilExpire := time.Until(r.Expire).Seconds()
+	ttl := int32(math.Ceil(untilExpire))
+
 	if r.RCode != dnsmessage.RCodeSuccess {
-		return nil, dns_feature.RCodeError(r.RCode)
+		return nil, ttl, dns_feature.RCodeError(r.RCode)
+	}
+	if len(r.IP) == 0 {
+		return nil, ttl, dns_feature.ErrEmptyResponse
 	}
-	return r.IP, nil
-}
 
-func isNewer(baseRec *IPRecord, newRec *IPRecord) bool {
-	if newRec == nil {
-		return false
-	}
-	if baseRec == nil {
-		return true
-	}
-	return baseRec.Expire.Before(newRec.Expire)
+	return r.IP, ttl, nil
 }
 
 var errRecordNotFound = errors.New("record not found")
@@ -67,63 +69,78 @@ type dnsRequest struct {
 	msg     *dnsmessage.Message
 }
 
-func genEDNS0Options(clientIP net.IP) *dnsmessage.Resource {
-	if len(clientIP) == 0 {
+func genEDNS0Options(clientIP net.IP, padding int) *dnsmessage.Resource {
+	if len(clientIP) == 0 && padding == 0 {
 		return nil
 	}
 
-	var netmask int
-	var family uint16
-
-	if len(clientIP) == 4 {
-		family = 1
-		netmask = 24 // 24 for IPV4, 96 for IPv6
-	} else {
-		family = 2
-		netmask = 96
-	}
-
-	b := make([]byte, 4)
-	binary.BigEndian.PutUint16(b[0:], family)
-	b[2] = byte(netmask)
-	b[3] = 0
-	switch family {
-	case 1:
-		ip := clientIP.To4().Mask(net.CIDRMask(netmask, net.IPv4len*8))
-		needLength := (netmask + 8 - 1) / 8 // division rounding up
-		b = append(b, ip[:needLength]...)
-	case 2:
-		ip := clientIP.Mask(net.CIDRMask(netmask, net.IPv6len*8))
-		needLength := (netmask + 8 - 1) / 8 // division rounding up
-		b = append(b, ip[:needLength]...)
-	}
-
-	const EDNS0SUBNET = 0x08
+	const EDNS0SUBNET = 0x8
+	const EDNS0PADDING = 0xc
 
 	opt := new(dnsmessage.Resource)
 	common.Must(opt.Header.SetEDNS0(1350, 0xfe00, true))
+	body := dnsmessage.OPTResource{}
+	opt.Body = &body
 
-	opt.Body = &dnsmessage.OPTResource{
-		Options: []dnsmessage.Option{
-			{
+	if len(clientIP) != 0 {
+		var netmask int
+		var family uint16
+
+		if len(clientIP) == 4 {
+			family = 1
+			netmask = 24 // 24 for IPV4, 96 for IPv6
+		} else {
+			family = 2
+			netmask = 96
+		}
+
+		b := make([]byte, 4)
+		binary.BigEndian.PutUint16(b[0:], family)
+		b[2] = byte(netmask)
+		b[3] = 0
+		switch family {
+		case 1:
+			ip := clientIP.To4().Mask(net.CIDRMask(netmask, net.IPv4len*8))
+			needLength := (netmask + 8 - 1) / 8 // division rounding up
+			b = append(b, ip[:needLength]...)
+		case 2:
+			ip := clientIP.Mask(net.CIDRMask(netmask, net.IPv6len*8))
+			needLength := (netmask + 8 - 1) / 8 // division rounding up
+			b = append(b, ip[:needLength]...)
+		}
+
+		body.Options = append(body.Options,
+			dnsmessage.Option{
 				Code: EDNS0SUBNET,
 				Data: b,
-			},
-		},
+			})
+	}
+
+	if padding != 0 {
+		body.Options = append(body.Options,
+			dnsmessage.Option{
+				Code: EDNS0PADDING,
+				Data: make([]byte, padding),
+			})
 	}
 
 	return opt
 }
 
-func buildReqMsgs(domain string, option dns_feature.IPOption, reqIDGen func() uint16, reqOpts *dnsmessage.Resource) []*dnsRequest {
+func buildReqMsgs(domain string, option dns_feature.IPOption, reqIDGen func() uint16, reqOpts *dnsmessage.Resource) ([]*dnsRequest, error) {
+	name, err := dnsmessage.NewName(domain)
+	if err != nil {
+		return nil, err
+	}
+
 	qA := dnsmessage.Question{
-		Name:  dnsmessage.MustNewName(domain),
+		Name:  name,
 		Type:  dnsmessage.TypeA,
 		Class: dnsmessage.ClassINET,
 	}
 
 	qAAAA := dnsmessage.Question{
-		Name:  dnsmessage.MustNewName(domain),
+		Name:  name,
 		Type:  dnsmessage.TypeAAAA,
 		Class: dnsmessage.ClassINET,
 	}
@@ -163,7 +180,7 @@ func buildReqMsgs(domain string, option dns_feature.IPOption, reqIDGen func() ui
 		})
 	}
 
-	return reqs
+	return reqs, nil
 }
 
 // parseResponse parses DNS answers from the returned payload
@@ -179,10 +196,16 @@ func parseResponse(payload []byte) (*IPRecord, error) {
 
 	now := time.Now()
 	ipRecord := &IPRecord{
-		ReqID:  h.ID,
-		RCode:  h.RCode,
-		Expire: now.Add(time.Second * 600),
+		ReqID:     h.ID,
+		RCode:     h.RCode,
+		RawHeader: &h,
 	}
+	defer func() {
+		// set to default TTL if no valid TTL is found
+		if ipRecord.Expire.IsZero() {
+			ipRecord.Expire = now.Add(time.Second * dns_feature.DefaultTTL)
+		}
+	}()
 
 L:
 	for {
@@ -196,10 +219,10 @@ L:
 
 		ttl := ah.TTL
 		if ttl == 0 {
-			ttl = 600
+			ttl = 1
 		}
 		expire := now.Add(time.Duration(ttl) * time.Second)
-		if ipRecord.Expire.After(expire) {
+		if ipRecord.Expire.IsZero() || ipRecord.Expire.After(expire) {
 			ipRecord.Expire = expire
 		}
 
@@ -210,14 +233,17 @@ L:
 				errors.LogInfoInner(context.Background(), err, "failed to parse A record for domain: ", ah.Name)
 				break L
 			}
-			ipRecord.IP = append(ipRecord.IP, net.IPAddress(ans.A[:]))
+			ipRecord.IP = append(ipRecord.IP, net.IPAddress(ans.A[:]).IP())
 		case dnsmessage.TypeAAAA:
 			ans, err := parser.AAAAResource()
 			if err != nil {
 				errors.LogInfoInner(context.Background(), err, "failed to parse AAAA record for domain: ", ah.Name)
 				break L
 			}
-			ipRecord.IP = append(ipRecord.IP, net.IPAddress(ans.AAAA[:]))
+			newIP := net.IPAddress(ans.AAAA[:]).IP()
+			if len(newIP) == net.IPv6len {
+				ipRecord.IP = append(ipRecord.IP, newIP)
+			}
 		default:
 			if err := parser.SkipAnswer(); err != nil {
 				errors.LogInfoInner(context.Background(), err, "failed to skip answer")

app/dns/dnscommon_test.go

@@ -2,6 +2,7 @@ package dns
 
 import (
 	"math/rand"
+	"strings"
 	"testing"
 	"time"
 
@@ -18,31 +19,33 @@ func Test_parseResponse(t *testing.T) {
 
 	ans := new(dns.Msg)
 	ans.Id = 0
-	p = append(p, common.Must2(ans.Pack()).([]byte))
+	p = append(p, common.Must2(ans.Pack()))
 
 	p = append(p, []byte{})
 
 	ans = new(dns.Msg)
 	ans.Id = 1
-	ans.Answer = append(ans.Answer,
-		common.Must2(dns.NewRR("google.com. IN CNAME m.test.google.com")).(dns.RR),
-		common.Must2(dns.NewRR("google.com. IN CNAME fake.google.com")).(dns.RR),
-		common.Must2(dns.NewRR("google.com. IN A 8.8.8.8")).(dns.RR),
-		common.Must2(dns.NewRR("google.com. IN A 8.8.4.4")).(dns.RR),
+	ans.Answer = append(
+		ans.Answer,
+		common.Must2(dns.NewRR("google.com. IN CNAME m.test.google.com")),
+		common.Must2(dns.NewRR("google.com. IN CNAME fake.google.com")),
+		common.Must2(dns.NewRR("google.com. IN A 8.8.8.8")),
+		common.Must2(dns.NewRR("google.com. IN A 8.8.4.4")),
 	)
-	p = append(p, common.Must2(ans.Pack()).([]byte))
+	p = append(p, common.Must2(ans.Pack()))
 
 	ans = new(dns.Msg)
 	ans.Id = 2
-	ans.Answer = append(ans.Answer,
-		common.Must2(dns.NewRR("google.com. IN CNAME m.test.google.com")).(dns.RR),
-		common.Must2(dns.NewRR("google.com. IN CNAME fake.google.com")).(dns.RR),
-		common.Must2(dns.NewRR("google.com. IN CNAME m.test.google.com")).(dns.RR),
-		common.Must2(dns.NewRR("google.com. IN CNAME test.google.com")).(dns.RR),
-		common.Must2(dns.NewRR("google.com. IN AAAA 2001::123:8888")).(dns.RR),
-		common.Must2(dns.NewRR("google.com. IN AAAA 2001::123:8844")).(dns.RR),
+	ans.Answer = append(
+		ans.Answer,
+		common.Must2(dns.NewRR("google.com. IN CNAME m.test.google.com")),
+		common.Must2(dns.NewRR("google.com. IN CNAME fake.google.com")),
+		common.Must2(dns.NewRR("google.com. IN CNAME m.test.google.com")),
+		common.Must2(dns.NewRR("google.com. IN CNAME test.google.com")),
+		common.Must2(dns.NewRR("google.com. IN AAAA 2001:4860:4860::8888")),
+		common.Must2(dns.NewRR("google.com. IN AAAA 2001:4860:4860::8844")),
 	)
-	p = append(p, common.Must2(ans.Pack()).([]byte))
+	p = append(p, common.Must2(ans.Pack()))
 
 	tests := []struct {
 		name    string
@@ -51,7 +54,7 @@ func Test_parseResponse(t *testing.T) {
 	}{
 		{
 			"empty",
-			&IPRecord{0, []net.Address(nil), time.Time{}, dnsmessage.RCodeSuccess},
+			&IPRecord{0, []net.IP(nil), time.Time{}, dnsmessage.RCodeSuccess, nil},
 			false,
 		},
 		{
@@ -63,15 +66,16 @@ func Test_parseResponse(t *testing.T) {
 			"a record",
 			&IPRecord{
 				1,
-				[]net.Address{net.ParseAddress("8.8.8.8"), net.ParseAddress("8.8.4.4")},
+				[]net.IP{net.ParseIP("8.8.8.8"), net.ParseIP("8.8.4.4")},
 				time.Time{},
 				dnsmessage.RCodeSuccess,
+				nil,
 			},
 			false,
 		},
 		{
 			"aaaa record",
-			&IPRecord{2, []net.Address{net.ParseAddress("2001::123:8888"), net.ParseAddress("2001::123:8844")}, time.Time{}, dnsmessage.RCodeSuccess},
+			&IPRecord{2, []net.IP{net.ParseIP("2001:4860:4860::8888"), net.ParseIP("2001:4860:4860::8844")}, time.Time{}, dnsmessage.RCodeSuccess, nil},
 			false,
 		},
 	}
@@ -84,11 +88,12 @@ func Test_parseResponse(t *testing.T) {
 			}
 
 			if got != nil {
-				// reset the time
+				// reset the time and RawHeader
 				got.Expire = time.Time{}
+				got.RawHeader = nil
 			}
 			if cmp.Diff(got, tt.want) != "" {
-				t.Errorf(cmp.Diff(got, tt.want))
+				t.Error(cmp.Diff(got, tt.want))
 				// t.Errorf("handleResponse() = %#v, want %#v", got, tt.want)
 			}
 		})
@@ -129,10 +134,15 @@ func Test_buildReqMsgs(t *testing.T) {
 			IPv6Enable: false,
 			FakeEnable: false,
 		}, nil}, 0},
+		{"name too long", args{strings.Repeat("a", 256), dns_feature.IPOption{
+			IPv4Enable: true,
+			IPv6Enable: true,
+			FakeEnable: false,
+		}, nil}, 0},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			if got := buildReqMsgs(tt.args.domain, tt.args.option, stubID, tt.args.reqOpts); !(len(got) == tt.want) {
+			if got, _ := buildReqMsgs(tt.args.domain, tt.args.option, stubID, tt.args.reqOpts); !(len(got) == tt.want) {
 				t.Errorf("buildReqMsgs() = %v, want %v", got, tt.want)
 			}
 		})
@@ -154,7 +164,7 @@ func Test_genEDNS0Options(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			if got := genEDNS0Options(tt.args.clientIP); got == nil {
+			if got := genEDNS0Options(tt.args.clientIP, 0); got == nil {
 				t.Errorf("genEDNS0Options() = %v, want %v", got, tt.want)
 			}
 		})

app/dns/fakedns/fake.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"math"
 	"math/big"
-	gonet "net"
 	"sync"
 	"time"
 
@@ -17,8 +16,8 @@ import (
 
 type Holder struct {
 	domainToIP cache.Lru
-	ipRange    *gonet.IPNet
-	mu         *sync.Mutex
+	ipRange    *net.IPNet
+	mu         sync.Mutex
 
 	config *FakeDnsPool
 }
@@ -50,9 +49,7 @@ func (fkdns *Holder) Start() error {
 }
 
 func (fkdns *Holder) Close() error {
-	fkdns.domainToIP = nil
-	fkdns.ipRange = nil
-	fkdns.mu = nil
+	// nothing to do for now, just wait GC
 	return nil
 }
 
@@ -71,7 +68,7 @@ func NewFakeDNSHolder() (*Holder, error) {
 }
 
 func NewFakeDNSHolderConfigOnly(conf *FakeDnsPool) (*Holder, error) {
-	return &Holder{nil, nil, nil, conf}, nil
+	return &Holder{config: conf}, nil
 }
 
 func (fkdns *Holder) initializeFromConfig() error {
@@ -79,10 +76,10 @@ func (fkdns *Holder) initializeFromConfig() error {
 }
 
 func (fkdns *Holder) initialize(ipPoolCidr string, lruSize int) error {
-	var ipRange *gonet.IPNet
+	var ipRange *net.IPNet
 	var err error
 
-	if _, ipRange, err = gonet.ParseCIDR(ipPoolCidr); err != nil {
+	if _, ipRange, err = net.ParseCIDR(ipPoolCidr); err != nil {
 		return errors.New("Unable to parse CIDR for Fake DNS IP assignment").Base(err).AtError()
 	}
 
@@ -93,7 +90,6 @@ func (fkdns *Holder) initialize(ipPoolCidr string, lruSize int) error {
 	}
 	fkdns.domainToIP = cache.NewLru(lruSize)
 	fkdns.ipRange = ipRange
-	fkdns.mu = new(sync.Mutex)
 	return nil
 }
 
@@ -104,7 +100,7 @@ func (fkdns *Holder) GetFakeIPForDomain(domain string) []net.Address {
 	if v, ok := fkdns.domainToIP.Get(domain); ok {
 		return []net.Address{v.(net.Address)}
 	}
-	currentTimeMillis := uint64(time.Now().UnixNano() / 1e6)
+	currentTimeMillis := uint64(time.Now().UnixMilli())
 	ones, bits := fkdns.ipRange.Mask.Size()
 	rooms := bits - ones
 	if rooms < 64 {
@@ -203,12 +199,11 @@ func (h *HolderMulti) Start() error {
 }
 
 func (h *HolderMulti) Close() error {
+	var errs []error
 	for _, v := range h.holders {
-		if err := v.Close(); err != nil {
-			return errors.New("Cannot close all fake dns pools").Base(err)
-		}
+		errs = append(errs, v.Close())
 	}
-	return nil
+	return errors.Combine(errs...)
 }
 
 func (h *HolderMulti) createHolderGroups() error {
@@ -223,7 +218,7 @@ func (h *HolderMulti) createHolderGroups() error {
 }
 
 func NewFakeDNSHolderMulti(conf *FakeDnsPoolMulti) (*HolderMulti, error) {
-	holderMulti := &HolderMulti{nil, conf}
+	holderMulti := &HolderMulti{config: conf}
 	if err := holderMulti.createHolderGroups(); err != nil {
 		return nil, err
 	}

app/dns/fakedns/fakedns.go

@@ -1,3 +1 @@
 package fakedns
-
-//go:generate go run github.com/xtls/xray-core/common/errors/errorgen

app/dns/fakedns/fakedns.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.1
-// 	protoc        v5.27.0
+// 	protoc-gen-go v1.36.11
+// 	protoc        v6.33.5
 // source: app/dns/fakedns/fakedns.proto
 
 package fakedns
@@ -11,6 +11,7 @@ import (
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	reflect "reflect"
 	sync "sync"
+	unsafe "unsafe"
 )
 
 const (
@@ -21,21 +22,18 @@ const (
 )
 
 type FakeDnsPool struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	IpPool        string                 `protobuf:"bytes,1,opt,name=ip_pool,json=ipPool,proto3" json:"ip_pool,omitempty"` //CIDR of IP pool used as fake DNS IP
+	LruSize       int64                  `protobuf:"varint,2,opt,name=lruSize,proto3" json:"lruSize,omitempty"`            //Size of Pool for remembering relationship between domain name and IP address
 	unknownFields protoimpl.UnknownFields
-
-	IpPool  string `protobuf:"bytes,1,opt,name=ip_pool,json=ipPool,proto3" json:"ip_pool,omitempty"` //CIDR of IP pool used as fake DNS IP
-	LruSize int64  `protobuf:"varint,2,opt,name=lruSize,proto3" json:"lruSize,omitempty"`            //Size of Pool for remembering relationship between domain name and IP address
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *FakeDnsPool) Reset() {
 	*x = FakeDnsPool{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_dns_fakedns_fakedns_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_dns_fakedns_fakedns_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *FakeDnsPool) String() string {
@@ -46,7 +44,7 @@ func (*FakeDnsPool) ProtoMessage() {}
 
 func (x *FakeDnsPool) ProtoReflect() protoreflect.Message {
 	mi := &file_app_dns_fakedns_fakedns_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -76,20 +74,17 @@ func (x *FakeDnsPool) GetLruSize() int64 {
 }
 
 type FakeDnsPoolMulti struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	Pools         []*FakeDnsPool         `protobuf:"bytes,1,rep,name=pools,proto3" json:"pools,omitempty"`
 	unknownFields protoimpl.UnknownFields
-
-	Pools []*FakeDnsPool `protobuf:"bytes,1,rep,name=pools,proto3" json:"pools,omitempty"`
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *FakeDnsPoolMulti) Reset() {
 	*x = FakeDnsPoolMulti{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_dns_fakedns_fakedns_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_dns_fakedns_fakedns_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *FakeDnsPoolMulti) String() string {
@@ -100,7 +95,7 @@ func (*FakeDnsPoolMulti) ProtoMessage() {}
 
 func (x *FakeDnsPoolMulti) ProtoReflect() protoreflect.Message {
 	mi := &file_app_dns_fakedns_fakedns_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -124,42 +119,30 @@ func (x *FakeDnsPoolMulti) GetPools() []*FakeDnsPool {
 
 var File_app_dns_fakedns_fakedns_proto protoreflect.FileDescriptor
 
-var file_app_dns_fakedns_fakedns_proto_rawDesc = []byte{
-	0x0a, 0x1d, 0x61, 0x70, 0x70, 0x2f, 0x64, 0x6e, 0x73, 0x2f, 0x66, 0x61, 0x6b, 0x65, 0x64, 0x6e,
-	0x73, 0x2f, 0x66, 0x61, 0x6b, 0x65, 0x64, 0x6e, 0x73, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12,
-	0x14, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x64, 0x6e, 0x73, 0x2e, 0x66, 0x61,
-	0x6b, 0x65, 0x64, 0x6e, 0x73, 0x22, 0x40, 0x0a, 0x0b, 0x46, 0x61, 0x6b, 0x65, 0x44, 0x6e, 0x73,
-	0x50, 0x6f, 0x6f, 0x6c, 0x12, 0x17, 0x0a, 0x07, 0x69, 0x70, 0x5f, 0x70, 0x6f, 0x6f, 0x6c, 0x18,
-	0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x06, 0x69, 0x70, 0x50, 0x6f, 0x6f, 0x6c, 0x12, 0x18, 0x0a,
-	0x07, 0x6c, 0x72, 0x75, 0x53, 0x69, 0x7a, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x03, 0x52, 0x07,
-	0x6c, 0x72, 0x75, 0x53, 0x69, 0x7a, 0x65, 0x22, 0x4b, 0x0a, 0x10, 0x46, 0x61, 0x6b, 0x65, 0x44,
-	0x6e, 0x73, 0x50, 0x6f, 0x6f, 0x6c, 0x4d, 0x75, 0x6c, 0x74, 0x69, 0x12, 0x37, 0x0a, 0x05, 0x70,
-	0x6f, 0x6f, 0x6c, 0x73, 0x18, 0x01, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x21, 0x2e, 0x78, 0x72, 0x61,
-	0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x64, 0x6e, 0x73, 0x2e, 0x66, 0x61, 0x6b, 0x65, 0x64, 0x6e,
-	0x73, 0x2e, 0x46, 0x61, 0x6b, 0x65, 0x44, 0x6e, 0x73, 0x50, 0x6f, 0x6f, 0x6c, 0x52, 0x05, 0x70,
-	0x6f, 0x6f, 0x6c, 0x73, 0x42, 0x5e, 0x0a, 0x18, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79,
-	0x2e, 0x61, 0x70, 0x70, 0x2e, 0x64, 0x6e, 0x73, 0x2e, 0x66, 0x61, 0x6b, 0x65, 0x64, 0x6e, 0x73,
-	0x50, 0x01, 0x5a, 0x29, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78,
-	0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x61, 0x70,
-	0x70, 0x2f, 0x64, 0x6e, 0x73, 0x2f, 0x66, 0x61, 0x6b, 0x65, 0x64, 0x6e, 0x73, 0xaa, 0x02, 0x14,
-	0x58, 0x72, 0x61, 0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x44, 0x6e, 0x73, 0x2e, 0x46, 0x61, 0x6b,
-	0x65, 0x64, 0x6e, 0x73, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
-}
+const file_app_dns_fakedns_fakedns_proto_rawDesc = "" +
+	"\n" +
+	"\x1dapp/dns/fakedns/fakedns.proto\x12\x14xray.app.dns.fakedns\"@\n" +
+	"\vFakeDnsPool\x12\x17\n" +
+	"\aip_pool\x18\x01 \x01(\tR\x06ipPool\x12\x18\n" +
+	"\alruSize\x18\x02 \x01(\x03R\alruSize\"K\n" +
+	"\x10FakeDnsPoolMulti\x127\n" +
+	"\x05pools\x18\x01 \x03(\v2!.xray.app.dns.fakedns.FakeDnsPoolR\x05poolsB^\n" +
+	"\x18com.xray.app.dns.fakednsP\x01Z)github.com/xtls/xray-core/app/dns/fakedns\xaa\x02\x14Xray.App.Dns.Fakednsb\x06proto3"
 
 var (
 	file_app_dns_fakedns_fakedns_proto_rawDescOnce sync.Once
-	file_app_dns_fakedns_fakedns_proto_rawDescData = file_app_dns_fakedns_fakedns_proto_rawDesc
+	file_app_dns_fakedns_fakedns_proto_rawDescData []byte
 )
 
 func file_app_dns_fakedns_fakedns_proto_rawDescGZIP() []byte {
 	file_app_dns_fakedns_fakedns_proto_rawDescOnce.Do(func() {
-		file_app_dns_fakedns_fakedns_proto_rawDescData = protoimpl.X.CompressGZIP(file_app_dns_fakedns_fakedns_proto_rawDescData)
+		file_app_dns_fakedns_fakedns_proto_rawDescData = protoimpl.X.CompressGZIP(unsafe.Slice(unsafe.StringData(file_app_dns_fakedns_fakedns_proto_rawDesc), len(file_app_dns_fakedns_fakedns_proto_rawDesc)))
 	})
 	return file_app_dns_fakedns_fakedns_proto_rawDescData
 }
 
 var file_app_dns_fakedns_fakedns_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
-var file_app_dns_fakedns_fakedns_proto_goTypes = []interface{}{
+var file_app_dns_fakedns_fakedns_proto_goTypes = []any{
 	(*FakeDnsPool)(nil),      // 0: xray.app.dns.fakedns.FakeDnsPool
 	(*FakeDnsPoolMulti)(nil), // 1: xray.app.dns.fakedns.FakeDnsPoolMulti
 }
@@ -177,37 +160,11 @@ func file_app_dns_fakedns_fakedns_proto_init() {
 	if File_app_dns_fakedns_fakedns_proto != nil {
 		return
 	}
-	if !protoimpl.UnsafeEnabled {
-		file_app_dns_fakedns_fakedns_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*FakeDnsPool); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_dns_fakedns_fakedns_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*FakeDnsPoolMulti); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_app_dns_fakedns_fakedns_proto_rawDesc,
+			RawDescriptor: unsafe.Slice(unsafe.StringData(file_app_dns_fakedns_fakedns_proto_rawDesc), len(file_app_dns_fakedns_fakedns_proto_rawDesc)),
 			NumEnums:      0,
 			NumMessages:   2,
 			NumExtensions: 0,
@@ -218,7 +175,6 @@ func file_app_dns_fakedns_fakedns_proto_init() {
 		MessageInfos:      file_app_dns_fakedns_fakedns_proto_msgTypes,
 	}.Build()
 	File_app_dns_fakedns_fakedns_proto = out.File
-	file_app_dns_fakedns_fakedns_proto_rawDesc = nil
 	file_app_dns_fakedns_fakedns_proto_goTypes = nil
 	file_app_dns_fakedns_fakedns_proto_depIdxs = nil
 }

app/dns/fakedns/fakedns_test.go

@@ -1,7 +1,6 @@
 package fakedns
 
 import (
-	gonet "net"
 	"strconv"
 	"testing"
 
@@ -130,15 +129,16 @@ func TestFakeDnsHolderCreateMappingAndRollOver(t *testing.T) {
 }
 
 func TestFakeDNSMulti(t *testing.T) {
-	fakeMulti, err := NewFakeDNSHolderMulti(&FakeDnsPoolMulti{
-		Pools: []*FakeDnsPool{{
-			IpPool:  "240.0.0.0/12",
-			LruSize: 256,
-		}, {
-			IpPool:  "fddd:c5b4:ff5f:f4f0::/64",
-			LruSize: 256,
-		}},
-	},
+	fakeMulti, err := NewFakeDNSHolderMulti(
+		&FakeDnsPoolMulti{
+			Pools: []*FakeDnsPool{{
+				IpPool:  "240.0.0.0/12",
+				LruSize: 256,
+			}, {
+				IpPool:  "fddd:c5b4:ff5f:f4f0::/64",
+				LruSize: 256,
+			}},
+		},
 	)
 	common.Must(err)
 
@@ -155,7 +155,7 @@ func TestFakeDNSMulti(t *testing.T) {
 			assert.True(t, inPool)
 		})
 		t.Run("ipv6", func(t *testing.T) {
-			ip, err := gonet.ResolveIPAddr("ip", "fddd:c5b4:ff5f:f4f0::5")
+			ip, err := net.ResolveIPAddr("ip", "fddd:c5b4:ff5f:f4f0::5")
 			assert.Nil(t, err)
 			inPool := fakeMulti.IsIPInIPPool(net.IPAddress(ip.IP))
 			assert.True(t, inPool)
@@ -165,7 +165,7 @@ func TestFakeDNSMulti(t *testing.T) {
 			assert.False(t, inPool)
 		})
 		t.Run("ipv6_inverse", func(t *testing.T) {
-			ip, err := gonet.ResolveIPAddr("ip", "fcdd:c5b4:ff5f:f4f0::5")
+			ip, err := net.ResolveIPAddr("ip", "fcdd:c5b4:ff5f:f4f0::5")
 			assert.Nil(t, err)
 			inPool := fakeMulti.IsIPInIPPool(net.IPAddress(ip.IP))
 			assert.False(t, inPool)

app/dns/hosts.go

@@ -2,72 +2,65 @@ package dns
 
 import (
 	"context"
+	"strconv"
+	"strings"
 
-	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/common/geodata"
 	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/common/strmatcher"
-	"github.com/xtls/xray-core/features"
 	"github.com/xtls/xray-core/features/dns"
 )
 
 // StaticHosts represents static domain-ip mapping in DNS server.
 type StaticHosts struct {
-	ips      [][]net.Address
-	matchers *strmatcher.MatcherGroup
+	responses [][]net.Address
+	matcher   geodata.DomainMatcher
 }
 
 // NewStaticHosts creates a new StaticHosts instance.
-func NewStaticHosts(hosts []*Config_HostMapping, legacy map[string]*net.IPOrDomain) (*StaticHosts, error) {
-	g := new(strmatcher.MatcherGroup)
-	sh := &StaticHosts{
-		ips:      make([][]net.Address, len(hosts)+len(legacy)+16),
-		matchers: g,
-	}
-
-	if legacy != nil {
-		features.PrintDeprecatedFeatureWarning("simple host mapping")
-
-		for domain, ip := range legacy {
-			matcher, err := strmatcher.Full.New(domain)
-			common.Must(err)
-			id := g.Add(matcher)
-
-			address := ip.AsAddress()
-			if address.Family().IsDomain() {
-				return nil, errors.New("invalid domain address in static hosts: ", address.Domain()).AtWarning()
-			}
-
-			sh.ips[id] = []net.Address{address}
-		}
-	}
+func NewStaticHosts(hosts []*Config_HostMapping) (*StaticHosts, error) {
+	reps := make([][]net.Address, 0, len(hosts))
+	rules := make([]*geodata.DomainRule, 0, len(hosts))
 
 	for _, mapping := range hosts {
-		matcher, err := toStrMatcher(mapping.Type, mapping.Domain)
-		if err != nil {
-			return nil, errors.New("failed to create domain matcher").Base(err)
-		}
-		id := g.Add(matcher)
-		ips := make([]net.Address, 0, len(mapping.Ip)+1)
+		rep := make([]net.Address, 0, len(mapping.Ip))
 		switch {
 		case len(mapping.ProxiedDomain) > 0:
-			ips = append(ips, net.DomainAddress(mapping.ProxiedDomain))
+			if mapping.ProxiedDomain[0] == '#' {
+				rcode, err := strconv.Atoi(mapping.ProxiedDomain[1:])
+				if err != nil {
+					return nil, err
+				}
+				rep = append(rep, dns.RCodeError(rcode))
+			} else {
+				rep = append(rep, net.DomainAddress(mapping.ProxiedDomain))
+			}
 		case len(mapping.Ip) > 0:
 			for _, ip := range mapping.Ip {
 				addr := net.IPAddress(ip)
 				if addr == nil {
-					return nil, errors.New("invalid IP address in static hosts: ", ip).AtWarning()
+					errors.LogError(context.Background(), "invalid IP address in static hosts: ", ip, ", ignore this ip for rule: ", mapping.Domain)
+					continue
 				}
-				ips = append(ips, addr)
+				rep = append(rep, addr)
 			}
-		default:
-			return nil, errors.New("neither IP address nor proxied domain specified for domain: ", mapping.Domain).AtWarning()
 		}
-
-		sh.ips[id] = ips
+		reps = append(reps, rep)
+		rules = append(rules, mapping.Domain)
 	}
 
-	return sh, nil
+	if len(rules) == 0 {
+		return &StaticHosts{}, nil
+	}
+
+	matcher, err := geodata.DomainReg.BuildDomainMatcher(rules)
+	if err != nil {
+		return nil, err
+	}
+	return &StaticHosts{
+		responses: reps,
+		matcher:   matcher,
+	}, nil
 }
 
 func filterIP(ips []net.Address, option dns.IPOption) []net.Address {
@@ -80,33 +73,57 @@ func filterIP(ips []net.Address, option dns.IPOption) []net.Address {
 	return filtered
 }
 
-func (h *StaticHosts) lookupInternal(domain string) []net.Address {
-	var ips []net.Address
-	for _, id := range h.matchers.Match(domain) {
-		ips = append(ips, h.ips[id]...)
+func (h *StaticHosts) lookupInternal(domain string) ([]net.Address, error) {
+	ips := make([]net.Address, 0)
+	found := false
+	for _, idx := range h.matcher.Match(domain) {
+		for _, rep := range h.responses[idx] {
+			if err, ok := rep.(dns.RCodeError); ok {
+				if uint16(err) == 0 {
+					return nil, dns.ErrEmptyResponse
+				}
+				return nil, err
+			}
+		}
+		ips = append(ips, h.responses[idx]...)
+		found = true
 	}
-	return ips
+	if !found {
+		return nil, nil
+	}
+	return ips, nil
 }
 
-func (h *StaticHosts) lookup(domain string, option dns.IPOption, maxDepth int) []net.Address {
-	switch addrs := h.lookupInternal(domain); {
-	case len(addrs) == 0: // Not recorded in static hosts, return nil
-		return nil
+func (h *StaticHosts) lookup(domain string, option dns.IPOption, maxDepth int) ([]net.Address, error) {
+	domain = strings.ToLower(domain)
+	switch addrs, err := h.lookupInternal(domain); {
+	case err != nil:
+		return nil, err
+	case addrs == nil: // Not recorded in static hosts, return nil
+		return nil, nil
+	case len(addrs) == 0: // Domain recorded, but no valid IP returned
+		return addrs, nil
 	case len(addrs) == 1 && addrs[0].Family().IsDomain(): // Try to unwrap domain
 		errors.LogDebug(context.Background(), "found replaced domain: ", domain, " -> ", addrs[0].Domain(), ". Try to unwrap it")
 		if maxDepth > 0 {
-			unwrapped := h.lookup(addrs[0].Domain(), option, maxDepth-1)
+			unwrapped, err := h.lookup(addrs[0].Domain(), option, maxDepth-1)
+			if err != nil {
+				return nil, err
+			}
 			if unwrapped != nil {
-				return unwrapped
+				return unwrapped, nil
 			}
 		}
-		return addrs
+		return addrs, nil
 	default: // IP record found, return a non-nil IP array
-		return filterIP(addrs, option)
+		return filterIP(addrs, option), nil
 	}
 }
 
 // Lookup returns IP addresses or proxied domain for the given domain, if exists in this StaticHosts.
-func (h *StaticHosts) Lookup(domain string, option dns.IPOption) []net.Address {
+func (h *StaticHosts) Lookup(domain string, option dns.IPOption) ([]net.Address, error) {
+	if h.matcher == nil {
+		return nil, nil
+	}
 	return h.lookup(domain, option, 5)
 }

app/dns/hosts_test.go

@@ -6,6 +6,7 @@ import (
 	"github.com/google/go-cmp/cmp"
 	. "github.com/xtls/xray-core/app/dns"
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/geodata"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/features/dns"
 )
@@ -13,15 +14,17 @@ import (
 func TestStaticHosts(t *testing.T) {
 	pb := []*Config_HostMapping{
 		{
-			Type:   DomainMatchingType_Full,
-			Domain: "example.com",
+			Domain:        &geodata.DomainRule{Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Domain, Value: "lan"}}},
+			ProxiedDomain: "#3",
+		},
+		{
+			Domain: &geodata.DomainRule{Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Full, Value: "example.com"}}},
 			Ip: [][]byte{
 				{1, 1, 1, 1},
 			},
 		},
 		{
-			Type:   DomainMatchingType_Full,
-			Domain: "proxy.xray.com",
+			Domain: &geodata.DomainRule{Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Full, Value: "proxy.xray.com"}}},
 			Ip: [][]byte{
 				{1, 2, 3, 4},
 				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1},
@@ -29,20 +32,17 @@ func TestStaticHosts(t *testing.T) {
 			ProxiedDomain: "another-proxy.xray.com",
 		},
 		{
-			Type:          DomainMatchingType_Full,
-			Domain:        "proxy2.xray.com",
+			Domain:        &geodata.DomainRule{Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Full, Value: "proxy2.xray.com"}}},
 			ProxiedDomain: "proxy.xray.com",
 		},
 		{
-			Type:   DomainMatchingType_Subdomain,
-			Domain: "example.cn",
+			Domain: &geodata.DomainRule{Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Domain, Value: "example.cn"}}},
 			Ip: [][]byte{
 				{2, 2, 2, 2},
 			},
 		},
 		{
-			Type:   DomainMatchingType_Subdomain,
-			Domain: "baidu.com",
+			Domain: &geodata.DomainRule{Value: &geodata.DomainRule_Custom{Custom: &geodata.Domain{Type: geodata.Domain_Domain, Value: "baidu.com"}}},
 			Ip: [][]byte{
 				{127, 0, 0, 1},
 				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1},
@@ -50,11 +50,18 @@ func TestStaticHosts(t *testing.T) {
 		},
 	}
 
-	hosts, err := NewStaticHosts(pb, nil)
+	hosts, err := NewStaticHosts(pb)
 	common.Must(err)
 
 	{
-		ips := hosts.Lookup("example.com", dns.IPOption{
+		_, err := hosts.Lookup("example.com.lan", dns.IPOption{})
+		if dns.RCodeFromError(err) != 3 {
+			t.Error(err)
+		}
+	}
+
+	{
+		ips, _ := hosts.Lookup("example.com", dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 		})
@@ -67,7 +74,7 @@ func TestStaticHosts(t *testing.T) {
 	}
 
 	{
-		domain := hosts.Lookup("proxy.xray.com", dns.IPOption{
+		domain, _ := hosts.Lookup("proxy.xray.com", dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: false,
 		})
@@ -80,7 +87,7 @@ func TestStaticHosts(t *testing.T) {
 	}
 
 	{
-		domain := hosts.Lookup("proxy2.xray.com", dns.IPOption{
+		domain, _ := hosts.Lookup("proxy2.xray.com", dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: false,
 		})
@@ -93,7 +100,7 @@ func TestStaticHosts(t *testing.T) {
 	}
 
 	{
-		ips := hosts.Lookup("www.example.cn", dns.IPOption{
+		ips, _ := hosts.Lookup("www.example.cn", dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 		})
@@ -106,7 +113,7 @@ func TestStaticHosts(t *testing.T) {
 	}
 
 	{
-		ips := hosts.Lookup("baidu.com", dns.IPOption{
+		ips, _ := hosts.Lookup("baidu.com", dns.IPOption{
 			IPv4Enable: false,
 			IPv6Enable: true,
 		})

app/dns/nameserver.go

@@ -6,10 +6,11 @@ import (
 	"strings"
 	"time"
 
-	"github.com/xtls/xray-core/app/router"
 	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/common/geodata"
 	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/common/strmatcher"
+	"github.com/xtls/xray-core/common/session"
+	"github.com/xtls/xray-core/common/utils"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/dns"
 	"github.com/xtls/xray-core/features/routing"
@@ -19,23 +20,31 @@ import (
 type Server interface {
 	// Name of the Client.
 	Name() string
+
+	IsDisableCache() bool
+
 	// QueryIP sends IP queries to its configured server.
-	QueryIP(ctx context.Context, domain string, clientIP net.IP, option dns.IPOption, disableCache bool) ([]net.IP, error)
+	QueryIP(ctx context.Context, domain string, option dns.IPOption) ([]net.IP, uint32, error)
 }
 
 // Client is the interface for DNS client.
 type Client struct {
-	server       Server
-	clientIP     net.IP
-	skipFallback bool
-	domains      []string
-	expectIPs    []*router.GeoIPMatcher
+	server        Server
+	skipFallback  bool
+	expectedIPs   geodata.IPMatcher
+	unexpectedIPs geodata.IPMatcher
+	actPrior      bool
+	actUnprior    bool
+	tag           string
+	timeoutMs     time.Duration
+	finalQuery    bool
+	ipOption      *dns.IPOption
+	checkSystem   bool
+	policyID      uint32
 }
 
-var errExpectedIPNonMatch = errors.New("expectIPs not match")
-
 // NewServer creates a name server object according to the network destination url.
-func NewServer(dest net.Destination, dispatcher routing.Dispatcher, queryStrategy QueryStrategy) (Server, error) {
+func NewServer(ctx context.Context, dest net.Destination, dispatcher routing.Dispatcher, disableCache bool, serveStale bool, serveExpiredTTL uint32, clientIP net.IP) (Server, error) {
 	if address := dest.Address; address.Family().IsDomain() {
 		u, err := url.Parse(address.Domain())
 		if err != nil {
@@ -44,25 +53,36 @@ func NewServer(dest net.Destination, dispatcher routing.Dispatcher, queryStrateg
 		switch {
 		case strings.EqualFold(u.String(), "localhost"):
 			return NewLocalNameServer(), nil
-		case strings.EqualFold(u.Scheme, "https"): // DOH Remote mode
-			return NewDoHNameServer(u, dispatcher, queryStrategy)
-		case strings.EqualFold(u.Scheme, "https+local"): // DOH Local mode
-			return NewDoHLocalNameServer(u, queryStrategy), nil
+		case strings.EqualFold(u.Scheme, "https"): // DNS-over-HTTPS Remote mode
+			return NewDoHNameServer(u, dispatcher, false, disableCache, serveStale, serveExpiredTTL, clientIP), nil
+		case strings.EqualFold(u.Scheme, "h2c"): // DNS-over-HTTPS h2c Remote mode
+			return NewDoHNameServer(u, dispatcher, true, disableCache, serveStale, serveExpiredTTL, clientIP), nil
+		case strings.EqualFold(u.Scheme, "https+local"): // DNS-over-HTTPS Local mode
+			return NewDoHNameServer(u, nil, false, disableCache, serveStale, serveExpiredTTL, clientIP), nil
+		case strings.EqualFold(u.Scheme, "h2c+local"): // DNS-over-HTTPS h2c Local mode
+			return NewDoHNameServer(u, nil, true, disableCache, serveStale, serveExpiredTTL, clientIP), nil
 		case strings.EqualFold(u.Scheme, "quic+local"): // DNS-over-QUIC Local mode
-			return NewQUICNameServer(u, queryStrategy)
+			return NewQUICNameServer(u, disableCache, serveStale, serveExpiredTTL, clientIP)
 		case strings.EqualFold(u.Scheme, "tcp"): // DNS-over-TCP Remote mode
-			return NewTCPNameServer(u, dispatcher, queryStrategy)
+			return NewTCPNameServer(u, dispatcher, disableCache, serveStale, serveExpiredTTL, clientIP)
 		case strings.EqualFold(u.Scheme, "tcp+local"): // DNS-over-TCP Local mode
-			return NewTCPLocalNameServer(u, queryStrategy)
+			return NewTCPLocalNameServer(u, disableCache, serveStale, serveExpiredTTL, clientIP)
 		case strings.EqualFold(u.String(), "fakedns"):
-			return NewFakeDNSServer(), nil
+			var fd dns.FakeDNSEngine
+			err = core.RequireFeatures(ctx, func(fdns dns.FakeDNSEngine) {
+				fd = fdns
+			})
+			if err != nil {
+				return nil, err
+			}
+			return NewFakeDNSServer(fd), nil
 		}
 	}
 	if dest.Network == net.Network_Unknown {
 		dest.Network = net.Network_UDP
 	}
 	if dest.Network == net.Network_UDP { // UDP classic DNS mode
-		return NewClassicNameServer(dest, dispatcher), nil
+		return NewClassicNameServer(dest, dispatcher, disableCache, serveStale, serveExpiredTTL, clientIP), nil
 	}
 	return nil, errors.New("No available name server could be created from ", dest).AtWarning()
 }
@@ -72,76 +92,38 @@ func NewClient(
 	ctx context.Context,
 	ns *NameServer,
 	clientIP net.IP,
-	container router.GeoIPMatcherContainer,
-	matcherInfos *[]*DomainMatcherInfo,
-	updateDomainRule func(strmatcher.Matcher, int, []*DomainMatcherInfo) error,
+	disableCache bool, serveStale bool, serveExpiredTTL uint32,
+	tag string,
+	ipOption dns.IPOption,
+	updateRules func(bool),
 ) (*Client, error) {
 	client := &Client{}
-
 	err := core.RequireFeatures(ctx, func(dispatcher routing.Dispatcher) error {
 		// Create a new server for each client for now
-		server, err := NewServer(ns.Address.AsDestination(), dispatcher, ns.GetQueryStrategy())
+		server, err := NewServer(ctx, ns.Address.AsDestination(), dispatcher, disableCache, serveStale, serveExpiredTTL, clientIP)
 		if err != nil {
 			return errors.New("failed to create nameserver").Base(err).AtWarning()
 		}
 
-		// Priotize local domains with specific TLDs or without any dot to local DNS
-		if _, isLocalDNS := server.(*LocalNameServer); isLocalDNS {
-			ns.PrioritizedDomain = append(ns.PrioritizedDomain, localTLDsAndDotlessDomains...)
-			ns.OriginalRules = append(ns.OriginalRules, localTLDsAndDotlessDomainsRule)
-			// The following lines is a solution to avoid core panics（rule index out of range） when setting `localhost` DNS client in config.
-			// Because the `localhost` DNS client will apend len(localTLDsAndDotlessDomains) rules into matcherInfos to match `geosite:private` default rule.
-			// But `matcherInfos` has no enough length to add rules, which leads to core panics (rule index out of range).
-			// To avoid this, the length of `matcherInfos` must be equal to the expected, so manually append it with Golang default zero value first for later modification.
-			// Related issues:
-			// https://github.com/v2fly/v2ray-core/issues/529
-			// https://github.com/v2fly/v2ray-core/issues/719
-			for i := 0; i < len(localTLDsAndDotlessDomains); i++ {
-				*matcherInfos = append(*matcherInfos, &DomainMatcherInfo{
-					clientIdx:     uint16(0),
-					domainRuleIdx: uint16(0),
-				})
-			}
-		}
-
-		// Establish domain rules
-		var rules []string
-		ruleCurr := 0
-		ruleIter := 0
-		for _, domain := range ns.PrioritizedDomain {
-			domainRule, err := toStrMatcher(domain.Type, domain.Domain)
-			if err != nil {
-				return errors.New("failed to create prioritized domain").Base(err).AtWarning()
-			}
-			originalRuleIdx := ruleCurr
-			if ruleCurr < len(ns.OriginalRules) {
-				rule := ns.OriginalRules[ruleCurr]
-				if ruleCurr >= len(rules) {
-					rules = append(rules, rule.Rule)
-				}
-				ruleIter++
-				if ruleIter >= int(rule.Size) {
-					ruleIter = 0
-					ruleCurr++
-				}
-			} else { // No original rule, generate one according to current domain matcher (majorly for compatibility with tests)
-				rules = append(rules, domainRule.String())
-				ruleCurr++
-			}
-			err = updateDomainRule(domainRule, originalRuleIdx, *matcherInfos)
-			if err != nil {
-				return errors.New("failed to create prioritized domain").Base(err).AtWarning()
-			}
-		}
+		_, isLocalDNS := server.(*LocalNameServer)
+		updateRules(isLocalDNS)
 
 		// Establish expected IPs
-		var matchers []*router.GeoIPMatcher
-		for _, geoip := range ns.Geoip {
-			matcher, err := container.Add(geoip)
+		var expectedMatcher geodata.IPMatcher
+		if len(ns.ExpectedIp) > 0 {
+			expectedMatcher, err = geodata.IPReg.BuildIPMatcher(ns.ExpectedIp)
 			if err != nil {
-				return errors.New("failed to create ip matcher").Base(err).AtWarning()
+				return errors.New("failed to create expected ip matcher").Base(err).AtWarning()
+			}
+		}
+
+		// Establish unexpected IPs
+		var unexpectedMatcher geodata.IPMatcher
+		if len(ns.UnexpectedIp) > 0 {
+			unexpectedMatcher, err = geodata.IPReg.BuildIPMatcher(ns.UnexpectedIp)
+			if err != nil {
+				return errors.New("failed to create unexpected ip matcher").Base(err).AtWarning()
 			}
-			matchers = append(matchers, matcher)
 		}
 
 		if len(clientIP) > 0 {
@@ -149,87 +131,108 @@ func NewClient(
 			case *net.IPOrDomain_Domain:
 				errors.LogInfo(ctx, "DNS: client ", ns.Address.Address.GetDomain(), " uses clientIP ", clientIP.String())
 			case *net.IPOrDomain_Ip:
-				errors.LogInfo(ctx, "DNS: client ", ns.Address.Address.GetIp(), " uses clientIP ", clientIP.String())
+				errors.LogInfo(ctx, "DNS: client ", net.IP(ns.Address.Address.GetIp()), " uses clientIP ", clientIP.String())
 			}
 		}
 
+		timeoutMs := 4000 * time.Millisecond
+		if ns.TimeoutMs > 0 {
+			timeoutMs = time.Duration(ns.TimeoutMs) * time.Millisecond
+		}
+
+		checkSystem := ns.QueryStrategy == QueryStrategy_USE_SYS
+
 		client.server = server
-		client.clientIP = clientIP
 		client.skipFallback = ns.SkipFallback
-		client.domains = rules
-		client.expectIPs = matchers
+		client.expectedIPs = expectedMatcher
+		client.unexpectedIPs = unexpectedMatcher
+		client.actPrior = ns.ActPrior
+		client.actUnprior = ns.ActUnprior
+		client.tag = tag
+		client.timeoutMs = timeoutMs
+		client.finalQuery = ns.FinalQuery
+		client.ipOption = &ipOption
+		client.checkSystem = checkSystem
+		client.policyID = ns.PolicyID
 		return nil
 	})
 	return client, err
 }
 
-// NewSimpleClient creates a DNS client with a simple destination.
-func NewSimpleClient(ctx context.Context, endpoint *net.Endpoint, clientIP net.IP) (*Client, error) {
-	client := &Client{}
-	err := core.RequireFeatures(ctx, func(dispatcher routing.Dispatcher) error {
-		server, err := NewServer(endpoint.AsDestination(), dispatcher, QueryStrategy_USE_IP)
-		if err != nil {
-			return errors.New("failed to create nameserver").Base(err).AtWarning()
-		}
-		client.server = server
-		client.clientIP = clientIP
-		return nil
-	})
-
-	if len(clientIP) > 0 {
-		switch endpoint.Address.GetAddress().(type) {
-		case *net.IPOrDomain_Domain:
-			errors.LogInfo(ctx, "DNS: client ", endpoint.Address.GetDomain(), " uses clientIP ", clientIP.String())
-		case *net.IPOrDomain_Ip:
-			errors.LogInfo(ctx, "DNS: client ", endpoint.Address.GetIp(), " uses clientIP ", clientIP.String())
-		}
-	}
-
-	return client, err
-}
-
 // Name returns the server name the client manages.
 func (c *Client) Name() string {
 	return c.server.Name()
 }
 
 // QueryIP sends DNS query to the name server with the client's IP.
-func (c *Client) QueryIP(ctx context.Context, domain string, option dns.IPOption, disableCache bool) ([]net.IP, error) {
-	ctx, cancel := context.WithTimeout(ctx, 4*time.Second)
-	ips, err := c.server.QueryIP(ctx, domain, c.clientIP, option, disableCache)
+func (c *Client) QueryIP(ctx context.Context, domain string, option dns.IPOption) ([]net.IP, uint32, error) {
+	if c.checkSystem {
+		supportIPv4, supportIPv6 := utils.CheckRoutes()
+		option.IPv4Enable = option.IPv4Enable && supportIPv4
+		option.IPv6Enable = option.IPv6Enable && supportIPv6
+	} else {
+		option.IPv4Enable = option.IPv4Enable && c.ipOption.IPv4Enable
+		option.IPv6Enable = option.IPv6Enable && c.ipOption.IPv6Enable
+	}
+
+	if !option.IPv4Enable && !option.IPv6Enable {
+		return nil, 0, dns.ErrEmptyResponse
+	}
+
+	ctx, cancel := context.WithTimeout(ctx, c.timeoutMs)
+	ctx = session.ContextWithInbound(ctx, &session.Inbound{Tag: c.tag})
+	ips, ttl, err := c.server.QueryIP(ctx, domain, option)
 	cancel()
 
 	if err != nil {
-		return ips, err
+		return nil, 0, err
 	}
-	return c.MatchExpectedIPs(domain, ips)
-}
 
-// MatchExpectedIPs matches queried domain IPs with expected IPs and returns matched ones.
-func (c *Client) MatchExpectedIPs(domain string, ips []net.IP) ([]net.IP, error) {
-	if len(c.expectIPs) == 0 {
-		return ips, nil
+	if len(ips) == 0 {
+		return nil, 0, dns.ErrEmptyResponse
 	}
-	newIps := []net.IP{}
-	for _, ip := range ips {
-		for _, matcher := range c.expectIPs {
-			if matcher.Match(ip) {
-				newIps = append(newIps, ip)
-				break
-			}
+
+	if c.expectedIPs != nil && !c.actPrior {
+		ips, _ = c.expectedIPs.FilterIPs(ips)
+		errors.LogDebug(context.Background(), "domain ", domain, " expectedIPs ", ips, " matched at server ", c.Name())
+		if len(ips) == 0 {
+			return nil, 0, dns.ErrEmptyResponse
 		}
 	}
-	if len(newIps) == 0 {
-		return nil, errExpectedIPNonMatch
+
+	if c.unexpectedIPs != nil && !c.actUnprior {
+		_, ips = c.unexpectedIPs.FilterIPs(ips)
+		errors.LogDebug(context.Background(), "domain ", domain, " unexpectedIPs ", ips, " matched at server ", c.Name())
+		if len(ips) == 0 {
+			return nil, 0, dns.ErrEmptyResponse
+		}
 	}
-	errors.LogDebug(context.Background(), "domain ", domain, " expectIPs ", newIps, " matched at server ", c.Name())
-	return newIps, nil
+
+	if c.expectedIPs != nil && c.actPrior {
+		ipsNew, _ := c.expectedIPs.FilterIPs(ips)
+		if len(ipsNew) > 0 {
+			ips = ipsNew
+			errors.LogDebug(context.Background(), "domain ", domain, " priorIPs ", ips, " matched at server ", c.Name())
+		}
+	}
+
+	if c.unexpectedIPs != nil && c.actUnprior {
+		_, ipsNew := c.unexpectedIPs.FilterIPs(ips)
+		if len(ipsNew) > 0 {
+			ips = ipsNew
+			errors.LogDebug(context.Background(), "domain ", domain, " unpriorIPs ", ips, " matched at server ", c.Name())
+		}
+	}
+
+	return ips, ttl, nil
 }
 
 func ResolveIpOptionOverride(queryStrategy QueryStrategy, ipOption dns.IPOption) dns.IPOption {
 	switch queryStrategy {
 	case QueryStrategy_USE_IP:
 		return ipOption
+	case QueryStrategy_USE_SYS:
+		return ipOption
 	case QueryStrategy_USE_IP4:
 		return dns.IPOption{
 			IPv4Enable: ipOption.IPv4Enable,

app/dns/nameserver_cached.go

@@ -0,0 +1,173 @@
+package dns
+
+import (
+	"context"
+	go_errors "errors"
+	"time"
+
+	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/common/log"
+	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/common/signal/pubsub"
+	"github.com/xtls/xray-core/features/dns"
+)
+
+type CachedNameserver interface {
+	getCacheController() *CacheController
+
+	sendQuery(ctx context.Context, noResponseErrCh chan<- error, fqdn string, option dns.IPOption)
+}
+
+// queryIP is called from dns.Server->queryIPTimeout
+func queryIP(ctx context.Context, s CachedNameserver, domain string, option dns.IPOption) ([]net.IP, uint32, error) {
+	fqdn := Fqdn(domain)
+
+	cache := s.getCacheController()
+	if !cache.disableCache {
+		if rec := cache.findRecords(fqdn); rec != nil {
+			ips, ttl, err := merge(option, rec.A, rec.AAAA)
+			if !go_errors.Is(err, errRecordNotFound) {
+				if ttl > 0 {
+					errors.LogDebugInner(ctx, err, cache.name, " cache HIT ", fqdn, " -> ", ips)
+					log.Record(&log.DNSLog{Server: cache.name, Domain: fqdn, Result: ips, Status: log.DNSCacheHit, Elapsed: 0, Error: err})
+					return ips, uint32(ttl), err
+				}
+				if cache.serveStale && (cache.serveExpiredTTL == 0 || cache.serveExpiredTTL < ttl) {
+					errors.LogDebugInner(ctx, err, cache.name, " cache OPTIMISTE ", fqdn, " -> ", ips)
+					log.Record(&log.DNSLog{Server: cache.name, Domain: fqdn, Result: ips, Status: log.DNSCacheOptimiste, Elapsed: 0, Error: err})
+					go pull(ctx, s, fqdn, option)
+					return ips, 1, err
+				}
+			}
+		}
+	} else {
+		errors.LogDebug(ctx, "DNS cache is disabled. Querying IP for ", fqdn, " at ", cache.name)
+	}
+
+	return fetch(ctx, s, fqdn, option)
+}
+
+func pull(ctx context.Context, s CachedNameserver, fqdn string, option dns.IPOption) {
+	nctx, cancel := context.WithTimeout(context.WithoutCancel(ctx), 8*time.Second)
+	defer cancel()
+
+	fetch(nctx, s, fqdn, option)
+}
+
+func fetch(ctx context.Context, s CachedNameserver, fqdn string, option dns.IPOption) ([]net.IP, uint32, error) {
+	key := fqdn
+	switch {
+	case option.IPv4Enable && option.IPv6Enable:
+		key = key + "46"
+	case option.IPv4Enable:
+		key = key + "4"
+	case option.IPv6Enable:
+		key = key + "6"
+	}
+
+	v, _, _ := s.getCacheController().requestGroup.Do(key, func() (any, error) {
+		return doFetch(ctx, s, fqdn, option), nil
+	})
+	ret := v.(result)
+
+	return ret.ips, ret.ttl, ret.error
+}
+
+type result struct {
+	ips []net.IP
+	ttl uint32
+	error
+}
+
+func doFetch(ctx context.Context, s CachedNameserver, fqdn string, option dns.IPOption) result {
+	sub4, sub6 := s.getCacheController().registerSubscribers(fqdn, option)
+	defer closeSubscribers(sub4, sub6)
+
+	noResponseErrCh := make(chan error, 2)
+	onEvent := func(sub *pubsub.Subscriber) (*IPRecord, error) {
+		if sub == nil {
+			return nil, nil
+		}
+		select {
+		case <-ctx.Done():
+			return nil, ctx.Err()
+		case err := <-noResponseErrCh:
+			return nil, err
+		case msg := <-sub.Wait():
+			sub.Close()
+			return msg.(*IPRecord), nil // should panic
+		}
+	}
+
+	start := time.Now()
+	s.sendQuery(ctx, noResponseErrCh, fqdn, option)
+
+	rec4, err4 := onEvent(sub4)
+	rec6, err6 := onEvent(sub6)
+
+	var errs []error
+	if err4 != nil {
+		errs = append(errs, err4)
+	}
+	if err6 != nil {
+		errs = append(errs, err6)
+	}
+
+	ips, ttl, err := merge(option, rec4, rec6, errs...)
+	var rTTL uint32
+	if ttl > 0 {
+		rTTL = uint32(ttl)
+	} else if ttl == 0 && go_errors.Is(err, errRecordNotFound) {
+		rTTL = 0
+	} else { // edge case: where a fast rep's ttl expires during the rtt of a slower, parallel query
+		rTTL = 1
+	}
+
+	log.Record(&log.DNSLog{Server: s.getCacheController().name, Domain: fqdn, Result: ips, Status: log.DNSQueried, Elapsed: time.Since(start), Error: err})
+	return result{ips, rTTL, err}
+}
+
+func merge(option dns.IPOption, rec4 *IPRecord, rec6 *IPRecord, errs ...error) ([]net.IP, int32, error) {
+	var allIPs []net.IP
+	var rTTL int32 = dns.DefaultTTL
+
+	mergeReq := option.IPv4Enable && option.IPv6Enable
+
+	if option.IPv4Enable {
+		ips, ttl, err := rec4.getIPs() // it's safe
+		if !mergeReq || go_errors.Is(err, errRecordNotFound) {
+			return ips, ttl, err
+		}
+		if ttl < rTTL {
+			rTTL = ttl
+		}
+		if len(ips) > 0 {
+			allIPs = append(allIPs, ips...)
+		} else {
+			errs = append(errs, err)
+		}
+	}
+
+	if option.IPv6Enable {
+		ips, ttl, err := rec6.getIPs() // it's safe
+		if !mergeReq || go_errors.Is(err, errRecordNotFound) {
+			return ips, ttl, err
+		}
+		if ttl < rTTL {
+			rTTL = ttl
+		}
+		if len(ips) > 0 {
+			allIPs = append(allIPs, ips...)
+		} else {
+			errs = append(errs, err)
+		}
+	}
+
+	if len(allIPs) > 0 {
+		return allIPs, rTTL, nil
+	}
+	if len(errs) == 2 && go_errors.Is(errs[0], errs[1]) {
+		return nil, rTTL, errs[0]
+	}
+	return nil, rTTL, errors.Combine(errs...)
+}

app/dns/nameserver_doh.go

@@ -3,237 +3,166 @@ package dns
 import (
 	"bytes"
 	"context"
+	"crypto/tls"
 	"fmt"
 	"io"
 	"net/http"
 	"net/url"
-	"sync"
-	"sync/atomic"
 	"time"
 
+	utls "github.com/refraction-networking/utls"
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/crypto"
 	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/log"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/net/cnc"
 	"github.com/xtls/xray-core/common/protocol/dns"
 	"github.com/xtls/xray-core/common/session"
-	"github.com/xtls/xray-core/common/signal/pubsub"
-	"github.com/xtls/xray-core/common/task"
+	"github.com/xtls/xray-core/common/utils"
 	dns_feature "github.com/xtls/xray-core/features/dns"
 	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/transport/internet"
-	"golang.org/x/net/dns/dnsmessage"
+	"golang.org/x/net/http2"
 )
 
 // DoHNameServer implemented DNS over HTTPS (RFC8484) Wire Format,
 // which is compatible with traditional dns over udp(RFC1035),
 // thus most of the DOH implementation is copied from udpns.go
 type DoHNameServer struct {
-	dispatcher routing.Dispatcher
-	sync.RWMutex
-	ips           map[string]*record
-	pub           *pubsub.Service
-	cleanup       *task.Periodic
-	reqID         uint32
-	httpClient    *http.Client
-	dohURL        string
-	name          string
-	queryStrategy QueryStrategy
+	cacheController *CacheController
+	httpClient      *http.Client
+	dohURL          string
+	clientIP        net.IP
 }
 
-// NewDoHNameServer creates DOH server object for remote resolving.
-func NewDoHNameServer(url *url.URL, dispatcher routing.Dispatcher, queryStrategy QueryStrategy) (*DoHNameServer, error) {
-	errors.LogInfo(context.Background(), "DNS: created Remote DOH client for ", url.String())
-	s := baseDOHNameServer(url, "DOH", queryStrategy)
-
-	s.dispatcher = dispatcher
-	tr := &http.Transport{
-		MaxIdleConns:        30,
-		IdleConnTimeout:     90 * time.Second,
-		TLSHandshakeTimeout: 30 * time.Second,
-		ForceAttemptHTTP2:   true,
-		DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
-			dest, err := net.ParseDestination(network + ":" + addr)
-			if err != nil {
-				return nil, err
-			}
-			link, err := s.dispatcher.Dispatch(toDnsContext(ctx, s.dohURL), dest)
-			select {
-			case <-ctx.Done():
-				return nil, ctx.Err()
-			default:
-
-			}
-			if err != nil {
-				return nil, err
-			}
-
-			cc := common.ChainedClosable{}
-			if cw, ok := link.Writer.(common.Closable); ok {
-				cc = append(cc, cw)
-			}
-			if cr, ok := link.Reader.(common.Closable); ok {
-				cc = append(cc, cr)
-			}
-			return cnc.NewConnection(
-				cnc.ConnectionInputMulti(link.Writer),
-				cnc.ConnectionOutputMulti(link.Reader),
-				cnc.ConnectionOnClose(cc),
-			), nil
-		},
-	}
-	s.httpClient = &http.Client{
-		Timeout:   time.Second * 180,
-		Transport: tr,
-	}
-
-	return s, nil
-}
-
-// NewDoHLocalNameServer creates DOH client object for local resolving
-func NewDoHLocalNameServer(url *url.URL, queryStrategy QueryStrategy) *DoHNameServer {
+// NewDoHNameServer creates DOH/DOHL client object for remote/local resolving.
+func NewDoHNameServer(url *url.URL, dispatcher routing.Dispatcher, h2c bool, disableCache bool, serveStale bool, serveExpiredTTL uint32, clientIP net.IP) *DoHNameServer {
 	url.Scheme = "https"
-	s := baseDOHNameServer(url, "DOHL", queryStrategy)
-	tr := &http.Transport{
-		IdleConnTimeout:   90 * time.Second,
-		ForceAttemptHTTP2: true,
-		DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
-			dest, err := net.ParseDestination(network + ":" + addr)
-			if err != nil {
-				return nil, err
-			}
-			conn, err := internet.DialSystem(ctx, dest, nil)
-			log.Record(&log.AccessMessage{
-				From:   "DNS",
-				To:     s.dohURL,
-				Status: log.AccessAccepted,
-				Detour: "local",
-			})
-			if err != nil {
-				return nil, err
-			}
-			return conn, nil
-		},
+	mode := "DOH"
+	if dispatcher == nil {
+		mode = "DOHL"
+	}
+	errors.LogInfo(context.Background(), "DNS: created ", mode, " client for ", url.String(), ", with h2c ", h2c)
+	s := &DoHNameServer{
+		cacheController: NewCacheController(mode+"//"+url.Host, disableCache, serveStale, serveExpiredTTL),
+		dohURL:          url.String(),
+		clientIP:        clientIP,
 	}
 	s.httpClient = &http.Client{
-		Timeout:   time.Second * 180,
-		Transport: tr,
-	}
-	errors.LogInfo(context.Background(), "DNS: created Local DOH client for ", url.String())
-	return s
-}
-
-func baseDOHNameServer(url *url.URL, prefix string, queryStrategy QueryStrategy) *DoHNameServer {
-	s := &DoHNameServer{
-		ips:           make(map[string]*record),
-		pub:           pubsub.NewService(),
-		name:          prefix + "//" + url.Host,
-		dohURL:        url.String(),
-		queryStrategy: queryStrategy,
-	}
-	s.cleanup = &task.Periodic{
-		Interval: time.Minute,
-		Execute:  s.Cleanup,
+		Transport: &http2.Transport{
+			IdleConnTimeout: net.ConnIdleTimeout,
+			ReadIdleTimeout: net.ChromeH2KeepAlivePeriod,
+			DialTLSContext: func(ctx context.Context, network, addr string, cfg *tls.Config) (net.Conn, error) {
+				dest, err := net.ParseDestination(network + ":" + addr)
+				if err != nil {
+					return nil, err
+				}
+				var conn net.Conn
+				if dispatcher != nil {
+					dnsCtx := toDnsContext(ctx, s.dohURL)
+					if h2c {
+						dnsCtx = session.ContextWithMitmAlpn11(dnsCtx, false) // for insurance
+						dnsCtx = session.ContextWithMitmServerName(dnsCtx, url.Hostname())
+					}
+					link, err := dispatcher.Dispatch(dnsCtx, dest)
+					select {
+					case <-ctx.Done():
+						return nil, ctx.Err()
+					default:
+					}
+					if err != nil {
+						return nil, err
+					}
+					cc := common.ChainedClosable{}
+					if cw, ok := link.Writer.(common.Closable); ok {
+						cc = append(cc, cw)
+					}
+					if cr, ok := link.Reader.(common.Closable); ok {
+						cc = append(cc, cr)
+					}
+					conn = cnc.NewConnection(
+						cnc.ConnectionInputMulti(link.Writer),
+						cnc.ConnectionOutputMulti(link.Reader),
+						cnc.ConnectionOnClose(cc),
+					)
+				} else {
+					log.Record(&log.AccessMessage{
+						From:   "DNS",
+						To:     s.dohURL,
+						Status: log.AccessAccepted,
+						Detour: "local",
+					})
+					conn, err = internet.DialSystem(ctx, dest, nil)
+					if err != nil {
+						return nil, err
+					}
+				}
+				if !h2c {
+					conn = utls.UClient(conn, &utls.Config{ServerName: url.Hostname()}, utls.HelloChrome_Auto)
+					if err := conn.(*utls.UConn).HandshakeContext(ctx); err != nil {
+						return nil, err
+					}
+				}
+				return conn, nil
+			},
+		},
 	}
 	return s
 }
 
 // Name implements Server.
 func (s *DoHNameServer) Name() string {
-	return s.name
+	return s.cacheController.name
 }
 
-// Cleanup clears expired items from cache
-func (s *DoHNameServer) Cleanup() error {
-	now := time.Now()
-	s.Lock()
-	defer s.Unlock()
-
-	if len(s.ips) == 0 {
-		return errors.New("nothing to do. stopping...")
-	}
-
-	for domain, record := range s.ips {
-		if record.A != nil && record.A.Expire.Before(now) {
-			record.A = nil
-		}
-		if record.AAAA != nil && record.AAAA.Expire.Before(now) {
-			record.AAAA = nil
-		}
-
-		if record.A == nil && record.AAAA == nil {
-			errors.LogDebug(context.Background(), s.name, " cleanup ", domain)
-			delete(s.ips, domain)
-		} else {
-			s.ips[domain] = record
-		}
-	}
-
-	if len(s.ips) == 0 {
-		s.ips = make(map[string]*record)
-	}
-
-	return nil
-}
-
-func (s *DoHNameServer) updateIP(req *dnsRequest, ipRec *IPRecord) {
-	elapsed := time.Since(req.start)
-
-	s.Lock()
-	rec, found := s.ips[req.domain]
-	if !found {
-		rec = &record{}
-	}
-	updated := false
-
-	switch req.reqType {
-	case dnsmessage.TypeA:
-		if isNewer(rec.A, ipRec) {
-			rec.A = ipRec
-			updated = true
-		}
-	case dnsmessage.TypeAAAA:
-		addr := make([]net.Address, 0, len(ipRec.IP))
-		for _, ip := range ipRec.IP {
-			if len(ip.IP()) == net.IPv6len {
-				addr = append(addr, ip)
-			}
-		}
-		ipRec.IP = addr
-		if isNewer(rec.AAAA, ipRec) {
-			rec.AAAA = ipRec
-			updated = true
-		}
-	}
-	errors.LogInfo(context.Background(), s.name, " got answer: ", req.domain, " ", req.reqType, " -> ", ipRec.IP, " ", elapsed)
-
-	if updated {
-		s.ips[req.domain] = rec
-	}
-	switch req.reqType {
-	case dnsmessage.TypeA:
-		s.pub.Publish(req.domain+"4", nil)
-	case dnsmessage.TypeAAAA:
-		s.pub.Publish(req.domain+"6", nil)
-	}
-	s.Unlock()
-	common.Must(s.cleanup.Start())
+// IsDisableCache implements Server.
+func (s *DoHNameServer) IsDisableCache() bool {
+	return s.cacheController.disableCache
 }
 
 func (s *DoHNameServer) newReqID() uint16 {
-	return uint16(atomic.AddUint32(&s.reqID, 1))
+	return 0
 }
 
-func (s *DoHNameServer) sendQuery(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption) {
-	errors.LogInfo(ctx, s.name, " querying: ", domain)
+// getCacheController implements CachedNameserver.
+func (s *DoHNameServer) getCacheController() *CacheController {
+	return s.cacheController
+}
 
-	if s.name+"." == "DOH//"+domain {
-		errors.LogError(ctx, s.name, " tries to resolve itself! Use IP or set \"hosts\" instead.")
+// sendQuery implements CachedNameserver.
+func (s *DoHNameServer) sendQuery(ctx context.Context, noResponseErrCh chan<- error, fqdn string, option dns_feature.IPOption) {
+	errors.LogInfo(ctx, s.Name(), " querying: ", fqdn)
+
+	if s.Name()+"." == "DOH//"+fqdn {
+		errors.LogError(ctx, s.Name(), " tries to resolve itself! Use IP or set \"hosts\" instead")
+		if noResponseErrCh != nil {
+			err := errors.New("tries to resolve itself!", s.Name())
+			if option.IPv4Enable {
+				noResponseErrCh <- err
+			}
+			if option.IPv6Enable {
+				noResponseErrCh <- err
+			}
+		}
 		return
 	}
 
-	reqs := buildReqMsgs(domain, option, s.newReqID, genEDNS0Options(clientIP))
+	// As we don't want our traffic pattern looks like DoH, we use Random-Length Padding instead of Block-Length Padding recommended in RFC 8467
+	// Although DoH server like 1.1.1.1 will pad the response to Block-Length 468, at least it is better than no padding for response at all
+	reqs, err := buildReqMsgs(fqdn, option, s.newReqID, genEDNS0Options(s.clientIP, int(crypto.RandBetween(100, 300))))
+	if err != nil {
+		errors.LogErrorInner(ctx, err, "failed to build dns query for ", fqdn)
+		if noResponseErrCh != nil {
+			if option.IPv4Enable {
+				noResponseErrCh <- err
+			}
+			if option.IPv6Enable {
+				noResponseErrCh <- err
+			}
+		}
+		return
+	}
 
 	var deadline time.Time
 	if d, ok := ctx.Deadline(); ok {
@@ -259,7 +188,7 @@ func (s *DoHNameServer) sendQuery(ctx context.Context, domain string, clientIP n
 			})
 
 			// forced to use mux for DOH
-			// dnsCtx = session.ContextWithMuxPrefered(dnsCtx, true)
+			// dnsCtx = session.ContextWithMuxPreferred(dnsCtx, true)
 
 			var cancel context.CancelFunc
 			dnsCtx, cancel = context.WithDeadline(dnsCtx, deadline)
@@ -267,20 +196,29 @@ func (s *DoHNameServer) sendQuery(ctx context.Context, domain string, clientIP n
 
 			b, err := dns.PackMessage(r.msg)
 			if err != nil {
-				errors.LogErrorInner(ctx, err, "failed to pack dns query for ", domain)
+				errors.LogErrorInner(ctx, err, "failed to pack dns query for ", fqdn)
+				if noResponseErrCh != nil {
+					noResponseErrCh <- err
+				}
 				return
 			}
 			resp, err := s.dohHTTPSContext(dnsCtx, b.Bytes())
 			if err != nil {
-				errors.LogErrorInner(ctx, err, "failed to retrieve response for ", domain)
+				errors.LogErrorInner(ctx, err, "failed to retrieve response for ", fqdn)
+				if noResponseErrCh != nil {
+					noResponseErrCh <- err
+				}
 				return
 			}
 			rec, err := parseResponse(resp)
 			if err != nil {
-				errors.LogErrorInner(ctx, err, "failed to handle DOH response for ", domain)
+				errors.LogErrorInner(ctx, err, "failed to handle DOH response for ", fqdn)
+				if noResponseErrCh != nil {
+					noResponseErrCh <- err
+				}
 				return
 			}
-			s.updateIP(r, rec)
+			s.cacheController.updateRecord(r, rec)
 		}(req)
 	}
 }
@@ -294,6 +232,8 @@ func (s *DoHNameServer) dohHTTPSContext(ctx context.Context, b []byte) ([]byte,
 
 	req.Header.Add("Accept", "application/dns-message")
 	req.Header.Add("Content-Type", "application/dns-message")
+	utils.TryDefaultHeadersWith(req.Header, "fetch")
+	req.Header.Set("X-Padding", utils.H2Base62Pad(crypto.RandBetween(100, 1000)))
 
 	hc := s.httpClient
 
@@ -311,107 +251,7 @@ func (s *DoHNameServer) dohHTTPSContext(ctx context.Context, b []byte) ([]byte,
 	return io.ReadAll(resp.Body)
 }
 
-func (s *DoHNameServer) findIPsForDomain(domain string, option dns_feature.IPOption) ([]net.IP, error) {
-	s.RLock()
-	record, found := s.ips[domain]
-	s.RUnlock()
-
-	if !found {
-		return nil, errRecordNotFound
-	}
-
-	var err4 error
-	var err6 error
-	var ips []net.Address
-	var ip6 []net.Address
-
-	if option.IPv4Enable {
-		ips, err4 = record.A.getIPs()
-	}
-
-	if option.IPv6Enable {
-		ip6, err6 = record.AAAA.getIPs()
-		ips = append(ips, ip6...)
-	}
-
-	if len(ips) > 0 {
-		return toNetIP(ips)
-	}
-
-	if err4 != nil {
-		return nil, err4
-	}
-
-	if err6 != nil {
-		return nil, err6
-	}
-
-	if (option.IPv4Enable && record.A != nil) || (option.IPv6Enable && record.AAAA != nil) {
-		return nil, dns_feature.ErrEmptyResponse
-	}
-
-	return nil, errRecordNotFound
-}
-
 // QueryIP implements Server.
-func (s *DoHNameServer) QueryIP(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption, disableCache bool) ([]net.IP, error) { // nolint: dupl
-	fqdn := Fqdn(domain)
-	option = ResolveIpOptionOverride(s.queryStrategy, option)
-	if !option.IPv4Enable && !option.IPv6Enable {
-		return nil, dns_feature.ErrEmptyResponse
-	}
-
-	if disableCache {
-		errors.LogDebug(ctx, "DNS cache is disabled. Querying IP for ", domain, " at ", s.name)
-	} else {
-		ips, err := s.findIPsForDomain(fqdn, option)
-		if err != errRecordNotFound {
-			errors.LogDebugInner(ctx, err, s.name, " cache HIT ", domain, " -> ", ips)
-			log.Record(&log.DNSLog{Server: s.name, Domain: domain, Result: ips, Status: log.DNSCacheHit, Elapsed: 0, Error: err})
-			return ips, err
-		}
-	}
-
-	// ipv4 and ipv6 belong to different subscription groups
-	var sub4, sub6 *pubsub.Subscriber
-	if option.IPv4Enable {
-		sub4 = s.pub.Subscribe(fqdn + "4")
-		defer sub4.Close()
-	}
-	if option.IPv6Enable {
-		sub6 = s.pub.Subscribe(fqdn + "6")
-		defer sub6.Close()
-	}
-	done := make(chan interface{})
-	go func() {
-		if sub4 != nil {
-			select {
-			case <-sub4.Wait():
-			case <-ctx.Done():
-			}
-		}
-		if sub6 != nil {
-			select {
-			case <-sub6.Wait():
-			case <-ctx.Done():
-			}
-		}
-		close(done)
-	}()
-	s.sendQuery(ctx, fqdn, clientIP, option)
-	start := time.Now()
-
-	for {
-		ips, err := s.findIPsForDomain(fqdn, option)
-		if err != errRecordNotFound {
-			log.Record(&log.DNSLog{Server: s.name, Domain: domain, Result: ips, Status: log.DNSQueried, Elapsed: time.Since(start), Error: err})
-			return ips, err
-		}
-
-		select {
-		case <-ctx.Done():
-			return nil, ctx.Err()
-		case <-done:
-		}
-	}
+func (s *DoHNameServer) QueryIP(ctx context.Context, domain string, option dns_feature.IPOption) ([]net.IP, uint32, error) {
+	return queryIP(ctx, s, domain, option)
 }

app/dns/nameserver_doh_test.go

@@ -17,12 +17,12 @@ func TestDOHNameServer(t *testing.T) {
 	url, err := url.Parse("https+local://1.1.1.1/dns-query")
 	common.Must(err)
 
-	s := NewDoHLocalNameServer(url, QueryStrategy_USE_IP)
+	s := NewDoHNameServer(url, nil, false, false, false, 0, net.IP(nil))
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
+	ips, _, err := s.QueryIP(ctx, "google.com", dns_feature.IPOption{
 		IPv4Enable: true,
 		IPv6Enable: true,
-	}, false)
+	})
 	cancel()
 	common.Must(err)
 	if len(ips) == 0 {
@@ -34,12 +34,12 @@ func TestDOHNameServerWithCache(t *testing.T) {
 	url, err := url.Parse("https+local://1.1.1.1/dns-query")
 	common.Must(err)
 
-	s := NewDoHLocalNameServer(url, QueryStrategy_USE_IP)
+	s := NewDoHNameServer(url, nil, false, false, false, 0, net.IP(nil))
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
+	ips, _, err := s.QueryIP(ctx, "google.com", dns_feature.IPOption{
 		IPv4Enable: true,
 		IPv6Enable: true,
-	}, false)
+	})
 	cancel()
 	common.Must(err)
 	if len(ips) == 0 {
@@ -47,10 +47,10 @@ func TestDOHNameServerWithCache(t *testing.T) {
 	}
 
 	ctx2, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips2, err := s.QueryIP(ctx2, "google.com", net.IP(nil), dns_feature.IPOption{
+	ips2, _, err := s.QueryIP(ctx2, "google.com", dns_feature.IPOption{
 		IPv4Enable: true,
 		IPv6Enable: true,
-	}, true)
+	})
 	cancel()
 	common.Must(err)
 	if r := cmp.Diff(ips2, ips); r != "" {
@@ -62,12 +62,12 @@ func TestDOHNameServerWithIPv4Override(t *testing.T) {
 	url, err := url.Parse("https+local://1.1.1.1/dns-query")
 	common.Must(err)
 
-	s := NewDoHLocalNameServer(url, QueryStrategy_USE_IP4)
+	s := NewDoHNameServer(url, nil, false, false, false, 0, net.IP(nil))
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
+	ips, _, err := s.QueryIP(ctx, "google.com", dns_feature.IPOption{
 		IPv4Enable: true,
-		IPv6Enable: true,
-	}, false)
+		IPv6Enable: false,
+	})
 	cancel()
 	common.Must(err)
 	if len(ips) == 0 {
@@ -85,12 +85,12 @@ func TestDOHNameServerWithIPv6Override(t *testing.T) {
 	url, err := url.Parse("https+local://1.1.1.1/dns-query")
 	common.Must(err)
 
-	s := NewDoHLocalNameServer(url, QueryStrategy_USE_IP6)
+	s := NewDoHNameServer(url, nil, false, false, false, 0, net.IP(nil))
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
-		IPv4Enable: true,
+	ips, _, err := s.QueryIP(ctx, "google.com", dns_feature.IPOption{
+		IPv4Enable: false,
 		IPv6Enable: true,
-	}, false)
+	})
 	cancel()
 	common.Must(err)
 	if len(ips) == 0 {

app/dns/nameserver_fakedns.go

@@ -5,7 +5,6 @@ import (
 
 	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/dns"
 )
 
@@ -13,22 +12,24 @@ type FakeDNSServer struct {
 	fakeDNSEngine dns.FakeDNSEngine
 }
 
-func NewFakeDNSServer() *FakeDNSServer {
-	return &FakeDNSServer{}
+func NewFakeDNSServer(fd dns.FakeDNSEngine) *FakeDNSServer {
+	return &FakeDNSServer{fakeDNSEngine: fd}
 }
 
 func (FakeDNSServer) Name() string {
 	return "FakeDNS"
 }
 
-func (f *FakeDNSServer) QueryIP(ctx context.Context, domain string, _ net.IP, opt dns.IPOption, _ bool) ([]net.IP, error) {
+// IsDisableCache implements Server.
+func (s *FakeDNSServer) IsDisableCache() bool {
+	return true
+}
+
+func (f *FakeDNSServer) QueryIP(ctx context.Context, domain string, opt dns.IPOption) ([]net.IP, uint32, error) {
 	if f.fakeDNSEngine == nil {
-		if err := core.RequireFeatures(ctx, func(fd dns.FakeDNSEngine) {
-			f.fakeDNSEngine = fd
-		}); err != nil {
-			return nil, errors.New("Unable to locate a fake DNS Engine").Base(err).AtError()
-		}
+		return nil, 0, errors.New("Unable to locate a fake DNS Engine").AtError()
 	}
+
 	var ips []net.Address
 	if fkr0, ok := f.fakeDNSEngine.(dns.FakeDNSEngineRev0); ok {
 		ips = fkr0.GetFakeIPForDomain3(domain, opt.IPv4Enable, opt.IPv6Enable)
@@ -38,13 +39,13 @@ func (f *FakeDNSServer) QueryIP(ctx context.Context, domain string, _ net.IP, op
 
 	netIP, err := toNetIP(ips)
 	if err != nil {
-		return nil, errors.New("Unable to convert IP to net ip").Base(err).AtError()
+		return nil, 0, errors.New("Unable to convert IP to net ip").Base(err).AtError()
 	}
 
 	errors.LogInfo(ctx, f.Name(), " got answer: ", domain, " -> ", ips)
 
 	if len(netIP) > 0 {
-		return netIP, nil
+		return netIP, 1, nil // fakeIP ttl is 1
 	}
-	return nil, dns.ErrEmptyResponse
+	return nil, 0, dns.ErrEmptyResponse
 }

app/dns/nameserver_local.go

@@ -2,7 +2,6 @@ package dns
 
 import (
 	"context"
-	"strings"
 	"time"
 
 	"github.com/xtls/xray-core/common/errors"
@@ -17,16 +16,10 @@ type LocalNameServer struct {
 	client *localdns.Client
 }
 
-const errEmptyResponse = "No address associated with hostname"
-
 // QueryIP implements Server.
-func (s *LocalNameServer) QueryIP(ctx context.Context, domain string, _ net.IP, option dns.IPOption, _ bool) (ips []net.IP, err error) {
+func (s *LocalNameServer) QueryIP(ctx context.Context, domain string, option dns.IPOption) (ips []net.IP, ttl uint32, err error) {
 	start := time.Now()
-	ips, err = s.client.LookupIP(domain, option)
-
-	if err != nil && strings.HasSuffix(err.Error(), errEmptyResponse) {
-		err = dns.ErrEmptyResponse
-	}
+	ips, ttl, err = s.client.LookupIP(domain, option)
 
 	if len(ips) > 0 {
 		errors.LogInfo(ctx, "Localhost got answer: ", domain, " -> ", ips)
@@ -41,6 +34,11 @@ func (s *LocalNameServer) Name() string {
 	return "localhost"
 }
 
+// IsDisableCache implements Server.
+func (s *LocalNameServer) IsDisableCache() bool {
+	return true
+}
+
 // NewLocalNameServer creates localdns server object for directly lookup in system DNS.
 func NewLocalNameServer() *LocalNameServer {
 	errors.LogInfo(context.Background(), "DNS: created localhost client")
@@ -50,6 +48,6 @@ func NewLocalNameServer() *LocalNameServer {
 }
 
 // NewLocalDNSClient creates localdns client object for directly lookup in system DNS.
-func NewLocalDNSClient() *Client {
-	return &Client{server: NewLocalNameServer()}
+func NewLocalDNSClient(ipOption dns.IPOption) *Client {
+	return &Client{server: NewLocalNameServer(), ipOption: &ipOption}
 }

app/dns/nameserver_local_test.go

@@ -7,18 +7,17 @@ import (
 
 	. "github.com/xtls/xray-core/app/dns"
 	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/features/dns"
 )
 
 func TestLocalNameServer(t *testing.T) {
 	s := NewLocalNameServer()
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second*2)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP{}, dns.IPOption{
+	ips, _, err := s.QueryIP(ctx, "google.com", dns.IPOption{
 		IPv4Enable: true,
 		IPv6Enable: true,
 		FakeEnable: false,
-	}, false)
+	})
 	cancel()
 	common.Must(err)
 	if len(ips) == 0 {

app/dns/nameserver_quic.go

@@ -6,22 +6,17 @@ import (
 	"encoding/binary"
 	"net/url"
 	"sync"
-	"sync/atomic"
 	"time"
 
-	"github.com/quic-go/quic-go"
-	"github.com/xtls/xray-core/common"
+	"github.com/apernet/quic-go"
 	"github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/log"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/protocol/dns"
 	"github.com/xtls/xray-core/common/session"
-	"github.com/xtls/xray-core/common/signal/pubsub"
-	"github.com/xtls/xray-core/common/task"
 	dns_feature "github.com/xtls/xray-core/features/dns"
 	"github.com/xtls/xray-core/transport/internet/tls"
-	"golang.org/x/net/dns/dnsmessage"
 	"golang.org/x/net/http2"
 )
 
@@ -34,20 +29,14 @@ const handshakeTimeout = time.Second * 8
 // QUICNameServer implemented DNS over QUIC
 type QUICNameServer struct {
 	sync.RWMutex
-	ips           map[string]*record
-	pub           *pubsub.Service
-	cleanup       *task.Periodic
-	reqID         uint32
-	name          string
-	destination   *net.Destination
-	connection    quic.Connection
-	queryStrategy QueryStrategy
+	cacheController *CacheController
+	destination     *net.Destination
+	connection      *quic.Conn
+	clientIP        net.IP
 }
 
 // NewQUICNameServer creates DNS-over-QUIC client object for local resolving
-func NewQUICNameServer(url *url.URL, queryStrategy QueryStrategy) (*QUICNameServer, error) {
-	errors.LogInfo(context.Background(), "DNS: created Local DNS-over-QUIC client for ", url.String())
-
+func NewQUICNameServer(url *url.URL, disableCache bool, serveStale bool, serveExpiredTTL uint32, clientIP net.IP) (*QUICNameServer, error) {
 	var err error
 	port := net.Port(853)
 	if url.Port() != "" {
@@ -59,110 +48,49 @@ func NewQUICNameServer(url *url.URL, queryStrategy QueryStrategy) (*QUICNameServ
 	dest := net.UDPDestination(net.ParseAddress(url.Hostname()), port)
 
 	s := &QUICNameServer{
-		ips:           make(map[string]*record),
-		pub:           pubsub.NewService(),
-		name:          url.String(),
-		destination:   &dest,
-		queryStrategy: queryStrategy,
-	}
-	s.cleanup = &task.Periodic{
-		Interval: time.Minute,
-		Execute:  s.Cleanup,
+		cacheController: NewCacheController(url.String(), disableCache, serveStale, serveExpiredTTL),
+		destination:     &dest,
+		clientIP:        clientIP,
 	}
 
+	errors.LogInfo(context.Background(), "DNS: created Local DNS-over-QUIC client for ", url.String())
 	return s, nil
 }
 
-// Name returns client name
+// Name implements Server.
 func (s *QUICNameServer) Name() string {
-	return s.name
+	return s.cacheController.name
 }
 
-// Cleanup clears expired items from cache
-func (s *QUICNameServer) Cleanup() error {
-	now := time.Now()
-	s.Lock()
-	defer s.Unlock()
-
-	if len(s.ips) == 0 {
-		return errors.New("nothing to do. stopping...")
-	}
-
-	for domain, record := range s.ips {
-		if record.A != nil && record.A.Expire.Before(now) {
-			record.A = nil
-		}
-		if record.AAAA != nil && record.AAAA.Expire.Before(now) {
-			record.AAAA = nil
-		}
-
-		if record.A == nil && record.AAAA == nil {
-			errors.LogDebug(context.Background(), s.name, " cleanup ", domain)
-			delete(s.ips, domain)
-		} else {
-			s.ips[domain] = record
-		}
-	}
-
-	if len(s.ips) == 0 {
-		s.ips = make(map[string]*record)
-	}
-
-	return nil
-}
-
-func (s *QUICNameServer) updateIP(req *dnsRequest, ipRec *IPRecord) {
-	elapsed := time.Since(req.start)
-
-	s.Lock()
-	rec, found := s.ips[req.domain]
-	if !found {
-		rec = &record{}
-	}
-	updated := false
-
-	switch req.reqType {
-	case dnsmessage.TypeA:
-		if isNewer(rec.A, ipRec) {
-			rec.A = ipRec
-			updated = true
-		}
-	case dnsmessage.TypeAAAA:
-		addr := make([]net.Address, 0)
-		for _, ip := range ipRec.IP {
-			if len(ip.IP()) == net.IPv6len {
-				addr = append(addr, ip)
-			}
-		}
-		ipRec.IP = addr
-		if isNewer(rec.AAAA, ipRec) {
-			rec.AAAA = ipRec
-			updated = true
-		}
-	}
-	errors.LogInfo(context.Background(), s.name, " got answer: ", req.domain, " ", req.reqType, " -> ", ipRec.IP, " ", elapsed)
-
-	if updated {
-		s.ips[req.domain] = rec
-	}
-	switch req.reqType {
-	case dnsmessage.TypeA:
-		s.pub.Publish(req.domain+"4", nil)
-	case dnsmessage.TypeAAAA:
-		s.pub.Publish(req.domain+"6", nil)
-	}
-	s.Unlock()
-	common.Must(s.cleanup.Start())
+// IsDisableCache implements Server.
+func (s *QUICNameServer) IsDisableCache() bool {
+	return s.cacheController.disableCache
 }
 
 func (s *QUICNameServer) newReqID() uint16 {
-	return uint16(atomic.AddUint32(&s.reqID, 1))
+	return 0
 }
 
-func (s *QUICNameServer) sendQuery(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption) {
-	errors.LogInfo(ctx, s.name, " querying: ", domain)
+// getCacheController implements CachedNameServer.
+func (s *QUICNameServer) getCacheController() *CacheController { return s.cacheController }
 
-	reqs := buildReqMsgs(domain, option, s.newReqID, genEDNS0Options(clientIP))
+// sendQuery implements CachedNameServer.
+func (s *QUICNameServer) sendQuery(ctx context.Context, noResponseErrCh chan<- error, fqdn string, option dns_feature.IPOption) {
+	errors.LogInfo(ctx, s.Name(), " querying: ", fqdn)
+
+	reqs, err := buildReqMsgs(fqdn, option, s.newReqID, genEDNS0Options(s.clientIP, 0))
+	if err != nil {
+		errors.LogErrorInner(ctx, err, "failed to build dns query for ", fqdn)
+		if noResponseErrCh != nil {
+			if option.IPv4Enable {
+				noResponseErrCh <- err
+			}
+			if option.IPv6Enable {
+				noResponseErrCh <- err
+			}
+		}
+		return
+	}
 
 	var deadline time.Time
 	if d, ok := ctx.Deadline(); ok {
@@ -194,23 +122,46 @@ func (s *QUICNameServer) sendQuery(ctx context.Context, domain string, clientIP
 			b, err := dns.PackMessage(r.msg)
 			if err != nil {
 				errors.LogErrorInner(ctx, err, "failed to pack dns query")
+				if noResponseErrCh != nil {
+					noResponseErrCh <- err
+				}
 				return
 			}
 
 			dnsReqBuf := buf.New()
-			binary.Write(dnsReqBuf, binary.BigEndian, uint16(b.Len()))
-			dnsReqBuf.Write(b.Bytes())
+			err = binary.Write(dnsReqBuf, binary.BigEndian, uint16(b.Len()))
+			if err != nil {
+				errors.LogErrorInner(ctx, err, "binary write failed")
+				if noResponseErrCh != nil {
+					noResponseErrCh <- err
+				}
+				return
+			}
+			_, err = dnsReqBuf.Write(b.Bytes())
+			if err != nil {
+				errors.LogErrorInner(ctx, err, "buffer write failed")
+				if noResponseErrCh != nil {
+					noResponseErrCh <- err
+				}
+				return
+			}
 			b.Release()
 
 			conn, err := s.openStream(dnsCtx)
 			if err != nil {
 				errors.LogErrorInner(ctx, err, "failed to open quic connection")
+				if noResponseErrCh != nil {
+					noResponseErrCh <- err
+				}
 				return
 			}
 
 			_, err = conn.Write(dnsReqBuf.Bytes())
 			if err != nil {
 				errors.LogErrorInner(ctx, err, "failed to send query")
+				if noResponseErrCh != nil {
+					noResponseErrCh <- err
+				}
 				return
 			}
 
@@ -221,137 +172,49 @@ func (s *QUICNameServer) sendQuery(ctx context.Context, domain string, clientIP
 			n, err := respBuf.ReadFullFrom(conn, 2)
 			if err != nil && n == 0 {
 				errors.LogErrorInner(ctx, err, "failed to read response length")
+				if noResponseErrCh != nil {
+					noResponseErrCh <- err
+				}
 				return
 			}
-			var length int16
+			var length uint16
 			err = binary.Read(bytes.NewReader(respBuf.Bytes()), binary.BigEndian, &length)
 			if err != nil {
 				errors.LogErrorInner(ctx, err, "failed to parse response length")
+				if noResponseErrCh != nil {
+					noResponseErrCh <- err
+				}
 				return
 			}
 			respBuf.Clear()
 			n, err = respBuf.ReadFullFrom(conn, int32(length))
 			if err != nil && n == 0 {
 				errors.LogErrorInner(ctx, err, "failed to read response length")
+				if noResponseErrCh != nil {
+					noResponseErrCh <- err
+				}
 				return
 			}
 
 			rec, err := parseResponse(respBuf.Bytes())
 			if err != nil {
 				errors.LogErrorInner(ctx, err, "failed to handle response")
+				if noResponseErrCh != nil {
+					noResponseErrCh <- err
+				}
 				return
 			}
-			s.updateIP(r, rec)
+			s.cacheController.updateRecord(r, rec)
 		}(req)
 	}
 }
 
-func (s *QUICNameServer) findIPsForDomain(domain string, option dns_feature.IPOption) ([]net.IP, error) {
-	s.RLock()
-	record, found := s.ips[domain]
-	s.RUnlock()
-
-	if !found {
-		return nil, errRecordNotFound
-	}
-
-	var err4 error
-	var err6 error
-	var ips []net.Address
-	var ip6 []net.Address
-
-	if option.IPv4Enable {
-		ips, err4 = record.A.getIPs()
-	}
-
-	if option.IPv6Enable {
-		ip6, err6 = record.AAAA.getIPs()
-		ips = append(ips, ip6...)
-	}
-
-	if len(ips) > 0 {
-		return toNetIP(ips)
-	}
-
-	if err4 != nil {
-		return nil, err4
-	}
-
-	if err6 != nil {
-		return nil, err6
-	}
-
-	if (option.IPv4Enable && record.A != nil) || (option.IPv6Enable && record.AAAA != nil) {
-		return nil, dns_feature.ErrEmptyResponse
-	}
-
-	return nil, errRecordNotFound
+// QueryIP implements Server.
+func (s *QUICNameServer) QueryIP(ctx context.Context, domain string, option dns_feature.IPOption) ([]net.IP, uint32, error) {
+	return queryIP(ctx, s, domain, option)
 }
 
-// QueryIP is called from dns.Server->queryIPTimeout
-func (s *QUICNameServer) QueryIP(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption, disableCache bool) ([]net.IP, error) {
-	fqdn := Fqdn(domain)
-	option = ResolveIpOptionOverride(s.queryStrategy, option)
-	if !option.IPv4Enable && !option.IPv6Enable {
-		return nil, dns_feature.ErrEmptyResponse
-	}
-
-	if disableCache {
-		errors.LogDebug(ctx, "DNS cache is disabled. Querying IP for ", domain, " at ", s.name)
-	} else {
-		ips, err := s.findIPsForDomain(fqdn, option)
-		if err != errRecordNotFound {
-			errors.LogDebugInner(ctx, err, s.name, " cache HIT ", domain, " -> ", ips)
-			log.Record(&log.DNSLog{Server: s.name, Domain: domain, Result: ips, Status: log.DNSCacheHit, Elapsed: 0, Error: err})
-			return ips, err
-		}
-	}
-
-	// ipv4 and ipv6 belong to different subscription groups
-	var sub4, sub6 *pubsub.Subscriber
-	if option.IPv4Enable {
-		sub4 = s.pub.Subscribe(fqdn + "4")
-		defer sub4.Close()
-	}
-	if option.IPv6Enable {
-		sub6 = s.pub.Subscribe(fqdn + "6")
-		defer sub6.Close()
-	}
-	done := make(chan interface{})
-	go func() {
-		if sub4 != nil {
-			select {
-			case <-sub4.Wait():
-			case <-ctx.Done():
-			}
-		}
-		if sub6 != nil {
-			select {
-			case <-sub6.Wait():
-			case <-ctx.Done():
-			}
-		}
-		close(done)
-	}()
-	s.sendQuery(ctx, fqdn, clientIP, option)
-	start := time.Now()
-
-	for {
-		ips, err := s.findIPsForDomain(fqdn, option)
-		if err != errRecordNotFound {
-			log.Record(&log.DNSLog{Server: s.name, Domain: domain, Result: ips, Status: log.DNSQueried, Elapsed: time.Since(start), Error: err})
-			return ips, err
-		}
-
-		select {
-		case <-ctx.Done():
-			return nil, ctx.Err()
-		case <-done:
-		}
-	}
-}
-
-func isActive(s quic.Connection) bool {
+func isActive(s *quic.Conn) bool {
 	select {
 	case <-s.Context().Done():
 		return false
@@ -360,8 +223,8 @@ func isActive(s quic.Connection) bool {
 	}
 }
 
-func (s *QUICNameServer) getConnection() (quic.Connection, error) {
-	var conn quic.Connection
+func (s *QUICNameServer) getConnection() (*quic.Conn, error) {
+	var conn *quic.Conn
 	s.RLock()
 	conn = s.connection
 	if conn != nil && isActive(conn) {
@@ -394,7 +257,7 @@ func (s *QUICNameServer) getConnection() (quic.Connection, error) {
 	return conn, nil
 }
 
-func (s *QUICNameServer) openConnection() (quic.Connection, error) {
+func (s *QUICNameServer) openConnection() (*quic.Conn, error) {
 	tlsConfig := tls.Config{}
 	quicConfig := &quic.Config{
 		HandshakeIdleTimeout: handshakeTimeout,
@@ -414,7 +277,7 @@ func (s *QUICNameServer) openConnection() (quic.Connection, error) {
 	return conn, nil
 }
 
-func (s *QUICNameServer) openStream(ctx context.Context) (quic.Stream, error) {
+func (s *QUICNameServer) openStream(ctx context.Context) (*quic.Stream, error) {
 	conn, err := s.getConnection()
 	if err != nil {
 		return nil, err

app/dns/nameserver_quic_test.go

@@ -14,26 +14,25 @@ import (
 )
 
 func TestQUICNameServer(t *testing.T) {
-	url, err := url.Parse("quic://dns.adguard.com")
+	url, err := url.Parse("quic://dns.adguard-dns.com")
 	common.Must(err)
-	s, err := NewQUICNameServer(url, QueryStrategy_USE_IP)
+	s, err := NewQUICNameServer(url, false, false, 0, net.IP(nil))
 	common.Must(err)
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second*2)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns.IPOption{
+	ips, _, err := s.QueryIP(ctx, "google.com", dns.IPOption{
 		IPv4Enable: true,
 		IPv6Enable: true,
-	}, false)
+	})
 	cancel()
 	common.Must(err)
 	if len(ips) == 0 {
 		t.Error("expect some ips, but got 0")
 	}
-
 	ctx2, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips2, err := s.QueryIP(ctx2, "google.com", net.IP(nil), dns.IPOption{
+	ips2, _, err := s.QueryIP(ctx2, "google.com", dns.IPOption{
 		IPv4Enable: true,
 		IPv6Enable: true,
-	}, true)
+	})
 	cancel()
 	common.Must(err)
 	if r := cmp.Diff(ips2, ips); r != "" {
@@ -42,15 +41,15 @@ func TestQUICNameServer(t *testing.T) {
 }
 
 func TestQUICNameServerWithIPv4Override(t *testing.T) {
-	url, err := url.Parse("quic://dns.adguard.com")
+	url, err := url.Parse("quic://dns.adguard-dns.com")
 	common.Must(err)
-	s, err := NewQUICNameServer(url, QueryStrategy_USE_IP4)
+	s, err := NewQUICNameServer(url, false, false, 0, net.IP(nil))
 	common.Must(err)
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second*2)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns.IPOption{
+	ips, _, err := s.QueryIP(ctx, "google.com", dns.IPOption{
 		IPv4Enable: true,
-		IPv6Enable: true,
-	}, false)
+		IPv6Enable: false,
+	})
 	cancel()
 	common.Must(err)
 	if len(ips) == 0 {
@@ -65,15 +64,15 @@ func TestQUICNameServerWithIPv4Override(t *testing.T) {
 }
 
 func TestQUICNameServerWithIPv6Override(t *testing.T) {
-	url, err := url.Parse("quic://dns.adguard.com")
+	url, err := url.Parse("quic://dns.adguard-dns.com")
 	common.Must(err)
-	s, err := NewQUICNameServer(url, QueryStrategy_USE_IP6)
+	s, err := NewQUICNameServer(url, false, false, 0, net.IP(nil))
 	common.Must(err)
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second*2)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns.IPOption{
-		IPv4Enable: true,
+	ips, _, err := s.QueryIP(ctx, "google.com", dns.IPOption{
+		IPv4Enable: false,
 		IPv6Enable: true,
-	}, false)
+	})
 	cancel()
 	common.Must(err)
 	if len(ips) == 0 {

app/dns/nameserver_tcp.go

@@ -5,46 +5,37 @@ import (
 	"context"
 	"encoding/binary"
 	"net/url"
-	"sync"
 	"sync/atomic"
 	"time"
 
-	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/common/errors"
-	"github.com/xtls/xray-core/common/log"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/net/cnc"
 	"github.com/xtls/xray-core/common/protocol/dns"
 	"github.com/xtls/xray-core/common/session"
-	"github.com/xtls/xray-core/common/signal/pubsub"
-	"github.com/xtls/xray-core/common/task"
 	dns_feature "github.com/xtls/xray-core/features/dns"
 	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/transport/internet"
-	"golang.org/x/net/dns/dnsmessage"
 )
 
 // TCPNameServer implemented DNS over TCP (RFC7766).
 type TCPNameServer struct {
-	sync.RWMutex
-	name          string
-	destination   *net.Destination
-	ips           map[string]*record
-	pub           *pubsub.Service
-	cleanup       *task.Periodic
-	reqID         uint32
-	dial          func(context.Context) (net.Conn, error)
-	queryStrategy QueryStrategy
+	cacheController *CacheController
+	destination     *net.Destination
+	reqID           uint32
+	dial            func(context.Context) (net.Conn, error)
+	clientIP        net.IP
 }
 
 // NewTCPNameServer creates DNS over TCP server object for remote resolving.
 func NewTCPNameServer(
 	url *url.URL,
 	dispatcher routing.Dispatcher,
-	queryStrategy QueryStrategy,
+	disableCache bool, serveStale bool, serveExpiredTTL uint32,
+	clientIP net.IP,
 ) (*TCPNameServer, error) {
-	s, err := baseTCPNameServer(url, "TCP", queryStrategy)
+	s, err := baseTCPNameServer(url, "TCP", disableCache, serveStale, serveExpiredTTL, clientIP)
 	if err != nil {
 		return nil, err
 	}
@@ -61,12 +52,13 @@ func NewTCPNameServer(
 		), nil
 	}
 
+	errors.LogInfo(context.Background(), "DNS: created TCP client initialized for ", url.String())
 	return s, nil
 }
 
 // NewTCPLocalNameServer creates DNS over TCP client object for local resolving
-func NewTCPLocalNameServer(url *url.URL, queryStrategy QueryStrategy) (*TCPNameServer, error) {
-	s, err := baseTCPNameServer(url, "TCPL", queryStrategy)
+func NewTCPLocalNameServer(url *url.URL, disableCache bool, serveStale bool, serveExpiredTTL uint32, clientIP net.IP) (*TCPNameServer, error) {
+	s, err := baseTCPNameServer(url, "TCPL", disableCache, serveStale, serveExpiredTTL, clientIP)
 	if err != nil {
 		return nil, err
 	}
@@ -75,10 +67,11 @@ func NewTCPLocalNameServer(url *url.URL, queryStrategy QueryStrategy) (*TCPNameS
 		return internet.DialSystem(ctx, *s.destination, nil)
 	}
 
+	errors.LogInfo(context.Background(), "DNS: created Local TCP client initialized for ", url.String())
 	return s, nil
 }
 
-func baseTCPNameServer(url *url.URL, prefix string, queryStrategy QueryStrategy) (*TCPNameServer, error) {
+func baseTCPNameServer(url *url.URL, prefix string, disableCache bool, serveStale bool, serveExpiredTTL uint32, clientIP net.IP) (*TCPNameServer, error) {
 	port := net.Port(53)
 	if url.Port() != "" {
 		var err error
@@ -89,15 +82,9 @@ func baseTCPNameServer(url *url.URL, prefix string, queryStrategy QueryStrategy)
 	dest := net.TCPDestination(net.ParseAddress(url.Hostname()), port)
 
 	s := &TCPNameServer{
-		destination:   &dest,
-		ips:           make(map[string]*record),
-		pub:           pubsub.NewService(),
-		name:          prefix + "//" + dest.NetAddr(),
-		queryStrategy: queryStrategy,
-	}
-	s.cleanup = &task.Periodic{
-		Interval: time.Minute,
-		Execute:  s.Cleanup,
+		cacheController: NewCacheController(prefix+"//"+dest.NetAddr(), disableCache, serveStale, serveExpiredTTL),
+		destination:     &dest,
+		clientIP:        clientIP,
 	}
 
 	return s, nil
@@ -105,94 +92,40 @@ func baseTCPNameServer(url *url.URL, prefix string, queryStrategy QueryStrategy)
 
 // Name implements Server.
 func (s *TCPNameServer) Name() string {
-	return s.name
+	return s.cacheController.name
 }
 
-// Cleanup clears expired items from cache
-func (s *TCPNameServer) Cleanup() error {
-	now := time.Now()
-	s.Lock()
-	defer s.Unlock()
-
-	if len(s.ips) == 0 {
-		return errors.New("nothing to do. stopping...")
-	}
-
-	for domain, record := range s.ips {
-		if record.A != nil && record.A.Expire.Before(now) {
-			record.A = nil
-		}
-		if record.AAAA != nil && record.AAAA.Expire.Before(now) {
-			record.AAAA = nil
-		}
-
-		if record.A == nil && record.AAAA == nil {
-			errors.LogDebug(context.Background(), s.name, " cleanup ", domain)
-			delete(s.ips, domain)
-		} else {
-			s.ips[domain] = record
-		}
-	}
-
-	if len(s.ips) == 0 {
-		s.ips = make(map[string]*record)
-	}
-
-	return nil
-}
-
-func (s *TCPNameServer) updateIP(req *dnsRequest, ipRec *IPRecord) {
-	elapsed := time.Since(req.start)
-
-	s.Lock()
-	rec, found := s.ips[req.domain]
-	if !found {
-		rec = &record{}
-	}
-	updated := false
-
-	switch req.reqType {
-	case dnsmessage.TypeA:
-		if isNewer(rec.A, ipRec) {
-			rec.A = ipRec
-			updated = true
-		}
-	case dnsmessage.TypeAAAA:
-		addr := make([]net.Address, 0)
-		for _, ip := range ipRec.IP {
-			if len(ip.IP()) == net.IPv6len {
-				addr = append(addr, ip)
-			}
-		}
-		ipRec.IP = addr
-		if isNewer(rec.AAAA, ipRec) {
-			rec.AAAA = ipRec
-			updated = true
-		}
-	}
-	errors.LogInfo(context.Background(), s.name, " got answer: ", req.domain, " ", req.reqType, " -> ", ipRec.IP, " ", elapsed)
-
-	if updated {
-		s.ips[req.domain] = rec
-	}
-	switch req.reqType {
-	case dnsmessage.TypeA:
-		s.pub.Publish(req.domain+"4", nil)
-	case dnsmessage.TypeAAAA:
-		s.pub.Publish(req.domain+"6", nil)
-	}
-	s.Unlock()
-	common.Must(s.cleanup.Start())
+// IsDisableCache implements Server.
+func (s *TCPNameServer) IsDisableCache() bool {
+	return s.cacheController.disableCache
 }
 
 func (s *TCPNameServer) newReqID() uint16 {
 	return uint16(atomic.AddUint32(&s.reqID, 1))
 }
 
-func (s *TCPNameServer) sendQuery(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption) {
-	errors.LogDebug(ctx, s.name, " querying DNS for: ", domain)
+// getCacheController implements CachedNameserver.
+func (s *TCPNameServer) getCacheController() *CacheController {
+	return s.cacheController
+}
 
-	reqs := buildReqMsgs(domain, option, s.newReqID, genEDNS0Options(clientIP))
+// sendQuery implements CachedNameserver.
+func (s *TCPNameServer) sendQuery(ctx context.Context, noResponseErrCh chan<- error, fqdn string, option dns_feature.IPOption) {
+	errors.LogInfo(ctx, s.Name(), " querying DNS for: ", fqdn)
+
+	reqs, err := buildReqMsgs(fqdn, option, s.newReqID, genEDNS0Options(s.clientIP, 0))
+	if err != nil {
+		errors.LogErrorInner(ctx, err, "failed to build dns query for ", fqdn)
+		if noResponseErrCh != nil {
+			if option.IPv4Enable {
+				noResponseErrCh <- err
+			}
+			if option.IPv6Enable {
+				noResponseErrCh <- err
+			}
+		}
+		return
+	}
 
 	var deadline time.Time
 	if d, ok := ctx.Deadline(); ok {
@@ -221,23 +154,46 @@ func (s *TCPNameServer) sendQuery(ctx context.Context, domain string, clientIP n
 			b, err := dns.PackMessage(r.msg)
 			if err != nil {
 				errors.LogErrorInner(ctx, err, "failed to pack dns query")
+				if noResponseErrCh != nil {
+					noResponseErrCh <- err
+				}
 				return
 			}
 
 			conn, err := s.dial(dnsCtx)
 			if err != nil {
 				errors.LogErrorInner(ctx, err, "failed to dial namesever")
+				if noResponseErrCh != nil {
+					noResponseErrCh <- err
+				}
 				return
 			}
 			defer conn.Close()
 			dnsReqBuf := buf.New()
-			binary.Write(dnsReqBuf, binary.BigEndian, uint16(b.Len()))
-			dnsReqBuf.Write(b.Bytes())
+			err = binary.Write(dnsReqBuf, binary.BigEndian, uint16(b.Len()))
+			if err != nil {
+				errors.LogErrorInner(ctx, err, "binary write failed")
+				if noResponseErrCh != nil {
+					noResponseErrCh <- err
+				}
+				return
+			}
+			_, err = dnsReqBuf.Write(b.Bytes())
+			if err != nil {
+				errors.LogErrorInner(ctx, err, "buffer write failed")
+				if noResponseErrCh != nil {
+					noResponseErrCh <- err
+				}
+				return
+			}
 			b.Release()
 
 			_, err = conn.Write(dnsReqBuf.Bytes())
 			if err != nil {
 				errors.LogErrorInner(ctx, err, "failed to send query")
+				if noResponseErrCh != nil {
+					noResponseErrCh <- err
+				}
 				return
 			}
 			dnsReqBuf.Release()
@@ -247,129 +203,45 @@ func (s *TCPNameServer) sendQuery(ctx context.Context, domain string, clientIP n
 			n, err := respBuf.ReadFullFrom(conn, 2)
 			if err != nil && n == 0 {
 				errors.LogErrorInner(ctx, err, "failed to read response length")
+				if noResponseErrCh != nil {
+					noResponseErrCh <- err
+				}
 				return
 			}
-			var length int16
+			var length uint16
 			err = binary.Read(bytes.NewReader(respBuf.Bytes()), binary.BigEndian, &length)
 			if err != nil {
 				errors.LogErrorInner(ctx, err, "failed to parse response length")
+				if noResponseErrCh != nil {
+					noResponseErrCh <- err
+				}
 				return
 			}
 			respBuf.Clear()
 			n, err = respBuf.ReadFullFrom(conn, int32(length))
 			if err != nil && n == 0 {
 				errors.LogErrorInner(ctx, err, "failed to read response length")
+				if noResponseErrCh != nil {
+					noResponseErrCh <- err
+				}
 				return
 			}
 
 			rec, err := parseResponse(respBuf.Bytes())
 			if err != nil {
 				errors.LogErrorInner(ctx, err, "failed to parse DNS over TCP response")
+				if noResponseErrCh != nil {
+					noResponseErrCh <- err
+				}
 				return
 			}
 
-			s.updateIP(r, rec)
+			s.cacheController.updateRecord(r, rec)
 		}(req)
 	}
 }
 
-func (s *TCPNameServer) findIPsForDomain(domain string, option dns_feature.IPOption) ([]net.IP, error) {
-	s.RLock()
-	record, found := s.ips[domain]
-	s.RUnlock()
-
-	if !found {
-		return nil, errRecordNotFound
-	}
-
-	var err4 error
-	var err6 error
-	var ips []net.Address
-	var ip6 []net.Address
-
-	if option.IPv4Enable {
-		ips, err4 = record.A.getIPs()
-	}
-
-	if option.IPv6Enable {
-		ip6, err6 = record.AAAA.getIPs()
-		ips = append(ips, ip6...)
-	}
-
-	if len(ips) > 0 {
-		return toNetIP(ips)
-	}
-
-	if err4 != nil {
-		return nil, err4
-	}
-
-	if err6 != nil {
-		return nil, err6
-	}
-
-	return nil, dns_feature.ErrEmptyResponse
-}
-
 // QueryIP implements Server.
-func (s *TCPNameServer) QueryIP(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption, disableCache bool) ([]net.IP, error) {
-	fqdn := Fqdn(domain)
-	option = ResolveIpOptionOverride(s.queryStrategy, option)
-	if !option.IPv4Enable && !option.IPv6Enable {
-		return nil, dns_feature.ErrEmptyResponse
-	}
-
-	if disableCache {
-		errors.LogDebug(ctx, "DNS cache is disabled. Querying IP for ", domain, " at ", s.name)
-	} else {
-		ips, err := s.findIPsForDomain(fqdn, option)
-		if err != errRecordNotFound {
-			errors.LogDebugInner(ctx, err, s.name, " cache HIT ", domain, " -> ", ips)
-			log.Record(&log.DNSLog{Server: s.name, Domain: domain, Result: ips, Status: log.DNSCacheHit, Elapsed: 0, Error: err})
-			return ips, err
-		}
-	}
-
-	// ipv4 and ipv6 belong to different subscription groups
-	var sub4, sub6 *pubsub.Subscriber
-	if option.IPv4Enable {
-		sub4 = s.pub.Subscribe(fqdn + "4")
-		defer sub4.Close()
-	}
-	if option.IPv6Enable {
-		sub6 = s.pub.Subscribe(fqdn + "6")
-		defer sub6.Close()
-	}
-	done := make(chan interface{})
-	go func() {
-		if sub4 != nil {
-			select {
-			case <-sub4.Wait():
-			case <-ctx.Done():
-			}
-		}
-		if sub6 != nil {
-			select {
-			case <-sub6.Wait():
-			case <-ctx.Done():
-			}
-		}
-		close(done)
-	}()
-	s.sendQuery(ctx, fqdn, clientIP, option)
-	start := time.Now()
-
-	for {
-		ips, err := s.findIPsForDomain(fqdn, option)
-		if err != errRecordNotFound {
-			log.Record(&log.DNSLog{Server: s.name, Domain: domain, Result: ips, Status: log.DNSQueried, Elapsed: time.Since(start), Error: err})
-			return ips, err
-		}
-
-		select {
-		case <-ctx.Done():
-			return nil, ctx.Err()
-		case <-done:
-		}
-	}
+func (s *TCPNameServer) QueryIP(ctx context.Context, domain string, option dns_feature.IPOption) ([]net.IP, uint32, error) {
+	return queryIP(ctx, s, domain, option)
 }

app/dns/nameserver_tcp_test.go

@@ -16,13 +16,13 @@ import (
 func TestTCPLocalNameServer(t *testing.T) {
 	url, err := url.Parse("tcp+local://8.8.8.8")
 	common.Must(err)
-	s, err := NewTCPLocalNameServer(url, QueryStrategy_USE_IP)
+	s, err := NewTCPLocalNameServer(url, false, false, 0, net.IP(nil))
 	common.Must(err)
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
+	ips, _, err := s.QueryIP(ctx, "google.com", dns_feature.IPOption{
 		IPv4Enable: true,
 		IPv6Enable: true,
-	}, false)
+	})
 	cancel()
 	common.Must(err)
 	if len(ips) == 0 {
@@ -33,13 +33,13 @@ func TestTCPLocalNameServer(t *testing.T) {
 func TestTCPLocalNameServerWithCache(t *testing.T) {
 	url, err := url.Parse("tcp+local://8.8.8.8")
 	common.Must(err)
-	s, err := NewTCPLocalNameServer(url, QueryStrategy_USE_IP)
+	s, err := NewTCPLocalNameServer(url, false, false, 0, net.IP(nil))
 	common.Must(err)
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
+	ips, _, err := s.QueryIP(ctx, "google.com", dns_feature.IPOption{
 		IPv4Enable: true,
 		IPv6Enable: true,
-	}, false)
+	})
 	cancel()
 	common.Must(err)
 	if len(ips) == 0 {
@@ -47,10 +47,10 @@ func TestTCPLocalNameServerWithCache(t *testing.T) {
 	}
 
 	ctx2, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips2, err := s.QueryIP(ctx2, "google.com", net.IP(nil), dns_feature.IPOption{
+	ips2, _, err := s.QueryIP(ctx2, "google.com", dns_feature.IPOption{
 		IPv4Enable: true,
 		IPv6Enable: true,
-	}, true)
+	})
 	cancel()
 	common.Must(err)
 	if r := cmp.Diff(ips2, ips); r != "" {
@@ -61,13 +61,13 @@ func TestTCPLocalNameServerWithCache(t *testing.T) {
 func TestTCPLocalNameServerWithIPv4Override(t *testing.T) {
 	url, err := url.Parse("tcp+local://8.8.8.8")
 	common.Must(err)
-	s, err := NewTCPLocalNameServer(url, QueryStrategy_USE_IP4)
+	s, err := NewTCPLocalNameServer(url, false, false, 0, net.IP(nil))
 	common.Must(err)
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
+	ips, _, err := s.QueryIP(ctx, "google.com", dns_feature.IPOption{
 		IPv4Enable: true,
-		IPv6Enable: true,
-	}, false)
+		IPv6Enable: false,
+	})
 	cancel()
 	common.Must(err)
 
@@ -85,13 +85,13 @@ func TestTCPLocalNameServerWithIPv4Override(t *testing.T) {
 func TestTCPLocalNameServerWithIPv6Override(t *testing.T) {
 	url, err := url.Parse("tcp+local://8.8.8.8")
 	common.Must(err)
-	s, err := NewTCPLocalNameServer(url, QueryStrategy_USE_IP6)
+	s, err := NewTCPLocalNameServer(url, false, false, 0, net.IP(nil))
 	common.Must(err)
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
-		IPv4Enable: true,
+	ips, _, err := s.QueryIP(ctx, "google.com", dns_feature.IPOption{
+		IPv4Enable: false,
 		IPv6Enable: true,
-	}, false)
+	})
 	cancel()
 	common.Must(err)
 

app/dns/nameserver_udp.go

@@ -9,11 +9,9 @@ import (
 
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/errors"
-	"github.com/xtls/xray-core/common/log"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/protocol/dns"
 	udp_proto "github.com/xtls/xray-core/common/protocol/udp"
-	"github.com/xtls/xray-core/common/signal/pubsub"
 	"github.com/xtls/xray-core/common/task"
 	dns_feature "github.com/xtls/xray-core/features/dns"
 	"github.com/xtls/xray-core/features/routing"
@@ -24,72 +22,61 @@ import (
 // ClassicNameServer implemented traditional UDP DNS.
 type ClassicNameServer struct {
 	sync.RWMutex
-	name      string
-	address   *net.Destination
-	ips       map[string]*record
-	requests  map[uint16]*dnsRequest
-	pub       *pubsub.Service
-	udpServer *udp.Dispatcher
-	cleanup   *task.Periodic
-	reqID     uint32
+	cacheController *CacheController
+	address         *net.Destination
+	requests        map[uint16]*udpDnsRequest
+	udpServer       *udp.Dispatcher
+	requestsCleanup *task.Periodic
+	reqID           uint32
+	clientIP        net.IP
+}
+
+type udpDnsRequest struct {
+	dnsRequest
+	ctx context.Context
 }
 
 // NewClassicNameServer creates udp server object for remote resolving.
-func NewClassicNameServer(address net.Destination, dispatcher routing.Dispatcher) *ClassicNameServer {
+func NewClassicNameServer(address net.Destination, dispatcher routing.Dispatcher, disableCache bool, serveStale bool, serveExpiredTTL uint32, clientIP net.IP) *ClassicNameServer {
 	// default to 53 if unspecific
 	if address.Port == 0 {
 		address.Port = net.Port(53)
 	}
 
 	s := &ClassicNameServer{
-		address:  &address,
-		ips:      make(map[string]*record),
-		requests: make(map[uint16]*dnsRequest),
-		pub:      pubsub.NewService(),
-		name:     strings.ToUpper(address.String()),
+		cacheController: NewCacheController(strings.ToUpper(address.String()), disableCache, serveStale, serveExpiredTTL),
+		address:         &address,
+		requests:        make(map[uint16]*udpDnsRequest),
+		clientIP:        clientIP,
 	}
-	s.cleanup = &task.Periodic{
+	s.requestsCleanup = &task.Periodic{
 		Interval: time.Minute,
-		Execute:  s.Cleanup,
+		Execute:  s.RequestsCleanup,
 	}
 	s.udpServer = udp.NewDispatcher(dispatcher, s.HandleResponse)
+
 	errors.LogInfo(context.Background(), "DNS: created UDP client initialized for ", address.NetAddr())
 	return s
 }
 
 // Name implements Server.
 func (s *ClassicNameServer) Name() string {
-	return s.name
+	return s.cacheController.name
 }
 
-// Cleanup clears expired items from cache
-func (s *ClassicNameServer) Cleanup() error {
+// IsDisableCache implements Server.
+func (s *ClassicNameServer) IsDisableCache() bool {
+	return s.cacheController.disableCache
+}
+
+// RequestsCleanup clears expired items from cache
+func (s *ClassicNameServer) RequestsCleanup() error {
 	now := time.Now()
 	s.Lock()
 	defer s.Unlock()
 
-	if len(s.ips) == 0 && len(s.requests) == 0 {
-		return errors.New(s.name, " nothing to do. stopping...")
-	}
-
-	for domain, record := range s.ips {
-		if record.A != nil && record.A.Expire.Before(now) {
-			record.A = nil
-		}
-		if record.AAAA != nil && record.AAAA.Expire.Before(now) {
-			record.AAAA = nil
-		}
-
-		if record.A == nil && record.AAAA == nil {
-			errors.LogDebug(context.Background(), s.name, " cleanup ", domain)
-			delete(s.ips, domain)
-		} else {
-			s.ips[domain] = record
-		}
-	}
-
-	if len(s.ips) == 0 {
-		s.ips = make(map[string]*record)
+	if len(s.requests) == 0 {
+		return errors.New(s.Name(), " nothing to do. stopping...")
 	}
 
 	for id, req := range s.requests {
@@ -99,7 +86,7 @@ func (s *ClassicNameServer) Cleanup() error {
 	}
 
 	if len(s.requests) == 0 {
-		s.requests = make(map[uint16]*dnsRequest)
+		s.requests = make(map[uint16]*udpDnsRequest)
 	}
 
 	return nil
@@ -107,9 +94,11 @@ func (s *ClassicNameServer) Cleanup() error {
 
 // HandleResponse handles udp response packet from remote DNS server.
 func (s *ClassicNameServer) HandleResponse(ctx context.Context, packet *udp_proto.Packet) {
-	ipRec, err := parseResponse(packet.Payload.Bytes())
+	payload := packet.Payload
+	ipRec, err := parseResponse(payload.Bytes())
+	payload.Release()
 	if err != nil {
-		errors.LogError(ctx, s.name, " fail to parse responded DNS udp")
+		errors.LogErrorInner(ctx, err, s.Name(), " fail to parse responded DNS udp")
 		return
 	}
 
@@ -122,175 +111,89 @@ func (s *ClassicNameServer) HandleResponse(ctx context.Context, packet *udp_prot
 	}
 	s.Unlock()
 	if !ok {
-		errors.LogError(ctx, s.name, " cannot find the pending request")
+		errors.LogErrorInner(ctx, err, s.Name(), " cannot find the pending request")
 		return
 	}
 
-	var rec record
-	switch req.reqType {
-	case dnsmessage.TypeA:
-		rec.A = ipRec
-	case dnsmessage.TypeAAAA:
-		rec.AAAA = ipRec
+	// if truncated, retry with EDNS0 option(udp payload size: 1350)
+	if ipRec.RawHeader.Truncated {
+		// if already has EDNS0 option, no need to retry
+		if len(req.msg.Additionals) == 0 {
+			// copy necessary meta data from original request
+			// and add EDNS0 option
+			opt := new(dnsmessage.Resource)
+			common.Must(opt.Header.SetEDNS0(1350, 0xfe00, true))
+			opt.Body = &dnsmessage.OPTResource{}
+			newMsg := *req.msg
+			newReq := *req
+			newMsg.Additionals = append(newMsg.Additionals, *opt)
+			newMsg.ID = s.newReqID()
+			newReq.msg = &newMsg
+			s.addPendingRequest(&newReq)
+			b, _ := dns.PackMessage(newReq.msg)
+			s.udpServer.Dispatch(toDnsContext(newReq.ctx, s.address.String()), *s.address, b)
+			return
+		}
 	}
 
-	elapsed := time.Since(req.start)
-	errors.LogInfo(ctx, s.name, " got answer: ", req.domain, " ", req.reqType, " -> ", ipRec.IP, " ", elapsed)
-	if len(req.domain) > 0 && (rec.A != nil || rec.AAAA != nil) {
-		s.updateIP(req.domain, &rec)
-	}
-}
-
-func (s *ClassicNameServer) updateIP(domain string, newRec *record) {
-	s.Lock()
-
-	rec, found := s.ips[domain]
-	if !found {
-		rec = &record{}
-	}
-
-	updated := false
-	if isNewer(rec.A, newRec.A) {
-		rec.A = newRec.A
-		updated = true
-	}
-	if isNewer(rec.AAAA, newRec.AAAA) {
-		rec.AAAA = newRec.AAAA
-		updated = true
-	}
-
-	if updated {
-		errors.LogDebug(context.Background(), s.name, " updating IP records for domain:", domain)
-		s.ips[domain] = rec
-	}
-	if newRec.A != nil {
-		s.pub.Publish(domain+"4", nil)
-	}
-	if newRec.AAAA != nil {
-		s.pub.Publish(domain+"6", nil)
-	}
-	s.Unlock()
-	common.Must(s.cleanup.Start())
+	s.cacheController.updateRecord(&req.dnsRequest, ipRec)
 }
 
 func (s *ClassicNameServer) newReqID() uint16 {
 	return uint16(atomic.AddUint32(&s.reqID, 1))
 }
 
-func (s *ClassicNameServer) addPendingRequest(req *dnsRequest) {
+func (s *ClassicNameServer) addPendingRequest(req *udpDnsRequest) {
 	s.Lock()
-	defer s.Unlock()
-
 	id := req.msg.ID
 	req.expire = time.Now().Add(time.Second * 8)
 	s.requests[id] = req
+	s.Unlock()
+	common.Must(s.requestsCleanup.Start())
 }
 
-func (s *ClassicNameServer) sendQuery(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption) {
-	errors.LogDebug(ctx, s.name, " querying DNS for: ", domain)
+// getCacheController implements CachedNameserver.
+func (s *ClassicNameServer) getCacheController() *CacheController {
+	return s.cacheController
+}
 
-	reqs := buildReqMsgs(domain, option, s.newReqID, genEDNS0Options(clientIP))
+// sendQuery implements CachedNameserver.
+func (s *ClassicNameServer) sendQuery(ctx context.Context, noResponseErrCh chan<- error, fqdn string, option dns_feature.IPOption) {
+	errors.LogInfo(ctx, s.Name(), " querying DNS for: ", fqdn)
+
+	reqs, err := buildReqMsgs(fqdn, option, s.newReqID, genEDNS0Options(s.clientIP, 0))
+	if err != nil {
+		errors.LogErrorInner(ctx, err, "failed to build dns query for ", fqdn)
+		if noResponseErrCh != nil {
+			if option.IPv4Enable {
+				noResponseErrCh <- err
+			}
+			if option.IPv6Enable {
+				noResponseErrCh <- err
+			}
+		}
+		return
+	}
 
 	for _, req := range reqs {
-		s.addPendingRequest(req)
-		b, _ := dns.PackMessage(req.msg)
+		udpReq := &udpDnsRequest{
+			dnsRequest: *req,
+			ctx:        ctx,
+		}
+		s.addPendingRequest(udpReq)
+		b, err := dns.PackMessage(req.msg)
+		if err != nil {
+			errors.LogErrorInner(ctx, err, "failed to pack dns query")
+			if noResponseErrCh != nil {
+				noResponseErrCh <- err
+			}
+			return
+		}
 		s.udpServer.Dispatch(toDnsContext(ctx, s.address.String()), *s.address, b)
 	}
 }
 
-func (s *ClassicNameServer) findIPsForDomain(domain string, option dns_feature.IPOption) ([]net.IP, error) {
-	s.RLock()
-	record, found := s.ips[domain]
-	s.RUnlock()
-
-	if !found {
-		return nil, errRecordNotFound
-	}
-
-	var err4 error
-	var err6 error
-	var ips []net.Address
-	var ip6 []net.Address
-
-	if option.IPv4Enable {
-		ips, err4 = record.A.getIPs()
-	}
-
-	if option.IPv6Enable {
-		ip6, err6 = record.AAAA.getIPs()
-		ips = append(ips, ip6...)
-	}
-
-	if len(ips) > 0 {
-		return toNetIP(ips)
-	}
-
-	if err4 != nil {
-		return nil, err4
-	}
-
-	if err6 != nil {
-		return nil, err6
-	}
-
-	return nil, dns_feature.ErrEmptyResponse
-}
-
 // QueryIP implements Server.
-func (s *ClassicNameServer) QueryIP(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption, disableCache bool) ([]net.IP, error) {
-	fqdn := Fqdn(domain)
-
-	if disableCache {
-		errors.LogDebug(ctx, "DNS cache is disabled. Querying IP for ", domain, " at ", s.name)
-	} else {
-		ips, err := s.findIPsForDomain(fqdn, option)
-		if err != errRecordNotFound {
-			errors.LogDebugInner(ctx, err, s.name, " cache HIT ", domain, " -> ", ips)
-			log.Record(&log.DNSLog{Server: s.name, Domain: domain, Result: ips, Status: log.DNSCacheHit, Elapsed: 0, Error: err})
-			return ips, err
-		}
-	}
-
-	// ipv4 and ipv6 belong to different subscription groups
-	var sub4, sub6 *pubsub.Subscriber
-	if option.IPv4Enable {
-		sub4 = s.pub.Subscribe(fqdn + "4")
-		defer sub4.Close()
-	}
-	if option.IPv6Enable {
-		sub6 = s.pub.Subscribe(fqdn + "6")
-		defer sub6.Close()
-	}
-	done := make(chan interface{})
-	go func() {
-		if sub4 != nil {
-			select {
-			case <-sub4.Wait():
-			case <-ctx.Done():
-			}
-		}
-		if sub6 != nil {
-			select {
-			case <-sub6.Wait():
-			case <-ctx.Done():
-			}
-		}
-		close(done)
-	}()
-	s.sendQuery(ctx, fqdn, clientIP, option)
-	start := time.Now()
-
-	for {
-		ips, err := s.findIPsForDomain(fqdn, option)
-		if err != errRecordNotFound {
-			log.Record(&log.DNSLog{Server: s.name, Domain: domain, Result: ips, Status: log.DNSQueried, Elapsed: time.Since(start), Error: err})
-			return ips, err
-		}
-
-		select {
-		case <-ctx.Done():
-			return nil, ctx.Err()
-		case <-done:
-		}
-	}
+func (s *ClassicNameServer) QueryIP(ctx context.Context, domain string, option dns_feature.IPOption) ([]net.IP, uint32, error) {
+	return queryIP(ctx, s, domain, option)
 }

app/geodata/config.pb.go

@@ -0,0 +1,198 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.36.11
+// 	protoc        v6.33.5
+// source: app/geodata/config.proto
+
+package geodata
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+	unsafe "unsafe"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+type Asset struct {
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	Url           string                 `protobuf:"bytes,1,opt,name=url,proto3" json:"url,omitempty"`
+	File          string                 `protobuf:"bytes,2,opt,name=file,proto3" json:"file,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *Asset) Reset() {
+	*x = Asset{}
+	mi := &file_app_geodata_config_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *Asset) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Asset) ProtoMessage() {}
+
+func (x *Asset) ProtoReflect() protoreflect.Message {
+	mi := &file_app_geodata_config_proto_msgTypes[0]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Asset.ProtoReflect.Descriptor instead.
+func (*Asset) Descriptor() ([]byte, []int) {
+	return file_app_geodata_config_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *Asset) GetUrl() string {
+	if x != nil {
+		return x.Url
+	}
+	return ""
+}
+
+func (x *Asset) GetFile() string {
+	if x != nil {
+		return x.File
+	}
+	return ""
+}
+
+type Config struct {
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	Cron          string                 `protobuf:"bytes,1,opt,name=cron,proto3" json:"cron,omitempty"`
+	Outbound      string                 `protobuf:"bytes,2,opt,name=outbound,proto3" json:"outbound,omitempty"`
+	Assets        []*Asset               `protobuf:"bytes,3,rep,name=assets,proto3" json:"assets,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *Config) Reset() {
+	*x = Config{}
+	mi := &file_app_geodata_config_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *Config) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Config) ProtoMessage() {}
+
+func (x *Config) ProtoReflect() protoreflect.Message {
+	mi := &file_app_geodata_config_proto_msgTypes[1]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Config.ProtoReflect.Descriptor instead.
+func (*Config) Descriptor() ([]byte, []int) {
+	return file_app_geodata_config_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *Config) GetCron() string {
+	if x != nil {
+		return x.Cron
+	}
+	return ""
+}
+
+func (x *Config) GetOutbound() string {
+	if x != nil {
+		return x.Outbound
+	}
+	return ""
+}
+
+func (x *Config) GetAssets() []*Asset {
+	if x != nil {
+		return x.Assets
+	}
+	return nil
+}
+
+var File_app_geodata_config_proto protoreflect.FileDescriptor
+
+const file_app_geodata_config_proto_rawDesc = "" +
+	"\n" +
+	"\x18app/geodata/config.proto\x12\x10xray.app.geodata\"-\n" +
+	"\x05Asset\x12\x10\n" +
+	"\x03url\x18\x01 \x01(\tR\x03url\x12\x12\n" +
+	"\x04file\x18\x02 \x01(\tR\x04file\"i\n" +
+	"\x06Config\x12\x12\n" +
+	"\x04cron\x18\x01 \x01(\tR\x04cron\x12\x1a\n" +
+	"\boutbound\x18\x02 \x01(\tR\boutbound\x12/\n" +
+	"\x06assets\x18\x03 \x03(\v2\x17.xray.app.geodata.AssetR\x06assetsBR\n" +
+	"\x14com.xray.app.geodataP\x01Z%github.com/xtls/xray-core/app/geodata\xaa\x02\x10Xray.App.Geodatab\x06proto3"
+
+var (
+	file_app_geodata_config_proto_rawDescOnce sync.Once
+	file_app_geodata_config_proto_rawDescData []byte
+)
+
+func file_app_geodata_config_proto_rawDescGZIP() []byte {
+	file_app_geodata_config_proto_rawDescOnce.Do(func() {
+		file_app_geodata_config_proto_rawDescData = protoimpl.X.CompressGZIP(unsafe.Slice(unsafe.StringData(file_app_geodata_config_proto_rawDesc), len(file_app_geodata_config_proto_rawDesc)))
+	})
+	return file_app_geodata_config_proto_rawDescData
+}
+
+var file_app_geodata_config_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
+var file_app_geodata_config_proto_goTypes = []any{
+	(*Asset)(nil),  // 0: xray.app.geodata.Asset
+	(*Config)(nil), // 1: xray.app.geodata.Config
+}
+var file_app_geodata_config_proto_depIdxs = []int32{
+	0, // 0: xray.app.geodata.Config.assets:type_name -> xray.app.geodata.Asset
+	1, // [1:1] is the sub-list for method output_type
+	1, // [1:1] is the sub-list for method input_type
+	1, // [1:1] is the sub-list for extension type_name
+	1, // [1:1] is the sub-list for extension extendee
+	0, // [0:1] is the sub-list for field type_name
+}
+
+func init() { file_app_geodata_config_proto_init() }
+func file_app_geodata_config_proto_init() {
+	if File_app_geodata_config_proto != nil {
+		return
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: unsafe.Slice(unsafe.StringData(file_app_geodata_config_proto_rawDesc), len(file_app_geodata_config_proto_rawDesc)),
+			NumEnums:      0,
+			NumMessages:   2,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_app_geodata_config_proto_goTypes,
+		DependencyIndexes: file_app_geodata_config_proto_depIdxs,
+		MessageInfos:      file_app_geodata_config_proto_msgTypes,
+	}.Build()
+	File_app_geodata_config_proto = out.File
+	file_app_geodata_config_proto_goTypes = nil
+	file_app_geodata_config_proto_depIdxs = nil
+}

app/geodata/config.proto

@@ -0,0 +1,21 @@
+syntax = "proto3";
+
+package xray.app.geodata;
+option csharp_namespace = "Xray.App.Geodata";
+option go_package = "github.com/xtls/xray-core/app/geodata";
+option java_package = "com.xray.app.geodata";
+option java_multiple_files = true;
+
+message Asset {
+  string url = 1;
+
+  string file = 2;
+}
+
+message Config {
+  string cron = 1;
+
+  string outbound = 2;
+
+  repeated Asset assets = 3;
+}

app/geodata/download.go

@@ -0,0 +1,346 @@
+package geodata
+
+import (
+	"context"
+	"crypto/tls"
+	go_errors "errors"
+	"io"
+	"net/http"
+	"os"
+	"path/filepath"
+	"time"
+
+	utls "github.com/refraction-networking/utls"
+	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/common/platform/filesystem"
+	"github.com/xtls/xray-core/common/task"
+	"github.com/xtls/xray-core/common/utils"
+	"github.com/xtls/xray-core/features/routing"
+	"github.com/xtls/xray-core/transport/internet/tagged"
+	"golang.org/x/net/http2"
+)
+
+const idleTimeout = 30 * time.Second
+
+type stage struct {
+	target string
+	temp   string
+}
+
+type downloader struct {
+	ctx         context.Context
+	httpClient  *http.Client
+	httpsClient *http.Client
+}
+
+type idleConn struct {
+	net.Conn
+}
+
+func (c *idleConn) Read(b []byte) (int, error) {
+	t := time.AfterFunc(idleTimeout, func() {
+		_ = c.Close()
+	})
+
+	n, err := c.Conn.Read(b)
+	if !t.Stop() {
+		_ = c.Close()
+		return n, errors.New("connection idle timeout")
+	}
+	return n, err
+}
+
+func (c *idleConn) Write(b []byte) (int, error) {
+	return c.Conn.Write(b)
+}
+
+func newDownloader(ctx context.Context, dispatcher routing.Dispatcher, outbound string) *downloader {
+	return &downloader{
+		ctx:         ctx,
+		httpClient:  newClient(ctx, dispatcher, outbound, false),
+		httpsClient: newClient(ctx, dispatcher, outbound, true),
+	}
+}
+
+func newClient(baseCtx context.Context, dispatcher routing.Dispatcher, outbound string, isHTTPS bool) *http.Client {
+	dial := func(ctx context.Context, network, address string) (net.Conn, error) {
+		var conn net.Conn
+		err := task.Run(ctx, func() error {
+			if tagged.Dialer == nil {
+				return errors.New("tagged dialer is not initialized")
+			}
+			dest, err := net.ParseDestination(network + ":" + address)
+			if err != nil {
+				return errors.New("cannot understand address").Base(err)
+			}
+			c, err := tagged.Dialer(baseCtx, dispatcher, dest, outbound)
+			if err != nil {
+				return errors.New("cannot dial remote address ", dest).Base(err)
+			}
+			conn = c
+			return nil
+		})
+		if err != nil {
+			return nil, errors.New("cannot finish connection").Base(err)
+		}
+		return &idleConn{
+			Conn: conn,
+		}, nil
+	}
+	if isHTTPS {
+		return &http.Client{
+			Transport: &http2.Transport{
+				DialTLSContext: func(ctx context.Context, network string, address string, cfg *tls.Config) (net.Conn, error) {
+					conn, err := dial(ctx, network, address)
+					if err != nil {
+						return nil, err
+					}
+					host, _, _ := net.SplitHostPort(address)
+					tlsConn := utls.UClient(conn, &utls.Config{ServerName: host}, utls.HelloChrome_Auto)
+					handshakeCtx, cancel := context.WithTimeout(ctx, idleTimeout)
+					defer cancel()
+					if err := tlsConn.HandshakeContext(handshakeCtx); err != nil {
+						conn.Close()
+						return nil, err
+					}
+					return tlsConn, nil
+				},
+			},
+			CheckRedirect: func(req *http.Request, via []*http.Request) error {
+				if req.URL.Scheme != "https" {
+					return errors.New("redirected to non-https URL: ", req.URL.String())
+				}
+				if len(via) >= 10 {
+					return errors.New("stopped after 10 redirects")
+				}
+				return nil
+			},
+		}
+	} else {
+		return &http.Client{
+			Transport: &http.Transport{
+				Proxy:                 nil,
+				DisableKeepAlives:     true,
+				DialContext:           dial,
+				ResponseHeaderTimeout: idleTimeout,
+			},
+			CheckRedirect: func(req *http.Request, via []*http.Request) error {
+				if req.URL.Scheme != "https" {
+					return errors.New("redirected to non-https URL: ", req.URL.String())
+				}
+				if len(via) >= 10 {
+					return errors.New("stopped after 10 redirects")
+				}
+				return nil
+			},
+		}
+	}
+}
+
+func (d *downloader) download(assets []*Asset) ([]stage, error) {
+	staged := make([]stage, 0, len(assets))
+	for _, asset := range assets {
+		stage, err := d.downloadOne(asset)
+		if err != nil {
+			clean(staged)
+			return nil, err
+		}
+		staged = append(staged, stage)
+	}
+	return staged, nil
+}
+
+func (d *downloader) downloadOne(asset *Asset) (stage, error) {
+	target, err := filesystem.ResolveAsset(asset.File)
+	if err != nil {
+		return stage{}, err
+	}
+	errors.LogInfo(d.ctx, "downloading geodata asset from ", asset.Url, " to ", target)
+
+	temp, err := tempFile(target, ".tmp")
+	if err != nil {
+		return stage{}, err
+	}
+	tempName := temp.Name()
+	keepTemp := false
+	defer func() {
+		if !keepTemp {
+			os.Remove(tempName)
+		}
+	}()
+
+	if err := d.fetch(asset.Url, temp); err != nil {
+		temp.Close()
+		return stage{}, err
+	}
+	if err := temp.Chmod(0o644); err != nil {
+		temp.Close()
+		return stage{}, err
+	}
+	if err := temp.Close(); err != nil {
+		return stage{}, err
+	}
+
+	keepTemp = true
+	return stage{
+		target: target,
+		temp:   tempName,
+	}, nil
+}
+
+func (d *downloader) fetch(rawURL string, writer io.Writer) error {
+	req, err := http.NewRequestWithContext(d.ctx, http.MethodGet, rawURL, nil)
+	if err != nil {
+		return err
+	}
+	utils.TryDefaultHeadersWith(req.Header, "nav")
+
+	var client *http.Client
+	if req.URL.Scheme == "https" {
+		client = d.httpsClient
+	} else {
+		client = d.httpClient
+	}
+	resp, err := client.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode < http.StatusOK || resp.StatusCode >= http.StatusMultipleChoices {
+		io.Copy(io.Discard, resp.Body)
+		return errors.New("unexpected status code: ", resp.StatusCode)
+	}
+
+	n, err := io.Copy(writer, resp.Body)
+	if err != nil {
+		return err
+	}
+	if n == 0 {
+		return errors.New("empty response body")
+	}
+	return nil
+}
+
+func clean(assets []stage) {
+	for _, asset := range assets {
+		if asset.temp != "" {
+			os.Remove(asset.temp)
+		}
+	}
+}
+
+type tx struct {
+	swaps []swap
+}
+
+type swap struct {
+	target      string
+	backup      string
+	hadOriginal bool
+}
+
+func swapAll(assets []stage) (*tx, error) {
+	t := &tx{}
+	for _, asset := range assets {
+		s, err := swapOne(asset)
+		if err != nil {
+			return nil, errors.Combine(err, t.rollback())
+		}
+		t.swaps = append(t.swaps, s)
+	}
+	return t, nil
+}
+
+func swapOne(asset stage) (swap, error) {
+	backup, err := backupFile(asset.target)
+	if err != nil {
+		return swap{}, err
+	}
+
+	s := swap{
+		target: asset.target,
+		backup: backup,
+	}
+	if err := os.Rename(asset.target, backup); err != nil {
+		if !go_errors.Is(err, os.ErrNotExist) {
+			return swap{}, err
+		}
+		if err := os.Remove(backup); err != nil && !go_errors.Is(err, os.ErrNotExist) {
+			return swap{}, err
+		}
+	} else {
+		s.hadOriginal = true
+	}
+
+	if err := os.Rename(asset.temp, asset.target); err != nil {
+		if s.hadOriginal {
+			if restoreErr := os.Rename(backup, asset.target); restoreErr != nil {
+				return swap{}, errors.Combine(err, restoreErr)
+			}
+		}
+		return swap{}, err
+	}
+
+	return s, nil
+}
+
+func (t *tx) rollback() error {
+	var errs []error
+	for i := len(t.swaps) - 1; i >= 0; i-- {
+		if err := t.swaps[i].rollback(); err != nil {
+			errs = append(errs, err)
+		}
+	}
+	return errors.Combine(errs...)
+}
+
+func (s swap) rollback() error {
+	var errs []error
+	if err := os.Remove(s.target); err != nil && !go_errors.Is(err, os.ErrNotExist) {
+		errs = append(errs, err)
+	}
+	if s.hadOriginal {
+		if err := os.Rename(s.backup, s.target); err != nil {
+			errs = append(errs, err)
+		}
+	} else if err := os.Remove(s.backup); err != nil && !go_errors.Is(err, os.ErrNotExist) {
+		errs = append(errs, err)
+	}
+	return errors.Combine(errs...)
+}
+
+func (t *tx) commit() error {
+	var errs []error
+	for _, swap := range t.swaps {
+		if err := os.Remove(swap.backup); err != nil && !go_errors.Is(err, os.ErrNotExist) {
+			errs = append(errs, err)
+		}
+	}
+	return errors.Combine(errs...)
+}
+
+func tempFile(target string, suffix string) (*os.File, error) {
+	dir := filepath.Dir(target)
+	if err := os.MkdirAll(dir, 0o755); err != nil {
+		return nil, err
+	}
+	return os.CreateTemp(dir, "."+filepath.Base(target)+".*"+suffix)
+}
+
+func backupFile(target string) (string, error) {
+	file, err := tempFile(target, ".bak")
+	if err != nil {
+		return "", err
+	}
+	name := file.Name()
+	if err := file.Close(); err != nil {
+		os.Remove(name)
+		return "", err
+	}
+	if err := os.Remove(name); err != nil {
+		return "", err
+	}
+	return name, nil
+}

app/geodata/geodata.go

@@ -0,0 +1,134 @@
+package geodata
+
+import (
+	"context"
+	"sync"
+
+	"github.com/robfig/cron/v3"
+	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
+	commongeodata "github.com/xtls/xray-core/common/geodata"
+	"github.com/xtls/xray-core/core"
+	"github.com/xtls/xray-core/features/routing"
+)
+
+type Instance struct {
+	assets     []*Asset
+	downloader *downloader
+	tasker     *cron.Cron
+
+	mu      sync.Mutex
+	running bool
+}
+
+func New(ctx context.Context, config *Config) (*Instance, error) {
+	if config.Cron == "" {
+		return &Instance{}, nil
+	}
+
+	g := &Instance{
+		assets: config.Assets,
+	}
+
+	if len(g.assets) > 0 {
+		var dispatcher routing.Dispatcher
+		if err := core.RequireFeatures(ctx, func(d routing.Dispatcher) {
+			dispatcher = d
+		}); err != nil {
+			return nil, errors.New("failed to get dispatcher for geodata downloader").Base(err)
+		}
+		g.downloader = newDownloader(ctx, dispatcher, config.Outbound)
+	}
+
+	g.tasker = cron.New(
+		cron.WithChain(cron.SkipIfStillRunning(cron.DiscardLogger)),
+		cron.WithLogger(cron.DiscardLogger),
+	)
+	if _, err := g.tasker.AddFunc(config.Cron, g.execute); err != nil {
+		return nil, errors.New("invalid geodata cron").Base(err)
+	}
+	errors.LogInfo(ctx, "scheduled geodata reload with cron: ", config.Cron)
+
+	return g, nil
+}
+
+func (g *Instance) execute() {
+	var err error
+	if g.downloader != nil {
+		err = g.reloadWithUpdate()
+	} else {
+		err = reload()
+	}
+	if err != nil {
+		errors.LogErrorInner(context.Background(), err, "scheduled geodata reload failed")
+	}
+}
+
+func (g *Instance) reloadWithUpdate() error {
+	staged, err := g.downloader.download(g.assets)
+	if err != nil {
+		return err
+	}
+	defer clean(staged)
+
+	tx, err := swapAll(staged)
+	if err != nil {
+		return err
+	}
+
+	if err := reload(); err != nil {
+		errors.LogErrorInner(context.Background(), err, "failed to reload geodata after downloading assets, rolling back")
+		rollbackErr := tx.rollback()
+		return errors.Combine(err, rollbackErr)
+	}
+
+	return tx.commit()
+}
+
+func reload() error {
+	return errors.Combine(commongeodata.IPReg.Reload(), commongeodata.DomainReg.Reload())
+}
+
+func (g *Instance) Type() interface{} {
+	return (*Instance)(nil)
+}
+
+func (g *Instance) Start() error {
+	g.mu.Lock()
+	defer g.mu.Unlock()
+
+	if g.running {
+		return nil
+	}
+
+	if g.tasker != nil {
+		g.tasker.Start()
+	}
+
+	g.running = true
+
+	return nil
+}
+
+func (g *Instance) Close() error {
+	g.mu.Lock()
+	defer g.mu.Unlock()
+
+	if !g.running {
+		return nil
+	}
+
+	if g.tasker != nil {
+		<-g.tasker.Stop().Done()
+	}
+
+	g.running = false
+
+	return nil
+}
+
+func init() {
+	common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, cfg interface{}) (interface{}, error) {
+		return New(ctx, cfg.(*Config))
+	}))
+}

app/log/command/command.go

@@ -1,7 +1,5 @@
 package command
 
-//go:generate go run github.com/xtls/xray-core/common/errors/errorgen
-
 import (
 	"context"
 

app/log/command/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.1
-// 	protoc        v5.27.0
+// 	protoc-gen-go v1.36.11
+// 	protoc        v6.33.5
 // source: app/log/command/config.proto
 
 package command
@@ -11,6 +11,7 @@ import (
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	reflect "reflect"
 	sync "sync"
+	unsafe "unsafe"
 )
 
 const (
@@ -21,18 +22,16 @@ const (
 )
 
 type Config struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
+	state         protoimpl.MessageState `protogen:"open.v1"`
 	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *Config) Reset() {
 	*x = Config{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_log_command_config_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_log_command_config_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Config) String() string {
@@ -43,7 +42,7 @@ func (*Config) ProtoMessage() {}
 
 func (x *Config) ProtoReflect() protoreflect.Message {
 	mi := &file_app_log_command_config_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -59,18 +58,16 @@ func (*Config) Descriptor() ([]byte, []int) {
 }
 
 type RestartLoggerRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
+	state         protoimpl.MessageState `protogen:"open.v1"`
 	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *RestartLoggerRequest) Reset() {
 	*x = RestartLoggerRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_log_command_config_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_log_command_config_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *RestartLoggerRequest) String() string {
@@ -81,7 +78,7 @@ func (*RestartLoggerRequest) ProtoMessage() {}
 
 func (x *RestartLoggerRequest) ProtoReflect() protoreflect.Message {
 	mi := &file_app_log_command_config_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -97,18 +94,16 @@ func (*RestartLoggerRequest) Descriptor() ([]byte, []int) {
 }
 
 type RestartLoggerResponse struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
+	state         protoimpl.MessageState `protogen:"open.v1"`
 	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *RestartLoggerResponse) Reset() {
 	*x = RestartLoggerResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_log_command_config_proto_msgTypes[2]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_log_command_config_proto_msgTypes[2]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *RestartLoggerResponse) String() string {
@@ -119,7 +114,7 @@ func (*RestartLoggerResponse) ProtoMessage() {}
 
 func (x *RestartLoggerResponse) ProtoReflect() protoreflect.Message {
 	mi := &file_app_log_command_config_proto_msgTypes[2]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -136,45 +131,30 @@ func (*RestartLoggerResponse) Descriptor() ([]byte, []int) {
 
 var File_app_log_command_config_proto protoreflect.FileDescriptor
 
-var file_app_log_command_config_proto_rawDesc = []byte{
-	0x0a, 0x1c, 0x61, 0x70, 0x70, 0x2f, 0x6c, 0x6f, 0x67, 0x2f, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e,
-	0x64, 0x2f, 0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x14,
-	0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x6c, 0x6f, 0x67, 0x2e, 0x63, 0x6f, 0x6d,
-	0x6d, 0x61, 0x6e, 0x64, 0x22, 0x08, 0x0a, 0x06, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x22, 0x16,
-	0x0a, 0x14, 0x52, 0x65, 0x73, 0x74, 0x61, 0x72, 0x74, 0x4c, 0x6f, 0x67, 0x67, 0x65, 0x72, 0x52,
-	0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x22, 0x17, 0x0a, 0x15, 0x52, 0x65, 0x73, 0x74, 0x61, 0x72,
-	0x74, 0x4c, 0x6f, 0x67, 0x67, 0x65, 0x72, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x32,
-	0x7b, 0x0a, 0x0d, 0x4c, 0x6f, 0x67, 0x67, 0x65, 0x72, 0x53, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65,
-	0x12, 0x6a, 0x0a, 0x0d, 0x52, 0x65, 0x73, 0x74, 0x61, 0x72, 0x74, 0x4c, 0x6f, 0x67, 0x67, 0x65,
-	0x72, 0x12, 0x2a, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x6c, 0x6f, 0x67,
-	0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x2e, 0x52, 0x65, 0x73, 0x74, 0x61, 0x72, 0x74,
-	0x4c, 0x6f, 0x67, 0x67, 0x65, 0x72, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x2b, 0x2e,
-	0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x6c, 0x6f, 0x67, 0x2e, 0x63, 0x6f, 0x6d,
-	0x6d, 0x61, 0x6e, 0x64, 0x2e, 0x52, 0x65, 0x73, 0x74, 0x61, 0x72, 0x74, 0x4c, 0x6f, 0x67, 0x67,
-	0x65, 0x72, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x42, 0x5e, 0x0a, 0x18,
-	0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x6c, 0x6f, 0x67,
-	0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x50, 0x01, 0x5a, 0x29, 0x67, 0x69, 0x74, 0x68,
-	0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79,
-	0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x61, 0x70, 0x70, 0x2f, 0x6c, 0x6f, 0x67, 0x2f, 0x63, 0x6f,
-	0x6d, 0x6d, 0x61, 0x6e, 0x64, 0xaa, 0x02, 0x14, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x41, 0x70, 0x70,
-	0x2e, 0x4c, 0x6f, 0x67, 0x2e, 0x43, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x62, 0x06, 0x70, 0x72,
-	0x6f, 0x74, 0x6f, 0x33,
-}
+const file_app_log_command_config_proto_rawDesc = "" +
+	"\n" +
+	"\x1capp/log/command/config.proto\x12\x14xray.app.log.command\"\b\n" +
+	"\x06Config\"\x16\n" +
+	"\x14RestartLoggerRequest\"\x17\n" +
+	"\x15RestartLoggerResponse2{\n" +
+	"\rLoggerService\x12j\n" +
+	"\rRestartLogger\x12*.xray.app.log.command.RestartLoggerRequest\x1a+.xray.app.log.command.RestartLoggerResponse\"\x00B^\n" +
+	"\x18com.xray.app.log.commandP\x01Z)github.com/xtls/xray-core/app/log/command\xaa\x02\x14Xray.App.Log.Commandb\x06proto3"
 
 var (
 	file_app_log_command_config_proto_rawDescOnce sync.Once
-	file_app_log_command_config_proto_rawDescData = file_app_log_command_config_proto_rawDesc
+	file_app_log_command_config_proto_rawDescData []byte
 )
 
 func file_app_log_command_config_proto_rawDescGZIP() []byte {
 	file_app_log_command_config_proto_rawDescOnce.Do(func() {
-		file_app_log_command_config_proto_rawDescData = protoimpl.X.CompressGZIP(file_app_log_command_config_proto_rawDescData)
+		file_app_log_command_config_proto_rawDescData = protoimpl.X.CompressGZIP(unsafe.Slice(unsafe.StringData(file_app_log_command_config_proto_rawDesc), len(file_app_log_command_config_proto_rawDesc)))
 	})
 	return file_app_log_command_config_proto_rawDescData
 }
 
 var file_app_log_command_config_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
-var file_app_log_command_config_proto_goTypes = []interface{}{
+var file_app_log_command_config_proto_goTypes = []any{
 	(*Config)(nil),                // 0: xray.app.log.command.Config
 	(*RestartLoggerRequest)(nil),  // 1: xray.app.log.command.RestartLoggerRequest
 	(*RestartLoggerResponse)(nil), // 2: xray.app.log.command.RestartLoggerResponse
@@ -194,49 +174,11 @@ func file_app_log_command_config_proto_init() {
 	if File_app_log_command_config_proto != nil {
 		return
 	}
-	if !protoimpl.UnsafeEnabled {
-		file_app_log_command_config_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Config); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_log_command_config_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*RestartLoggerRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_log_command_config_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*RestartLoggerResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_app_log_command_config_proto_rawDesc,
+			RawDescriptor: unsafe.Slice(unsafe.StringData(file_app_log_command_config_proto_rawDesc), len(file_app_log_command_config_proto_rawDesc)),
 			NumEnums:      0,
 			NumMessages:   3,
 			NumExtensions: 0,
@@ -247,7 +189,6 @@ func file_app_log_command_config_proto_init() {
 		MessageInfos:      file_app_log_command_config_proto_msgTypes,
 	}.Build()
 	File_app_log_command_config_proto = out.File
-	file_app_log_command_config_proto_rawDesc = nil
 	file_app_log_command_config_proto_goTypes = nil
 	file_app_log_command_config_proto_depIdxs = nil
 }

app/log/command/config_grpc.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
 // versions:
-// - protoc-gen-go-grpc v1.3.0
-// - protoc             v5.27.0
+// - protoc-gen-go-grpc v1.6.0
+// - protoc             v6.33.5
 // source: app/log/command/config.proto
 
 package command
@@ -15,8 +15,8 @@ import (
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the grpc package it is being compiled against.
-// Requires gRPC-Go v1.32.0 or later.
-const _ = grpc.SupportPackageIsVersion7
+// Requires gRPC-Go v1.64.0 or later.
+const _ = grpc.SupportPackageIsVersion9
 
 const (
 	LoggerService_RestartLogger_FullMethodName = "/xray.app.log.command.LoggerService/RestartLogger"
@@ -38,8 +38,9 @@ func NewLoggerServiceClient(cc grpc.ClientConnInterface) LoggerServiceClient {
 }
 
 func (c *loggerServiceClient) RestartLogger(ctx context.Context, in *RestartLoggerRequest, opts ...grpc.CallOption) (*RestartLoggerResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	out := new(RestartLoggerResponse)
-	err := c.cc.Invoke(ctx, LoggerService_RestartLogger_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, LoggerService_RestartLogger_FullMethodName, in, out, cOpts...)
 	if err != nil {
 		return nil, err
 	}
@@ -48,20 +49,24 @@ func (c *loggerServiceClient) RestartLogger(ctx context.Context, in *RestartLogg
 
 // LoggerServiceServer is the server API for LoggerService service.
 // All implementations must embed UnimplementedLoggerServiceServer
-// for forward compatibility
+// for forward compatibility.
 type LoggerServiceServer interface {
 	RestartLogger(context.Context, *RestartLoggerRequest) (*RestartLoggerResponse, error)
 	mustEmbedUnimplementedLoggerServiceServer()
 }
 
-// UnimplementedLoggerServiceServer must be embedded to have forward compatible implementations.
-type UnimplementedLoggerServiceServer struct {
-}
+// UnimplementedLoggerServiceServer must be embedded to have
+// forward compatible implementations.
+//
+// NOTE: this should be embedded by value instead of pointer to avoid a nil
+// pointer dereference when methods are called.
+type UnimplementedLoggerServiceServer struct{}
 
 func (UnimplementedLoggerServiceServer) RestartLogger(context.Context, *RestartLoggerRequest) (*RestartLoggerResponse, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method RestartLogger not implemented")
+	return nil, status.Error(codes.Unimplemented, "method RestartLogger not implemented")
 }
 func (UnimplementedLoggerServiceServer) mustEmbedUnimplementedLoggerServiceServer() {}
+func (UnimplementedLoggerServiceServer) testEmbeddedByValue()                       {}
 
 // UnsafeLoggerServiceServer may be embedded to opt out of forward compatibility for this service.
 // Use of this interface is not recommended, as added methods to LoggerServiceServer will
@@ -71,6 +76,13 @@ type UnsafeLoggerServiceServer interface {
 }
 
 func RegisterLoggerServiceServer(s grpc.ServiceRegistrar, srv LoggerServiceServer) {
+	// If the following call panics, it indicates UnimplementedLoggerServiceServer was
+	// embedded by pointer and is nil.  This will cause panics if an
+	// unimplemented method is ever invoked, so we test this at initialization
+	// time to prevent it from happening at runtime later due to I/O.
+	if t, ok := srv.(interface{ testEmbeddedByValue() }); ok {
+		t.testEmbeddedByValue()
+	}
 	s.RegisterService(&LoggerService_ServiceDesc, srv)
 }
 

app/log/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.1
-// 	protoc        v5.27.0
+// 	protoc-gen-go v1.36.11
+// 	protoc        v6.33.5
 // source: app/log/config.proto
 
 package log
@@ -12,6 +12,7 @@ import (
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	reflect "reflect"
 	sync "sync"
+	unsafe "unsafe"
 )
 
 const (
@@ -74,25 +75,23 @@ func (LogType) EnumDescriptor() ([]byte, []int) {
 }
 
 type Config struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	ErrorLogType  LogType                `protobuf:"varint,1,opt,name=error_log_type,json=errorLogType,proto3,enum=xray.app.log.LogType" json:"error_log_type,omitempty"`
+	ErrorLogLevel log.Severity           `protobuf:"varint,2,opt,name=error_log_level,json=errorLogLevel,proto3,enum=xray.common.log.Severity" json:"error_log_level,omitempty"`
+	ErrorLogPath  string                 `protobuf:"bytes,3,opt,name=error_log_path,json=errorLogPath,proto3" json:"error_log_path,omitempty"`
+	AccessLogType LogType                `protobuf:"varint,4,opt,name=access_log_type,json=accessLogType,proto3,enum=xray.app.log.LogType" json:"access_log_type,omitempty"`
+	AccessLogPath string                 `protobuf:"bytes,5,opt,name=access_log_path,json=accessLogPath,proto3" json:"access_log_path,omitempty"`
+	EnableDnsLog  bool                   `protobuf:"varint,6,opt,name=enable_dns_log,json=enableDnsLog,proto3" json:"enable_dns_log,omitempty"`
+	MaskAddress   string                 `protobuf:"bytes,7,opt,name=mask_address,json=maskAddress,proto3" json:"mask_address,omitempty"`
 	unknownFields protoimpl.UnknownFields
-
-	ErrorLogType  LogType      `protobuf:"varint,1,opt,name=error_log_type,json=errorLogType,proto3,enum=xray.app.log.LogType" json:"error_log_type,omitempty"`
-	ErrorLogLevel log.Severity `protobuf:"varint,2,opt,name=error_log_level,json=errorLogLevel,proto3,enum=xray.common.log.Severity" json:"error_log_level,omitempty"`
-	ErrorLogPath  string       `protobuf:"bytes,3,opt,name=error_log_path,json=errorLogPath,proto3" json:"error_log_path,omitempty"`
-	AccessLogType LogType      `protobuf:"varint,4,opt,name=access_log_type,json=accessLogType,proto3,enum=xray.app.log.LogType" json:"access_log_type,omitempty"`
-	AccessLogPath string       `protobuf:"bytes,5,opt,name=access_log_path,json=accessLogPath,proto3" json:"access_log_path,omitempty"`
-	EnableDnsLog  bool         `protobuf:"varint,6,opt,name=enable_dns_log,json=enableDnsLog,proto3" json:"enable_dns_log,omitempty"`
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *Config) Reset() {
 	*x = Config{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_log_config_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_log_config_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Config) String() string {
@@ -103,7 +102,7 @@ func (*Config) ProtoMessage() {}
 
 func (x *Config) ProtoReflect() protoreflect.Message {
 	mi := &file_app_log_config_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -160,58 +159,48 @@ func (x *Config) GetEnableDnsLog() bool {
 	return false
 }
 
+func (x *Config) GetMaskAddress() string {
+	if x != nil {
+		return x.MaskAddress
+	}
+	return ""
+}
+
 var File_app_log_config_proto protoreflect.FileDescriptor
 
-var file_app_log_config_proto_rawDesc = []byte{
-	0x0a, 0x14, 0x61, 0x70, 0x70, 0x2f, 0x6c, 0x6f, 0x67, 0x2f, 0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67,
-	0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x0c, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70,
-	0x2e, 0x6c, 0x6f, 0x67, 0x1a, 0x14, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2f, 0x6c, 0x6f, 0x67,
-	0x2f, 0x6c, 0x6f, 0x67, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0xbb, 0x02, 0x0a, 0x06, 0x43,
-	0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x3b, 0x0a, 0x0e, 0x65, 0x72, 0x72, 0x6f, 0x72, 0x5f, 0x6c,
-	0x6f, 0x67, 0x5f, 0x74, 0x79, 0x70, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0e, 0x32, 0x15, 0x2e,
-	0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x6c, 0x6f, 0x67, 0x2e, 0x4c, 0x6f, 0x67,
-	0x54, 0x79, 0x70, 0x65, 0x52, 0x0c, 0x65, 0x72, 0x72, 0x6f, 0x72, 0x4c, 0x6f, 0x67, 0x54, 0x79,
-	0x70, 0x65, 0x12, 0x41, 0x0a, 0x0f, 0x65, 0x72, 0x72, 0x6f, 0x72, 0x5f, 0x6c, 0x6f, 0x67, 0x5f,
-	0x6c, 0x65, 0x76, 0x65, 0x6c, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0e, 0x32, 0x19, 0x2e, 0x78, 0x72,
-	0x61, 0x79, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x6c, 0x6f, 0x67, 0x2e, 0x53, 0x65,
-	0x76, 0x65, 0x72, 0x69, 0x74, 0x79, 0x52, 0x0d, 0x65, 0x72, 0x72, 0x6f, 0x72, 0x4c, 0x6f, 0x67,
-	0x4c, 0x65, 0x76, 0x65, 0x6c, 0x12, 0x24, 0x0a, 0x0e, 0x65, 0x72, 0x72, 0x6f, 0x72, 0x5f, 0x6c,
-	0x6f, 0x67, 0x5f, 0x70, 0x61, 0x74, 0x68, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0c, 0x65,
-	0x72, 0x72, 0x6f, 0x72, 0x4c, 0x6f, 0x67, 0x50, 0x61, 0x74, 0x68, 0x12, 0x3d, 0x0a, 0x0f, 0x61,
-	0x63, 0x63, 0x65, 0x73, 0x73, 0x5f, 0x6c, 0x6f, 0x67, 0x5f, 0x74, 0x79, 0x70, 0x65, 0x18, 0x04,
-	0x20, 0x01, 0x28, 0x0e, 0x32, 0x15, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e,
-	0x6c, 0x6f, 0x67, 0x2e, 0x4c, 0x6f, 0x67, 0x54, 0x79, 0x70, 0x65, 0x52, 0x0d, 0x61, 0x63, 0x63,
-	0x65, 0x73, 0x73, 0x4c, 0x6f, 0x67, 0x54, 0x79, 0x70, 0x65, 0x12, 0x26, 0x0a, 0x0f, 0x61, 0x63,
-	0x63, 0x65, 0x73, 0x73, 0x5f, 0x6c, 0x6f, 0x67, 0x5f, 0x70, 0x61, 0x74, 0x68, 0x18, 0x05, 0x20,
-	0x01, 0x28, 0x09, 0x52, 0x0d, 0x61, 0x63, 0x63, 0x65, 0x73, 0x73, 0x4c, 0x6f, 0x67, 0x50, 0x61,
-	0x74, 0x68, 0x12, 0x24, 0x0a, 0x0e, 0x65, 0x6e, 0x61, 0x62, 0x6c, 0x65, 0x5f, 0x64, 0x6e, 0x73,
-	0x5f, 0x6c, 0x6f, 0x67, 0x18, 0x06, 0x20, 0x01, 0x28, 0x08, 0x52, 0x0c, 0x65, 0x6e, 0x61, 0x62,
-	0x6c, 0x65, 0x44, 0x6e, 0x73, 0x4c, 0x6f, 0x67, 0x2a, 0x35, 0x0a, 0x07, 0x4c, 0x6f, 0x67, 0x54,
-	0x79, 0x70, 0x65, 0x12, 0x08, 0x0a, 0x04, 0x4e, 0x6f, 0x6e, 0x65, 0x10, 0x00, 0x12, 0x0b, 0x0a,
-	0x07, 0x43, 0x6f, 0x6e, 0x73, 0x6f, 0x6c, 0x65, 0x10, 0x01, 0x12, 0x08, 0x0a, 0x04, 0x46, 0x69,
-	0x6c, 0x65, 0x10, 0x02, 0x12, 0x09, 0x0a, 0x05, 0x45, 0x76, 0x65, 0x6e, 0x74, 0x10, 0x03, 0x42,
-	0x46, 0x0a, 0x10, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e,
-	0x6c, 0x6f, 0x67, 0x50, 0x01, 0x5a, 0x21, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f,
-	0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65,
-	0x2f, 0x61, 0x70, 0x70, 0x2f, 0x6c, 0x6f, 0x67, 0xaa, 0x02, 0x0c, 0x58, 0x72, 0x61, 0x79, 0x2e,
-	0x41, 0x70, 0x70, 0x2e, 0x4c, 0x6f, 0x67, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
-}
+const file_app_log_config_proto_rawDesc = "" +
+	"\n" +
+	"\x14app/log/config.proto\x12\fxray.app.log\x1a\x14common/log/log.proto\"\xde\x02\n" +
+	"\x06Config\x12;\n" +
+	"\x0eerror_log_type\x18\x01 \x01(\x0e2\x15.xray.app.log.LogTypeR\ferrorLogType\x12A\n" +
+	"\x0ferror_log_level\x18\x02 \x01(\x0e2\x19.xray.common.log.SeverityR\rerrorLogLevel\x12$\n" +
+	"\x0eerror_log_path\x18\x03 \x01(\tR\ferrorLogPath\x12=\n" +
+	"\x0faccess_log_type\x18\x04 \x01(\x0e2\x15.xray.app.log.LogTypeR\raccessLogType\x12&\n" +
+	"\x0faccess_log_path\x18\x05 \x01(\tR\raccessLogPath\x12$\n" +
+	"\x0eenable_dns_log\x18\x06 \x01(\bR\fenableDnsLog\x12!\n" +
+	"\fmask_address\x18\a \x01(\tR\vmaskAddress*5\n" +
+	"\aLogType\x12\b\n" +
+	"\x04None\x10\x00\x12\v\n" +
+	"\aConsole\x10\x01\x12\b\n" +
+	"\x04File\x10\x02\x12\t\n" +
+	"\x05Event\x10\x03BF\n" +
+	"\x10com.xray.app.logP\x01Z!github.com/xtls/xray-core/app/log\xaa\x02\fXray.App.Logb\x06proto3"
 
 var (
 	file_app_log_config_proto_rawDescOnce sync.Once
-	file_app_log_config_proto_rawDescData = file_app_log_config_proto_rawDesc
+	file_app_log_config_proto_rawDescData []byte
 )
 
 func file_app_log_config_proto_rawDescGZIP() []byte {
 	file_app_log_config_proto_rawDescOnce.Do(func() {
-		file_app_log_config_proto_rawDescData = protoimpl.X.CompressGZIP(file_app_log_config_proto_rawDescData)
+		file_app_log_config_proto_rawDescData = protoimpl.X.CompressGZIP(unsafe.Slice(unsafe.StringData(file_app_log_config_proto_rawDesc), len(file_app_log_config_proto_rawDesc)))
 	})
 	return file_app_log_config_proto_rawDescData
 }
 
 var file_app_log_config_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
 var file_app_log_config_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
-var file_app_log_config_proto_goTypes = []interface{}{
+var file_app_log_config_proto_goTypes = []any{
 	(LogType)(0),      // 0: xray.app.log.LogType
 	(*Config)(nil),    // 1: xray.app.log.Config
 	(log.Severity)(0), // 2: xray.common.log.Severity
@@ -232,25 +221,11 @@ func file_app_log_config_proto_init() {
 	if File_app_log_config_proto != nil {
 		return
 	}
-	if !protoimpl.UnsafeEnabled {
-		file_app_log_config_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Config); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_app_log_config_proto_rawDesc,
+			RawDescriptor: unsafe.Slice(unsafe.StringData(file_app_log_config_proto_rawDesc), len(file_app_log_config_proto_rawDesc)),
 			NumEnums:      1,
 			NumMessages:   1,
 			NumExtensions: 0,
@@ -262,7 +237,6 @@ func file_app_log_config_proto_init() {
 		MessageInfos:      file_app_log_config_proto_msgTypes,
 	}.Build()
 	File_app_log_config_proto = out.File
-	file_app_log_config_proto_rawDesc = nil
 	file_app_log_config_proto_goTypes = nil
 	file_app_log_config_proto_depIdxs = nil
 }

app/log/config.proto

@@ -23,4 +23,5 @@ message Config {
   LogType access_log_type = 4;
   string access_log_path = 5;
   bool enable_dns_log = 6;
+  string mask_address= 7;
 }

app/log/log.go

@@ -1,9 +1,11 @@
 package log
 
-//go:generate go run github.com/xtls/xray-core/common/errors/errorgen
-
 import (
 	"context"
+	"net"
+	"regexp"
+	"strconv"
+	"strings"
 	"sync"
 
 	"github.com/xtls/xray-core/common"
@@ -19,19 +21,28 @@ type Instance struct {
 	errorLogger  log.Handler
 	active       bool
 	dns          bool
+	mask4        int
+	mask6        int
 }
 
 // New creates a new log.Instance based on the given config.
 func New(ctx context.Context, config *Config) (*Instance, error) {
+	m4, m6, err := ParseMaskAddress(config.MaskAddress)
+	if err != nil {
+		return nil, err
+	}
+
 	g := &Instance{
 		config: config,
 		active: false,
 		dns:    config.EnableDnsLog,
+		mask4:  m4,
+		mask6:  m6,
 	}
 	log.RegisterHandler(g)
 
-	// start logger instantly on inited
-	// other modules would log during init
+	// start logger now,
+	// then other modules will be able to log during initialization
 	if err := g.startInternal(); err != nil {
 		return nil, err
 	}
@@ -101,18 +112,29 @@ func (g *Instance) Handle(msg log.Message) {
 		return
 	}
 
+	var Msg log.Message
+	if g.config.MaskAddress != "" {
+		Msg = &MaskedMsgWrapper{
+			Message: msg,
+			Mask4:   g.mask4,
+			Mask6:   g.mask6,
+		}
+	} else {
+		Msg = msg
+	}
+
 	switch msg := msg.(type) {
 	case *log.AccessMessage:
 		if g.accessLogger != nil {
-			g.accessLogger.Handle(msg)
+			g.accessLogger.Handle(Msg)
 		}
 	case *log.DNSLog:
 		if g.dns && g.accessLogger != nil {
-			g.accessLogger.Handle(msg)
+			g.accessLogger.Handle(Msg)
 		}
 	case *log.GeneralMessage:
 		if g.errorLogger != nil && msg.Severity <= g.config.ErrorLogLevel {
-			g.errorLogger.Handle(msg)
+			g.errorLogger.Handle(Msg)
 		}
 	default:
 		// Swallow
@@ -141,6 +163,92 @@ func (g *Instance) Close() error {
 	return nil
 }
 
+func ParseMaskAddress(c string) (int, int, error) {
+	var m4, m6 int
+	switch c {
+	case "half":
+		m4, m6 = 16, 32
+	case "quarter":
+		m4, m6 = 8, 16
+	case "full":
+		m4, m6 = 0, 0
+	case "":
+		// do nothing
+	default:
+		if parts := strings.Split(c, "+"); len(parts) > 0 {
+			if len(parts) >= 1 && parts[0] != "" {
+				i, err := strconv.Atoi(strings.TrimPrefix(parts[0], "/"))
+				if err != nil {
+					return 32, 128, err
+				}
+				m4 = i
+			}
+			if len(parts) >= 2 && parts[1] != "" {
+				i, err := strconv.Atoi(strings.TrimPrefix(parts[1], "/"))
+				if err != nil {
+					return 32, 128, err
+				}
+				m6 = i
+			}
+		}
+	}
+
+	if m4%8 != 0 || m4 > 32 || m4 < 0 {
+		return 32, 128, errors.New("Log Mask: ipv4 mask must be divisible by 8 and between 0-32")
+	}
+
+	return m4, m6, nil
+}
+
+// MaskedMsgWrapper is to wrap the string() method to mask IP addresses in the log.
+type MaskedMsgWrapper struct {
+	log.Message
+	Mask4 int
+	Mask6 int
+}
+
+var (
+	ipv4Regex = regexp.MustCompile(`(\d{1,3}\.){3}\d{1,3}`)
+	ipv6Regex = regexp.MustCompile(`(?:[\da-fA-F]{0,4}:[\da-fA-F]{0,4}){2,7}`)
+)
+
+func (m *MaskedMsgWrapper) String() string {
+	str := m.Message.String()
+
+	// Process ipv4
+	maskedMsg := ipv4Regex.ReplaceAllStringFunc(str, func(s string) string {
+		if m.Mask4 == 32 {
+			return s
+		}
+		if m.Mask4 == 0 {
+			return "[Masked IPv4]"
+		}
+
+		parts := strings.Split(s, ".")
+		for i := m.Mask4 / 8; i < 4; i++ {
+			parts[i] = "*"
+		}
+		return strings.Join(parts, ".")
+	})
+
+	// process ipv6
+	maskedMsg = ipv6Regex.ReplaceAllStringFunc(maskedMsg, func(s string) string {
+		if m.Mask6 == 128 {
+			return s
+		}
+		if m.Mask6 == 0 {
+			return "Masked IPv6"
+		}
+		ip := net.ParseIP(s)
+		if ip == nil {
+			return s
+		}
+		return ip.Mask(net.CIDRMask(m.Mask6, 128)).String() + "/" + strconv.Itoa(m.Mask6)
+	})
+
+	return maskedMsg
+}
+
 func init() {
 	common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
 		return New(ctx, config.(*Config))

app/log/log_test.go

@@ -2,6 +2,7 @@ package log_test
 
 import (
 	"context"
+	"net"
 	"testing"
 
 	"github.com/golang/mock/gomock"
@@ -50,3 +51,39 @@ func TestCustomLogHandler(t *testing.T) {
 
 	common.Must(logger.Close())
 }
+
+func TestMaskAddress(t *testing.T) {
+	m4, m6, err := log.ParseMaskAddress("half")
+	if err != nil {
+		t.Fatal(err)
+	}
+	maskedAddr := log.MaskedMsgWrapper{
+		Mask4: m4,
+		Mask6: m6,
+	}
+	maskedAddr.Message = net.ParseIP("11.45.1.4")
+	if maskedAddr.String() != "11.45.*.*" {
+		t.Fatal("expected '11.45.*.*', but actually ", maskedAddr.String())
+	}
+	maskedAddr.Message = net.ParseIP("11:45:14:19:19:81:0::")
+	if maskedAddr.String() != "11:45::/32" {
+		t.Fatal("expected '11:45::/32', but actually", maskedAddr.String())
+	}
+
+	m4, m6, err = log.ParseMaskAddress("/16+/64")
+	if err != nil {
+		t.Fatal(err)
+	}
+	maskedAddr = log.MaskedMsgWrapper{
+		Mask4: m4,
+		Mask6: m6,
+	}
+	maskedAddr.Message = net.ParseIP("11.45.1.4")
+	if maskedAddr.String() != "11.45.*.*" {
+		t.Fatal("expected '11.45.*.*', but actually ", maskedAddr.String())
+	}
+	maskedAddr.Message = net.ParseIP("11:45:14:19:19:81:0::")
+	if maskedAddr.String() != "11:45:14:19::/64" {
+		t.Fatal("expected '11:45:14:19::/64', but actually", maskedAddr.String())
+	}
+}

app/metrics/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.1
-// 	protoc        v5.27.0
+// 	protoc-gen-go v1.36.11
+// 	protoc        v6.33.5
 // source: app/metrics/config.proto
 
 package metrics
@@ -11,6 +11,7 @@ import (
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	reflect "reflect"
 	sync "sync"
+	unsafe "unsafe"
 )
 
 const (
@@ -22,21 +23,19 @@ const (
 
 // Config is the settings for metrics.
 type Config struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
+	state protoimpl.MessageState `protogen:"open.v1"`
 	// Tag of the outbound handler that handles metrics http connections.
-	Tag string `protobuf:"bytes,1,opt,name=tag,proto3" json:"tag,omitempty"`
+	Tag           string `protobuf:"bytes,1,opt,name=tag,proto3" json:"tag,omitempty"`
+	Listen        string `protobuf:"bytes,2,opt,name=listen,proto3" json:"listen,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *Config) Reset() {
 	*x = Config{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_metrics_config_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_metrics_config_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Config) String() string {
@@ -47,7 +46,7 @@ func (*Config) ProtoMessage() {}
 
 func (x *Config) ProtoReflect() protoreflect.Message {
 	mi := &file_app_metrics_config_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -69,36 +68,37 @@ func (x *Config) GetTag() string {
 	return ""
 }
 
+func (x *Config) GetListen() string {
+	if x != nil {
+		return x.Listen
+	}
+	return ""
+}
+
 var File_app_metrics_config_proto protoreflect.FileDescriptor
 
-var file_app_metrics_config_proto_rawDesc = []byte{
-	0x0a, 0x18, 0x61, 0x70, 0x70, 0x2f, 0x6d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x2f, 0x63, 0x6f,
-	0x6e, 0x66, 0x69, 0x67, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x10, 0x78, 0x72, 0x61, 0x79,
-	0x2e, 0x61, 0x70, 0x70, 0x2e, 0x6d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x22, 0x1a, 0x0a, 0x06,
-	0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x10, 0x0a, 0x03, 0x74, 0x61, 0x67, 0x18, 0x01, 0x20,
-	0x01, 0x28, 0x09, 0x52, 0x03, 0x74, 0x61, 0x67, 0x42, 0x52, 0x0a, 0x14, 0x63, 0x6f, 0x6d, 0x2e,
-	0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x6d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73,
-	0x50, 0x01, 0x5a, 0x25, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78,
-	0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x61, 0x70,
-	0x70, 0x2f, 0x6d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0xaa, 0x02, 0x10, 0x58, 0x72, 0x61, 0x79,
-	0x2e, 0x41, 0x70, 0x70, 0x2e, 0x4d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x62, 0x06, 0x70, 0x72,
-	0x6f, 0x74, 0x6f, 0x33,
-}
+const file_app_metrics_config_proto_rawDesc = "" +
+	"\n" +
+	"\x18app/metrics/config.proto\x12\x10xray.app.metrics\"2\n" +
+	"\x06Config\x12\x10\n" +
+	"\x03tag\x18\x01 \x01(\tR\x03tag\x12\x16\n" +
+	"\x06listen\x18\x02 \x01(\tR\x06listenBR\n" +
+	"\x14com.xray.app.metricsP\x01Z%github.com/xtls/xray-core/app/metrics\xaa\x02\x10Xray.App.Metricsb\x06proto3"
 
 var (
 	file_app_metrics_config_proto_rawDescOnce sync.Once
-	file_app_metrics_config_proto_rawDescData = file_app_metrics_config_proto_rawDesc
+	file_app_metrics_config_proto_rawDescData []byte
 )
 
 func file_app_metrics_config_proto_rawDescGZIP() []byte {
 	file_app_metrics_config_proto_rawDescOnce.Do(func() {
-		file_app_metrics_config_proto_rawDescData = protoimpl.X.CompressGZIP(file_app_metrics_config_proto_rawDescData)
+		file_app_metrics_config_proto_rawDescData = protoimpl.X.CompressGZIP(unsafe.Slice(unsafe.StringData(file_app_metrics_config_proto_rawDesc), len(file_app_metrics_config_proto_rawDesc)))
 	})
 	return file_app_metrics_config_proto_rawDescData
 }
 
 var file_app_metrics_config_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
-var file_app_metrics_config_proto_goTypes = []interface{}{
+var file_app_metrics_config_proto_goTypes = []any{
 	(*Config)(nil), // 0: xray.app.metrics.Config
 }
 var file_app_metrics_config_proto_depIdxs = []int32{
@@ -114,25 +114,11 @@ func file_app_metrics_config_proto_init() {
 	if File_app_metrics_config_proto != nil {
 		return
 	}
-	if !protoimpl.UnsafeEnabled {
-		file_app_metrics_config_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Config); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_app_metrics_config_proto_rawDesc,
+			RawDescriptor: unsafe.Slice(unsafe.StringData(file_app_metrics_config_proto_rawDesc), len(file_app_metrics_config_proto_rawDesc)),
 			NumEnums:      0,
 			NumMessages:   1,
 			NumExtensions: 0,
@@ -143,7 +129,6 @@ func file_app_metrics_config_proto_init() {
 		MessageInfos:      file_app_metrics_config_proto_msgTypes,
 	}.Build()
 	File_app_metrics_config_proto = out.File
-	file_app_metrics_config_proto_rawDesc = nil
 	file_app_metrics_config_proto_goTypes = nil
 	file_app_metrics_config_proto_depIdxs = nil
 }

app/metrics/config.proto

@@ -10,4 +10,5 @@ option java_multiple_files = true;
 message Config {
   // Tag of the outbound handler that handles metrics http connections.
   string tag = 1;
+  string listen = 2;
 }

app/metrics/metrics.go

@@ -2,16 +2,18 @@ package metrics
 
 import (
 	"context"
+	"encoding/json"
+	stderrors "errors"
 	"expvar"
+	stdnet "net"
 	"net/http"
-	_ "net/http/pprof"
+	"net/http/pprof"
 	"strings"
 
 	"github.com/xtls/xray-core/app/observatory"
-	"github.com/xtls/xray-core/app/stats"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/errors"
-	"github.com/xtls/xray-core/common/net"
+	xnet "github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/signal/done"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/extension"
@@ -22,63 +24,24 @@ import (
 type MetricsHandler struct {
 	ohm          outbound.Manager
 	statsManager feature_stats.Manager
-	observatory  extension.Observatory
+	ctx          context.Context
 	tag          string
+	listen       string
+	tcpListener  xnet.Listener
+	listener     *OutboundListener
 }
 
 // NewMetricsHandler creates a new MetricsHandler based on the given config.
 func NewMetricsHandler(ctx context.Context, config *Config) (*MetricsHandler, error) {
 	c := &MetricsHandler{
-		tag: config.Tag,
+		ctx:    ctx,
+		tag:    config.Tag,
+		listen: config.Listen,
 	}
 	common.Must(core.RequireFeatures(ctx, func(om outbound.Manager, sm feature_stats.Manager) {
 		c.statsManager = sm
 		c.ohm = om
 	}))
-	expvar.Publish("stats", expvar.Func(func() interface{} {
-		manager, ok := c.statsManager.(*stats.Manager)
-		if !ok {
-			return nil
-		}
-		resp := map[string]map[string]map[string]int64{
-			"inbound":  {},
-			"outbound": {},
-			"user":     {},
-		}
-		manager.VisitCounters(func(name string, counter feature_stats.Counter) bool {
-			nameSplit := strings.Split(name, ">>>")
-			typeName, tagOrUser, direction := nameSplit[0], nameSplit[1], nameSplit[3]
-			if item, found := resp[typeName][tagOrUser]; found {
-				item[direction] = counter.Value()
-			} else {
-				resp[typeName][tagOrUser] = map[string]int64{
-					direction: counter.Value(),
-				}
-			}
-			return true
-		})
-		return resp
-	}))
-	expvar.Publish("observatory", expvar.Func(func() interface{} {
-		if c.observatory == nil {
-			common.Must(core.RequireFeatures(ctx, func(observatory extension.Observatory) error {
-				c.observatory = observatory
-				return nil
-			}))
-			if c.observatory == nil {
-				return nil
-			}
-		}
-		resp := map[string]*observatory.OutboundStatus{}
-		if o, err := c.observatory.GetObservation(context.Background()); err != nil {
-			return err
-		} else {
-			for _, x := range o.(*observatory.ObservationResult).GetStatus() {
-				resp[x.OutboundTag] = x
-			}
-		}
-		return resp
-	}))
 	return c, nil
 }
 
@@ -87,29 +50,172 @@ func (p *MetricsHandler) Type() interface{} {
 }
 
 func (p *MetricsHandler) Start() error {
-	listener := &OutboundListener{
-		buffer: make(chan net.Conn, 4),
-		done:   done.New(),
+	handler := p.httpHandler()
+
+	// direct listen a port if listen is set
+	if p.listen != "" {
+		TCPlistener, err := xnet.Listen("tcp", p.listen)
+		if err != nil {
+			return err
+		}
+		p.tcpListener = TCPlistener
+		errors.LogInfo(context.Background(), "Metrics server listening on ", p.listen)
+
+		go p.serve(TCPlistener, handler)
 	}
 
-	go func() {
-		if err := http.Serve(listener, http.DefaultServeMux); err != nil {
-			errors.LogErrorInner(context.Background(), err, "failed to start metrics server")
+	if p.tag == "" {
+		if p.tcpListener == nil {
+			return errors.New("metrics must have a tag or listen address")
 		}
-	}()
+		return nil
+	}
+
+	listener := &OutboundListener{
+		buffer: make(chan xnet.Conn, 4),
+		done:   done.New(),
+	}
+	p.listener = listener
+
+	go p.serve(listener, handler)
 
 	if err := p.ohm.RemoveHandler(context.Background(), p.tag); err != nil {
 		errors.LogInfo(context.Background(), "failed to remove existing handler")
 	}
 
-	return p.ohm.AddHandler(context.Background(), &Outbound{
+	if err := p.ohm.AddHandler(context.Background(), &Outbound{
 		tag:      p.tag,
 		listener: listener,
-	})
+	}); err != nil {
+		if closeErr := p.Close(); closeErr != nil {
+			errors.LogErrorInner(context.Background(), closeErr, "failed to close metrics server after start failure")
+		}
+		return err
+	}
+
+	return nil
 }
 
 func (p *MetricsHandler) Close() error {
-	return nil
+	var errs []error
+	if p.tcpListener != nil {
+		errs = append(errs, p.tcpListener.Close())
+		p.tcpListener = nil
+	}
+	if p.listener != nil {
+		errs = append(errs, p.listener.Close())
+		p.listener = nil
+	}
+	if p.ohm != nil && p.tag != "" {
+		if err := p.ohm.RemoveHandler(context.Background(), p.tag); err != nil {
+			errors.LogInfo(context.Background(), "failed to remove metrics handler")
+		}
+	}
+	return errors.Combine(errs...)
+}
+
+func (p *MetricsHandler) serve(listener xnet.Listener, handler http.Handler) {
+	if err := http.Serve(listener, handler); err != nil && !isClosedListenerError(err) {
+		errors.LogErrorInner(context.Background(), err, "failed to start metrics server")
+	}
+}
+
+func isClosedListenerError(err error) bool {
+	if err == nil {
+		return true
+	}
+	if stderrors.Is(err, stdnet.ErrClosed) || stderrors.Is(err, http.ErrServerClosed) {
+		return true
+	}
+	errText := err.Error()
+	return strings.Contains(errText, "listen closed") ||
+		strings.Contains(errText, "use of closed network connection")
+}
+
+func (p *MetricsHandler) httpHandler() http.Handler {
+	mux := http.NewServeMux()
+	mux.HandleFunc("/debug/vars", p.handleDebugVars)
+	mux.HandleFunc("/debug/pprof/", pprof.Index)
+	mux.HandleFunc("/debug/pprof/cmdline", pprof.Cmdline)
+	mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
+	mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
+	mux.HandleFunc("/debug/pprof/trace", pprof.Trace)
+	return mux
+}
+
+func (p *MetricsHandler) handleDebugVars(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=utf-8")
+	vars := map[string]json.RawMessage{}
+	expvar.Do(func(kv expvar.KeyValue) {
+		value := json.RawMessage(kv.Value.String())
+		if !json.Valid(value) {
+			value = json.RawMessage("null")
+		}
+		vars[kv.Key] = value
+	})
+	vars["stats"] = marshalJSON(p.stats())
+	vars["observatory"] = marshalJSON(p.observatoryStatus())
+
+	payload, err := json.Marshal(vars)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	w.Write(payload)
+}
+
+func marshalJSON(value interface{}) json.RawMessage {
+	data, err := json.Marshal(value)
+	if err != nil {
+		return json.RawMessage("null")
+	}
+	return data
+}
+
+func (p *MetricsHandler) stats() map[string]map[string]map[string]int64 {
+	resp := map[string]map[string]map[string]int64{
+		"inbound":  {},
+		"outbound": {},
+		"user":     {},
+	}
+	p.statsManager.VisitCounters(func(name string, counter feature_stats.Counter) bool {
+		nameSplit := strings.Split(name, ">>>")
+		if len(nameSplit) < 4 {
+			return true
+		}
+		typeName, tagOrUser, direction := nameSplit[0], nameSplit[1], nameSplit[3]
+		items, found := resp[typeName]
+		if !found {
+			items = map[string]map[string]int64{}
+			resp[typeName] = items
+		}
+		if item, found := items[tagOrUser]; found {
+			item[direction] = counter.Value()
+		} else {
+			items[tagOrUser] = map[string]int64{
+				direction: counter.Value(),
+			}
+		}
+		return true
+	})
+	return resp
+}
+
+func (p *MetricsHandler) observatoryStatus() interface{} {
+	feature := core.MustFromContext(p.ctx).GetFeature(extension.ObservatoryType())
+	if feature == nil {
+		return nil
+	}
+	observatoryFeature := feature.(extension.Observatory)
+	resp := map[string]*observatory.OutboundStatus{}
+	if o, err := observatoryFeature.GetObservation(context.Background()); err != nil {
+		return err
+	} else {
+		for _, x := range o.(*observatory.ObservationResult).GetStatus() {
+			resp[x.OutboundTag] = x
+		}
+	}
+	return resp
 }
 
 func init() {

app/metrics/metrics_test.go

@@ -0,0 +1,161 @@
+package metrics
+
+import (
+	"context"
+	"encoding/json"
+	stdnet "net"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/xtls/xray-core/app/dispatcher"
+	"github.com/xtls/xray-core/app/proxyman"
+	_ "github.com/xtls/xray-core/app/proxyman/inbound"
+	_ "github.com/xtls/xray-core/app/proxyman/outbound"
+	appstats "github.com/xtls/xray-core/app/stats"
+	"github.com/xtls/xray-core/common/serial"
+	"github.com/xtls/xray-core/core"
+	feature_outbound "github.com/xtls/xray-core/features/outbound"
+)
+
+func TestMetricsCanRestartInSameProcess(t *testing.T) {
+	for i := 0; i < 2; i++ {
+		server := startMetricsTestServer(t)
+		readMetricsVars(t, server)
+		readMetricsPprof(t, server)
+		if err := server.Close(); err != nil {
+			t.Fatalf("failed to close metrics server: %v", err)
+		}
+	}
+}
+
+func TestMetricsCanRunMultipleInstancesInSameProcess(t *testing.T) {
+	server1 := startMetricsTestServer(t)
+	t.Cleanup(func() {
+		_ = server1.Close()
+	})
+	server2 := startMetricsTestServer(t)
+	t.Cleanup(func() {
+		_ = server2.Close()
+	})
+
+	readMetricsVars(t, server1)
+	readMetricsVars(t, server2)
+}
+
+func TestMetricsListenOnlyWithoutTagDoesNotRegisterOutbound(t *testing.T) {
+	listen := pickMetricsListenAddress(t)
+	server := startMetricsTestServerWithMetricsConfig(t, &Config{
+		Listen: listen,
+	})
+	t.Cleanup(func() {
+		_ = server.Close()
+	})
+
+	response, err := http.Get("http://" + listen + "/debug/vars")
+	if err != nil {
+		t.Fatalf("failed to read listen-only metrics: %v", err)
+	}
+	defer response.Body.Close()
+	if response.StatusCode != http.StatusOK {
+		t.Fatalf("unexpected listen-only metrics status: %d", response.StatusCode)
+	}
+
+	outboundManager := server.GetFeature(feature_outbound.ManagerType()).(feature_outbound.Manager)
+	if handlers := outboundManager.ListHandlers(context.Background()); len(handlers) != 0 {
+		t.Fatalf("listen-only metrics registered outbound handlers: got %d, want 0", len(handlers))
+	}
+}
+
+func startMetricsTestServer(t *testing.T) *core.Instance {
+	return startMetricsTestServerWithMetricsConfig(t, &Config{
+		Tag: "metrics_out",
+	})
+}
+
+func startMetricsTestServerWithMetricsConfig(t *testing.T, metricsConfig *Config) *core.Instance {
+	t.Helper()
+
+	server, err := core.New(metricsTestConfig(metricsConfig))
+	if err != nil {
+		t.Fatalf("failed to create metrics server: %v", err)
+	}
+	if err := server.Start(); err != nil {
+		_ = server.Close()
+		t.Fatalf("failed to start metrics server: %v", err)
+	}
+	return server
+}
+
+func metricsTestConfig(metricsConfig *Config) *core.Config {
+	return &core.Config{
+		App: []*serial.TypedMessage{
+			serial.ToTypedMessage(&dispatcher.Config{}),
+			serial.ToTypedMessage(&proxyman.InboundConfig{}),
+			serial.ToTypedMessage(&proxyman.OutboundConfig{}),
+			serial.ToTypedMessage(&appstats.Config{}),
+			serial.ToTypedMessage(metricsConfig),
+		},
+	}
+}
+
+func pickMetricsListenAddress(t *testing.T) string {
+	t.Helper()
+
+	listener, err := stdnet.Listen("tcp", "127.0.0.1:0")
+	if err != nil {
+		t.Fatalf("failed to pick metrics listen address: %v", err)
+	}
+	defer listener.Close()
+	return listener.Addr().String()
+}
+
+func readMetricsVars(t *testing.T, server *core.Instance) {
+	t.Helper()
+
+	recorder := httptest.NewRecorder()
+	metricsHandler(t, server).httpHandler().ServeHTTP(
+		recorder,
+		httptest.NewRequest(http.MethodGet, "/debug/vars", nil),
+	)
+
+	if recorder.Code != http.StatusOK {
+		t.Fatalf("unexpected metrics vars status: %d", recorder.Code)
+	}
+
+	var payload map[string]interface{}
+	if err := json.NewDecoder(recorder.Body).Decode(&payload); err != nil {
+		t.Fatalf("failed to decode metrics vars: %v", err)
+	}
+	if _, found := payload["stats"]; !found {
+		t.Fatal("metrics vars missing stats")
+	}
+	if _, found := payload["observatory"]; !found {
+		t.Fatal("metrics vars missing observatory")
+	}
+}
+
+func readMetricsPprof(t *testing.T, server *core.Instance) {
+	t.Helper()
+
+	recorder := httptest.NewRecorder()
+	metricsHandler(t, server).httpHandler().ServeHTTP(
+		recorder,
+		httptest.NewRequest(http.MethodGet, "/debug/pprof/goroutine?debug=1", nil),
+	)
+
+	if recorder.Code != http.StatusOK {
+		t.Fatalf("unexpected metrics pprof status: %d", recorder.Code)
+	}
+}
+
+func metricsHandler(t *testing.T, server *core.Instance) *MetricsHandler {
+	t.Helper()
+
+	feature := server.GetFeature((*MetricsHandler)(nil))
+	handler, ok := feature.(*MetricsHandler)
+	if !ok || handler == nil {
+		t.Fatal("metrics handler not registered")
+	}
+	return handler
+}

app/metrics/outbound.go

@@ -8,6 +8,7 @@ import (
 	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/net/cnc"
+	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/common/signal/done"
 	"github.com/xtls/xray-core/transport"
 )
@@ -108,3 +109,13 @@ func (co *Outbound) Close() error {
 	co.closed = true
 	return co.listener.Close()
 }
+
+// SenderSettings implements outbound.Handler.
+func (co *Outbound) SenderSettings() *serial.TypedMessage {
+	return nil
+}
+
+// ProxySettings implements outbound.Handler.
+func (co *Outbound) ProxySettings() *serial.TypedMessage {
+	return nil
+}

app/observatory/burst/burst.go

@@ -5,8 +5,6 @@ import (
 	"time"
 )
 
-//go:generate go run github.com/v2fly/v2ray-core/v4/common/errors/errorgen
-
 const (
 	rttFailed = time.Duration(math.MaxInt64 - iota)
 	rttUntested

app/observatory/burst/burstobserver.go

@@ -2,7 +2,6 @@ package burst
 
 import (
 	"context"
-
 	"sync"
 
 	"github.com/xtls/xray-core/app/observatory"
@@ -12,6 +11,7 @@ import (
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/extension"
 	"github.com/xtls/xray-core/features/outbound"
+	"github.com/xtls/xray-core/features/routing"
 	"google.golang.org/protobuf/proto"
 )
 
@@ -31,6 +31,10 @@ func (o *Observer) GetObservation(ctx context.Context) (proto.Message, error) {
 	return &observatory.ObservationResult{Status: o.createResult()}, nil
 }
 
+func (o *Observer) Check(tag []string) {
+	o.hp.Check(tag)
+}
+
 func (o *Observer) createResult() []*observatory.OutboundStatus {
 	var result []*observatory.OutboundStatus
 	o.hp.access.Lock()
@@ -67,7 +71,6 @@ func (o *Observer) Start() error {
 		o.hp.StartScheduler(func() ([]string, error) {
 			hs, ok := o.ohm.(outbound.HandlerSelector)
 			if !ok {
-
 				return nil, errors.New("outbound.Manager is not a HandlerSelector")
 			}
 
@@ -88,13 +91,15 @@ func (o *Observer) Close() error {
 
 func New(ctx context.Context, config *Config) (*Observer, error) {
 	var outboundManager outbound.Manager
-	err := core.RequireFeatures(ctx, func(om outbound.Manager) {
+	var dispatcher routing.Dispatcher
+	err := core.RequireFeatures(ctx, func(om outbound.Manager, rd routing.Dispatcher) {
 		outboundManager = om
+		dispatcher = rd
 	})
 	if err != nil {
 		return nil, errors.New("Cannot get depended features").Base(err)
 	}
-	hp := NewHealthPing(ctx, config.PingConfig)
+	hp := NewHealthPing(ctx, dispatcher, config.PingConfig)
 	return &Observer{
 		config: config,
 		ctx:    ctx,

app/observatory/burst/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.1
-// 	protoc        v5.27.0
+// 	protoc-gen-go v1.36.11
+// 	protoc        v6.33.5
 // source: app/observatory/burst/config.proto
 
 package burst
@@ -11,6 +11,7 @@ import (
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	reflect "reflect"
 	sync "sync"
+	unsafe "unsafe"
 )
 
 const (
@@ -21,22 +22,19 @@ const (
 )
 
 type Config struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
+	state protoimpl.MessageState `protogen:"open.v1"`
 	// @Document The selectors for outbound under observation
 	SubjectSelector []string          `protobuf:"bytes,2,rep,name=subject_selector,json=subjectSelector,proto3" json:"subject_selector,omitempty"`
 	PingConfig      *HealthPingConfig `protobuf:"bytes,3,opt,name=ping_config,json=pingConfig,proto3" json:"ping_config,omitempty"`
+	unknownFields   protoimpl.UnknownFields
+	sizeCache       protoimpl.SizeCache
 }
 
 func (x *Config) Reset() {
 	*x = Config{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_observatory_burst_config_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_observatory_burst_config_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Config) String() string {
@@ -47,7 +45,7 @@ func (*Config) ProtoMessage() {}
 
 func (x *Config) ProtoReflect() protoreflect.Message {
 	mi := &file_app_observatory_burst_config_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -77,10 +75,7 @@ func (x *Config) GetPingConfig() *HealthPingConfig {
 }
 
 type HealthPingConfig struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
+	state protoimpl.MessageState `protogen:"open.v1"`
 	// destination url, need 204 for success return
 	// default https://connectivitycheck.gstatic.com/generate_204
 	Destination string `protobuf:"bytes,1,opt,name=destination,proto3" json:"destination,omitempty"`
@@ -92,15 +87,17 @@ type HealthPingConfig struct {
 	SamplingCount int32 `protobuf:"varint,4,opt,name=samplingCount,proto3" json:"samplingCount,omitempty"`
 	// ping timeout, int64 values of time.Duration
 	Timeout int64 `protobuf:"varint,5,opt,name=timeout,proto3" json:"timeout,omitempty"`
+	// http method to make request
+	HttpMethod    string `protobuf:"bytes,6,opt,name=httpMethod,proto3" json:"httpMethod,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *HealthPingConfig) Reset() {
 	*x = HealthPingConfig{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_observatory_burst_config_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_observatory_burst_config_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *HealthPingConfig) String() string {
@@ -111,7 +108,7 @@ func (*HealthPingConfig) ProtoMessage() {}
 
 func (x *HealthPingConfig) ProtoReflect() protoreflect.Message {
 	mi := &file_app_observatory_burst_config_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -161,57 +158,47 @@ func (x *HealthPingConfig) GetTimeout() int64 {
 	return 0
 }
 
+func (x *HealthPingConfig) GetHttpMethod() string {
+	if x != nil {
+		return x.HttpMethod
+	}
+	return ""
+}
+
 var File_app_observatory_burst_config_proto protoreflect.FileDescriptor
 
-var file_app_observatory_burst_config_proto_rawDesc = []byte{
-	0x0a, 0x22, 0x61, 0x70, 0x70, 0x2f, 0x6f, 0x62, 0x73, 0x65, 0x72, 0x76, 0x61, 0x74, 0x6f, 0x72,
-	0x79, 0x2f, 0x62, 0x75, 0x72, 0x73, 0x74, 0x2f, 0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x2e, 0x70,
-	0x72, 0x6f, 0x74, 0x6f, 0x12, 0x1f, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f, 0x72, 0x65, 0x2e,
-	0x61, 0x70, 0x70, 0x2e, 0x6f, 0x62, 0x73, 0x65, 0x72, 0x76, 0x61, 0x74, 0x6f, 0x72, 0x79, 0x2e,
-	0x62, 0x75, 0x72, 0x73, 0x74, 0x22, 0x87, 0x01, 0x0a, 0x06, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67,
-	0x12, 0x29, 0x0a, 0x10, 0x73, 0x75, 0x62, 0x6a, 0x65, 0x63, 0x74, 0x5f, 0x73, 0x65, 0x6c, 0x65,
-	0x63, 0x74, 0x6f, 0x72, 0x18, 0x02, 0x20, 0x03, 0x28, 0x09, 0x52, 0x0f, 0x73, 0x75, 0x62, 0x6a,
-	0x65, 0x63, 0x74, 0x53, 0x65, 0x6c, 0x65, 0x63, 0x74, 0x6f, 0x72, 0x12, 0x52, 0x0a, 0x0b, 0x70,
-	0x69, 0x6e, 0x67, 0x5f, 0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x18, 0x03, 0x20, 0x01, 0x28, 0x0b,
-	0x32, 0x31, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f, 0x72, 0x65, 0x2e, 0x61, 0x70, 0x70,
-	0x2e, 0x6f, 0x62, 0x73, 0x65, 0x72, 0x76, 0x61, 0x74, 0x6f, 0x72, 0x79, 0x2e, 0x62, 0x75, 0x72,
-	0x73, 0x74, 0x2e, 0x48, 0x65, 0x61, 0x6c, 0x74, 0x68, 0x50, 0x69, 0x6e, 0x67, 0x43, 0x6f, 0x6e,
-	0x66, 0x69, 0x67, 0x52, 0x0a, 0x70, 0x69, 0x6e, 0x67, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x22,
-	0xb4, 0x01, 0x0a, 0x10, 0x48, 0x65, 0x61, 0x6c, 0x74, 0x68, 0x50, 0x69, 0x6e, 0x67, 0x43, 0x6f,
-	0x6e, 0x66, 0x69, 0x67, 0x12, 0x20, 0x0a, 0x0b, 0x64, 0x65, 0x73, 0x74, 0x69, 0x6e, 0x61, 0x74,
-	0x69, 0x6f, 0x6e, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0b, 0x64, 0x65, 0x73, 0x74, 0x69,
-	0x6e, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x12, 0x22, 0x0a, 0x0c, 0x63, 0x6f, 0x6e, 0x6e, 0x65, 0x63,
-	0x74, 0x69, 0x76, 0x69, 0x74, 0x79, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0c, 0x63, 0x6f,
-	0x6e, 0x6e, 0x65, 0x63, 0x74, 0x69, 0x76, 0x69, 0x74, 0x79, 0x12, 0x1a, 0x0a, 0x08, 0x69, 0x6e,
-	0x74, 0x65, 0x72, 0x76, 0x61, 0x6c, 0x18, 0x03, 0x20, 0x01, 0x28, 0x03, 0x52, 0x08, 0x69, 0x6e,
-	0x74, 0x65, 0x72, 0x76, 0x61, 0x6c, 0x12, 0x24, 0x0a, 0x0d, 0x73, 0x61, 0x6d, 0x70, 0x6c, 0x69,
-	0x6e, 0x67, 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x18, 0x04, 0x20, 0x01, 0x28, 0x05, 0x52, 0x0d, 0x73,
-	0x61, 0x6d, 0x70, 0x6c, 0x69, 0x6e, 0x67, 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x12, 0x18, 0x0a, 0x07,
-	0x74, 0x69, 0x6d, 0x65, 0x6f, 0x75, 0x74, 0x18, 0x05, 0x20, 0x01, 0x28, 0x03, 0x52, 0x07, 0x74,
-	0x69, 0x6d, 0x65, 0x6f, 0x75, 0x74, 0x42, 0x70, 0x0a, 0x1e, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72,
-	0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x6f, 0x62, 0x73, 0x65, 0x72, 0x76, 0x61, 0x74, 0x6f,
-	0x72, 0x79, 0x2e, 0x62, 0x75, 0x72, 0x73, 0x74, 0x50, 0x01, 0x5a, 0x2f, 0x67, 0x69, 0x74, 0x68,
-	0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79,
-	0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x61, 0x70, 0x70, 0x2f, 0x6f, 0x62, 0x73, 0x65, 0x72, 0x76,
-	0x61, 0x74, 0x6f, 0x72, 0x79, 0x2f, 0x62, 0x75, 0x72, 0x73, 0x74, 0xaa, 0x02, 0x1a, 0x58, 0x72,
-	0x61, 0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x4f, 0x62, 0x73, 0x65, 0x72, 0x76, 0x61, 0x74, 0x6f,
-	0x72, 0x79, 0x2e, 0x42, 0x75, 0x72, 0x73, 0x74, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
-}
+const file_app_observatory_burst_config_proto_rawDesc = "" +
+	"\n" +
+	"\"app/observatory/burst/config.proto\x12\x1fxray.core.app.observatory.burst\"\x87\x01\n" +
+	"\x06Config\x12)\n" +
+	"\x10subject_selector\x18\x02 \x03(\tR\x0fsubjectSelector\x12R\n" +
+	"\vping_config\x18\x03 \x01(\v21.xray.core.app.observatory.burst.HealthPingConfigR\n" +
+	"pingConfig\"\xd4\x01\n" +
+	"\x10HealthPingConfig\x12 \n" +
+	"\vdestination\x18\x01 \x01(\tR\vdestination\x12\"\n" +
+	"\fconnectivity\x18\x02 \x01(\tR\fconnectivity\x12\x1a\n" +
+	"\binterval\x18\x03 \x01(\x03R\binterval\x12$\n" +
+	"\rsamplingCount\x18\x04 \x01(\x05R\rsamplingCount\x12\x18\n" +
+	"\atimeout\x18\x05 \x01(\x03R\atimeout\x12\x1e\n" +
+	"\n" +
+	"httpMethod\x18\x06 \x01(\tR\n" +
+	"httpMethodBp\n" +
+	"\x1ecom.xray.app.observatory.burstP\x01Z/github.com/xtls/xray-core/app/observatory/burst\xaa\x02\x1aXray.App.Observatory.Burstb\x06proto3"
 
 var (
 	file_app_observatory_burst_config_proto_rawDescOnce sync.Once
-	file_app_observatory_burst_config_proto_rawDescData = file_app_observatory_burst_config_proto_rawDesc
+	file_app_observatory_burst_config_proto_rawDescData []byte
 )
 
 func file_app_observatory_burst_config_proto_rawDescGZIP() []byte {
 	file_app_observatory_burst_config_proto_rawDescOnce.Do(func() {
-		file_app_observatory_burst_config_proto_rawDescData = protoimpl.X.CompressGZIP(file_app_observatory_burst_config_proto_rawDescData)
+		file_app_observatory_burst_config_proto_rawDescData = protoimpl.X.CompressGZIP(unsafe.Slice(unsafe.StringData(file_app_observatory_burst_config_proto_rawDesc), len(file_app_observatory_burst_config_proto_rawDesc)))
 	})
 	return file_app_observatory_burst_config_proto_rawDescData
 }
 
 var file_app_observatory_burst_config_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
-var file_app_observatory_burst_config_proto_goTypes = []interface{}{
+var file_app_observatory_burst_config_proto_goTypes = []any{
 	(*Config)(nil),           // 0: xray.core.app.observatory.burst.Config
 	(*HealthPingConfig)(nil), // 1: xray.core.app.observatory.burst.HealthPingConfig
 }
@@ -229,37 +216,11 @@ func file_app_observatory_burst_config_proto_init() {
 	if File_app_observatory_burst_config_proto != nil {
 		return
 	}
-	if !protoimpl.UnsafeEnabled {
-		file_app_observatory_burst_config_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Config); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_observatory_burst_config_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*HealthPingConfig); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_app_observatory_burst_config_proto_rawDesc,
+			RawDescriptor: unsafe.Slice(unsafe.StringData(file_app_observatory_burst_config_proto_rawDesc), len(file_app_observatory_burst_config_proto_rawDesc)),
 			NumEnums:      0,
 			NumMessages:   2,
 			NumExtensions: 0,
@@ -270,7 +231,6 @@ func file_app_observatory_burst_config_proto_init() {
 		MessageInfos:      file_app_observatory_burst_config_proto_msgTypes,
 	}.Build()
 	File_app_observatory_burst_config_proto = out.File
-	file_app_observatory_burst_config_proto_rawDesc = nil
 	file_app_observatory_burst_config_proto_goTypes = nil
 	file_app_observatory_burst_config_proto_depIdxs = nil
 }

app/observatory/burst/config.proto

@@ -26,4 +26,7 @@ message HealthPingConfig {
   int32 samplingCount = 4;
   // ping timeout, int64 values of time.Duration
   int64 timeout = 5;
+  // http method to make request
+  string httpMethod = 6;
+
 }

app/observatory/burst/healthping.go

@@ -5,10 +5,12 @@ import (
 	"fmt"
 	"strings"
 	"sync"
+	"sync/atomic"
 	"time"
 
 	"github.com/xtls/xray-core/common/dice"
 	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/features/routing"
 )
 
 // HealthPingSettings holds settings for health Checker
@@ -18,29 +20,41 @@ type HealthPingSettings struct {
 	Interval      time.Duration `json:"interval"`
 	SamplingCount int           `json:"sampling"`
 	Timeout       time.Duration `json:"timeout"`
+	HttpMethod    string        `json:"httpMethod"`
 }
 
 // HealthPing is the health checker for balancers
 type HealthPing struct {
-	ctx         context.Context
-	access      sync.Mutex
-	ticker      *time.Ticker
-	tickerClose chan struct{}
+	ctx           context.Context
+	cancelCtx     context.CancelFunc
+	cancelPending atomic.Pointer[context.CancelFunc]
+	dispatcher    routing.Dispatcher
+	access        sync.Mutex
+	ticker        *time.Ticker
 
 	Settings *HealthPingSettings
 	Results  map[string]*HealthPingRTTS
 }
 
 // NewHealthPing creates a new HealthPing with settings
-func NewHealthPing(ctx context.Context, config *HealthPingConfig) *HealthPing {
+func NewHealthPing(ctx context.Context, dispatcher routing.Dispatcher, config *HealthPingConfig) *HealthPing {
 	settings := &HealthPingSettings{}
 	if config != nil {
+
+		var httpMethod string
+		if config.HttpMethod == "" {
+			httpMethod = "HEAD"
+		} else {
+			httpMethod = strings.TrimSpace(config.HttpMethod)
+		}
+
 		settings = &HealthPingSettings{
 			Connectivity:  strings.TrimSpace(config.Connectivity),
 			Destination:   strings.TrimSpace(config.Destination),
 			Interval:      time.Duration(config.Interval),
 			SamplingCount: int(config.SamplingCount),
 			Timeout:       time.Duration(config.Timeout),
+			HttpMethod:    httpMethod,
 		}
 	}
 	if settings.Destination == "" {
@@ -50,10 +64,10 @@ func NewHealthPing(ctx context.Context, config *HealthPingConfig) *HealthPing {
 		settings.Destination = "https://connectivitycheck.gstatic.com/generate_204"
 	}
 	if settings.Interval == 0 {
-		settings.Interval = time.Duration(1) * time.Minute
-	} else if settings.Interval < 10 {
+		settings.Interval = 1 * time.Minute
+	} else if settings.Interval < 10*time.Second {
 		errors.LogWarning(ctx, "health check interval is too small, 10s is applied")
-		settings.Interval = time.Duration(10) * time.Second
+		settings.Interval = 10 * time.Second
 	}
 	if settings.SamplingCount <= 0 {
 		settings.SamplingCount = 10
@@ -61,12 +75,15 @@ func NewHealthPing(ctx context.Context, config *HealthPingConfig) *HealthPing {
 	if settings.Timeout <= 0 {
 		// results are saved after all health pings finish,
 		// a larger timeout could possibly makes checks run longer
-		settings.Timeout = time.Duration(5) * time.Second
+		settings.Timeout = 5 * time.Second
 	}
+	ctx, cancel := context.WithCancel(ctx)
 	return &HealthPing{
-		ctx:      ctx,
-		Settings: settings,
-		Results:  nil,
+		ctx:        ctx,
+		cancelCtx:  cancel,
+		dispatcher: dispatcher,
+		Settings:   settings,
+		Results:    nil,
 	}
 }
 
@@ -77,9 +94,9 @@ func (h *HealthPing) StartScheduler(selector func() ([]string, error)) {
 	}
 	interval := h.Settings.Interval * time.Duration(h.Settings.SamplingCount)
 	ticker := time.NewTicker(interval)
-	tickerClose := make(chan struct{})
 	h.ticker = ticker
-	h.tickerClose = tickerClose
+
+	// init run to get a fast check result
 	go func() {
 		tags, err := selector()
 		if err != nil {
@@ -97,13 +114,20 @@ func (h *HealthPing) StartScheduler(selector func() ([]string, error)) {
 					errors.LogWarning(h.ctx, "error select outbounds for scheduled health check: ", err)
 					return
 				}
-				h.doCheck(tags, interval, h.Settings.SamplingCount)
+				subCtx, cancel := context.WithCancel(h.ctx)
+				old := h.cancelPending.Swap(&cancel)
+				if old != nil {
+					errors.LogDebug(h.ctx, "scheduled health check not finished before next round, canceling previous one")
+					(*old)()
+				}
+				h.doCheck(subCtx, tags, interval, h.Settings.SamplingCount)
+				h.cancelPending.CompareAndSwap(&cancel, nil)
 				h.Cleanup(tags)
 			}()
 			select {
 			case <-ticker.C:
 				continue
-			case <-tickerClose:
+			case <-h.ctx.Done():
 				return
 			}
 		}
@@ -117,8 +141,7 @@ func (h *HealthPing) StopScheduler() {
 	}
 	h.ticker.Stop()
 	h.ticker = nil
-	close(h.tickerClose)
-	h.tickerClose = nil
+	h.cancelCtx()
 }
 
 // Check implements the HealthChecker
@@ -127,7 +150,7 @@ func (h *HealthPing) Check(tags []string) error {
 		return nil
 	}
 	errors.LogInfo(h.ctx, "perform one-time health check for tags ", tags)
-	h.doCheck(tags, 0, 1)
+	h.doCheck(h.ctx, tags, 0, 1)
 	return nil
 }
 
@@ -138,17 +161,19 @@ type rtt struct {
 
 // doCheck performs the 'rounds' amount checks in given 'duration'. You should make
 // sure all tags are valid for current balancer
-func (h *HealthPing) doCheck(tags []string, duration time.Duration, rounds int) {
+// cancel ctx will stop all pending checks
+func (h *HealthPing) doCheck(ctx context.Context, tags []string, duration time.Duration, rounds int) {
 	count := len(tags) * rounds
 	if count == 0 {
 		return
 	}
 	ch := make(chan *rtt, count)
-
+	timers := make([]*time.Timer, 0, count)
 	for _, tag := range tags {
 		handler := tag
 		client := newPingClient(
 			h.ctx,
+			h.dispatcher,
 			h.Settings.Destination,
 			h.Settings.Timeout,
 			handler,
@@ -156,11 +181,11 @@ func (h *HealthPing) doCheck(tags []string, duration time.Duration, rounds int)
 		for i := 0; i < rounds; i++ {
 			delay := time.Duration(0)
 			if duration > 0 {
-				delay = time.Duration(dice.Roll(int(duration)))
+				delay = time.Duration(dice.RollInt63n(int64(duration)))
 			}
-			time.AfterFunc(delay, func() {
+			timers = append(timers, time.AfterFunc(delay, func() {
 				errors.LogDebug(h.ctx, "checking ", handler)
-				delay, err := client.MeasureDelay()
+				delay, err := client.MeasureDelay(h.Settings.HttpMethod)
 				if err == nil {
 					ch <- &rtt{
 						handler: handler,
@@ -186,14 +211,21 @@ func (h *HealthPing) doCheck(tags []string, duration time.Duration, rounds int)
 					handler: handler,
 					value:   rttFailed,
 				}
-			})
+			}))
 		}
 	}
 	for i := 0; i < count; i++ {
-		rtt := <-ch
-		if rtt.value > 0 {
-			// should not put results when network is down
-			h.PutResult(rtt.handler, rtt.value)
+		select {
+		case rtt := <-ch:
+			if rtt.value > 0 {
+				// should not put results when network is down
+				h.PutResult(rtt.handler, rtt.value)
+			}
+		case <-ctx.Done():
+			for _, timer := range timers {
+				timer.Stop()
+			}
+			return
 		}
 	}
 }
@@ -209,7 +241,7 @@ func (h *HealthPing) PutResult(tag string, rtt time.Duration) {
 	if !ok {
 		// validity is 2 times to sampling period, since the check are
 		// distributed in the time line randomly, in extreme cases,
-		// previous checks are distributed on the left, and latters
+		// Previous checks are distributed on the left, and later ones
 		// on the right
 		validity := h.Settings.Interval * time.Duration(h.Settings.SamplingCount) * 2
 		r = NewHealthPingResult(h.Settings.SamplingCount, validity)
@@ -247,7 +279,7 @@ func (h *HealthPing) checkConnectivity() bool {
 		h.Settings.Connectivity,
 		h.Settings.Timeout,
 	)
-	if _, err := tester.MeasureDelay(); err != nil {
+	if _, err := tester.MeasureDelay(h.Settings.HttpMethod); err != nil {
 		return false
 	}
 	return true

app/observatory/burst/healthping_result.go

@@ -59,7 +59,7 @@ func (h *HealthPingRTTS) Put(d time.Duration) {
 	if h.rtts == nil {
 		h.rtts = make([]*pingRTT, h.cap)
 		for i := 0; i < h.cap; i++ {
-			h.rtts[i] = &pingRTT{}
+			h.rtts[i] = &pingRTT{value: rttUntested}
 		}
 		h.idx = -1
 	}
@@ -88,7 +88,7 @@ func (h *HealthPingRTTS) getStatistics() *HealthPingStats {
 	validRTTs := make([]time.Duration, 0)
 	for _, rtt := range h.rtts {
 		switch {
-		case rtt.value == 0 || time.Since(rtt.time) > h.validity:
+		case rtt.value == rttUntested || time.Since(rtt.time) > h.validity:
 			continue
 		case rtt.value == rttFailed:
 			stats.Fail++

app/observatory/burst/ping.go

@@ -2,10 +2,13 @@ package burst
 
 import (
 	"context"
+	"io"
 	"net/http"
 	"time"
 
 	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/common/utils"
+	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/transport/internet/tagged"
 )
 
@@ -14,10 +17,10 @@ type pingClient struct {
 	httpClient  *http.Client
 }
 
-func newPingClient(ctx context.Context, destination string, timeout time.Duration, handler string) *pingClient {
+func newPingClient(ctx context.Context, dispatcher routing.Dispatcher, destination string, timeout time.Duration, handler string) *pingClient {
 	return &pingClient{
 		destination: destination,
-		httpClient:  newHTTPClient(ctx, handler, timeout),
+		httpClient:  newHTTPClient(ctx, dispatcher, handler, timeout),
 	}
 }
 
@@ -28,7 +31,7 @@ func newDirectPingClient(destination string, timeout time.Duration) *pingClient
 	}
 }
 
-func newHTTPClient(ctxv context.Context, handler string, timeout time.Duration) *http.Client {
+func newHTTPClient(ctxv context.Context, dispatcher routing.Dispatcher, handler string, timeout time.Duration) *http.Client {
 	tr := &http.Transport{
 		DisableKeepAlives: true,
 		DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
@@ -36,7 +39,7 @@ func newHTTPClient(ctxv context.Context, handler string, timeout time.Duration)
 			if err != nil {
 				return nil, err
 			}
-			return tagged.Dialer(ctxv, dest, handler)
+			return tagged.Dialer(ctxv, dispatcher, dest, handler)
 		},
 	}
 	return &http.Client{
@@ -50,20 +53,29 @@ func newHTTPClient(ctxv context.Context, handler string, timeout time.Duration)
 }
 
 // MeasureDelay returns the delay time of the request to dest
-func (s *pingClient) MeasureDelay() (time.Duration, error) {
+func (s *pingClient) MeasureDelay(httpMethod string) (time.Duration, error) {
 	if s.httpClient == nil {
-		panic("pingClient no initialized")
+		panic("pingClient not initialized")
 	}
-	req, err := http.NewRequest(http.MethodHead, s.destination, nil)
+
+	req, err := http.NewRequest(httpMethod, s.destination, nil)
 	if err != nil {
 		return rttFailed, err
 	}
+	utils.TryDefaultHeadersWith(req.Header, "nav")
+
 	start := time.Now()
 	resp, err := s.httpClient.Do(req)
 	if err != nil {
 		return rttFailed, err
 	}
-	// don't wait for body
+	if httpMethod == http.MethodGet {
+		_, err = io.Copy(io.Discard, resp.Body)
+		if err != nil {
+			return rttFailed, err
+		}
+	}
 	resp.Body.Close()
+
 	return time.Since(start), nil
 }

app/observatory/command/command.go

@@ -38,7 +38,7 @@ func init() {
 		sv := &service{v: s}
 		err := s.RequireFeatures(func(Observatory extension.Observatory) {
 			sv.observatory = Observatory
-		})
+		}, false)
 		if err != nil {
 			return nil, err
 		}

app/observatory/command/command.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.1
-// 	protoc        v5.27.0
+// 	protoc-gen-go v1.36.11
+// 	protoc        v6.33.5
 // source: app/observatory/command/command.proto
 
 package command
@@ -12,6 +12,7 @@ import (
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	reflect "reflect"
 	sync "sync"
+	unsafe "unsafe"
 )
 
 const (
@@ -22,18 +23,16 @@ const (
 )
 
 type GetOutboundStatusRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
+	state         protoimpl.MessageState `protogen:"open.v1"`
 	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *GetOutboundStatusRequest) Reset() {
 	*x = GetOutboundStatusRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_observatory_command_command_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_observatory_command_command_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *GetOutboundStatusRequest) String() string {
@@ -44,7 +43,7 @@ func (*GetOutboundStatusRequest) ProtoMessage() {}
 
 func (x *GetOutboundStatusRequest) ProtoReflect() protoreflect.Message {
 	mi := &file_app_observatory_command_command_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -60,20 +59,17 @@ func (*GetOutboundStatusRequest) Descriptor() ([]byte, []int) {
 }
 
 type GetOutboundStatusResponse struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
+	state         protoimpl.MessageState         `protogen:"open.v1"`
+	Status        *observatory.ObservationResult `protobuf:"bytes,1,opt,name=status,proto3" json:"status,omitempty"`
 	unknownFields protoimpl.UnknownFields
-
-	Status *observatory.ObservationResult `protobuf:"bytes,1,opt,name=status,proto3" json:"status,omitempty"`
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *GetOutboundStatusResponse) Reset() {
 	*x = GetOutboundStatusResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_observatory_command_command_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_observatory_command_command_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *GetOutboundStatusResponse) String() string {
@@ -84,7 +80,7 @@ func (*GetOutboundStatusResponse) ProtoMessage() {}
 
 func (x *GetOutboundStatusResponse) ProtoReflect() protoreflect.Message {
 	mi := &file_app_observatory_command_command_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -107,18 +103,16 @@ func (x *GetOutboundStatusResponse) GetStatus() *observatory.ObservationResult {
 }
 
 type Config struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
+	state         protoimpl.MessageState `protogen:"open.v1"`
 	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *Config) Reset() {
 	*x = Config{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_observatory_command_command_proto_msgTypes[2]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_observatory_command_command_proto_msgTypes[2]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Config) String() string {
@@ -129,7 +123,7 @@ func (*Config) ProtoMessage() {}
 
 func (x *Config) ProtoReflect() protoreflect.Message {
 	mi := &file_app_observatory_command_command_proto_msgTypes[2]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -146,58 +140,31 @@ func (*Config) Descriptor() ([]byte, []int) {
 
 var File_app_observatory_command_command_proto protoreflect.FileDescriptor
 
-var file_app_observatory_command_command_proto_rawDesc = []byte{
-	0x0a, 0x25, 0x61, 0x70, 0x70, 0x2f, 0x6f, 0x62, 0x73, 0x65, 0x72, 0x76, 0x61, 0x74, 0x6f, 0x72,
-	0x79, 0x2f, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x2f, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e,
-	0x64, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x21, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f,
-	0x72, 0x65, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x6f, 0x62, 0x73, 0x65, 0x72, 0x76, 0x61, 0x74, 0x6f,
-	0x72, 0x79, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x1a, 0x1c, 0x61, 0x70, 0x70, 0x2f,
-	0x6f, 0x62, 0x73, 0x65, 0x72, 0x76, 0x61, 0x74, 0x6f, 0x72, 0x79, 0x2f, 0x63, 0x6f, 0x6e, 0x66,
-	0x69, 0x67, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x1a, 0x0a, 0x18, 0x47, 0x65, 0x74, 0x4f,
-	0x75, 0x74, 0x62, 0x6f, 0x75, 0x6e, 0x64, 0x53, 0x74, 0x61, 0x74, 0x75, 0x73, 0x52, 0x65, 0x71,
-	0x75, 0x65, 0x73, 0x74, 0x22, 0x61, 0x0a, 0x19, 0x47, 0x65, 0x74, 0x4f, 0x75, 0x74, 0x62, 0x6f,
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-	0x65, 0x12, 0x44, 0x0a, 0x06, 0x73, 0x74, 0x61, 0x74, 0x75, 0x73, 0x18, 0x01, 0x20, 0x01, 0x28,
-	0x0b, 0x32, 0x2c, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f, 0x72, 0x65, 0x2e, 0x61, 0x70,
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-	0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f,
-	0x72, 0x65, 0x2f, 0x61, 0x70, 0x70, 0x2f, 0x6f, 0x62, 0x73, 0x65, 0x72, 0x76, 0x61, 0x74, 0x6f,
-	0x72, 0x79, 0x2f, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0xaa, 0x02, 0x21, 0x58, 0x72, 0x61,
-	0x79, 0x2e, 0x43, 0x6f, 0x72, 0x65, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x4f, 0x62, 0x73, 0x65, 0x72,
-	0x76, 0x61, 0x74, 0x6f, 0x72, 0x79, 0x2e, 0x43, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x62, 0x06,
-	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
-}
+const file_app_observatory_command_command_proto_rawDesc = "" +
+	"\n" +
+	"%app/observatory/command/command.proto\x12!xray.core.app.observatory.command\x1a\x1capp/observatory/config.proto\"\x1a\n" +
+	"\x18GetOutboundStatusRequest\"a\n" +
+	"\x19GetOutboundStatusResponse\x12D\n" +
+	"\x06status\x18\x01 \x01(\v2,.xray.core.app.observatory.ObservationResultR\x06status\"\b\n" +
+	"\x06Config2\xa7\x01\n" +
+	"\x12ObservatoryService\x12\x90\x01\n" +
+	"\x11GetOutboundStatus\x12;.xray.core.app.observatory.command.GetOutboundStatusRequest\x1a<.xray.core.app.observatory.command.GetOutboundStatusResponse\"\x00B\x80\x01\n" +
+	"%com.xray.core.app.observatory.commandP\x01Z1github.com/xtls/xray-core/app/observatory/command\xaa\x02!Xray.Core.App.Observatory.Commandb\x06proto3"
 
 var (
 	file_app_observatory_command_command_proto_rawDescOnce sync.Once
-	file_app_observatory_command_command_proto_rawDescData = file_app_observatory_command_command_proto_rawDesc
+	file_app_observatory_command_command_proto_rawDescData []byte
 )
 
 func file_app_observatory_command_command_proto_rawDescGZIP() []byte {
 	file_app_observatory_command_command_proto_rawDescOnce.Do(func() {
-		file_app_observatory_command_command_proto_rawDescData = protoimpl.X.CompressGZIP(file_app_observatory_command_command_proto_rawDescData)
+		file_app_observatory_command_command_proto_rawDescData = protoimpl.X.CompressGZIP(unsafe.Slice(unsafe.StringData(file_app_observatory_command_command_proto_rawDesc), len(file_app_observatory_command_command_proto_rawDesc)))
 	})
 	return file_app_observatory_command_command_proto_rawDescData
 }
 
 var file_app_observatory_command_command_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
-var file_app_observatory_command_command_proto_goTypes = []interface{}{
+var file_app_observatory_command_command_proto_goTypes = []any{
 	(*GetOutboundStatusRequest)(nil),      // 0: xray.core.app.observatory.command.GetOutboundStatusRequest
 	(*GetOutboundStatusResponse)(nil),     // 1: xray.core.app.observatory.command.GetOutboundStatusResponse
 	(*Config)(nil),                        // 2: xray.core.app.observatory.command.Config
@@ -219,49 +186,11 @@ func file_app_observatory_command_command_proto_init() {
 	if File_app_observatory_command_command_proto != nil {
 		return
 	}
-	if !protoimpl.UnsafeEnabled {
-		file_app_observatory_command_command_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetOutboundStatusRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_observatory_command_command_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetOutboundStatusResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_observatory_command_command_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Config); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_app_observatory_command_command_proto_rawDesc,
+			RawDescriptor: unsafe.Slice(unsafe.StringData(file_app_observatory_command_command_proto_rawDesc), len(file_app_observatory_command_command_proto_rawDesc)),
 			NumEnums:      0,
 			NumMessages:   3,
 			NumExtensions: 0,
@@ -272,7 +201,6 @@ func file_app_observatory_command_command_proto_init() {
 		MessageInfos:      file_app_observatory_command_command_proto_msgTypes,
 	}.Build()
 	File_app_observatory_command_command_proto = out.File
-	file_app_observatory_command_command_proto_rawDesc = nil
 	file_app_observatory_command_command_proto_goTypes = nil
 	file_app_observatory_command_command_proto_depIdxs = nil
 }

app/observatory/command/command_grpc.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
 // versions:
-// - protoc-gen-go-grpc v1.3.0
-// - protoc             v5.27.0
+// - protoc-gen-go-grpc v1.6.0
+// - protoc             v6.33.5
 // source: app/observatory/command/command.proto
 
 package command
@@ -15,8 +15,8 @@ import (
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the grpc package it is being compiled against.
-// Requires gRPC-Go v1.32.0 or later.
-const _ = grpc.SupportPackageIsVersion7
+// Requires gRPC-Go v1.64.0 or later.
+const _ = grpc.SupportPackageIsVersion9
 
 const (
 	ObservatoryService_GetOutboundStatus_FullMethodName = "/xray.core.app.observatory.command.ObservatoryService/GetOutboundStatus"
@@ -38,8 +38,9 @@ func NewObservatoryServiceClient(cc grpc.ClientConnInterface) ObservatoryService
 }
 
 func (c *observatoryServiceClient) GetOutboundStatus(ctx context.Context, in *GetOutboundStatusRequest, opts ...grpc.CallOption) (*GetOutboundStatusResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	out := new(GetOutboundStatusResponse)
-	err := c.cc.Invoke(ctx, ObservatoryService_GetOutboundStatus_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, ObservatoryService_GetOutboundStatus_FullMethodName, in, out, cOpts...)
 	if err != nil {
 		return nil, err
 	}
@@ -48,20 +49,24 @@ func (c *observatoryServiceClient) GetOutboundStatus(ctx context.Context, in *Ge
 
 // ObservatoryServiceServer is the server API for ObservatoryService service.
 // All implementations must embed UnimplementedObservatoryServiceServer
-// for forward compatibility
+// for forward compatibility.
 type ObservatoryServiceServer interface {
 	GetOutboundStatus(context.Context, *GetOutboundStatusRequest) (*GetOutboundStatusResponse, error)
 	mustEmbedUnimplementedObservatoryServiceServer()
 }
 
-// UnimplementedObservatoryServiceServer must be embedded to have forward compatible implementations.
-type UnimplementedObservatoryServiceServer struct {
-}
+// UnimplementedObservatoryServiceServer must be embedded to have
+// forward compatible implementations.
+//
+// NOTE: this should be embedded by value instead of pointer to avoid a nil
+// pointer dereference when methods are called.
+type UnimplementedObservatoryServiceServer struct{}
 
 func (UnimplementedObservatoryServiceServer) GetOutboundStatus(context.Context, *GetOutboundStatusRequest) (*GetOutboundStatusResponse, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method GetOutboundStatus not implemented")
+	return nil, status.Error(codes.Unimplemented, "method GetOutboundStatus not implemented")
 }
 func (UnimplementedObservatoryServiceServer) mustEmbedUnimplementedObservatoryServiceServer() {}
+func (UnimplementedObservatoryServiceServer) testEmbeddedByValue()                            {}
 
 // UnsafeObservatoryServiceServer may be embedded to opt out of forward compatibility for this service.
 // Use of this interface is not recommended, as added methods to ObservatoryServiceServer will
@@ -71,6 +76,13 @@ type UnsafeObservatoryServiceServer interface {
 }
 
 func RegisterObservatoryServiceServer(s grpc.ServiceRegistrar, srv ObservatoryServiceServer) {
+	// If the following call panics, it indicates UnimplementedObservatoryServiceServer was
+	// embedded by pointer and is nil.  This will cause panics if an
+	// unimplemented method is ever invoked, so we test this at initialization
+	// time to prevent it from happening at runtime later due to I/O.
+	if t, ok := srv.(interface{ testEmbeddedByValue() }); ok {
+		t.testEmbeddedByValue()
+	}
 	s.RegisterService(&ObservatoryService_ServiceDesc, srv)
 }
 

app/observatory/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.1
-// 	protoc        v5.27.0
+// 	protoc-gen-go v1.36.11
+// 	protoc        v6.33.5
 // source: app/observatory/config.proto
 
 package observatory
@@ -11,6 +11,7 @@ import (
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	reflect "reflect"
 	sync "sync"
+	unsafe "unsafe"
 )
 
 const (
@@ -21,20 +22,17 @@ const (
 )
 
 type ObservationResult struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	Status        []*OutboundStatus      `protobuf:"bytes,1,rep,name=status,proto3" json:"status,omitempty"`
 	unknownFields protoimpl.UnknownFields
-
-	Status []*OutboundStatus `protobuf:"bytes,1,rep,name=status,proto3" json:"status,omitempty"`
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *ObservationResult) Reset() {
 	*x = ObservationResult{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_observatory_config_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_observatory_config_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *ObservationResult) String() string {
@@ -45,7 +43,7 @@ func (*ObservationResult) ProtoMessage() {}
 
 func (x *ObservationResult) ProtoReflect() protoreflect.Message {
 	mi := &file_app_observatory_config_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -68,25 +66,22 @@ func (x *ObservationResult) GetStatus() []*OutboundStatus {
 }
 
 type HealthPingMeasurementResult struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	All           int64                  `protobuf:"varint,1,opt,name=all,proto3" json:"all,omitempty"`
+	Fail          int64                  `protobuf:"varint,2,opt,name=fail,proto3" json:"fail,omitempty"`
+	Deviation     int64                  `protobuf:"varint,3,opt,name=deviation,proto3" json:"deviation,omitempty"`
+	Average       int64                  `protobuf:"varint,4,opt,name=average,proto3" json:"average,omitempty"`
+	Max           int64                  `protobuf:"varint,5,opt,name=max,proto3" json:"max,omitempty"`
+	Min           int64                  `protobuf:"varint,6,opt,name=min,proto3" json:"min,omitempty"`
 	unknownFields protoimpl.UnknownFields
-
-	All       int64 `protobuf:"varint,1,opt,name=all,proto3" json:"all,omitempty"`
-	Fail      int64 `protobuf:"varint,2,opt,name=fail,proto3" json:"fail,omitempty"`
-	Deviation int64 `protobuf:"varint,3,opt,name=deviation,proto3" json:"deviation,omitempty"`
-	Average   int64 `protobuf:"varint,4,opt,name=average,proto3" json:"average,omitempty"`
-	Max       int64 `protobuf:"varint,5,opt,name=max,proto3" json:"max,omitempty"`
-	Min       int64 `protobuf:"varint,6,opt,name=min,proto3" json:"min,omitempty"`
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *HealthPingMeasurementResult) Reset() {
 	*x = HealthPingMeasurementResult{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_observatory_config_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_observatory_config_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *HealthPingMeasurementResult) String() string {
@@ -97,7 +92,7 @@ func (*HealthPingMeasurementResult) ProtoMessage() {}
 
 func (x *HealthPingMeasurementResult) ProtoReflect() protoreflect.Message {
 	mi := &file_app_observatory_config_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -155,10 +150,7 @@ func (x *HealthPingMeasurementResult) GetMin() int64 {
 }
 
 type OutboundStatus struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
+	state protoimpl.MessageState `protogen:"open.v1"`
 	// @Document Whether this outbound is usable
 	// @Restriction ReadOnlyForUser
 	Alive bool `protobuf:"varint,1,opt,name=alive,proto3" json:"alive,omitempty"`
@@ -177,17 +169,17 @@ type OutboundStatus struct {
 	LastSeenTime int64 `protobuf:"varint,5,opt,name=last_seen_time,json=lastSeenTime,proto3" json:"last_seen_time,omitempty"`
 	// @Document The time this outbound is tried
 	// @Type id.outboundTag
-	LastTryTime int64                        `protobuf:"varint,6,opt,name=last_try_time,json=lastTryTime,proto3" json:"last_try_time,omitempty"`
-	HealthPing  *HealthPingMeasurementResult `protobuf:"bytes,7,opt,name=health_ping,json=healthPing,proto3" json:"health_ping,omitempty"`
+	LastTryTime   int64                        `protobuf:"varint,6,opt,name=last_try_time,json=lastTryTime,proto3" json:"last_try_time,omitempty"`
+	HealthPing    *HealthPingMeasurementResult `protobuf:"bytes,7,opt,name=health_ping,json=healthPing,proto3" json:"health_ping,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *OutboundStatus) Reset() {
 	*x = OutboundStatus{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_observatory_config_proto_msgTypes[2]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_observatory_config_proto_msgTypes[2]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *OutboundStatus) String() string {
@@ -198,7 +190,7 @@ func (*OutboundStatus) ProtoMessage() {}
 
 func (x *OutboundStatus) ProtoReflect() protoreflect.Message {
 	mi := &file_app_observatory_config_proto_msgTypes[2]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -263,10 +255,7 @@ func (x *OutboundStatus) GetHealthPing() *HealthPingMeasurementResult {
 }
 
 type ProbeResult struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
+	state protoimpl.MessageState `protogen:"open.v1"`
 	// @Document Whether this outbound is usable
 	// @Restriction ReadOnlyForUser
 	Alive bool `protobuf:"varint,1,opt,name=alive,proto3" json:"alive,omitempty"`
@@ -277,15 +266,15 @@ type ProbeResult struct {
 	// @Document The error caused this outbound failed to relay probe request
 	// @Restriction NotMachineReadable
 	LastErrorReason string `protobuf:"bytes,3,opt,name=last_error_reason,json=lastErrorReason,proto3" json:"last_error_reason,omitempty"`
+	unknownFields   protoimpl.UnknownFields
+	sizeCache       protoimpl.SizeCache
 }
 
 func (x *ProbeResult) Reset() {
 	*x = ProbeResult{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_observatory_config_proto_msgTypes[3]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_observatory_config_proto_msgTypes[3]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *ProbeResult) String() string {
@@ -296,7 +285,7 @@ func (*ProbeResult) ProtoMessage() {}
 
 func (x *ProbeResult) ProtoReflect() protoreflect.Message {
 	mi := &file_app_observatory_config_proto_msgTypes[3]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -333,22 +322,19 @@ func (x *ProbeResult) GetLastErrorReason() string {
 }
 
 type Intensity struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
+	state protoimpl.MessageState `protogen:"open.v1"`
 	// @Document The time interval for a probe request in ms.
 	// @Type time.ms
 	ProbeInterval uint32 `protobuf:"varint,1,opt,name=probe_interval,json=probeInterval,proto3" json:"probe_interval,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *Intensity) Reset() {
 	*x = Intensity{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_observatory_config_proto_msgTypes[4]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_observatory_config_proto_msgTypes[4]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Intensity) String() string {
@@ -359,7 +345,7 @@ func (*Intensity) ProtoMessage() {}
 
 func (x *Intensity) ProtoReflect() protoreflect.Message {
 	mi := &file_app_observatory_config_proto_msgTypes[4]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -382,24 +368,21 @@ func (x *Intensity) GetProbeInterval() uint32 {
 }
 
 type Config struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
+	state protoimpl.MessageState `protogen:"open.v1"`
 	// @Document The selectors for outbound under observation
 	SubjectSelector   []string `protobuf:"bytes,2,rep,name=subject_selector,json=subjectSelector,proto3" json:"subject_selector,omitempty"`
 	ProbeUrl          string   `protobuf:"bytes,3,opt,name=probe_url,json=probeUrl,proto3" json:"probe_url,omitempty"`
 	ProbeInterval     int64    `protobuf:"varint,4,opt,name=probe_interval,json=probeInterval,proto3" json:"probe_interval,omitempty"`
 	EnableConcurrency bool     `protobuf:"varint,5,opt,name=enable_concurrency,json=enableConcurrency,proto3" json:"enable_concurrency,omitempty"`
+	unknownFields     protoimpl.UnknownFields
+	sizeCache         protoimpl.SizeCache
 }
 
 func (x *Config) Reset() {
 	*x = Config{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_observatory_config_proto_msgTypes[5]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_observatory_config_proto_msgTypes[5]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Config) String() string {
@@ -410,7 +393,7 @@ func (*Config) ProtoMessage() {}
 
 func (x *Config) ProtoReflect() protoreflect.Message {
 	mi := &file_app_observatory_config_proto_msgTypes[5]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -455,88 +438,54 @@ func (x *Config) GetEnableConcurrency() bool {
 
 var File_app_observatory_config_proto protoreflect.FileDescriptor
 
-var file_app_observatory_config_proto_rawDesc = []byte{
-	0x0a, 0x1c, 0x61, 0x70, 0x70, 0x2f, 0x6f, 0x62, 0x73, 0x65, 0x72, 0x76, 0x61, 0x74, 0x6f, 0x72,
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-	0x6e, 0x74, 0x65, 0x6e, 0x73, 0x69, 0x74, 0x79, 0x12, 0x25, 0x0a, 0x0e, 0x70, 0x72, 0x6f, 0x62,
-	0x65, 0x5f, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x76, 0x61, 0x6c, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0d,
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-	0x63, 0x75, 0x72, 0x72, 0x65, 0x6e, 0x63, 0x79, 0x42, 0x5e, 0x0a, 0x18, 0x63, 0x6f, 0x6d, 0x2e,
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-	0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72,
-	0x65, 0x2f, 0x61, 0x70, 0x70, 0x2f, 0x6f, 0x62, 0x73, 0x65, 0x72, 0x76, 0x61, 0x74, 0x6f, 0x72,
-	0x79, 0xaa, 0x02, 0x14, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x4f, 0x62, 0x73,
-	0x65, 0x72, 0x76, 0x61, 0x74, 0x6f, 0x72, 0x79, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
-}
+const file_app_observatory_config_proto_rawDesc = "" +
+	"\n" +
+	"\x1capp/observatory/config.proto\x12\x19xray.core.app.observatory\"V\n" +
+	"\x11ObservationResult\x12A\n" +
+	"\x06status\x18\x01 \x03(\v2).xray.core.app.observatory.OutboundStatusR\x06status\"\x9f\x01\n" +
+	"\x1bHealthPingMeasurementResult\x12\x10\n" +
+	"\x03all\x18\x01 \x01(\x03R\x03all\x12\x12\n" +
+	"\x04fail\x18\x02 \x01(\x03R\x04fail\x12\x1c\n" +
+	"\tdeviation\x18\x03 \x01(\x03R\tdeviation\x12\x18\n" +
+	"\aaverage\x18\x04 \x01(\x03R\aaverage\x12\x10\n" +
+	"\x03max\x18\x05 \x01(\x03R\x03max\x12\x10\n" +
+	"\x03min\x18\x06 \x01(\x03R\x03min\"\xae\x02\n" +
+	"\x0eOutboundStatus\x12\x14\n" +
+	"\x05alive\x18\x01 \x01(\bR\x05alive\x12\x14\n" +
+	"\x05delay\x18\x02 \x01(\x03R\x05delay\x12*\n" +
+	"\x11last_error_reason\x18\x03 \x01(\tR\x0flastErrorReason\x12!\n" +
+	"\foutbound_tag\x18\x04 \x01(\tR\voutboundTag\x12$\n" +
+	"\x0elast_seen_time\x18\x05 \x01(\x03R\flastSeenTime\x12\"\n" +
+	"\rlast_try_time\x18\x06 \x01(\x03R\vlastTryTime\x12W\n" +
+	"\vhealth_ping\x18\a \x01(\v26.xray.core.app.observatory.HealthPingMeasurementResultR\n" +
+	"healthPing\"e\n" +
+	"\vProbeResult\x12\x14\n" +
+	"\x05alive\x18\x01 \x01(\bR\x05alive\x12\x14\n" +
+	"\x05delay\x18\x02 \x01(\x03R\x05delay\x12*\n" +
+	"\x11last_error_reason\x18\x03 \x01(\tR\x0flastErrorReason\"2\n" +
+	"\tIntensity\x12%\n" +
+	"\x0eprobe_interval\x18\x01 \x01(\rR\rprobeInterval\"\xa6\x01\n" +
+	"\x06Config\x12)\n" +
+	"\x10subject_selector\x18\x02 \x03(\tR\x0fsubjectSelector\x12\x1b\n" +
+	"\tprobe_url\x18\x03 \x01(\tR\bprobeUrl\x12%\n" +
+	"\x0eprobe_interval\x18\x04 \x01(\x03R\rprobeInterval\x12-\n" +
+	"\x12enable_concurrency\x18\x05 \x01(\bR\x11enableConcurrencyB^\n" +
+	"\x18com.xray.app.observatoryP\x01Z)github.com/xtls/xray-core/app/observatory\xaa\x02\x14Xray.App.Observatoryb\x06proto3"
 
 var (
 	file_app_observatory_config_proto_rawDescOnce sync.Once
-	file_app_observatory_config_proto_rawDescData = file_app_observatory_config_proto_rawDesc
+	file_app_observatory_config_proto_rawDescData []byte
 )
 
 func file_app_observatory_config_proto_rawDescGZIP() []byte {
 	file_app_observatory_config_proto_rawDescOnce.Do(func() {
-		file_app_observatory_config_proto_rawDescData = protoimpl.X.CompressGZIP(file_app_observatory_config_proto_rawDescData)
+		file_app_observatory_config_proto_rawDescData = protoimpl.X.CompressGZIP(unsafe.Slice(unsafe.StringData(file_app_observatory_config_proto_rawDesc), len(file_app_observatory_config_proto_rawDesc)))
 	})
 	return file_app_observatory_config_proto_rawDescData
 }
 
 var file_app_observatory_config_proto_msgTypes = make([]protoimpl.MessageInfo, 6)
-var file_app_observatory_config_proto_goTypes = []interface{}{
+var file_app_observatory_config_proto_goTypes = []any{
 	(*ObservationResult)(nil),           // 0: xray.core.app.observatory.ObservationResult
 	(*HealthPingMeasurementResult)(nil), // 1: xray.core.app.observatory.HealthPingMeasurementResult
 	(*OutboundStatus)(nil),              // 2: xray.core.app.observatory.OutboundStatus
@@ -559,85 +508,11 @@ func file_app_observatory_config_proto_init() {
 	if File_app_observatory_config_proto != nil {
 		return
 	}
-	if !protoimpl.UnsafeEnabled {
-		file_app_observatory_config_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ObservationResult); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_observatory_config_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*HealthPingMeasurementResult); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_observatory_config_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*OutboundStatus); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_observatory_config_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ProbeResult); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_observatory_config_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Intensity); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_observatory_config_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Config); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_app_observatory_config_proto_rawDesc,
+			RawDescriptor: unsafe.Slice(unsafe.StringData(file_app_observatory_config_proto_rawDesc), len(file_app_observatory_config_proto_rawDesc)),
 			NumEnums:      0,
 			NumMessages:   6,
 			NumExtensions: 0,
@@ -648,7 +523,6 @@ func file_app_observatory_config_proto_init() {
 		MessageInfos:      file_app_observatory_config_proto_msgTypes,
 	}.Build()
 	File_app_observatory_config_proto = out.File
-	file_app_observatory_config_proto_rawDesc = nil
 	file_app_observatory_config_proto_goTypes = nil
 	file_app_observatory_config_proto_depIdxs = nil
 }

app/observatory/observatory.go

@@ -1,3 +1 @@
 package observatory
-
-//go:generate go run github.com/xtls/xray-core/common/errors/errorgen

app/observatory/observer.go

@@ -5,6 +5,7 @@ import (
 	"net"
 	"net/http"
 	"net/url"
+	"slices"
 	"sort"
 	"sync"
 	"time"
@@ -15,9 +16,11 @@ import (
 	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/common/signal/done"
 	"github.com/xtls/xray-core/common/task"
+	"github.com/xtls/xray-core/common/utils"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/extension"
 	"github.com/xtls/xray-core/features/outbound"
+	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/transport/internet/tagged"
 	"google.golang.org/protobuf/proto"
 )
@@ -31,7 +34,8 @@ type Observer struct {
 
 	finished *done.Instance
 
-	ohm outbound.Manager
+	ohm        outbound.Manager
+	dispatcher routing.Dispatcher
 }
 
 func (o *Observer) GetObservation(ctx context.Context) (proto.Message, error) {
@@ -67,7 +71,7 @@ func (o *Observer) background() {
 
 		outbounds := hs.Select(o.config.SubjectSelector)
 
-		o.updateStatus(outbounds)
+		o.clearRemovedOutbounds(outbounds)
 
 		sleepTime := time.Second * 10
 		if o.config.ProbeInterval != 0 {
@@ -108,11 +112,19 @@ func (o *Observer) background() {
 	}
 }
 
-func (o *Observer) updateStatus(outbounds []string) {
+func (o *Observer) clearRemovedOutbounds(outbounds []string) {
 	o.statusLock.Lock()
 	defer o.statusLock.Unlock()
-	// TODO should remove old inbound that is removed
-	_ = outbounds
+	if len(o.status) == 0 {
+		return
+	}
+	var pruned []*OutboundStatus
+	for _, status := range o.status {
+		if slices.Contains(outbounds, status.OutboundTag) {
+			pruned = append(pruned, status)
+		}
+	}
+	o.status = pruned
 }
 
 func (o *Observer) probe(outbound string) ProbeResult {
@@ -131,7 +143,7 @@ func (o *Observer) probe(outbound string) ProbeResult {
 					return errors.New("cannot understand address").Base(err)
 				}
 				trackedCtx := session.TrackedConnectionError(o.ctx, errorCollectorForRequest)
-				conn, err := tagged.Dialer(trackedCtx, dest, outbound)
+				conn, err := tagged.Dialer(trackedCtx, o.dispatcher, dest, outbound)
 				if err != nil {
 					return errors.New("cannot dial remote address ", dest).Base(err)
 				}
@@ -160,7 +172,9 @@ func (o *Observer) probe(outbound string) ProbeResult {
 		if o.config.ProbeUrl != "" {
 			probeURL = o.config.ProbeUrl
 		}
-		response, err := httpClient.Get(probeURL)
+		req, _ := http.NewRequest(http.MethodGet, probeURL, nil)
+		utils.TryDefaultHeadersWith(req.Header, "nav")
+		response, err := httpClient.Do(req)
 		if err != nil {
 			return errors.New("outbound failed to relay connection").Base(err)
 		}
@@ -172,7 +186,7 @@ func (o *Observer) probe(outbound string) ProbeResult {
 		return nil
 	})
 	if err != nil {
-		var errorMessage = "the outbound " + outbound + " is dead: GET request failed:" + err.Error() + "with outbound handler report underlying connection failed"
+		errorMessage := "the outbound " + outbound + " is dead: GET request failed:" + err.Error() + "with outbound handler report underlying connection failed"
 		errors.LogInfoInner(o.ctx, errorCollectorForRequest.UnderlyingError(), errorMessage)
 		return ProbeResult{Alive: false, LastErrorReason: errorMessage}
 	}
@@ -215,16 +229,19 @@ func (o *Observer) findStatusLocationLockHolderOnly(outbound string) int {
 
 func New(ctx context.Context, config *Config) (*Observer, error) {
 	var outboundManager outbound.Manager
-	err := core.RequireFeatures(ctx, func(om outbound.Manager) {
+	var dispatcher routing.Dispatcher
+	err := core.RequireFeatures(ctx, func(om outbound.Manager, rd routing.Dispatcher) {
 		outboundManager = om
+		dispatcher = rd
 	})
 	if err != nil {
 		return nil, errors.New("Cannot get depended features").Base(err)
 	}
 	return &Observer{
-		config: config,
-		ctx:    ctx,
-		ohm:    outboundManager,
+		config:     config,
+		ctx:        ctx,
+		ohm:        outboundManager,
+		dispatcher: dispatcher,
 	}, nil
 }
 

app/observatory/observer_test.go

@@ -0,0 +1,64 @@
+package observatory
+
+import "testing"
+
+func TestObserverUpdateStatusPrunesStaleOutbounds(t *testing.T) {
+	observer := &Observer{
+		status: []*OutboundStatus{
+			{
+				OutboundTag:     "keep",
+				Alive:           true,
+				Delay:           42,
+				LastErrorReason: "",
+				LastSeenTime:    111,
+				LastTryTime:     222,
+			},
+			{
+				OutboundTag:     "drop",
+				Alive:           false,
+				Delay:           99999999,
+				LastErrorReason: "probe failed",
+				LastSeenTime:    333,
+				LastTryTime:     444,
+			},
+		},
+	}
+
+	observer.clearRemovedOutbounds([]string{"keep"})
+
+	if len(observer.status) != 1 {
+		t.Fatalf("expected 1 status after pruning, got %d", len(observer.status))
+	}
+
+	got := observer.status[0]
+	if got.OutboundTag != "keep" {
+		t.Fatalf("expected remaining status for keep, got %q", got.OutboundTag)
+	}
+	if !got.Alive {
+		t.Fatal("expected remaining status to preserve Alive field")
+	}
+	if got.Delay != 42 {
+		t.Fatalf("expected remaining status to preserve Delay, got %d", got.Delay)
+	}
+	if got.LastSeenTime != 111 {
+		t.Fatalf("expected remaining status to preserve LastSeenTime, got %d", got.LastSeenTime)
+	}
+	if got.LastTryTime != 222 {
+		t.Fatalf("expected remaining status to preserve LastTryTime, got %d", got.LastTryTime)
+	}
+}
+
+func TestObserverUpdateStatusClearsWhenNoOutboundsRemain(t *testing.T) {
+	observer := &Observer{
+		status: []*OutboundStatus{
+			{OutboundTag: "drop-1"},
+			{OutboundTag: "drop-2"},
+		},
+	}
+
+	observer.clearRemovedOutbounds(nil)
+
+	if len(observer.status) != 0 {
+		t.Fatalf("expected all statuses to be removed, got %d", len(observer.status))
+	}
+}

app/policy/config.go

@@ -73,6 +73,7 @@ func (p *Policy) ToCorePolicy() policy.Session {
 	if p.Stats != nil {
 		cp.Stats.UserUplink = p.Stats.UserUplink
 		cp.Stats.UserDownlink = p.Stats.UserDownlink
+		cp.Stats.UserOnline = p.Stats.UserOnline
 	}
 	if p.Buffer != nil {
 		cp.Buffer.PerConnection = p.Buffer.Connection

app/policy/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.1
-// 	protoc        v5.27.0
+// 	protoc-gen-go v1.36.11
+// 	protoc        v6.33.5
 // source: app/policy/config.proto
 
 package policy
@@ -11,6 +11,7 @@ import (
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	reflect "reflect"
 	sync "sync"
+	unsafe "unsafe"
 )
 
 const (
@@ -21,20 +22,17 @@ const (
 )
 
 type Second struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	Value         uint32                 `protobuf:"varint,1,opt,name=value,proto3" json:"value,omitempty"`
 	unknownFields protoimpl.UnknownFields
-
-	Value uint32 `protobuf:"varint,1,opt,name=value,proto3" json:"value,omitempty"`
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *Second) Reset() {
 	*x = Second{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_policy_config_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_policy_config_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Second) String() string {
@@ -45,7 +43,7 @@ func (*Second) ProtoMessage() {}
 
 func (x *Second) ProtoReflect() protoreflect.Message {
 	mi := &file_app_policy_config_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -68,22 +66,19 @@ func (x *Second) GetValue() uint32 {
 }
 
 type Policy struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	Timeout       *Policy_Timeout        `protobuf:"bytes,1,opt,name=timeout,proto3" json:"timeout,omitempty"`
+	Stats         *Policy_Stats          `protobuf:"bytes,2,opt,name=stats,proto3" json:"stats,omitempty"`
+	Buffer        *Policy_Buffer         `protobuf:"bytes,3,opt,name=buffer,proto3" json:"buffer,omitempty"`
 	unknownFields protoimpl.UnknownFields
-
-	Timeout *Policy_Timeout `protobuf:"bytes,1,opt,name=timeout,proto3" json:"timeout,omitempty"`
-	Stats   *Policy_Stats   `protobuf:"bytes,2,opt,name=stats,proto3" json:"stats,omitempty"`
-	Buffer  *Policy_Buffer  `protobuf:"bytes,3,opt,name=buffer,proto3" json:"buffer,omitempty"`
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *Policy) Reset() {
 	*x = Policy{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_policy_config_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_policy_config_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Policy) String() string {
@@ -94,7 +89,7 @@ func (*Policy) ProtoMessage() {}
 
 func (x *Policy) ProtoReflect() protoreflect.Message {
 	mi := &file_app_policy_config_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -131,20 +126,17 @@ func (x *Policy) GetBuffer() *Policy_Buffer {
 }
 
 type SystemPolicy struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	Stats         *SystemPolicy_Stats    `protobuf:"bytes,1,opt,name=stats,proto3" json:"stats,omitempty"`
 	unknownFields protoimpl.UnknownFields
-
-	Stats *SystemPolicy_Stats `protobuf:"bytes,1,opt,name=stats,proto3" json:"stats,omitempty"`
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *SystemPolicy) Reset() {
 	*x = SystemPolicy{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_policy_config_proto_msgTypes[2]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_policy_config_proto_msgTypes[2]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *SystemPolicy) String() string {
@@ -155,7 +147,7 @@ func (*SystemPolicy) ProtoMessage() {}
 
 func (x *SystemPolicy) ProtoReflect() protoreflect.Message {
 	mi := &file_app_policy_config_proto_msgTypes[2]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -178,21 +170,18 @@ func (x *SystemPolicy) GetStats() *SystemPolicy_Stats {
 }
 
 type Config struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	Level         map[uint32]*Policy     `protobuf:"bytes,1,rep,name=level,proto3" json:"level,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
+	System        *SystemPolicy          `protobuf:"bytes,2,opt,name=system,proto3" json:"system,omitempty"`
 	unknownFields protoimpl.UnknownFields
-
-	Level  map[uint32]*Policy `protobuf:"bytes,1,rep,name=level,proto3" json:"level,omitempty" protobuf_key:"varint,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
-	System *SystemPolicy      `protobuf:"bytes,2,opt,name=system,proto3" json:"system,omitempty"`
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *Config) Reset() {
 	*x = Config{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_policy_config_proto_msgTypes[3]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_policy_config_proto_msgTypes[3]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Config) String() string {
@@ -203,7 +192,7 @@ func (*Config) ProtoMessage() {}
 
 func (x *Config) ProtoReflect() protoreflect.Message {
 	mi := &file_app_policy_config_proto_msgTypes[3]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -234,23 +223,20 @@ func (x *Config) GetSystem() *SystemPolicy {
 
 // Timeout is a message for timeout settings in various stages, in seconds.
 type Policy_Timeout struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Handshake      *Second `protobuf:"bytes,1,opt,name=handshake,proto3" json:"handshake,omitempty"`
-	ConnectionIdle *Second `protobuf:"bytes,2,opt,name=connection_idle,json=connectionIdle,proto3" json:"connection_idle,omitempty"`
-	UplinkOnly     *Second `protobuf:"bytes,3,opt,name=uplink_only,json=uplinkOnly,proto3" json:"uplink_only,omitempty"`
-	DownlinkOnly   *Second `protobuf:"bytes,4,opt,name=downlink_only,json=downlinkOnly,proto3" json:"downlink_only,omitempty"`
+	state          protoimpl.MessageState `protogen:"open.v1"`
+	Handshake      *Second                `protobuf:"bytes,1,opt,name=handshake,proto3" json:"handshake,omitempty"`
+	ConnectionIdle *Second                `protobuf:"bytes,2,opt,name=connection_idle,json=connectionIdle,proto3" json:"connection_idle,omitempty"`
+	UplinkOnly     *Second                `protobuf:"bytes,3,opt,name=uplink_only,json=uplinkOnly,proto3" json:"uplink_only,omitempty"`
+	DownlinkOnly   *Second                `protobuf:"bytes,4,opt,name=downlink_only,json=downlinkOnly,proto3" json:"downlink_only,omitempty"`
+	unknownFields  protoimpl.UnknownFields
+	sizeCache      protoimpl.SizeCache
 }
 
 func (x *Policy_Timeout) Reset() {
 	*x = Policy_Timeout{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_policy_config_proto_msgTypes[4]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_policy_config_proto_msgTypes[4]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Policy_Timeout) String() string {
@@ -261,7 +247,7 @@ func (*Policy_Timeout) ProtoMessage() {}
 
 func (x *Policy_Timeout) ProtoReflect() protoreflect.Message {
 	mi := &file_app_policy_config_proto_msgTypes[4]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -305,21 +291,19 @@ func (x *Policy_Timeout) GetDownlinkOnly() *Second {
 }
 
 type Policy_Stats struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	UserUplink    bool                   `protobuf:"varint,1,opt,name=user_uplink,json=userUplink,proto3" json:"user_uplink,omitempty"`
+	UserDownlink  bool                   `protobuf:"varint,2,opt,name=user_downlink,json=userDownlink,proto3" json:"user_downlink,omitempty"`
+	UserOnline    bool                   `protobuf:"varint,3,opt,name=user_online,json=userOnline,proto3" json:"user_online,omitempty"`
 	unknownFields protoimpl.UnknownFields
-
-	UserUplink   bool `protobuf:"varint,1,opt,name=user_uplink,json=userUplink,proto3" json:"user_uplink,omitempty"`
-	UserDownlink bool `protobuf:"varint,2,opt,name=user_downlink,json=userDownlink,proto3" json:"user_downlink,omitempty"`
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *Policy_Stats) Reset() {
 	*x = Policy_Stats{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_policy_config_proto_msgTypes[5]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_policy_config_proto_msgTypes[5]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Policy_Stats) String() string {
@@ -330,7 +314,7 @@ func (*Policy_Stats) ProtoMessage() {}
 
 func (x *Policy_Stats) ProtoReflect() protoreflect.Message {
 	mi := &file_app_policy_config_proto_msgTypes[5]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -359,22 +343,26 @@ func (x *Policy_Stats) GetUserDownlink() bool {
 	return false
 }
 
-type Policy_Buffer struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
+func (x *Policy_Stats) GetUserOnline() bool {
+	if x != nil {
+		return x.UserOnline
+	}
+	return false
+}
 
+type Policy_Buffer struct {
+	state protoimpl.MessageState `protogen:"open.v1"`
 	// Buffer size per connection, in bytes. -1 for unlimited buffer.
-	Connection int32 `protobuf:"varint,1,opt,name=connection,proto3" json:"connection,omitempty"`
+	Connection    int32 `protobuf:"varint,1,opt,name=connection,proto3" json:"connection,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *Policy_Buffer) Reset() {
 	*x = Policy_Buffer{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_policy_config_proto_msgTypes[6]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_policy_config_proto_msgTypes[6]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Policy_Buffer) String() string {
@@ -385,7 +373,7 @@ func (*Policy_Buffer) ProtoMessage() {}
 
 func (x *Policy_Buffer) ProtoReflect() protoreflect.Message {
 	mi := &file_app_policy_config_proto_msgTypes[6]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -408,23 +396,20 @@ func (x *Policy_Buffer) GetConnection() int32 {
 }
 
 type SystemPolicy_Stats struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	InboundUplink    bool `protobuf:"varint,1,opt,name=inbound_uplink,json=inboundUplink,proto3" json:"inbound_uplink,omitempty"`
-	InboundDownlink  bool `protobuf:"varint,2,opt,name=inbound_downlink,json=inboundDownlink,proto3" json:"inbound_downlink,omitempty"`
-	OutboundUplink   bool `protobuf:"varint,3,opt,name=outbound_uplink,json=outboundUplink,proto3" json:"outbound_uplink,omitempty"`
-	OutboundDownlink bool `protobuf:"varint,4,opt,name=outbound_downlink,json=outboundDownlink,proto3" json:"outbound_downlink,omitempty"`
+	state            protoimpl.MessageState `protogen:"open.v1"`
+	InboundUplink    bool                   `protobuf:"varint,1,opt,name=inbound_uplink,json=inboundUplink,proto3" json:"inbound_uplink,omitempty"`
+	InboundDownlink  bool                   `protobuf:"varint,2,opt,name=inbound_downlink,json=inboundDownlink,proto3" json:"inbound_downlink,omitempty"`
+	OutboundUplink   bool                   `protobuf:"varint,3,opt,name=outbound_uplink,json=outboundUplink,proto3" json:"outbound_uplink,omitempty"`
+	OutboundDownlink bool                   `protobuf:"varint,4,opt,name=outbound_downlink,json=outboundDownlink,proto3" json:"outbound_downlink,omitempty"`
+	unknownFields    protoimpl.UnknownFields
+	sizeCache        protoimpl.SizeCache
 }
 
 func (x *SystemPolicy_Stats) Reset() {
 	*x = SystemPolicy_Stats{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_policy_config_proto_msgTypes[7]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_policy_config_proto_msgTypes[7]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *SystemPolicy_Stats) String() string {
@@ -435,7 +420,7 @@ func (*SystemPolicy_Stats) ProtoMessage() {}
 
 func (x *SystemPolicy_Stats) ProtoReflect() protoreflect.Message {
 	mi := &file_app_policy_config_proto_msgTypes[7]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -480,97 +465,61 @@ func (x *SystemPolicy_Stats) GetOutboundDownlink() bool {
 
 var File_app_policy_config_proto protoreflect.FileDescriptor
 
-var file_app_policy_config_proto_rawDesc = []byte{
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-	0xaf, 0x01, 0x0a, 0x05, 0x53, 0x74, 0x61, 0x74, 0x73, 0x12, 0x25, 0x0a, 0x0e, 0x69, 0x6e, 0x62,
-	0x6f, 0x75, 0x6e, 0x64, 0x5f, 0x75, 0x70, 0x6c, 0x69, 0x6e, 0x6b, 0x18, 0x01, 0x20, 0x01, 0x28,
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-	0x12, 0x29, 0x0a, 0x10, 0x69, 0x6e, 0x62, 0x6f, 0x75, 0x6e, 0x64, 0x5f, 0x64, 0x6f, 0x77, 0x6e,
-	0x6c, 0x69, 0x6e, 0x6b, 0x18, 0x02, 0x20, 0x01, 0x28, 0x08, 0x52, 0x0f, 0x69, 0x6e, 0x62, 0x6f,
-	0x75, 0x6e, 0x64, 0x44, 0x6f, 0x77, 0x6e, 0x6c, 0x69, 0x6e, 0x6b, 0x12, 0x27, 0x0a, 0x0f, 0x6f,
-	0x75, 0x74, 0x62, 0x6f, 0x75, 0x6e, 0x64, 0x5f, 0x75, 0x70, 0x6c, 0x69, 0x6e, 0x6b, 0x18, 0x03,
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-	0x10, 0x6f, 0x75, 0x74, 0x62, 0x6f, 0x75, 0x6e, 0x64, 0x44, 0x6f, 0x77, 0x6e, 0x6c, 0x69, 0x6e,
-	0x6b, 0x22, 0xcc, 0x01, 0x0a, 0x06, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x38, 0x0a, 0x05,
-	0x6c, 0x65, 0x76, 0x65, 0x6c, 0x18, 0x01, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x22, 0x2e, 0x78, 0x72,
-	0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x70, 0x6f, 0x6c, 0x69, 0x63, 0x79, 0x2e, 0x43, 0x6f,
-	0x6e, 0x66, 0x69, 0x67, 0x2e, 0x4c, 0x65, 0x76, 0x65, 0x6c, 0x45, 0x6e, 0x74, 0x72, 0x79, 0x52,
-	0x05, 0x6c, 0x65, 0x76, 0x65, 0x6c, 0x12, 0x35, 0x0a, 0x06, 0x73, 0x79, 0x73, 0x74, 0x65, 0x6d,
-	0x18, 0x02, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x1d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70,
-	0x70, 0x2e, 0x70, 0x6f, 0x6c, 0x69, 0x63, 0x79, 0x2e, 0x53, 0x79, 0x73, 0x74, 0x65, 0x6d, 0x50,
-	0x6f, 0x6c, 0x69, 0x63, 0x79, 0x52, 0x06, 0x73, 0x79, 0x73, 0x74, 0x65, 0x6d, 0x1a, 0x51, 0x0a,
-	0x0a, 0x4c, 0x65, 0x76, 0x65, 0x6c, 0x45, 0x6e, 0x74, 0x72, 0x79, 0x12, 0x10, 0x0a, 0x03, 0x6b,
-	0x65, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0d, 0x52, 0x03, 0x6b, 0x65, 0x79, 0x12, 0x2d, 0x0a,
-	0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x17, 0x2e, 0x78,
-	0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x70, 0x6f, 0x6c, 0x69, 0x63, 0x79, 0x2e, 0x50,
-	0x6f, 0x6c, 0x69, 0x63, 0x79, 0x52, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x3a, 0x02, 0x38, 0x01,
-	0x42, 0x4f, 0x0a, 0x13, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70,
-	0x2e, 0x70, 0x6f, 0x6c, 0x69, 0x63, 0x79, 0x50, 0x01, 0x5a, 0x24, 0x67, 0x69, 0x74, 0x68, 0x75,
-	0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d,
-	0x63, 0x6f, 0x72, 0x65, 0x2f, 0x61, 0x70, 0x70, 0x2f, 0x70, 0x6f, 0x6c, 0x69, 0x63, 0x79, 0xaa,
-	0x02, 0x0f, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x50, 0x6f, 0x6c, 0x69, 0x63,
-	0x79, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
-}
+const file_app_policy_config_proto_rawDesc = "" +
+	"\n" +
+	"\x17app/policy/config.proto\x12\x0fxray.app.policy\"\x1e\n" +
+	"\x06Second\x12\x14\n" +
+	"\x05value\x18\x01 \x01(\rR\x05value\"\xc7\x04\n" +
+	"\x06Policy\x129\n" +
+	"\atimeout\x18\x01 \x01(\v2\x1f.xray.app.policy.Policy.TimeoutR\atimeout\x123\n" +
+	"\x05stats\x18\x02 \x01(\v2\x1d.xray.app.policy.Policy.StatsR\x05stats\x126\n" +
+	"\x06buffer\x18\x03 \x01(\v2\x1e.xray.app.policy.Policy.BufferR\x06buffer\x1a\xfa\x01\n" +
+	"\aTimeout\x125\n" +
+	"\thandshake\x18\x01 \x01(\v2\x17.xray.app.policy.SecondR\thandshake\x12@\n" +
+	"\x0fconnection_idle\x18\x02 \x01(\v2\x17.xray.app.policy.SecondR\x0econnectionIdle\x128\n" +
+	"\vuplink_only\x18\x03 \x01(\v2\x17.xray.app.policy.SecondR\n" +
+	"uplinkOnly\x12<\n" +
+	"\rdownlink_only\x18\x04 \x01(\v2\x17.xray.app.policy.SecondR\fdownlinkOnly\x1an\n" +
+	"\x05Stats\x12\x1f\n" +
+	"\vuser_uplink\x18\x01 \x01(\bR\n" +
+	"userUplink\x12#\n" +
+	"\ruser_downlink\x18\x02 \x01(\bR\fuserDownlink\x12\x1f\n" +
+	"\vuser_online\x18\x03 \x01(\bR\n" +
+	"userOnline\x1a(\n" +
+	"\x06Buffer\x12\x1e\n" +
+	"\n" +
+	"connection\x18\x01 \x01(\x05R\n" +
+	"connection\"\xfb\x01\n" +
+	"\fSystemPolicy\x129\n" +
+	"\x05stats\x18\x01 \x01(\v2#.xray.app.policy.SystemPolicy.StatsR\x05stats\x1a\xaf\x01\n" +
+	"\x05Stats\x12%\n" +
+	"\x0einbound_uplink\x18\x01 \x01(\bR\rinboundUplink\x12)\n" +
+	"\x10inbound_downlink\x18\x02 \x01(\bR\x0finboundDownlink\x12'\n" +
+	"\x0foutbound_uplink\x18\x03 \x01(\bR\x0eoutboundUplink\x12+\n" +
+	"\x11outbound_downlink\x18\x04 \x01(\bR\x10outboundDownlink\"\xcc\x01\n" +
+	"\x06Config\x128\n" +
+	"\x05level\x18\x01 \x03(\v2\".xray.app.policy.Config.LevelEntryR\x05level\x125\n" +
+	"\x06system\x18\x02 \x01(\v2\x1d.xray.app.policy.SystemPolicyR\x06system\x1aQ\n" +
+	"\n" +
+	"LevelEntry\x12\x10\n" +
+	"\x03key\x18\x01 \x01(\rR\x03key\x12-\n" +
+	"\x05value\x18\x02 \x01(\v2\x17.xray.app.policy.PolicyR\x05value:\x028\x01BO\n" +
+	"\x13com.xray.app.policyP\x01Z$github.com/xtls/xray-core/app/policy\xaa\x02\x0fXray.App.Policyb\x06proto3"
 
 var (
 	file_app_policy_config_proto_rawDescOnce sync.Once
-	file_app_policy_config_proto_rawDescData = file_app_policy_config_proto_rawDesc
+	file_app_policy_config_proto_rawDescData []byte
 )
 
 func file_app_policy_config_proto_rawDescGZIP() []byte {
 	file_app_policy_config_proto_rawDescOnce.Do(func() {
-		file_app_policy_config_proto_rawDescData = protoimpl.X.CompressGZIP(file_app_policy_config_proto_rawDescData)
+		file_app_policy_config_proto_rawDescData = protoimpl.X.CompressGZIP(unsafe.Slice(unsafe.StringData(file_app_policy_config_proto_rawDesc), len(file_app_policy_config_proto_rawDesc)))
 	})
 	return file_app_policy_config_proto_rawDescData
 }
 
 var file_app_policy_config_proto_msgTypes = make([]protoimpl.MessageInfo, 9)
-var file_app_policy_config_proto_goTypes = []interface{}{
+var file_app_policy_config_proto_goTypes = []any{
 	(*Second)(nil),             // 0: xray.app.policy.Second
 	(*Policy)(nil),             // 1: xray.app.policy.Policy
 	(*SystemPolicy)(nil),       // 2: xray.app.policy.SystemPolicy
@@ -605,109 +554,11 @@ func file_app_policy_config_proto_init() {
 	if File_app_policy_config_proto != nil {
 		return
 	}
-	if !protoimpl.UnsafeEnabled {
-		file_app_policy_config_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Second); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_policy_config_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Policy); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_policy_config_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SystemPolicy); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_policy_config_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Config); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_policy_config_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Policy_Timeout); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_policy_config_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Policy_Stats); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_policy_config_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Policy_Buffer); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_policy_config_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SystemPolicy_Stats); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_app_policy_config_proto_rawDesc,
+			RawDescriptor: unsafe.Slice(unsafe.StringData(file_app_policy_config_proto_rawDesc), len(file_app_policy_config_proto_rawDesc)),
 			NumEnums:      0,
 			NumMessages:   9,
 			NumExtensions: 0,
@@ -718,7 +569,6 @@ func file_app_policy_config_proto_init() {
 		MessageInfos:      file_app_policy_config_proto_msgTypes,
 	}.Build()
 	File_app_policy_config_proto = out.File
-	file_app_policy_config_proto_rawDesc = nil
 	file_app_policy_config_proto_goTypes = nil
 	file_app_policy_config_proto_depIdxs = nil
 }

app/policy/config.proto

@@ -22,6 +22,7 @@ message Policy {
   message Stats {
     bool user_uplink = 1;
     bool user_downlink = 2;
+    bool user_online = 3;
   }
 
   message Buffer {

app/policy/policy.go

@@ -1,4 +1,2 @@
 // Package policy is an implementation of policy.Manager feature.
 package policy
-
-//go:generate go run github.com/xtls/xray-core/common/errors/errorgen

app/proxyman/command/command.go

@@ -3,8 +3,10 @@ package command
 import (
 	"context"
 
+	"github.com/xtls/xray-core/app/commander"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/common/protocol"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/inbound"
 	"github.com/xtls/xray-core/features/outbound"
@@ -98,6 +100,68 @@ func (s *handlerServer) AlterInbound(ctx context.Context, request *AlterInboundR
 	return &AlterInboundResponse{}, operation.ApplyInbound(ctx, handler)
 }
 
+func (s *handlerServer) ListInbounds(ctx context.Context, request *ListInboundsRequest) (*ListInboundsResponse, error) {
+	handlers := s.ihm.ListHandlers(ctx)
+	response := &ListInboundsResponse{}
+	if request.GetIsOnlyTags() {
+		for _, handler := range handlers {
+			response.Inbounds = append(response.Inbounds, &core.InboundHandlerConfig{
+				Tag: handler.Tag(),
+			})
+		}
+	} else {
+		for _, handler := range handlers {
+			response.Inbounds = append(response.Inbounds, &core.InboundHandlerConfig{
+				Tag:              handler.Tag(),
+				ReceiverSettings: handler.ReceiverSettings(),
+				ProxySettings:    handler.ProxySettings(),
+			})
+		}
+	}
+
+	return response, nil
+}
+
+func (s *handlerServer) GetInboundUsers(ctx context.Context, request *GetInboundUserRequest) (*GetInboundUserResponse, error) {
+	handler, err := s.ihm.GetHandler(ctx, request.Tag)
+	if err != nil {
+		return nil, errors.New("failed to get handler: ", request.Tag).Base(err)
+	}
+	p, err := getInbound(handler)
+	if err != nil {
+		return nil, err
+	}
+	um, ok := p.(proxy.UserManager)
+	if !ok {
+		return nil, errors.New("proxy is not a UserManager")
+	}
+	if len(request.Email) > 0 {
+		return &GetInboundUserResponse{Users: []*protocol.User{protocol.ToProtoUser(um.GetUser(ctx, request.Email))}}, nil
+	}
+	result := make([]*protocol.User, 0, 100)
+	users := um.GetUsers(ctx)
+	for _, u := range users {
+		result = append(result, protocol.ToProtoUser(u))
+	}
+	return &GetInboundUserResponse{Users: result}, nil
+}
+
+func (s *handlerServer) GetInboundUsersCount(ctx context.Context, request *GetInboundUserRequest) (*GetInboundUsersCountResponse, error) {
+	handler, err := s.ihm.GetHandler(ctx, request.Tag)
+	if err != nil {
+		return nil, errors.New("failed to get handler: ", request.Tag).Base(err)
+	}
+	p, err := getInbound(handler)
+	if err != nil {
+		return nil, err
+	}
+	um, ok := p.(proxy.UserManager)
+	if !ok {
+		return nil, errors.New("proxy is not a UserManager")
+	}
+	return &GetInboundUsersCountResponse{Count: um.GetUsersCount(ctx)}, nil
+}
+
 func (s *handlerServer) AddOutbound(ctx context.Context, request *AddOutboundRequest) (*AddOutboundResponse, error) {
 	if err := core.AddOutboundHandler(s.s, request.Outbound); err != nil {
 		return nil, err
@@ -123,6 +187,23 @@ func (s *handlerServer) AlterOutbound(ctx context.Context, request *AlterOutboun
 	return &AlterOutboundResponse{}, operation.ApplyOutbound(ctx, handler)
 }
 
+func (s *handlerServer) ListOutbounds(ctx context.Context, request *ListOutboundsRequest) (*ListOutboundsResponse, error) {
+	handlers := s.ohm.ListHandlers(ctx)
+	response := &ListOutboundsResponse{}
+	for _, handler := range handlers {
+		// Ignore gRPC outbound
+		if _, ok := handler.(*commander.Outbound); ok {
+			continue
+		}
+		response.Outbounds = append(response.Outbounds, &core.OutboundHandlerConfig{
+			Tag:            handler.Tag(),
+			SenderSettings: handler.SenderSettings(),
+			ProxySettings:  handler.ProxySettings(),
+		})
+	}
+	return response, nil
+}
+
 func (s *handlerServer) mustEmbedUnimplementedHandlerServiceServer() {}
 
 type service struct {
@@ -136,7 +217,7 @@ func (s *service) Register(server *grpc.Server) {
 	common.Must(s.v.RequireFeatures(func(im inbound.Manager, om outbound.Manager) {
 		hs.ihm = im
 		hs.ohm = om
-	}))
+	}, false))
 	RegisterHandlerServiceServer(server, hs)
 
 	// For compatibility purposes

app/proxyman/command/command.proto

@@ -37,6 +37,27 @@ message AlterInboundRequest {
 
 message AlterInboundResponse {}
 
+message ListInboundsRequest {
+  bool isOnlyTags = 1;
+}
+
+message ListInboundsResponse {
+  repeated core.InboundHandlerConfig inbounds = 1;
+}
+
+message GetInboundUserRequest {
+  string tag = 1;
+  string email = 2;
+}
+
+message GetInboundUserResponse {
+  repeated xray.common.protocol.User users = 1;
+}
+
+message GetInboundUsersCountResponse {
+  int64 count = 1;
+}
+
 message AddOutboundRequest {
   core.OutboundHandlerConfig outbound = 1;
 }
@@ -56,6 +77,12 @@ message AlterOutboundRequest {
 
 message AlterOutboundResponse {}
 
+message ListOutboundsRequest {}
+
+message ListOutboundsResponse {
+  repeated core.OutboundHandlerConfig outbounds = 1;
+}
+
 service HandlerService {
   rpc AddInbound(AddInboundRequest) returns (AddInboundResponse) {}
 
@@ -63,11 +90,19 @@ service HandlerService {
 
   rpc AlterInbound(AlterInboundRequest) returns (AlterInboundResponse) {}
 
+  rpc ListInbounds(ListInboundsRequest) returns (ListInboundsResponse) {}
+
+  rpc GetInboundUsers(GetInboundUserRequest) returns (GetInboundUserResponse) {}
+
+  rpc GetInboundUsersCount(GetInboundUserRequest) returns (GetInboundUsersCountResponse) {}
+
   rpc AddOutbound(AddOutboundRequest) returns (AddOutboundResponse) {}
 
   rpc RemoveOutbound(RemoveOutboundRequest) returns (RemoveOutboundResponse) {}
 
   rpc AlterOutbound(AlterOutboundRequest) returns (AlterOutboundResponse) {}
+
+  rpc ListOutbounds(ListOutboundsRequest) returns (ListOutboundsResponse) {}
 }
 
 message Config {}

app/proxyman/command/command_grpc.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
 // versions:
-// - protoc-gen-go-grpc v1.3.0
-// - protoc             v5.27.0
+// - protoc-gen-go-grpc v1.6.0
+// - protoc             v6.33.5
 // source: app/proxyman/command/command.proto
 
 package command
@@ -15,16 +15,20 @@ import (
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the grpc package it is being compiled against.
-// Requires gRPC-Go v1.32.0 or later.
-const _ = grpc.SupportPackageIsVersion7
+// Requires gRPC-Go v1.64.0 or later.
+const _ = grpc.SupportPackageIsVersion9
 
 const (
-	HandlerService_AddInbound_FullMethodName     = "/xray.app.proxyman.command.HandlerService/AddInbound"
-	HandlerService_RemoveInbound_FullMethodName  = "/xray.app.proxyman.command.HandlerService/RemoveInbound"
-	HandlerService_AlterInbound_FullMethodName   = "/xray.app.proxyman.command.HandlerService/AlterInbound"
-	HandlerService_AddOutbound_FullMethodName    = "/xray.app.proxyman.command.HandlerService/AddOutbound"
-	HandlerService_RemoveOutbound_FullMethodName = "/xray.app.proxyman.command.HandlerService/RemoveOutbound"
-	HandlerService_AlterOutbound_FullMethodName  = "/xray.app.proxyman.command.HandlerService/AlterOutbound"
+	HandlerService_AddInbound_FullMethodName           = "/xray.app.proxyman.command.HandlerService/AddInbound"
+	HandlerService_RemoveInbound_FullMethodName        = "/xray.app.proxyman.command.HandlerService/RemoveInbound"
+	HandlerService_AlterInbound_FullMethodName         = "/xray.app.proxyman.command.HandlerService/AlterInbound"
+	HandlerService_ListInbounds_FullMethodName         = "/xray.app.proxyman.command.HandlerService/ListInbounds"
+	HandlerService_GetInboundUsers_FullMethodName      = "/xray.app.proxyman.command.HandlerService/GetInboundUsers"
+	HandlerService_GetInboundUsersCount_FullMethodName = "/xray.app.proxyman.command.HandlerService/GetInboundUsersCount"
+	HandlerService_AddOutbound_FullMethodName          = "/xray.app.proxyman.command.HandlerService/AddOutbound"
+	HandlerService_RemoveOutbound_FullMethodName       = "/xray.app.proxyman.command.HandlerService/RemoveOutbound"
+	HandlerService_AlterOutbound_FullMethodName        = "/xray.app.proxyman.command.HandlerService/AlterOutbound"
+	HandlerService_ListOutbounds_FullMethodName        = "/xray.app.proxyman.command.HandlerService/ListOutbounds"
 )
 
 // HandlerServiceClient is the client API for HandlerService service.
@@ -34,9 +38,13 @@ type HandlerServiceClient interface {
 	AddInbound(ctx context.Context, in *AddInboundRequest, opts ...grpc.CallOption) (*AddInboundResponse, error)
 	RemoveInbound(ctx context.Context, in *RemoveInboundRequest, opts ...grpc.CallOption) (*RemoveInboundResponse, error)
 	AlterInbound(ctx context.Context, in *AlterInboundRequest, opts ...grpc.CallOption) (*AlterInboundResponse, error)
+	ListInbounds(ctx context.Context, in *ListInboundsRequest, opts ...grpc.CallOption) (*ListInboundsResponse, error)
+	GetInboundUsers(ctx context.Context, in *GetInboundUserRequest, opts ...grpc.CallOption) (*GetInboundUserResponse, error)
+	GetInboundUsersCount(ctx context.Context, in *GetInboundUserRequest, opts ...grpc.CallOption) (*GetInboundUsersCountResponse, error)
 	AddOutbound(ctx context.Context, in *AddOutboundRequest, opts ...grpc.CallOption) (*AddOutboundResponse, error)
 	RemoveOutbound(ctx context.Context, in *RemoveOutboundRequest, opts ...grpc.CallOption) (*RemoveOutboundResponse, error)
 	AlterOutbound(ctx context.Context, in *AlterOutboundRequest, opts ...grpc.CallOption) (*AlterOutboundResponse, error)
+	ListOutbounds(ctx context.Context, in *ListOutboundsRequest, opts ...grpc.CallOption) (*ListOutboundsResponse, error)
 }
 
 type handlerServiceClient struct {
@@ -48,8 +56,9 @@ func NewHandlerServiceClient(cc grpc.ClientConnInterface) HandlerServiceClient {
 }
 
 func (c *handlerServiceClient) AddInbound(ctx context.Context, in *AddInboundRequest, opts ...grpc.CallOption) (*AddInboundResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	out := new(AddInboundResponse)
-	err := c.cc.Invoke(ctx, HandlerService_AddInbound_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, HandlerService_AddInbound_FullMethodName, in, out, cOpts...)
 	if err != nil {
 		return nil, err
 	}
@@ -57,8 +66,9 @@ func (c *handlerServiceClient) AddInbound(ctx context.Context, in *AddInboundReq
 }
 
 func (c *handlerServiceClient) RemoveInbound(ctx context.Context, in *RemoveInboundRequest, opts ...grpc.CallOption) (*RemoveInboundResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	out := new(RemoveInboundResponse)
-	err := c.cc.Invoke(ctx, HandlerService_RemoveInbound_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, HandlerService_RemoveInbound_FullMethodName, in, out, cOpts...)
 	if err != nil {
 		return nil, err
 	}
@@ -66,8 +76,39 @@ func (c *handlerServiceClient) RemoveInbound(ctx context.Context, in *RemoveInbo
 }
 
 func (c *handlerServiceClient) AlterInbound(ctx context.Context, in *AlterInboundRequest, opts ...grpc.CallOption) (*AlterInboundResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	out := new(AlterInboundResponse)
-	err := c.cc.Invoke(ctx, HandlerService_AlterInbound_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, HandlerService_AlterInbound_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *handlerServiceClient) ListInbounds(ctx context.Context, in *ListInboundsRequest, opts ...grpc.CallOption) (*ListInboundsResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(ListInboundsResponse)
+	err := c.cc.Invoke(ctx, HandlerService_ListInbounds_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *handlerServiceClient) GetInboundUsers(ctx context.Context, in *GetInboundUserRequest, opts ...grpc.CallOption) (*GetInboundUserResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(GetInboundUserResponse)
+	err := c.cc.Invoke(ctx, HandlerService_GetInboundUsers_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *handlerServiceClient) GetInboundUsersCount(ctx context.Context, in *GetInboundUserRequest, opts ...grpc.CallOption) (*GetInboundUsersCountResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(GetInboundUsersCountResponse)
+	err := c.cc.Invoke(ctx, HandlerService_GetInboundUsersCount_FullMethodName, in, out, cOpts...)
 	if err != nil {
 		return nil, err
 	}
@@ -75,8 +116,9 @@ func (c *handlerServiceClient) AlterInbound(ctx context.Context, in *AlterInboun
 }
 
 func (c *handlerServiceClient) AddOutbound(ctx context.Context, in *AddOutboundRequest, opts ...grpc.CallOption) (*AddOutboundResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	out := new(AddOutboundResponse)
-	err := c.cc.Invoke(ctx, HandlerService_AddOutbound_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, HandlerService_AddOutbound_FullMethodName, in, out, cOpts...)
 	if err != nil {
 		return nil, err
 	}
@@ -84,8 +126,9 @@ func (c *handlerServiceClient) AddOutbound(ctx context.Context, in *AddOutboundR
 }
 
 func (c *handlerServiceClient) RemoveOutbound(ctx context.Context, in *RemoveOutboundRequest, opts ...grpc.CallOption) (*RemoveOutboundResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	out := new(RemoveOutboundResponse)
-	err := c.cc.Invoke(ctx, HandlerService_RemoveOutbound_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, HandlerService_RemoveOutbound_FullMethodName, in, out, cOpts...)
 	if err != nil {
 		return nil, err
 	}
@@ -93,8 +136,19 @@ func (c *handlerServiceClient) RemoveOutbound(ctx context.Context, in *RemoveOut
 }
 
 func (c *handlerServiceClient) AlterOutbound(ctx context.Context, in *AlterOutboundRequest, opts ...grpc.CallOption) (*AlterOutboundResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	out := new(AlterOutboundResponse)
-	err := c.cc.Invoke(ctx, HandlerService_AlterOutbound_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, HandlerService_AlterOutbound_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *handlerServiceClient) ListOutbounds(ctx context.Context, in *ListOutboundsRequest, opts ...grpc.CallOption) (*ListOutboundsResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(ListOutboundsResponse)
+	err := c.cc.Invoke(ctx, HandlerService_ListOutbounds_FullMethodName, in, out, cOpts...)
 	if err != nil {
 		return nil, err
 	}
@@ -103,40 +157,60 @@ func (c *handlerServiceClient) AlterOutbound(ctx context.Context, in *AlterOutbo
 
 // HandlerServiceServer is the server API for HandlerService service.
 // All implementations must embed UnimplementedHandlerServiceServer
-// for forward compatibility
+// for forward compatibility.
 type HandlerServiceServer interface {
 	AddInbound(context.Context, *AddInboundRequest) (*AddInboundResponse, error)
 	RemoveInbound(context.Context, *RemoveInboundRequest) (*RemoveInboundResponse, error)
 	AlterInbound(context.Context, *AlterInboundRequest) (*AlterInboundResponse, error)
+	ListInbounds(context.Context, *ListInboundsRequest) (*ListInboundsResponse, error)
+	GetInboundUsers(context.Context, *GetInboundUserRequest) (*GetInboundUserResponse, error)
+	GetInboundUsersCount(context.Context, *GetInboundUserRequest) (*GetInboundUsersCountResponse, error)
 	AddOutbound(context.Context, *AddOutboundRequest) (*AddOutboundResponse, error)
 	RemoveOutbound(context.Context, *RemoveOutboundRequest) (*RemoveOutboundResponse, error)
 	AlterOutbound(context.Context, *AlterOutboundRequest) (*AlterOutboundResponse, error)
+	ListOutbounds(context.Context, *ListOutboundsRequest) (*ListOutboundsResponse, error)
 	mustEmbedUnimplementedHandlerServiceServer()
 }
 
-// UnimplementedHandlerServiceServer must be embedded to have forward compatible implementations.
-type UnimplementedHandlerServiceServer struct {
-}
+// UnimplementedHandlerServiceServer must be embedded to have
+// forward compatible implementations.
+//
+// NOTE: this should be embedded by value instead of pointer to avoid a nil
+// pointer dereference when methods are called.
+type UnimplementedHandlerServiceServer struct{}
 
 func (UnimplementedHandlerServiceServer) AddInbound(context.Context, *AddInboundRequest) (*AddInboundResponse, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method AddInbound not implemented")
+	return nil, status.Error(codes.Unimplemented, "method AddInbound not implemented")
 }
 func (UnimplementedHandlerServiceServer) RemoveInbound(context.Context, *RemoveInboundRequest) (*RemoveInboundResponse, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method RemoveInbound not implemented")
+	return nil, status.Error(codes.Unimplemented, "method RemoveInbound not implemented")
 }
 func (UnimplementedHandlerServiceServer) AlterInbound(context.Context, *AlterInboundRequest) (*AlterInboundResponse, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method AlterInbound not implemented")
+	return nil, status.Error(codes.Unimplemented, "method AlterInbound not implemented")
+}
+func (UnimplementedHandlerServiceServer) ListInbounds(context.Context, *ListInboundsRequest) (*ListInboundsResponse, error) {
+	return nil, status.Error(codes.Unimplemented, "method ListInbounds not implemented")
+}
+func (UnimplementedHandlerServiceServer) GetInboundUsers(context.Context, *GetInboundUserRequest) (*GetInboundUserResponse, error) {
+	return nil, status.Error(codes.Unimplemented, "method GetInboundUsers not implemented")
+}
+func (UnimplementedHandlerServiceServer) GetInboundUsersCount(context.Context, *GetInboundUserRequest) (*GetInboundUsersCountResponse, error) {
+	return nil, status.Error(codes.Unimplemented, "method GetInboundUsersCount not implemented")
 }
 func (UnimplementedHandlerServiceServer) AddOutbound(context.Context, *AddOutboundRequest) (*AddOutboundResponse, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method AddOutbound not implemented")
+	return nil, status.Error(codes.Unimplemented, "method AddOutbound not implemented")
 }
 func (UnimplementedHandlerServiceServer) RemoveOutbound(context.Context, *RemoveOutboundRequest) (*RemoveOutboundResponse, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method RemoveOutbound not implemented")
+	return nil, status.Error(codes.Unimplemented, "method RemoveOutbound not implemented")
 }
 func (UnimplementedHandlerServiceServer) AlterOutbound(context.Context, *AlterOutboundRequest) (*AlterOutboundResponse, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method AlterOutbound not implemented")
+	return nil, status.Error(codes.Unimplemented, "method AlterOutbound not implemented")
+}
+func (UnimplementedHandlerServiceServer) ListOutbounds(context.Context, *ListOutboundsRequest) (*ListOutboundsResponse, error) {
+	return nil, status.Error(codes.Unimplemented, "method ListOutbounds not implemented")
 }
 func (UnimplementedHandlerServiceServer) mustEmbedUnimplementedHandlerServiceServer() {}
+func (UnimplementedHandlerServiceServer) testEmbeddedByValue()                        {}
 
 // UnsafeHandlerServiceServer may be embedded to opt out of forward compatibility for this service.
 // Use of this interface is not recommended, as added methods to HandlerServiceServer will
@@ -146,6 +220,13 @@ type UnsafeHandlerServiceServer interface {
 }
 
 func RegisterHandlerServiceServer(s grpc.ServiceRegistrar, srv HandlerServiceServer) {
+	// If the following call panics, it indicates UnimplementedHandlerServiceServer was
+	// embedded by pointer and is nil.  This will cause panics if an
+	// unimplemented method is ever invoked, so we test this at initialization
+	// time to prevent it from happening at runtime later due to I/O.
+	if t, ok := srv.(interface{ testEmbeddedByValue() }); ok {
+		t.testEmbeddedByValue()
+	}
 	s.RegisterService(&HandlerService_ServiceDesc, srv)
 }
 
@@ -203,6 +284,60 @@ func _HandlerService_AlterInbound_Handler(srv interface{}, ctx context.Context,
 	return interceptor(ctx, in, info, handler)
 }
 
+func _HandlerService_ListInbounds_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(ListInboundsRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(HandlerServiceServer).ListInbounds(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: HandlerService_ListInbounds_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(HandlerServiceServer).ListInbounds(ctx, req.(*ListInboundsRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _HandlerService_GetInboundUsers_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(GetInboundUserRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(HandlerServiceServer).GetInboundUsers(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: HandlerService_GetInboundUsers_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(HandlerServiceServer).GetInboundUsers(ctx, req.(*GetInboundUserRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _HandlerService_GetInboundUsersCount_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(GetInboundUserRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(HandlerServiceServer).GetInboundUsersCount(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: HandlerService_GetInboundUsersCount_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(HandlerServiceServer).GetInboundUsersCount(ctx, req.(*GetInboundUserRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 func _HandlerService_AddOutbound_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(AddOutboundRequest)
 	if err := dec(in); err != nil {
@@ -257,6 +392,24 @@ func _HandlerService_AlterOutbound_Handler(srv interface{}, ctx context.Context,
 	return interceptor(ctx, in, info, handler)
 }
 
+func _HandlerService_ListOutbounds_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(ListOutboundsRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(HandlerServiceServer).ListOutbounds(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: HandlerService_ListOutbounds_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(HandlerServiceServer).ListOutbounds(ctx, req.(*ListOutboundsRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 // HandlerService_ServiceDesc is the grpc.ServiceDesc for HandlerService service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -276,6 +429,18 @@ var HandlerService_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "AlterInbound",
 			Handler:    _HandlerService_AlterInbound_Handler,
 		},
+		{
+			MethodName: "ListInbounds",
+			Handler:    _HandlerService_ListInbounds_Handler,
+		},
+		{
+			MethodName: "GetInboundUsers",
+			Handler:    _HandlerService_GetInboundUsers_Handler,
+		},
+		{
+			MethodName: "GetInboundUsersCount",
+			Handler:    _HandlerService_GetInboundUsersCount_Handler,
+		},
 		{
 			MethodName: "AddOutbound",
 			Handler:    _HandlerService_AddOutbound_Handler,
@@ -288,6 +453,10 @@ var HandlerService_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "AlterOutbound",
 			Handler:    _HandlerService_AlterOutbound_Handler,
 		},
+		{
+			MethodName: "ListOutbounds",
+			Handler:    _HandlerService_ListOutbounds_Handler,
+		},
 	},
 	Streams:  []grpc.StreamDesc{},
 	Metadata: "app/proxyman/command/command.proto",

app/proxyman/command/doc.go

@@ -1,3 +1 @@
 package command
-
-//go:generate go run github.com/xtls/xray-core/common/errors/errorgen

app/proxyman/config.go

@@ -1,39 +1,34 @@
 package proxyman
 
-func (s *AllocationStrategy) GetConcurrencyValue() uint32 {
-	if s == nil || s.Concurrency == nil {
-		return 3
-	}
-	return s.Concurrency.Value
-}
+import (
+	"github.com/xtls/xray-core/common/geodata"
+	"github.com/xtls/xray-core/common/session"
+)
 
-func (s *AllocationStrategy) GetRefreshValue() uint32 {
-	if s == nil || s.Refresh == nil {
-		return 5
-	}
-	return s.Refresh.Value
-}
-
-func (c *ReceiverConfig) GetEffectiveSniffingSettings() *SniffingConfig {
-	if c.SniffingSettings != nil {
-		return c.SniffingSettings
+func BuildSniffingRequest(config *SniffingConfig) (session.SniffingRequest, error) {
+	if config == nil {
+		return session.SniffingRequest{}, nil
 	}
 
-	if len(c.DomainOverride) > 0 {
-		var p []string
-		for _, kd := range c.DomainOverride {
-			switch kd {
-			case KnownProtocols_HTTP:
-				p = append(p, "http")
-			case KnownProtocols_TLS:
-				p = append(p, "tls")
-			}
-		}
-		return &SniffingConfig{
-			Enabled:             true,
-			DestinationOverride: p,
+	request := session.SniffingRequest{
+		Enabled:                        config.Enabled,
+		OverrideDestinationForProtocol: config.DestinationOverride,
+		MetadataOnly:                   config.MetadataOnly,
+		RouteOnly:                      config.RouteOnly,
+	}
+	if len(config.DomainsExcluded) > 0 {
+		excludeForDomain, err := geodata.DomainReg.BuildDomainMatcher(config.DomainsExcluded)
+		if err != nil {
+			return session.SniffingRequest{}, err
 		}
+		request.ExcludeForDomain = excludeForDomain
 	}
-
-	return nil
+	if len(config.IpsExcluded) > 0 {
+		excludeForIP, err := geodata.IPReg.BuildIPMatcher(config.IpsExcluded)
+		if err != nil {
+			return session.SniffingRequest{}, err
+		}
+		request.ExcludeForIP = excludeForIP
+	}
+	return request, nil
 }

app/proxyman/config.proto

@@ -10,41 +10,10 @@ import "common/net/address.proto";
 import "common/net/port.proto";
 import "transport/internet/config.proto";
 import "common/serial/typed_message.proto";
+import "common/geodata/geodat.proto";
 
 message InboundConfig {}
 
-message AllocationStrategy {
-  enum Type {
-    // Always allocate all connection handlers.
-    Always = 0;
-
-    // Randomly allocate specific range of handlers.
-    Random = 1;
-
-    // External. Not supported yet.
-    External = 2;
-  }
-
-  Type type = 1;
-
-  message AllocationStrategyConcurrency { uint32 value = 1; }
-
-  // Number of handlers (ports) running in parallel.
-  // Default value is 3 if unset.
-  AllocationStrategyConcurrency concurrency = 2;
-
-  message AllocationStrategyRefresh { uint32 value = 1; }
-
-  // Number of minutes before a handler is regenerated.
-  // Default value is 5 if unset.
-  AllocationStrategyRefresh refresh = 3;
-}
-
-enum KnownProtocols {
-  HTTP = 0;
-  TLS = 1;
-}
-
 message SniffingConfig {
   // Whether or not to enable content sniffing on an inbound connection.
   bool enabled = 1;
@@ -52,7 +21,10 @@ message SniffingConfig {
   // Override target destination if sniff'ed protocol is in the given list.
   // Supported values are "http", "tls", "fakedns".
   repeated string destination_override = 2;
-  repeated string domains_excluded = 3;
+
+  repeated xray.common.geodata.DomainRule domains_excluded = 3;
+
+  repeated xray.common.geodata.IPRule ips_excluded = 6;
 
   // Whether should only try to sniff metadata without waiting for client input.
   // Can be used to support SMTP like protocol where server send the first
@@ -67,14 +39,10 @@ message ReceiverConfig {
   xray.common.net.PortList port_list = 1;
   // Listen specifies the IP address that the Receiver should listen on.
   xray.common.net.IPOrDomain listen = 2;
-  AllocationStrategy allocation_strategy = 3;
-  xray.transport.internet.StreamConfig stream_settings = 4;
-  bool receive_original_destination = 5;
-  reserved 6;
-  // Override domains for the given protocol.
-  // Deprecated. Use sniffing_settings.
-  repeated KnownProtocols domain_override = 7 [ deprecated = true ];
-  SniffingConfig sniffing_settings = 8;
+  xray.transport.internet.StreamConfig stream_settings = 3;
+  bool receive_original_destination = 4;
+  reserved 5;
+  SniffingConfig sniffing_settings = 6;
 }
 
 message InboundHandlerConfig {
@@ -92,6 +60,7 @@ message SenderConfig {
   xray.transport.internet.ProxyConfig proxy_settings = 3;
   MultiplexingConfig multiplex_settings = 4;
   string via_cidr = 5;
+  xray.transport.internet.DomainStrategy target_strategy = 6;
 }
 
 message MultiplexingConfig {

app/proxyman/inbound/always.go

@@ -5,15 +5,17 @@ import (
 
 	"github.com/xtls/xray-core/app/proxyman"
 	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/common/dice"
 	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/mux"
 	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/common/serial"
+	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/policy"
 	"github.com/xtls/xray-core/features/stats"
 	"github.com/xtls/xray-core/proxy"
 	"github.com/xtls/xray-core/transport/internet"
+	"google.golang.org/protobuf/proto"
 )
 
 func getStatCounter(v *core.Instance, tag string) (stats.Counter, stats.Counter) {
@@ -24,7 +26,7 @@ func getStatCounter(v *core.Instance, tag string) (stats.Counter, stats.Counter)
 	if len(tag) > 0 && policy.ForSystem().Stats.InboundUplink {
 		statsManager := v.GetFeature(stats.ManagerType()).(stats.Manager)
 		name := "inbound>>>" + tag + ">>>traffic>>>uplink"
-		c, _ := stats.GetOrRegisterCounter(statsManager, name)
+		c, _ := statsManager.GetOrRegisterCounter(name)
 		if c != nil {
 			uplinkCounter = c
 		}
@@ -32,7 +34,7 @@ func getStatCounter(v *core.Instance, tag string) (stats.Counter, stats.Counter)
 	if len(tag) > 0 && policy.ForSystem().Stats.InboundDownlink {
 		statsManager := v.GetFeature(stats.ManagerType()).(stats.Manager)
 		name := "inbound>>>" + tag + ">>>traffic>>>downlink"
-		c, _ := stats.GetOrRegisterCounter(statsManager, name)
+		c, _ := statsManager.GetOrRegisterCounter(name)
 		if c != nil {
 			downlinkCounter = c
 		}
@@ -42,14 +44,36 @@ func getStatCounter(v *core.Instance, tag string) (stats.Counter, stats.Counter)
 }
 
 type AlwaysOnInboundHandler struct {
-	proxy   proxy.Inbound
-	workers []worker
-	mux     *mux.Server
-	tag     string
+	proxyConfig    interface{}
+	receiverConfig *proxyman.ReceiverConfig
+	proxy          proxy.Inbound
+	workers        []worker
+	mux            *mux.Server
+	tag            string
 }
 
 func NewAlwaysOnInboundHandler(ctx context.Context, tag string, receiverConfig *proxyman.ReceiverConfig, proxyConfig interface{}) (*AlwaysOnInboundHandler, error) {
-	rawProxy, err := common.CreateObject(ctx, proxyConfig)
+	sniffingRequest, err := proxyman.BuildSniffingRequest(receiverConfig.SniffingSettings)
+	if err != nil {
+		return nil, err
+	}
+	src := net.TCPDestination(net.AnyIP, 0)
+	if receiverConfig.Listen != nil {
+		src.Address = receiverConfig.Listen.AsAddress()
+	}
+	if receiverConfig.PortList != nil && len(receiverConfig.PortList.Range) > 0 {
+		src.Port = net.Port(receiverConfig.PortList.Range[0].From)
+	}
+	mss, err := internet.ToMemoryStreamConfig(receiverConfig.StreamSettings)
+	if err != nil {
+		return nil, errors.New("failed to parse stream config").Base(err).AtWarning()
+	}
+
+	newCtx := session.ContextWithInbound(ctx, &session.Inbound{Tag: tag, Source: src})
+	newCtx = session.ContextWithContent(newCtx, &session.Content{SniffingRequest: sniffingRequest})
+	newCtx = session.ContextWithStreamSettings(newCtx, mss)
+
+	rawProxy, err := common.CreateObject(newCtx, proxyConfig)
 	if err != nil {
 		return nil, err
 	}
@@ -59,9 +83,11 @@ func NewAlwaysOnInboundHandler(ctx context.Context, tag string, receiverConfig *
 	}
 
 	h := &AlwaysOnInboundHandler{
-		proxy: p,
-		mux:   mux.NewServer(ctx),
-		tag:   tag,
+		receiverConfig: receiverConfig,
+		proxyConfig:    proxyConfig,
+		proxy:          p,
+		mux:            mux.NewServer(ctx),
+		tag:            tag,
 	}
 
 	uplinkCounter, downlinkCounter := getStatCounter(core.MustFromContext(ctx), tag)
@@ -73,11 +99,6 @@ func NewAlwaysOnInboundHandler(ctx context.Context, tag string, receiverConfig *
 		address = net.AnyIP
 	}
 
-	mss, err := internet.ToMemoryStreamConfig(receiverConfig.StreamSettings)
-	if err != nil {
-		return nil, errors.New("failed to parse stream config").Base(err).AtWarning()
-	}
-
 	if receiverConfig.ReceiveOriginalDestination {
 		if mss.SocketSettings == nil {
 			mss.SocketSettings = &internet.SocketConfig{}
@@ -97,7 +118,7 @@ func NewAlwaysOnInboundHandler(ctx context.Context, tag string, receiverConfig *
 				stream:          mss,
 				tag:             tag,
 				dispatcher:      h.mux,
-				sniffingConfig:  receiverConfig.GetEffectiveSniffingSettings(),
+				sniffingRequest: sniffingRequest,
 				uplinkCounter:   uplinkCounter,
 				downlinkCounter: downlinkCounter,
 				ctx:             ctx,
@@ -119,7 +140,7 @@ func NewAlwaysOnInboundHandler(ctx context.Context, tag string, receiverConfig *
 						recvOrigDest:    receiverConfig.ReceiveOriginalDestination,
 						tag:             tag,
 						dispatcher:      h.mux,
-						sniffingConfig:  receiverConfig.GetEffectiveSniffingSettings(),
+						sniffingRequest: sniffingRequest,
 						uplinkCounter:   uplinkCounter,
 						downlinkCounter: downlinkCounter,
 						ctx:             ctx,
@@ -134,7 +155,7 @@ func NewAlwaysOnInboundHandler(ctx context.Context, tag string, receiverConfig *
 						address:         address,
 						port:            net.Port(port),
 						dispatcher:      h.mux,
-						sniffingConfig:  receiverConfig.GetEffectiveSniffingSettings(),
+						sniffingRequest: sniffingRequest,
 						uplinkCounter:   uplinkCounter,
 						downlinkCounter: downlinkCounter,
 						stream:          mss,
@@ -151,6 +172,12 @@ func NewAlwaysOnInboundHandler(ctx context.Context, tag string, receiverConfig *
 
 // Start implements common.Runnable.
 func (h *AlwaysOnInboundHandler) Start() error {
+	// for inbound without worker (TUN)
+	if run, ok := h.proxy.(common.Runnable); ok {
+		if err := run.Start(); err != nil {
+			return errors.New("failed to start proxy").Base(err)
+		}
+	}
 	for _, worker := range h.workers {
 		if err := worker.Start(); err != nil {
 			return err
@@ -166,20 +193,13 @@ func (h *AlwaysOnInboundHandler) Close() error {
 		errs = append(errs, worker.Close())
 	}
 	errs = append(errs, h.mux.Close())
+	errs = append(errs, common.Close(h.proxy))
 	if err := errors.Combine(errs...); err != nil {
 		return errors.New("failed to close all resources").Base(err)
 	}
 	return nil
 }
 
-func (h *AlwaysOnInboundHandler) GetRandomInboundProxy() (interface{}, net.Port, int) {
-	if len(h.workers) == 0 {
-		return nil, 0, 0
-	}
-	w := h.workers[dice.Roll(len(h.workers))]
-	return w.Proxy(), w.Port(), 9999
-}
-
 func (h *AlwaysOnInboundHandler) Tag() string {
 	return h.tag
 }
@@ -187,3 +207,16 @@ func (h *AlwaysOnInboundHandler) Tag() string {
 func (h *AlwaysOnInboundHandler) GetInbound() proxy.Inbound {
 	return h.proxy
 }
+
+// ReceiverSettings implements inbound.Handler.
+func (h *AlwaysOnInboundHandler) ReceiverSettings() *serial.TypedMessage {
+	return serial.ToTypedMessage(h.receiverConfig)
+}
+
+// ProxySettings implements inbound.Handler.
+func (h *AlwaysOnInboundHandler) ProxySettings() *serial.TypedMessage {
+	if v, ok := h.proxyConfig.(proto.Message); ok {
+		return serial.ToTypedMessage(v)
+	}
+	return nil
+}

app/proxyman/inbound/dynamic.go

@@ -1,207 +0,0 @@
-package inbound
-
-import (
-	"context"
-	"sync"
-	"time"
-
-	"github.com/xtls/xray-core/app/proxyman"
-	"github.com/xtls/xray-core/common/dice"
-	"github.com/xtls/xray-core/common/errors"
-	"github.com/xtls/xray-core/common/mux"
-	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/common/task"
-	"github.com/xtls/xray-core/core"
-	"github.com/xtls/xray-core/proxy"
-	"github.com/xtls/xray-core/transport/internet"
-)
-
-type DynamicInboundHandler struct {
-	tag            string
-	v              *core.Instance
-	proxyConfig    interface{}
-	receiverConfig *proxyman.ReceiverConfig
-	streamSettings *internet.MemoryStreamConfig
-	portMutex      sync.Mutex
-	portsInUse     map[net.Port]bool
-	workerMutex    sync.RWMutex
-	worker         []worker
-	lastRefresh    time.Time
-	mux            *mux.Server
-	task           *task.Periodic
-
-	ctx context.Context
-}
-
-func NewDynamicInboundHandler(ctx context.Context, tag string, receiverConfig *proxyman.ReceiverConfig, proxyConfig interface{}) (*DynamicInboundHandler, error) {
-	v := core.MustFromContext(ctx)
-	h := &DynamicInboundHandler{
-		tag:            tag,
-		proxyConfig:    proxyConfig,
-		receiverConfig: receiverConfig,
-		portsInUse:     make(map[net.Port]bool),
-		mux:            mux.NewServer(ctx),
-		v:              v,
-		ctx:            ctx,
-	}
-
-	mss, err := internet.ToMemoryStreamConfig(receiverConfig.StreamSettings)
-	if err != nil {
-		return nil, errors.New("failed to parse stream settings").Base(err).AtWarning()
-	}
-	if receiverConfig.ReceiveOriginalDestination {
-		if mss.SocketSettings == nil {
-			mss.SocketSettings = &internet.SocketConfig{}
-		}
-		if mss.SocketSettings.Tproxy == internet.SocketConfig_Off {
-			mss.SocketSettings.Tproxy = internet.SocketConfig_Redirect
-		}
-		mss.SocketSettings.ReceiveOriginalDestAddress = true
-	}
-
-	h.streamSettings = mss
-
-	h.task = &task.Periodic{
-		Interval: time.Minute * time.Duration(h.receiverConfig.AllocationStrategy.GetRefreshValue()),
-		Execute:  h.refresh,
-	}
-
-	return h, nil
-}
-
-func (h *DynamicInboundHandler) allocatePort() net.Port {
-	allPorts := []int32{}
-	for _, pr := range h.receiverConfig.PortList.Range {
-		for i := pr.From; i <= pr.To; i++ {
-			allPorts = append(allPorts, int32(i))
-		}
-	}
-	h.portMutex.Lock()
-	defer h.portMutex.Unlock()
-
-	for {
-		r := dice.Roll(len(allPorts))
-		port := net.Port(allPorts[r])
-		_, used := h.portsInUse[port]
-		if !used {
-			h.portsInUse[port] = true
-			return port
-		}
-	}
-}
-
-func (h *DynamicInboundHandler) closeWorkers(workers []worker) {
-	ports2Del := make([]net.Port, len(workers))
-	for idx, worker := range workers {
-		ports2Del[idx] = worker.Port()
-		if err := worker.Close(); err != nil {
-			errors.LogInfoInner(h.ctx, err, "failed to close worker")
-		}
-	}
-
-	h.portMutex.Lock()
-	for _, port := range ports2Del {
-		delete(h.portsInUse, port)
-	}
-	h.portMutex.Unlock()
-}
-
-func (h *DynamicInboundHandler) refresh() error {
-	h.lastRefresh = time.Now()
-
-	timeout := time.Minute * time.Duration(h.receiverConfig.AllocationStrategy.GetRefreshValue()) * 2
-	concurrency := h.receiverConfig.AllocationStrategy.GetConcurrencyValue()
-	workers := make([]worker, 0, concurrency)
-
-	address := h.receiverConfig.Listen.AsAddress()
-	if address == nil {
-		address = net.AnyIP
-	}
-
-	uplinkCounter, downlinkCounter := getStatCounter(h.v, h.tag)
-
-	for i := uint32(0); i < concurrency; i++ {
-		port := h.allocatePort()
-		rawProxy, err := core.CreateObject(h.v, h.proxyConfig)
-		if err != nil {
-			errors.LogWarningInner(h.ctx, err, "failed to create proxy instance")
-			continue
-		}
-		p := rawProxy.(proxy.Inbound)
-		nl := p.Network()
-		if net.HasNetwork(nl, net.Network_TCP) {
-			worker := &tcpWorker{
-				tag:             h.tag,
-				address:         address,
-				port:            port,
-				proxy:           p,
-				stream:          h.streamSettings,
-				recvOrigDest:    h.receiverConfig.ReceiveOriginalDestination,
-				dispatcher:      h.mux,
-				sniffingConfig:  h.receiverConfig.GetEffectiveSniffingSettings(),
-				uplinkCounter:   uplinkCounter,
-				downlinkCounter: downlinkCounter,
-				ctx:             h.ctx,
-			}
-			if err := worker.Start(); err != nil {
-				errors.LogWarningInner(h.ctx, err, "failed to create TCP worker")
-				continue
-			}
-			workers = append(workers, worker)
-		}
-
-		if net.HasNetwork(nl, net.Network_UDP) {
-			worker := &udpWorker{
-				tag:             h.tag,
-				proxy:           p,
-				address:         address,
-				port:            port,
-				dispatcher:      h.mux,
-				sniffingConfig:  h.receiverConfig.GetEffectiveSniffingSettings(),
-				uplinkCounter:   uplinkCounter,
-				downlinkCounter: downlinkCounter,
-				stream:          h.streamSettings,
-				ctx:             h.ctx,
-			}
-			if err := worker.Start(); err != nil {
-				errors.LogWarningInner(h.ctx, err, "failed to create UDP worker")
-				continue
-			}
-			workers = append(workers, worker)
-		}
-	}
-
-	h.workerMutex.Lock()
-	h.worker = workers
-	h.workerMutex.Unlock()
-
-	time.AfterFunc(timeout, func() {
-		h.closeWorkers(workers)
-	})
-
-	return nil
-}
-
-func (h *DynamicInboundHandler) Start() error {
-	return h.task.Start()
-}
-
-func (h *DynamicInboundHandler) Close() error {
-	return h.task.Close()
-}
-
-func (h *DynamicInboundHandler) GetRandomInboundProxy() (interface{}, net.Port, int) {
-	h.workerMutex.RLock()
-	defer h.workerMutex.RUnlock()
-
-	if len(h.worker) == 0 {
-		return nil, 0, 0
-	}
-	w := h.worker[dice.Roll(len(h.worker))]
-	expire := h.receiverConfig.AllocationStrategy.GetRefreshValue() - uint32(time.Since(h.lastRefresh)/time.Minute)
-	return w.Proxy(), w.Port(), int(expire)
-}
-
-func (h *DynamicInboundHandler) Tag() string {
-	return h.tag
-}

app/proxyman/inbound/inbound.go

@@ -1,7 +1,5 @@
 package inbound
 
-//go:generate go run github.com/xtls/xray-core/common/errors/errorgen
-
 import (
 	"context"
 	"sync"
@@ -9,18 +7,19 @@ import (
 	"github.com/xtls/xray-core/app/proxyman"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/inbound"
 )
 
-// Manager is to manage all inbound handlers.
+// Manager manages all inbound handlers.
 type Manager struct {
-	access          sync.RWMutex
-	untaggedHandler []inbound.Handler
-	taggedHandlers  map[string]inbound.Handler
-	running         bool
+	access           sync.RWMutex
+	untaggedHandlers []inbound.Handler
+	taggedHandlers   map[string]inbound.Handler
+	running          bool
 }
 
 // New returns a new Manager for inbound handlers.
@@ -48,7 +47,7 @@ func (m *Manager) AddHandler(ctx context.Context, handler inbound.Handler) error
 		}
 		m.taggedHandlers[tag] = handler
 	} else {
-		m.untaggedHandler = append(m.untaggedHandler, handler)
+		m.untaggedHandlers = append(m.untaggedHandlers, handler)
 	}
 
 	if m.running {
@@ -90,6 +89,21 @@ func (m *Manager) RemoveHandler(ctx context.Context, tag string) error {
 	return common.ErrNoClue
 }
 
+// ListHandlers implements inbound.Manager.
+func (m *Manager) ListHandlers(ctx context.Context) []inbound.Handler {
+	m.access.RLock()
+	defer m.access.RUnlock()
+
+	response := make([]inbound.Handler, len(m.untaggedHandlers))
+	copy(response, m.untaggedHandlers)
+
+	for _, v := range m.taggedHandlers {
+		response = append(response, v)
+	}
+
+	return response
+}
+
 // Start implements common.Runnable.
 func (m *Manager) Start() error {
 	m.access.Lock()
@@ -103,7 +117,7 @@ func (m *Manager) Start() error {
 		}
 	}
 
-	for _, handler := range m.untaggedHandler {
+	for _, handler := range m.untaggedHandlers {
 		if err := handler.Start(); err != nil {
 			return err
 		}
@@ -124,7 +138,7 @@ func (m *Manager) Close() error {
 			errs = append(errs, err)
 		}
 	}
-	for _, handler := range m.untaggedHandler {
+	for _, handler := range m.untaggedHandlers {
 		if err := handler.Close(); err != nil {
 			errs = append(errs, err)
 		}
@@ -160,16 +174,11 @@ func NewHandler(ctx context.Context, config *core.InboundHandlerConfig) (inbound
 			Mark: streamSettings.SocketSettings.Mark,
 		})
 	}
-
-	allocStrategy := receiverSettings.AllocationStrategy
-	if allocStrategy == nil || allocStrategy.Type == proxyman.AllocationStrategy_Always {
-		return NewAlwaysOnInboundHandler(ctx, tag, receiverSettings, proxySettings)
+	if streamSettings != nil && streamSettings.ProtocolName == "splithttp" {
+		ctx = session.ContextWithAllowedNetwork(ctx, net.Network_UDP)
 	}
 
-	if allocStrategy.Type == proxyman.AllocationStrategy_Random {
-		return NewDynamicInboundHandler(ctx, tag, receiverSettings, proxySettings)
-	}
-	return nil, errors.New("unknown allocation strategy: ", receiverSettings.AllocationStrategy.Type).AtError()
+	return NewAlwaysOnInboundHandler(ctx, tag, receiverSettings, proxySettings)
 }
 
 func init() {

app/proxyman/inbound/worker.go

@@ -6,7 +6,6 @@ import (
 	"sync/atomic"
 	"time"
 
-	"github.com/xtls/xray-core/app/proxyman"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
 	c "github.com/xtls/xray-core/common/ctx"
@@ -19,7 +18,9 @@ import (
 	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/features/stats"
 	"github.com/xtls/xray-core/proxy"
+	hysteria_proxy "github.com/xtls/xray-core/proxy/hysteria"
 	"github.com/xtls/xray-core/transport/internet"
+	"github.com/xtls/xray-core/transport/internet/hysteria"
 	"github.com/xtls/xray-core/transport/internet/stat"
 	"github.com/xtls/xray-core/transport/internet/tcp"
 	"github.com/xtls/xray-core/transport/internet/udp"
@@ -41,7 +42,7 @@ type tcpWorker struct {
 	recvOrigDest    bool
 	tag             string
 	dispatcher      routing.Dispatcher
-	sniffingConfig  *proxyman.SniffingConfig
+	sniffingRequest session.SniffingRequest
 	uplinkCounter   stats.Counter
 	downlinkCounter stats.Counter
 
@@ -76,7 +77,25 @@ func (w *tcpWorker) callback(conn stat.Connection) {
 		case internet.SocketConfig_TProxy:
 			dest = net.DestinationFromAddr(conn.LocalAddr())
 		}
+
 		if dest.IsValid() {
+			// Check if try to connect to this inbound itself (can cause loopback)
+			var isLoopBack bool
+			if w.address == net.AnyIP || w.address == net.AnyIPv6 {
+				if dest.Port.Value() == w.port.Value() && IsLocal(dest.Address.IP()) {
+					isLoopBack = true
+				}
+			} else {
+				if w.hub.Addr().String() == dest.NetAddr() {
+					isLoopBack = true
+				}
+			}
+			if isLoopBack {
+				cancel()
+				conn.Close()
+				errors.LogError(ctx, errors.New("loopback connection detected"))
+				return
+			}
 			outbounds[0].Target = dest
 		}
 	}
@@ -91,19 +110,14 @@ func (w *tcpWorker) callback(conn stat.Connection) {
 	}
 	ctx = session.ContextWithInbound(ctx, &session.Inbound{
 		Source:  net.DestinationFromAddr(conn.RemoteAddr()),
+		Local:   net.DestinationFromAddr(conn.LocalAddr()),
 		Gateway: net.TCPDestination(w.address, w.port),
 		Tag:     w.tag,
 		Conn:    conn,
 	})
 
 	content := new(session.Content)
-	if w.sniffingConfig != nil {
-		content.SniffingRequest.Enabled = w.sniffingConfig.Enabled
-		content.SniffingRequest.OverrideDestinationForProtocol = w.sniffingConfig.DestinationOverride
-		content.SniffingRequest.ExcludeForDomain = w.sniffingConfig.DomainsExcluded
-		content.SniffingRequest.MetadataOnly = w.sniffingConfig.MetadataOnly
-		content.SniffingRequest.RouteOnly = w.sniffingConfig.RouteOnly
-	}
+	content.SniffingRequest = w.sniffingRequest
 	ctx = session.ContextWithContent(ctx, content)
 
 	if err := w.proxy.Process(ctx, net.Network_TCP, conn, w.dispatcher); err != nil {
@@ -119,6 +133,11 @@ func (w *tcpWorker) Proxy() proxy.Inbound {
 
 func (w *tcpWorker) Start() error {
 	ctx := context.Background()
+
+	if v, ok := w.proxy.(*hysteria_proxy.Server); ok {
+		ctx = hysteria.ContextWithValidator(ctx, v.HysteriaInboundValidator())
+	}
+
 	hub, err := internet.ListenTCP(ctx, w.address, w.port, w.stream, func(conn stat.Connection) {
 		go w.callback(conn)
 	})
@@ -161,6 +180,7 @@ type udpConn struct {
 	uplink           stats.Counter
 	downlink         stats.Counter
 	inactive         bool
+	cancel           context.CancelFunc
 }
 
 func (c *udpConn) setInactive() {
@@ -203,6 +223,9 @@ func (c *udpConn) Write(buf []byte) (int, error) {
 }
 
 func (c *udpConn) Close() error {
+	if c.cancel != nil {
+		c.cancel()
+	}
 	common.Must(c.done.Close())
 	common.Must(common.Close(c.writer))
 	return nil
@@ -243,7 +266,7 @@ type udpWorker struct {
 	tag             string
 	stream          *internet.MemoryStreamConfig
 	dispatcher      routing.Dispatcher
-	sniffingConfig  *proxyman.SniffingConfig
+	sniffingRequest session.SniffingRequest
 	uplinkCounter   stats.Counter
 	downlinkCounter stats.Counter
 
@@ -259,6 +282,7 @@ func (w *udpWorker) getConnection(id connID) (*udpConn, bool) {
 	defer w.Unlock()
 
 	if conn, found := w.activeConn[id]; found && !conn.done.Done() {
+		conn.updateActivity()
 		return conn, true
 	}
 
@@ -306,7 +330,8 @@ func (w *udpWorker) callback(b *buf.Buffer, source net.Destination, originalDest
 		common.Must(w.checker.Start())
 
 		go func() {
-			ctx := w.ctx
+			ctx, cancel := context.WithCancel(w.ctx)
+			conn.cancel = cancel
 			sid := session.NewID()
 			ctx = c.ContextWithID(ctx, sid)
 
@@ -315,18 +340,23 @@ func (w *udpWorker) callback(b *buf.Buffer, source net.Destination, originalDest
 				outbounds[0].Target = originalDest
 			}
 			ctx = session.ContextWithOutbounds(ctx, outbounds)
+			local := net.DestinationFromAddr(w.hub.Addr())
+			if local.Address == net.AnyIP || local.Address == net.AnyIPv6 {
+				if source.Address.Family().IsIPv4() {
+					local.Address = net.AnyIP
+				} else if source.Address.Family().IsIPv6() {
+					local.Address = net.AnyIPv6
+				}
+			}
+
 			ctx = session.ContextWithInbound(ctx, &session.Inbound{
 				Source:  source,
+				Local:   local, // Due to some limitations, in UDP connections, localIP is always equal to listen interface IP
 				Gateway: net.UDPDestination(w.address, w.port),
 				Tag:     w.tag,
 			})
 			content := new(session.Content)
-			if w.sniffingConfig != nil {
-				content.SniffingRequest.Enabled = w.sniffingConfig.Enabled
-				content.SniffingRequest.OverrideDestinationForProtocol = w.sniffingConfig.DestinationOverride
-				content.SniffingRequest.MetadataOnly = w.sniffingConfig.MetadataOnly
-				content.SniffingRequest.RouteOnly = w.sniffingConfig.RouteOnly
-			}
+			content.SniffingRequest = w.sniffingRequest
 			ctx = session.ContextWithContent(ctx, content)
 			if err := w.proxy.Process(ctx, net.Network_UDP, conn, w.dispatcher); err != nil {
 				errors.LogInfoInner(ctx, err, "connection ends")
@@ -442,7 +472,7 @@ type dsWorker struct {
 	stream          *internet.MemoryStreamConfig
 	tag             string
 	dispatcher      routing.Dispatcher
-	sniffingConfig  *proxyman.SniffingConfig
+	sniffingRequest session.SniffingRequest
 	uplinkCounter   stats.Counter
 	downlinkCounter stats.Counter
 
@@ -465,19 +495,14 @@ func (w *dsWorker) callback(conn stat.Connection) {
 	}
 	ctx = session.ContextWithInbound(ctx, &session.Inbound{
 		Source:  net.DestinationFromAddr(conn.RemoteAddr()),
+		Local:   net.DestinationFromAddr(conn.LocalAddr()),
 		Gateway: net.UnixDestination(w.address),
 		Tag:     w.tag,
 		Conn:    conn,
 	})
 
 	content := new(session.Content)
-	if w.sniffingConfig != nil {
-		content.SniffingRequest.Enabled = w.sniffingConfig.Enabled
-		content.SniffingRequest.OverrideDestinationForProtocol = w.sniffingConfig.DestinationOverride
-		content.SniffingRequest.ExcludeForDomain = w.sniffingConfig.DomainsExcluded
-		content.SniffingRequest.MetadataOnly = w.sniffingConfig.MetadataOnly
-		content.SniffingRequest.RouteOnly = w.sniffingConfig.RouteOnly
-	}
+	content.SniffingRequest = w.sniffingRequest
 	ctx = session.ContextWithContent(ctx, content)
 
 	if err := w.proxy.Process(ctx, net.Network_UNIX, conn, w.dispatcher); err != nil {
@@ -525,3 +550,18 @@ func (w *dsWorker) Close() error {
 
 	return nil
 }
+
+func IsLocal(ip net.IP) bool {
+	addrs, err := net.InterfaceAddrs()
+	if err != nil {
+		return false
+	}
+	for _, addr := range addrs {
+		if ipnet, ok := addr.(*net.IPNet); ok {
+			if ipnet.IP.Equal(ip) {
+				return true
+			}
+		}
+	}
+	return false
+}

app/proxyman/outbound/handler.go

@@ -6,16 +6,17 @@ import (
 	goerrors "errors"
 	"io"
 	"math/big"
-	gonet "net"
-	"os"
+
+	"github.com/xtls/xray-core/common/dice"
 
 	"github.com/xtls/xray-core/app/proxyman"
 	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/buf"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/mux"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/net/cnc"
+	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/outbound"
@@ -27,6 +28,7 @@ import (
 	"github.com/xtls/xray-core/transport/internet/stat"
 	"github.com/xtls/xray-core/transport/internet/tls"
 	"github.com/xtls/xray-core/transport/pipe"
+	"google.golang.org/protobuf/proto"
 )
 
 func getStatCounter(v *core.Instance, tag string) (stats.Counter, stats.Counter) {
@@ -37,7 +39,7 @@ func getStatCounter(v *core.Instance, tag string) (stats.Counter, stats.Counter)
 	if len(tag) > 0 && policy.ForSystem().Stats.OutboundUplink {
 		statsManager := v.GetFeature(stats.ManagerType()).(stats.Manager)
 		name := "outbound>>>" + tag + ">>>traffic>>>uplink"
-		c, _ := stats.GetOrRegisterCounter(statsManager, name)
+		c, _ := statsManager.GetOrRegisterCounter(name)
 		if c != nil {
 			uplinkCounter = c
 		}
@@ -45,7 +47,7 @@ func getStatCounter(v *core.Instance, tag string) (stats.Counter, stats.Counter)
 	if len(tag) > 0 && policy.ForSystem().Stats.OutboundDownlink {
 		statsManager := v.GetFeature(stats.ManagerType()).(stats.Manager)
 		name := "outbound>>>" + tag + ">>>traffic>>>downlink"
-		c, _ := stats.GetOrRegisterCounter(statsManager, name)
+		c, _ := statsManager.GetOrRegisterCounter(name)
 		if c != nil {
 			downlinkCounter = c
 		}
@@ -54,11 +56,12 @@ func getStatCounter(v *core.Instance, tag string) (stats.Counter, stats.Counter)
 	return uplinkCounter, downlinkCounter
 }
 
-// Handler is an implements of outbound.Handler.
+// Handler implements outbound.Handler.
 type Handler struct {
 	tag             string
 	senderSettings  *proxyman.SenderConfig
 	streamSettings  *internet.MemoryStreamConfig
+	proxyConfig     proto.Message
 	proxy           proxy.Outbound
 	outboundManager outbound.Manager
 	mux             *mux.ClientManager
@@ -101,8 +104,13 @@ func NewHandler(ctx context.Context, config *core.OutboundHandlerConfig) (outbou
 	if err != nil {
 		return nil, err
 	}
+	h.proxyConfig = proxyConfig
 
-	rawProxyHandler, err := common.CreateObject(ctx, proxyConfig)
+	ctx = session.ContextWithFullHandler(ctx, h)
+
+	newCtx := session.ContextWithStreamSettings(ctx, h.streamSettings)
+
+	rawProxyHandler, err := common.CreateObject(newCtx, proxyConfig)
 	if err != nil {
 		return nil, err
 	}
@@ -173,6 +181,29 @@ func (h *Handler) Tag() string {
 func (h *Handler) Dispatch(ctx context.Context, link *transport.Link) {
 	outbounds := session.OutboundsFromContext(ctx)
 	ob := outbounds[len(outbounds)-1]
+	content := session.ContentFromContext(ctx)
+	if h.senderSettings != nil && h.senderSettings.TargetStrategy.HasStrategy() && ob.Target.Address.Family().IsDomain() && (content == nil || !content.SkipDNSResolve) {
+		strategy := h.senderSettings.TargetStrategy
+		if ob.Target.Network == net.Network_UDP && ob.OriginalTarget.Address != nil {
+			strategy = strategy.GetDynamicStrategy(ob.OriginalTarget.Address.Family())
+		}
+		ips, err := internet.LookupForIP(ob.Target.Address.Domain(), strategy, nil)
+		if err != nil {
+			errors.LogInfoInner(ctx, err, "failed to resolve ip for target ", ob.Target.Address.Domain())
+			if h.senderSettings.TargetStrategy.ForceIP() {
+				err := errors.New("failed to resolve ip for target ", ob.Target.Address.Domain()).Base(err)
+				session.SubmitOutboundErrorToOriginator(ctx, err)
+				common.Interrupt(link.Writer)
+				common.Interrupt(link.Reader)
+				return
+			}
+
+		} else {
+			unchangedDomain := ob.Target.Address.Domain()
+			ob.Target.Address = net.IPAddress(ips[dice.Roll(len(ips))])
+			errors.LogInfo(ctx, "target: ", unchangedDomain, " resolved to: ", ob.Target.Address.String())
+		}
+	}
 	if ob.Target.Network == net.Network_UDP && ob.OriginalTarget.Address != nil && ob.OriginalTarget.Address != ob.Target.Address {
 		link.Reader = &buf.EndpointOverrideReader{Reader: link.Reader, Dest: ob.Target.Address, OriginalDest: ob.OriginalTarget.Address}
 		link.Writer = &buf.EndpointOverrideWriter{Writer: link.Writer, Dest: ob.Target.Address, OriginalDest: ob.OriginalTarget.Address}
@@ -184,6 +215,7 @@ func (h *Handler) Dispatch(ctx context.Context, link *transport.Link) {
 				session.SubmitOutboundErrorToOriginator(ctx, err)
 				errors.LogInfo(ctx, err.Error())
 				common.Interrupt(link.Writer)
+				common.Interrupt(link.Reader)
 			}
 		}
 		if ob.Target.Network == net.Network_UDP && ob.Target.Port == 443 {
@@ -209,8 +241,10 @@ func (h *Handler) Dispatch(ctx context.Context, link *transport.Link) {
 	}
 out:
 	err := h.proxy.Process(ctx, link, h)
+	var errC error
 	if err != nil {
-		if goerrors.Is(err, io.EOF) || goerrors.Is(err, io.ErrClosedPipe) || goerrors.Is(err, context.Canceled) {
+		errC = errors.Cause(err)
+		if goerrors.Is(errC, io.EOF) || goerrors.Is(errC, io.ErrClosedPipe) || goerrors.Is(errC, context.Canceled) {
 			err = nil
 		}
 	}
@@ -221,19 +255,15 @@ out:
 		errors.LogInfo(ctx, err.Error())
 		common.Interrupt(link.Writer)
 	} else {
-		common.Close(link.Writer)
+		if errC != nil && goerrors.Is(errC, io.ErrClosedPipe) {
+			common.Interrupt(link.Writer)
+		} else {
+			common.Close(link.Writer)
+		}
 	}
 	common.Interrupt(link.Reader)
 }
 
-// Address implements internet.Dialer.
-func (h *Handler) Address() net.Address {
-	if h.senderSettings == nil || h.senderSettings.Via == nil {
-		return nil
-	}
-	return h.senderSettings.Via.AsAddress()
-}
-
 func (h *Handler) DestIpAddress() net.IP {
 	return internet.DestIpAddress()
 }
@@ -241,7 +271,9 @@ func (h *Handler) DestIpAddress() net.IP {
 // Dial implements internet.Dialer.
 func (h *Handler) Dial(ctx context.Context, dest net.Destination) (stat.Connection, error) {
 	if h.senderSettings != nil {
+
 		if h.senderSettings.ProxySettings.HasTag() {
+
 			tag := h.senderSettings.ProxySettings.Tag
 			handler := h.outboundManager.GetHandler(tag)
 			if handler != nil {
@@ -266,32 +298,61 @@ func (h *Handler) Dial(ctx context.Context, dest net.Destination) (stat.Connecti
 				return h.getStatCouterConnection(conn), nil
 			}
 
-			errors.LogWarning(ctx, "failed to get outbound handler with tag: ", tag)
+			errors.LogError(ctx, "failed to get outbound handler with tag: ", tag)
+			return nil, errors.New("failed to get outbound handler with tag: " + tag)
 		}
 
 		if h.senderSettings.Via != nil {
 			outbounds := session.OutboundsFromContext(ctx)
 			ob := outbounds[len(outbounds)-1]
-			if h.senderSettings.ViaCidr == "" {
-				ob.Gateway = h.senderSettings.Via.AsAddress()
-			} else { //Get a random address.
-				ob.Gateway = ParseRandomIPv6(h.senderSettings.Via.AsAddress(), h.senderSettings.ViaCidr)
-			}
+			h.SetOutboundGateway(ctx, ob)
 		}
 	}
 
-	if conn, err := h.getUoTConnection(ctx, dest); err != os.ErrInvalid {
-		return conn, err
-	}
-
 	conn, err := internet.Dial(ctx, dest, h.streamSettings)
 	conn = h.getStatCouterConnection(conn)
 	outbounds := session.OutboundsFromContext(ctx)
-	ob := outbounds[len(outbounds)-1]
-	ob.Conn = conn
+	if outbounds != nil {
+		ob := outbounds[len(outbounds)-1]
+		ob.Conn = conn
+	} else {
+		// for Vision's pre-connect
+	}
 	return conn, err
 }
 
+func (h *Handler) SetOutboundGateway(ctx context.Context, ob *session.Outbound) {
+	if ob.Gateway == nil && h.senderSettings != nil && h.senderSettings.Via != nil && !h.senderSettings.ProxySettings.HasTag() && (h.streamSettings.SocketSettings == nil || len(h.streamSettings.SocketSettings.DialerProxy) == 0) {
+		var domain string
+		addr := h.senderSettings.Via.AsAddress()
+		domain = h.senderSettings.Via.GetDomain()
+		switch {
+		case h.senderSettings.ViaCidr != "":
+			ob.Gateway = ParseRandomIP(addr, h.senderSettings.ViaCidr)
+
+		case domain == "origin":
+			if inbound := session.InboundFromContext(ctx); inbound != nil {
+				if inbound.Local.IsValid() && inbound.Local.Address.Family().IsIP() {
+					ob.Gateway = inbound.Local.Address
+					errors.LogDebug(ctx, "use inbound local ip as sendthrough: ", inbound.Local.Address.String())
+				}
+			}
+		case domain == "srcip":
+			if inbound := session.InboundFromContext(ctx); inbound != nil {
+				if inbound.Source.IsValid() && inbound.Source.Address.Family().IsIP() {
+					ob.Gateway = inbound.Source.Address
+					errors.LogDebug(ctx, "use inbound source ip as sendthrough: ", inbound.Source.Address.String())
+				}
+			}
+		// case addr.Family().IsDomain():
+		default:
+			ob.Gateway = addr
+
+		}
+
+	}
+}
+
 func (h *Handler) getStatCouterConnection(conn stat.Connection) stat.Connection {
 	if h.uplinkCounter != nil || h.downlinkCounter != nil {
 		return &stat.CounterConnection{
@@ -316,23 +377,34 @@ func (h *Handler) Start() error {
 // Close implements common.Closable.
 func (h *Handler) Close() error {
 	common.Close(h.mux)
+	common.Close(h.proxy)
 	return nil
 }
 
-func ParseRandomIPv6(address net.Address, prefix string) net.Address {
-	_, network, _ := gonet.ParseCIDR(address.IP().String() + "/" + prefix)
-
-	maskSize, totalBits := network.Mask.Size()
-	subnetSize := big.NewInt(1).Lsh(big.NewInt(1), uint(totalBits-maskSize))
-
-	// random
-	randomBigInt, _ := rand.Int(rand.Reader, subnetSize)
-
-	startIPBigInt := big.NewInt(0).SetBytes(network.IP.To16())
-	randomIPBigInt := big.NewInt(0).Add(startIPBigInt, randomBigInt)
-
-	randomIPBytes := randomIPBigInt.Bytes()
-	randomIPBytes = append(make([]byte, 16-len(randomIPBytes)), randomIPBytes...)
-
-	return net.ParseAddress(gonet.IP(randomIPBytes).String())
+// SenderSettings implements outbound.Handler.
+func (h *Handler) SenderSettings() *serial.TypedMessage {
+	return serial.ToTypedMessage(h.senderSettings)
+}
+
+// ProxySettings implements outbound.Handler.
+func (h *Handler) ProxySettings() *serial.TypedMessage {
+	return serial.ToTypedMessage(h.proxyConfig)
+}
+
+func ParseRandomIP(addr net.Address, prefix string) net.Address {
+	_, ipnet, _ := net.ParseCIDR(addr.IP().String() + "/" + prefix)
+
+	ones, bits := ipnet.Mask.Size()
+	subnetSize := new(big.Int).Lsh(big.NewInt(1), uint(bits-ones))
+
+	rnd, _ := rand.Int(rand.Reader, subnetSize)
+
+	startInt := new(big.Int).SetBytes(ipnet.IP)
+	rndInt := new(big.Int).Add(startInt, rnd)
+
+	rndBytes := rndInt.Bytes()
+	padded := make([]byte, len(ipnet.IP))
+	copy(padded[len(padded)-len(rndBytes):], rndBytes)
+
+	return net.ParseAddress(net.IP(padded).String())
 }