Xray-core v26.6.27

Sponsor & Donation & NFTs: https://github.com/XTLS/Xray-core/issues/3668
Project X Channel: https://t.me/projectXtls

Announcement of NFTs by Project X: https://github.com/XTLS/Xray-core/discussions/3633
Project X NFT: https://opensea.io/assets/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/1

VLESS Post-Quantum Encryption: https://github.com/XTLS/Xray-core/pull/5067
VLESS NFT: https://opensea.io/collection/vless

XHTTP: Beyond REALITY: https://github.com/XTLS/Xray-core/discussions/4113
REALITY NFT: https://opensea.io/assets/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/2

.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

@@ -32,9 +32,12 @@ 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_transport.json
-RUN echo '{}' >/tmp/usr/local/etc/xray/08_stats.json
-RUN echo '{}' >/tmp/usr/local/etc/xray/09_reverse.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/99_version.json
 
 # Create log files
 RUN mkdir -p /tmp/var/log/xray && touch \
@@ -45,8 +48,8 @@ RUN mkdir -p /tmp/var/log/xray && touch \
 FROM gcr.io/distroless/static:nonroot
 
 COPY --from=build --chown=0:0 --chmod=755 /src/xray /usr/local/bin/xray
-COPY --from=build --chown=0:0 --chmod=755 /tmp/empty /usr/local/share/xray
-COPY --from=build --chown=0:0 --chmod=644 /tmp/geodat/*.dat /usr/local/share/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

.github/docker/Dockerfile.usa

@@ -32,9 +32,12 @@ 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_transport.json
-RUN echo '{}' >/tmp/usr/local/etc/xray/08_stats.json
-RUN echo '{}' >/tmp/usr/local/etc/xray/09_reverse.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/99_version.json
 
 # Create log files
 RUN mkdir -p /tmp/var/log/xray && touch \
@@ -54,8 +57,8 @@ RUN mkdir -p /tmp/var/log/xray && touch \
 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=0:0 --chmod=755 /tmp/empty /usr/local/share/xray
-COPY --from=build --chown=0:0 --chmod=644 /tmp/geodat/*.dat /usr/local/share/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

.github/workflows/docker.yml

@@ -65,7 +65,7 @@ jobs:
           echo "LATEST=$LATEST" >>${GITHUB_ENV}
 
       - name: Checkout code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v4

.github/workflows/release-win7.yml

@@ -11,15 +11,16 @@ on:
 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@v5
+        uses: actions/cache/restore@v6
         with:
           path: resources
           key: xray-geodat-
 
       - name: Restore Wintun Cache
-        uses: actions/cache/restore@v5
+        uses: actions/cache/restore@v6
         with:
           path: resources
           key: xray-wintun-
@@ -75,13 +76,14 @@ 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 }}
       CGO_ENABLED: 0
     steps:
       - name: Checkout codebase
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Show workflow information
         run: |
@@ -117,13 +119,13 @@ jobs:
           # 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@v5
+        uses: actions/cache/restore@v6
         with:
           path: resources
           key: xray-geodat-
 
       - name: Restore Wintun Cache
-        uses: actions/cache/restore@v5
+        uses: actions/cache/restore@v6
         with:
           path: resources
           key: xray-wintun-
@@ -132,15 +134,17 @@ jobs:
         run: |
           mv -f resources/geo* build_assets/
           if [[ ${GOOS} == 'windows' ]]; then
-            echo 'CreateObject("Wscript.Shell").Run "xray.exe -config config.json",0' > build_assets/xray_no_window.vbs
-            echo 'Start-Process -FilePath ".\xray.exe" -ArgumentList "-config .\config.json" -WindowStyle Hidden' > build_assets/xray_no_window.ps1
+            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.txt
+            mv resources/wintun/LICENSE.txt build_assets/LICENSE-Wintun
           fi
 
       - name: Copy README.md & LICENSE

.github/workflows/release.yml

@@ -11,15 +11,16 @@ on:
 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@v5
+        uses: actions/cache/restore@v6
         with:
           path: resources
           key: xray-geodat-
 
       - name: Restore Wintun Cache
-        uses: actions/cache/restore@v5
+        uses: actions/cache/restore@v6
         with:
           path: resources
           key: xray-wintun-
@@ -161,6 +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 }}
@@ -168,7 +170,7 @@ jobs:
       CGO_ENABLED: 0
     steps:
       - name: Checkout codebase
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Set up NDK
         if: matrix.goos == 'android'
@@ -208,6 +210,9 @@ jobs:
             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
@@ -220,14 +225,14 @@ jobs:
           fi
 
       - name: Restore Geodat Cache
-        uses: actions/cache/restore@v5
+        uses: actions/cache/restore@v6
         with:
           path: resources
           key: xray-geodat-
 
       - name: Restore Wintun Cache
         if: matrix.goos == 'windows'
-        uses: actions/cache/restore@v5
+        uses: actions/cache/restore@v6
         with:
           path: resources
           key: xray-wintun-
@@ -236,8 +241,10 @@ jobs:
         run: |
           mv -f resources/geo* build_assets/
           if [[ ${GOOS} == 'windows' ]]; then
-            echo 'CreateObject("Wscript.Shell").Run "xray.exe -config config.json",0' > build_assets/xray_no_window.vbs
-            echo 'Start-Process -FilePath ".\xray.exe" -ArgumentList "-config .\config.json" -WindowStyle Hidden' > build_assets/xray_no_window.ps1
+            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
@@ -247,7 +254,7 @@ jobs:
             if [[ ${GOARCH} == 'arm64' ]]; then
               mv resources/wintun/bin/arm64/wintun.dll build_assets/
             fi
-            mv resources/wintun/LICENSE.txt build_assets/LICENSE-wintun.txt
+            mv resources/wintun/LICENSE.txt build_assets/LICENSE-Wintun
           fi
 
       - name: Copy README.md & LICENSE

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

@@ -26,7 +26,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Restore Geodat Cache
-        uses: actions/cache/restore@v5
+        uses: actions/cache/restore@v6
         with:
           path: resources
           key: xray-geodat-
@@ -59,7 +59,7 @@ jobs:
             done
 
       - name: Save Geodat Cache
-        uses: actions/cache/save@v5
+        uses: actions/cache/save@v6
         if: ${{ steps.update.outputs.unhit }}
         with:
           path: resources
@@ -68,9 +68,12 @@ jobs:
   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@v5
+        uses: actions/cache/restore@v6
         with:
           path: resources
           key: xray-wintun-
@@ -96,7 +99,6 @@ jobs:
               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"
-                  continue
               else
                   echo -e "wintun.dll for ${ARCHITECTURE} is missing"
                   missing=true
@@ -113,16 +115,21 @@ jobs:
             fi
             if [[ "$missing" == true ]]; then
               FILENAME=wintun.zip
-              DOWNLOAD_FILE=wintun-0.14.1.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}"
-              echo -e "Unpacking wintun..."
-              unzip -u ${FILENAME} -d resources/
-              echo "unhit=true" >> $GITHUB_OUTPUT
+              if [[ "$(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@v5
+        uses: actions/cache/save@v6
         if: ${{ steps.update.outputs.unhit }}
         with:
           path: resources

.github/workflows/test.yml

@@ -1,4 +1,4 @@
-name: Test
+name: Tests and Checkings
 
 on:
   push:
@@ -8,9 +8,10 @@ on:
 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@v5
+        uses: actions/cache/restore@v6
         with:
           path: resources
           key: xray-geodat-
@@ -36,9 +37,10 @@ jobs:
 
   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@v6
+        uses: actions/checkout@v7
       - name: Check Proto Version Header
         run: |
           head -n 4 core/config.pb.go > ref.txt
@@ -50,8 +52,28 @@ jobs:
             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@v6
+        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 }}
@@ -61,14 +83,14 @@ jobs:
         os: [windows-latest, ubuntu-latest, macos-latest]
     steps:
       - name: Checkout codebase
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
       - name: Set up Go
         uses: actions/setup-go@v6
         with:
           go-version-file: go.mod
           check-latest: true
       - name: Restore Geodat Cache
-        uses: actions/cache/restore@v5
+        uses: actions/cache/restore@v6
         with:
           path: resources
           key: xray-geodat-

README.md

@@ -73,8 +73,7 @@
   - [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
-  - [NetProxy-Magisk](https://github.com/Fanju6/NetProxy-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`
@@ -111,6 +110,8 @@
   - [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)
   - [X-flutter](https://github.com/XTLS/X-flutter)
@@ -118,7 +119,8 @@
   - [SimpleXray](https://github.com/lhear/SimpleXray)
   - [XrayFA](https://github.com/Q7DF1/XrayFA)
   - [AnyPortal](https://github.com/AnyPortal/AnyPortal)
-  - [NetProxy-Magisk](https://github.com/Fanju6/NetProxy-Magisk)
+  - [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)
@@ -143,10 +145,14 @@
   - [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 & 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)
@@ -159,6 +165,7 @@
   - [xtls-sdk](https://github.com/remnawave/xtls-sdk)
   - [xtlsapi](https://github.com/hiddify/xtlsapi)
   - [AndroidLibXrayLite](https://github.com/2dust/AndroidLibXrayLite)
+  - [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)
@@ -180,6 +187,27 @@
 - [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).
 
+### 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)
@@ -203,6 +231,13 @@ Make sure that you are using the same Go version, and remember to set the git co
 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

app/commander/commander.go

@@ -3,6 +3,7 @@ package commander
 import (
 	"context"
 	"net"
+	"strings"
 	"sync"
 
 	"github.com/xtls/xray-core/common"
@@ -10,6 +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"
 )
 
@@ -67,20 +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/dns/cache_controller.go

@@ -139,7 +139,8 @@ func (c *CacheController) writeAndShrink(expiredKeys []string) {
 
 	if lenAfter == 0 {
 		if c.highWatermark >= minSizeForEmptyRebuild {
-			errors.LogDebug(context.Background(), c.name,
+			errors.LogDebug(
+				context.Background(), c.name,
 				" rebuilding empty cache map to reclaim memory.",
 				" size_before_cleanup=", lenBefore,
 				" peak_size_before_rebuild=", c.highWatermark,
@@ -153,7 +154,8 @@ func (c *CacheController) writeAndShrink(expiredKeys []string) {
 
 	if reductionFromPeak := c.highWatermark - lenAfter; reductionFromPeak > shrinkAbsoluteThreshold &&
 		float64(reductionFromPeak) > float64(c.highWatermark)*shrinkRatioThreshold {
-		errors.LogDebug(context.Background(), c.name,
+		errors.LogDebug(
+			context.Background(), c.name,
 			" shrinking cache map to reclaim memory.",
 			" new_size=", lenAfter,
 			" peak_size_before_shrink=", c.highWatermark,
@@ -165,7 +167,6 @@ func (c *CacheController) writeAndShrink(expiredKeys []string) {
 		c.highWatermark = lenAfter
 		go c.migrate()
 	}
-
 }
 
 type migrationEntry struct {

app/dns/dns.go

@@ -5,18 +5,16 @@ import (
 	"context"
 	go_errors "errors"
 	"fmt"
-	"os"
-	"runtime"
 	"sort"
 	"strings"
 	"sync"
-	"time"
 
 	"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/utils"
 	"github.com/xtls/xray-core/features/dns"
 )
 
@@ -88,7 +86,7 @@ func New(ctx context.Context, config *Config) (*DNS, error) {
 		return nil, errors.New("failed to create hosts").Base(err)
 	}
 
-	var defaultTag = config.Tag
+	defaultTag := config.Tag
 	if len(config.Tag) == 0 {
 		defaultTag = generateRandomTag()
 	}
@@ -141,7 +139,7 @@ func New(ctx context.Context, config *Config) (*DNS, error) {
 			serveExpiredTTL = *ns.ServeExpiredTTL
 		}
 
-		var tag = defaultTag
+		tag := defaultTag
 		if len(ns.Tag) > 0 {
 			tag = ns.Tag
 		}
@@ -158,9 +156,12 @@ func New(ctx context.Context, config *Config) (*DNS, error) {
 		clients = append(clients, client)
 	}
 
-	domainMatcher, err := geodata.DomainReg.BuildDomainMatcher(effectiveRules)
-	if err != nil {
-		return nil, err
+	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
@@ -220,7 +221,7 @@ func (s *DNS) LookupIP(domain string, option dns.IPOption) ([]net.IP, uint32, er
 	}
 
 	if s.checkSystem {
-		supportIPv4, supportIPv6 := checkRoutes()
+		supportIPv4, supportIPv6 := utils.CheckRoutes()
 		option.IPv4Enable = option.IPv4Enable && supportIPv4
 		option.IPv6Enable = option.IPv6Enable && supportIPv6
 	} else {
@@ -271,25 +272,27 @@ func (s *DNS) sortClients(domain string) []*Client {
 
 	// Priority domain matching
 	hasMatch := false
-	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
+	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
+			}
 		}
 	}
 
@@ -534,67 +537,3 @@ func init() {
 		return New(ctx, config.(*Config))
 	}))
 }
-
-func probeRoutes() (ipv4 bool, ipv6 bool) {
-	if conn, err := net.Dial("udp4", "192.33.4.12:53"); err == nil {
-		ipv4 = true
-		conn.Close()
-	}
-	if conn, err := net.Dial("udp6", "[2001:500:2::c]:53"); err == nil {
-		ipv6 = true
-		conn.Close()
-	}
-	return
-}
-
-var routeCache struct {
-	sync.Once
-	sync.RWMutex
-	expire     time.Time
-	ipv4, ipv6 bool
-}
-
-func checkRoutes() (bool, bool) {
-	if !isGUIPlatform {
-		routeCache.Once.Do(func() {
-			routeCache.ipv4, routeCache.ipv6 = probeRoutes()
-		})
-		return routeCache.ipv4, routeCache.ipv6
-	}
-
-	routeCache.RWMutex.RLock()
-	now := time.Now()
-	if routeCache.expire.After(now) {
-		routeCache.RWMutex.RUnlock()
-		return routeCache.ipv4, routeCache.ipv6
-	}
-	routeCache.RWMutex.RUnlock()
-
-	routeCache.RWMutex.Lock()
-	defer routeCache.RWMutex.Unlock()
-
-	now = time.Now()
-	if routeCache.expire.After(now) { // double-check
-		return routeCache.ipv4, routeCache.ipv6
-	}
-	routeCache.ipv4, routeCache.ipv6 = probeRoutes()    // ~2ms
-	routeCache.expire = now.Add(100 * time.Millisecond) // ttl
-	return routeCache.ipv4, routeCache.ipv6
-}
-
-var isGUIPlatform = detectGUIPlatform()
-
-func detectGUIPlatform() bool {
-	switch runtime.GOOS {
-	case "android", "ios", "windows", "darwin":
-		return true
-	case "linux", "freebsd", "openbsd":
-		if t := os.Getenv("XDG_SESSION_TYPE"); t == "wayland" || t == "x11" {
-			return true
-		}
-		if os.Getenv("DISPLAY") != "" || os.Getenv("WAYLAND_DISPLAY") != "" {
-			return true
-		}
-	}
-	return false
-}

app/dns/dns_test.go

@@ -148,7 +148,7 @@ func TestUDPServerSubnet(t *testing.T) {
 		Outbound: []*core.OutboundHandlerConfig{
 			{
 				ProxySettings: serial.ToTypedMessage(&freedom.Config{
-					IpsBlocked: &freedom.IPRules{},
+					FinalRules: []*freedom.FinalRuleConfig{{Action: freedom.RuleAction_Allow}},
 				}),
 			},
 		},
@@ -210,7 +210,7 @@ func TestUDPServer(t *testing.T) {
 		Outbound: []*core.OutboundHandlerConfig{
 			{
 				ProxySettings: serial.ToTypedMessage(&freedom.Config{
-					IpsBlocked: &freedom.IPRules{},
+					FinalRules: []*freedom.FinalRuleConfig{{Action: freedom.RuleAction_Allow}},
 				}),
 			},
 		},
@@ -350,7 +350,7 @@ func TestPrioritizedDomain(t *testing.T) {
 		Outbound: []*core.OutboundHandlerConfig{
 			{
 				ProxySettings: serial.ToTypedMessage(&freedom.Config{
-					IpsBlocked: &freedom.IPRules{},
+					FinalRules: []*freedom.FinalRuleConfig{{Action: freedom.RuleAction_Allow}},
 				}),
 			},
 		},
@@ -421,7 +421,7 @@ func TestUDPServerIPv6(t *testing.T) {
 		Outbound: []*core.OutboundHandlerConfig{
 			{
 				ProxySettings: serial.ToTypedMessage(&freedom.Config{
-					IpsBlocked: &freedom.IPRules{},
+					FinalRules: []*freedom.FinalRuleConfig{{Action: freedom.RuleAction_Allow}},
 				}),
 			},
 		},
@@ -490,7 +490,7 @@ func TestStaticHostDomain(t *testing.T) {
 		Outbound: []*core.OutboundHandlerConfig{
 			{
 				ProxySettings: serial.ToTypedMessage(&freedom.Config{
-					IpsBlocked: &freedom.IPRules{},
+					FinalRules: []*freedom.FinalRuleConfig{{Action: freedom.RuleAction_Allow}},
 				}),
 			},
 		},
@@ -577,7 +577,7 @@ func TestIPMatch(t *testing.T) {
 		Outbound: []*core.OutboundHandlerConfig{
 			{
 				ProxySettings: serial.ToTypedMessage(&freedom.Config{
-					IpsBlocked: &freedom.IPRules{},
+					FinalRules: []*freedom.FinalRuleConfig{{Action: freedom.RuleAction_Allow}},
 				}),
 			},
 		},
@@ -696,7 +696,7 @@ func TestLocalDomain(t *testing.T) {
 		Outbound: []*core.OutboundHandlerConfig{
 			{
 				ProxySettings: serial.ToTypedMessage(&freedom.Config{
-					IpsBlocked: &freedom.IPRules{},
+					FinalRules: []*freedom.FinalRuleConfig{{Action: freedom.RuleAction_Allow}},
 				}),
 			},
 		},
@@ -953,7 +953,7 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
 		Outbound: []*core.OutboundHandlerConfig{
 			{
 				ProxySettings: serial.ToTypedMessage(&freedom.Config{
-					IpsBlocked: &freedom.IPRules{},
+					FinalRules: []*freedom.FinalRuleConfig{{Action: freedom.RuleAction_Allow}},
 				}),
 			},
 		},

app/dns/dnscommon.go

@@ -127,15 +127,20 @@ func genEDNS0Options(clientIP net.IP, padding int) *dnsmessage.Resource {
 	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,
 	}
@@ -175,7 +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
@@ -193,9 +198,14 @@ func parseResponse(payload []byte) (*IPRecord, error) {
 	ipRecord := &IPRecord{
 		ReqID:     h.ID,
 		RCode:     h.RCode,
-		Expire:    now.Add(time.Second * dns_feature.DefaultTTL),
 		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 {
@@ -212,7 +222,7 @@ L:
 			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
 		}
 

app/dns/dnscommon_test.go

@@ -2,6 +2,7 @@ package dns
 
 import (
 	"math/rand"
+	"strings"
 	"testing"
 	"time"
 
@@ -24,7 +25,8 @@ func Test_parseResponse(t *testing.T) {
 
 	ans = new(dns.Msg)
 	ans.Id = 1
-	ans.Answer = append(ans.Answer,
+	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")),
@@ -34,7 +36,8 @@ func Test_parseResponse(t *testing.T) {
 
 	ans = new(dns.Msg)
 	ans.Id = 2
-	ans.Answer = append(ans.Answer,
+	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")),
@@ -131,10 +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)
 			}
 		})

app/dns/fakedns/fake.go

@@ -17,7 +17,7 @@ import (
 type Holder struct {
 	domainToIP cache.Lru
 	ipRange    *net.IPNet
-	mu         *sync.Mutex
+	mu         sync.Mutex
 
 	config *FakeDnsPool
 }
@@ -49,9 +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
 }
 
@@ -70,7 +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 {
@@ -92,7 +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
 }
 
@@ -103,7 +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 {
@@ -202,12 +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 {
@@ -222,7 +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_test.go

@@ -129,15 +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)
 

app/dns/hosts.go

@@ -13,8 +13,8 @@ import (
 
 // StaticHosts represents static domain-ip mapping in DNS server.
 type StaticHosts struct {
-	reps    [][]net.Address
-	matcher geodata.DomainMatcher
+	responses [][]net.Address
+	matcher   geodata.DomainMatcher
 }
 
 // NewStaticHosts creates a new StaticHosts instance.
@@ -45,21 +45,21 @@ func NewStaticHosts(hosts []*Config_HostMapping) (*StaticHosts, error) {
 				rep = append(rep, addr)
 			}
 		}
-		// if len(rep) == 0 {
-		// 	errors.LogError(context.Background(), "empty value in static hosts, ignore this rule: ", mapping.Domain)
-		// 	continue
-		// }
 		reps = append(reps, rep)
 		rules = append(rules, mapping.Domain)
 	}
 
+	if len(rules) == 0 {
+		return &StaticHosts{}, nil
+	}
+
 	matcher, err := geodata.DomainReg.BuildDomainMatcher(rules)
 	if err != nil {
 		return nil, err
 	}
 	return &StaticHosts{
-		reps:    reps,
-		matcher: matcher,
+		responses: reps,
+		matcher:   matcher,
 	}, nil
 }
 
@@ -76,8 +76,8 @@ func filterIP(ips []net.Address, option dns.IPOption) []net.Address {
 func (h *StaticHosts) lookupInternal(domain string) ([]net.Address, error) {
 	ips := make([]net.Address, 0)
 	found := false
-	for _, ruleIdx := range h.matcher.Match(domain) {
-		for _, rep := range h.reps[ruleIdx] {
+	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
@@ -85,7 +85,7 @@ func (h *StaticHosts) lookupInternal(domain string) ([]net.Address, error) {
 				return nil, err
 			}
 		}
-		ips = append(ips, h.reps[ruleIdx]...)
+		ips = append(ips, h.responses[idx]...)
 		found = true
 	}
 	if !found {
@@ -122,5 +122,8 @@ func (h *StaticHosts) lookup(domain string, option dns.IPOption, maxDepth int) (
 
 // 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, error) {
+	if h.matcher == nil {
+		return nil, nil
+	}
 	return h.lookup(domain, option, 5)
 }

app/dns/nameserver.go

@@ -10,6 +10,7 @@ import (
 	"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/utils"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/dns"
 	"github.com/xtls/xray-core/features/routing"
@@ -134,7 +135,7 @@ func NewClient(
 			}
 		}
 
-		var timeoutMs = 4000 * time.Millisecond
+		timeoutMs := 4000 * time.Millisecond
 		if ns.TimeoutMs > 0 {
 			timeoutMs = time.Duration(ns.TimeoutMs) * time.Millisecond
 		}
@@ -166,7 +167,7 @@ func (c *Client) Name() string {
 // 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) ([]net.IP, uint32, error) {
 	if c.checkSystem {
-		supportIPv4, supportIPv6 := checkRoutes()
+		supportIPv4, supportIPv6 := utils.CheckRoutes()
 		option.IPv4Enable = option.IPv4Enable && supportIPv4
 		option.IPv6Enable = option.IPv6Enable && supportIPv6
 	} else {

app/dns/nameserver_doh.go

@@ -137,14 +137,32 @@ func (s *DoHNameServer) sendQuery(ctx context.Context, noResponseErrCh chan<- er
 	if s.Name()+"." == "DOH//"+fqdn {
 		errors.LogError(ctx, s.Name(), " tries to resolve itself! Use IP or set \"hosts\" instead")
 		if noResponseErrCh != nil {
-			noResponseErrCh <- errors.New("tries to resolve itself!", s.Name())
+			err := errors.New("tries to resolve itself!", s.Name())
+			if option.IPv4Enable {
+				noResponseErrCh <- err
+			}
+			if option.IPv6Enable {
+				noResponseErrCh <- err
+			}
 		}
 		return
 	}
 
 	// 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 := buildReqMsgs(fqdn, option, s.newReqID, genEDNS0Options(s.clientIP, int(crypto.RandBetween(100, 300))))
+	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 {

app/dns/nameserver_local.go

@@ -18,7 +18,6 @@ type LocalNameServer struct {
 
 // QueryIP implements Server.
 func (s *LocalNameServer) QueryIP(ctx context.Context, domain string, option dns.IPOption) (ips []net.IP, ttl uint32, err error) {
-
 	start := time.Now()
 	ips, ttl, err = s.client.LookupIP(domain, option)
 

app/dns/nameserver_quic.go

@@ -78,7 +78,19 @@ func (s *QUICNameServer) getCacheController() *CacheController { return s.cacheC
 func (s *QUICNameServer) sendQuery(ctx context.Context, noResponseErrCh chan<- error, fqdn string, option dns_feature.IPOption) {
 	errors.LogInfo(ctx, s.Name(), " querying: ", fqdn)
 
-	reqs := buildReqMsgs(fqdn, option, s.newReqID, genEDNS0Options(s.clientIP, 0))
+	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 {

app/dns/nameserver_tcp.go

@@ -113,7 +113,19 @@ func (s *TCPNameServer) getCacheController() *CacheController {
 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 := buildReqMsgs(fqdn, option, s.newReqID, genEDNS0Options(s.clientIP, 0))
+	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 {

app/dns/nameserver_udp.go

@@ -131,8 +131,6 @@ func (s *ClassicNameServer) HandleResponse(ctx context.Context, packet *udp_prot
 			newReq.msg = &newMsg
 			s.addPendingRequest(&newReq)
 			b, _ := dns.PackMessage(newReq.msg)
-			copyDest := net.UDPDestination(s.address.Address, s.address.Port)
-			b.UDP = &copyDest
 			s.udpServer.Dispatch(toDnsContext(newReq.ctx, s.address.String()), *s.address, b)
 			return
 		}
@@ -163,7 +161,19 @@ func (s *ClassicNameServer) getCacheController() *CacheController {
 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 := buildReqMsgs(fqdn, option, s.newReqID, genEDNS0Options(s.clientIP, 0))
+	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 {
 		udpReq := &udpDnsRequest{
@@ -179,8 +189,6 @@ func (s *ClassicNameServer) sendQuery(ctx context.Context, noResponseErrCh chan<
 			}
 			return
 		}
-		copyDest := net.UDPDestination(s.address.Address, s.address.Port)
-		b.UDP = &copyDest
 		s.udpServer.Dispatch(toDnsContext(ctx, s.address.String()), *s.address, b)
 	}
 }

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/metrics/metrics.go

@@ -2,15 +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/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"
@@ -21,15 +24,17 @@ import (
 type MetricsHandler struct {
 	ohm          outbound.Manager
 	statsManager feature_stats.Manager
-	observatory  extension.Observatory
+	ctx          context.Context
 	tag          string
 	listen       string
-	tcpListener  net.Listener
+	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{
+		ctx:    ctx,
 		tag:    config.Tag,
 		listen: config.Listen,
 	}
@@ -37,46 +42,6 @@ func NewMetricsHandler(ctx context.Context, config *Config) (*MetricsHandler, er
 		c.statsManager = sm
 		c.ohm = om
 	}))
-	expvar.Publish("stats", expvar.Func(func() interface{} {
-		resp := map[string]map[string]map[string]int64{
-			"inbound":  {},
-			"outbound": {},
-			"user":     {},
-		}
-		c.statsManager.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
 }
 
@@ -85,46 +50,172 @@ func (p *MetricsHandler) Type() interface{} {
 }
 
 func (p *MetricsHandler) Start() error {
+	handler := p.httpHandler()
 
 	// direct listen a port if listen is set
 	if p.listen != "" {
-		TCPlistener, err := net.Listen("tcp", 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 func() {
-			if err := http.Serve(TCPlistener, http.DefaultServeMux); err != nil {
-				errors.LogErrorInner(context.Background(), err, "failed to start metrics server")
-			}
-		}()
+		go p.serve(TCPlistener, handler)
+	}
+
+	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 net.Conn, 4),
+		buffer: make(chan xnet.Conn, 4),
 		done:   done.New(),
 	}
+	p.listener = listener
 
-	go func() {
-		if err := http.Serve(listener, http.DefaultServeMux); err != nil {
-			errors.LogErrorInner(context.Background(), err, "failed to start metrics server")
-		}
-	}()
+	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/observatory/burst/burstobserver.go

@@ -2,7 +2,6 @@ package burst
 
 import (
 	"context"
-
 	"sync"
 
 	"github.com/xtls/xray-core/app/observatory"
@@ -72,7 +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")
 			}
 

app/observatory/burst/healthping.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"strings"
 	"sync"
+	"sync/atomic"
 	"time"
 
 	"github.com/xtls/xray-core/common/dice"
@@ -24,11 +25,12 @@ type HealthPingSettings struct {
 
 // HealthPing is the health checker for balancers
 type HealthPing struct {
-	ctx         context.Context
-	dispatcher  routing.Dispatcher
-	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
@@ -62,10 +64,10 @@ func NewHealthPing(ctx context.Context, dispatcher routing.Dispatcher, config *H
 		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
@@ -73,10 +75,12 @@ func NewHealthPing(ctx context.Context, dispatcher routing.Dispatcher, config *H
 	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,
+		cancelCtx:  cancel,
 		dispatcher: dispatcher,
 		Settings:   settings,
 		Results:    nil,
@@ -90,9 +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 {
@@ -110,13 +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
 			}
 		}
@@ -130,8 +141,7 @@ func (h *HealthPing) StopScheduler() {
 	}
 	h.ticker.Stop()
 	h.ticker = nil
-	close(h.tickerClose)
-	h.tickerClose = nil
+	h.cancelCtx()
 }
 
 // Check implements the HealthChecker
@@ -140,7 +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
 }
 
@@ -151,13 +161,14 @@ 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(
@@ -172,7 +183,7 @@ func (h *HealthPing) doCheck(tags []string, duration time.Duration, rounds int)
 			if duration > 0 {
 				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(h.Settings.HttpMethod)
 				if err == nil {
@@ -200,14 +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
 		}
 	}
 }

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/observer.go

@@ -186,7 +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}
 	}

app/proxyman/command/command.go

@@ -138,7 +138,7 @@ func (s *handlerServer) GetInboundUsers(ctx context.Context, request *GetInbound
 	if len(request.Email) > 0 {
 		return &GetInboundUserResponse{Users: []*protocol.User{protocol.ToProtoUser(um.GetUser(ctx, request.Email))}}, nil
 	}
-	var result = make([]*protocol.User, 0, 100)
+	result := make([]*protocol.User, 0, 100)
 	users := um.GetUsers(ctx)
 	for _, u := range users {
 		result = append(result, protocol.ToProtoUser(u))

app/proxyman/inbound/always.go

@@ -57,16 +57,23 @@ func NewAlwaysOnInboundHandler(ctx context.Context, tag string, receiverConfig *
 	if err != nil {
 		return nil, err
 	}
-
-	// Set tag and sniffing config in context before creating proxy
-	// This allows proxies like TUN to access these settings
-	ctx = session.ContextWithInbound(ctx, &session.Inbound{Tag: tag})
-	if receiverConfig.SniffingSettings != nil {
-		ctx = session.ContextWithContent(ctx, &session.Content{
-			SniffingRequest: sniffingRequest,
-		})
+	src := net.TCPDestination(net.AnyIP, 0)
+	if receiverConfig.Listen != nil {
+		src.Address = receiverConfig.Listen.AsAddress()
 	}
-	rawProxy, err := common.CreateObject(ctx, proxyConfig)
+	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
 	}
@@ -92,11 +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{}
@@ -170,6 +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

app/proxyman/inbound/inbound.go

@@ -16,10 +16,10 @@ import (
 
 // Manager manages all inbound handlers.
 type Manager struct {
-	access          sync.RWMutex
+	access           sync.RWMutex
 	untaggedHandlers []inbound.Handler
-	taggedHandlers  map[string]inbound.Handler
-	running         bool
+	taggedHandlers   map[string]inbound.Handler
+	running          bool
 }
 
 // New returns a new Manager for inbound handlers.

app/proxyman/inbound/worker.go

@@ -18,9 +18,9 @@ import (
 	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/features/stats"
 	"github.com/xtls/xray-core/proxy"
-	"github.com/xtls/xray-core/proxy/hysteria/account"
-	hyCtx "github.com/xtls/xray-core/proxy/hysteria/ctx"
+	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"
@@ -134,10 +134,8 @@ func (w *tcpWorker) Proxy() proxy.Inbound {
 func (w *tcpWorker) Start() error {
 	ctx := context.Background()
 
-	type HysteriaInboundValidator interface{ HysteriaInboundValidator() *account.Validator }
-	if v, ok := w.proxy.(HysteriaInboundValidator); ok {
-		ctx = hyCtx.ContextWithRequireDatagram(ctx, true)
-		ctx = hyCtx.ContextWithValidator(ctx, v.HysteriaInboundValidator())
+	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) {

app/proxyman/outbound/handler.go

@@ -6,7 +6,6 @@ import (
 	goerrors "errors"
 	"io"
 	"math/big"
-	"os"
 
 	"github.com/xtls/xray-core/common/dice"
 
@@ -109,7 +108,9 @@ func NewHandler(ctx context.Context, config *core.OutboundHandlerConfig) (outbou
 
 	ctx = session.ContextWithFullHandler(ctx, h)
 
-	rawProxyHandler, err := common.CreateObject(ctx, proxyConfig)
+	newCtx := session.ContextWithStreamSettings(ctx, h.streamSettings)
+
+	rawProxyHandler, err := common.CreateObject(newCtx, proxyConfig)
 	if err != nil {
 		return nil, err
 	}
@@ -306,11 +307,6 @@ func (h *Handler) Dial(ctx context.Context, dest net.Destination) (stat.Connecti
 			ob := outbounds[len(outbounds)-1]
 			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)
@@ -348,7 +344,7 @@ func (h *Handler) SetOutboundGateway(ctx context.Context, ob *session.Outbound)
 					errors.LogDebug(ctx, "use inbound source ip as sendthrough: ", inbound.Source.Address.String())
 				}
 			}
-		//case addr.Family().IsDomain():
+		// case addr.Family().IsDomain():
 		default:
 			ob.Gateway = addr
 
@@ -396,7 +392,6 @@ func (h *Handler) ProxySettings() *serial.TypedMessage {
 }
 
 func ParseRandomIP(addr net.Address, prefix string) net.Address {
-
 	_, ipnet, _ := net.ParseCIDR(addr.IP().String() + "/" + prefix)
 
 	ones, bits := ipnet.Mask.Size()

app/proxyman/outbound/handler_test.go

@@ -22,8 +22,8 @@ import (
 )
 
 func TestInterfaces(t *testing.T) {
-	_ = (outbound.Handler)(new(Handler))
-	_ = (outbound.Manager)(new(Manager))
+	_ = outbound.Handler(new(Handler))
+	_ = outbound.Manager(new(Manager))
 }
 
 const xrayKey core.XrayKey = 1
@@ -43,12 +43,12 @@ func TestOutboundWithoutStatCounter(t *testing.T) {
 	}
 
 	v, _ := core.New(config)
-	v.AddFeature((outbound.Manager)(new(Manager)))
+	v.AddFeature(outbound.Manager(new(Manager)))
 	ctx := context.WithValue(context.Background(), xrayKey, v)
 	ctx = session.ContextWithOutbounds(ctx, []*session.Outbound{{}})
 	h, _ := NewHandler(ctx, &core.OutboundHandlerConfig{
 		Tag:           "tag",
-		ProxySettings: serial.ToTypedMessage(&freedom.Config{}),
+		ProxySettings: serial.ToTypedMessage(&freedom.Config{FinalRules: []*freedom.FinalRuleConfig{{Action: freedom.RuleAction_Allow}}}),
 	})
 	conn, _ := h.(*Handler).Dial(ctx, net.TCPDestination(net.DomainAddress("localhost"), 13146))
 	_, ok := conn.(*stat.CounterConnection)
@@ -73,12 +73,12 @@ func TestOutboundWithStatCounter(t *testing.T) {
 	}
 
 	v, _ := core.New(config)
-	v.AddFeature((outbound.Manager)(new(Manager)))
+	v.AddFeature(outbound.Manager(new(Manager)))
 	ctx := context.WithValue(context.Background(), xrayKey, v)
 	ctx = session.ContextWithOutbounds(ctx, []*session.Outbound{{}})
 	h, _ := NewHandler(ctx, &core.OutboundHandlerConfig{
 		Tag:           "tag",
-		ProxySettings: serial.ToTypedMessage(&freedom.Config{}),
+		ProxySettings: serial.ToTypedMessage(&freedom.Config{FinalRules: []*freedom.FinalRuleConfig{{Action: freedom.RuleAction_Allow}}}),
 	})
 	conn, _ := h.(*Handler).Dial(ctx, net.TCPDestination(net.DomainAddress("localhost"), 13146))
 	_, ok := conn.(*stat.CounterConnection)
@@ -88,7 +88,6 @@ func TestOutboundWithStatCounter(t *testing.T) {
 }
 
 func TestTagsCache(t *testing.T) {
-
 	test_duration := 10 * time.Second
 	threads_num := 50
 	delay := 10 * time.Millisecond
@@ -118,7 +117,7 @@ func TestTagsCache(t *testing.T) {
 			tag := fmt.Sprintf("%s%d", tags_prefix, idx)
 			cfg := &core.OutboundHandlerConfig{
 				Tag:           tag,
-				ProxySettings: serial.ToTypedMessage(&freedom.Config{}),
+				ProxySettings: serial.ToTypedMessage(&freedom.Config{FinalRules: []*freedom.FinalRuleConfig{{Action: freedom.RuleAction_Allow}}}),
 			}
 			if h, err := NewHandler(ctx, cfg); err == nil {
 				if err := ohm.AddHandler(ctx, h); err == nil {

app/proxyman/outbound/outbound.go

@@ -162,7 +162,6 @@ func (m *Manager) ListHandlers(ctx context.Context) []outbound.Handler {
 
 // Select implements outbound.HandlerSelector.
 func (m *Manager) Select(selectors []string) []string {
-
 	key := strings.Join(selectors, ",")
 	if cache, ok := m.tagsCache.Load(key); ok {
 		return cache.([]string)

app/proxyman/outbound/uot.go

@@ -1,35 +0,0 @@
-package outbound
-
-import (
-	"context"
-	"os"
-
-	"github.com/sagernet/sing/common/uot"
-	"github.com/xtls/xray-core/common/errors"
-	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/transport/internet"
-	"github.com/xtls/xray-core/transport/internet/stat"
-)
-
-func (h *Handler) getUoTConnection(ctx context.Context, dest net.Destination) (stat.Connection, error) {
-	if dest.Address == nil {
-		return nil, errors.New("nil destination address")
-	}
-	if !dest.Address.Family().IsDomain() {
-		return nil, os.ErrInvalid
-	}
-	var uotVersion int
-	if dest.Address.Domain() == uot.MagicAddress {
-		uotVersion = uot.Version
-	} else if dest.Address.Domain() == uot.LegacyMagicAddress {
-		uotVersion = uot.LegacyVersion
-	} else {
-		return nil, os.ErrInvalid
-	}
-	packetConn, err := internet.ListenSystemPacket(ctx, &net.UDPAddr{IP: net.AnyIP.IP(), Port: 0}, h.streamSettings.SocketSettings)
-	if err != nil {
-		return nil, errors.New("unable to listen socket").Base(err)
-	}
-	conn := uot.NewServerConn(packetConn, uotVersion)
-	return h.getStatCouterConnection(conn), nil
-}

app/router/command/command.go

@@ -58,7 +58,6 @@ func (s *routingServer) AddRule(ctx context.Context, request *AddRuleRequest) (*
 		return &AddRuleResponse{}, bo.AddRule(request.Config, request.ShouldAppend)
 	}
 	return nil, errors.New("unsupported router implementation")
-
 }
 
 func (s *routingServer) RemoveRule(ctx context.Context, request *RemoveRuleRequest) (*RemoveRuleResponse, error) {

app/router/condition.go

@@ -12,6 +12,7 @@ import (
 	"github.com/xtls/xray-core/common/geodata"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/features/routing"
+	"github.com/xtls/xray-core/features/routing/dns"
 )
 
 type Condition interface {
@@ -356,7 +357,13 @@ func (m *ProcessNameMatcher) Apply(ctx routing.Context) bool {
 
 	var dstIP string
 	var dstPort uint16 = 0
-	if len(ctx.GetTargetIPs()) > 0 {
+
+	// do not use resolved IP because Android process lookup needs original dst ip
+	resolvableContext, ok := ctx.(*dns.ResolvableContext)
+	if ok && len(resolvableContext.Context.GetTargetIPs()) > 0 {
+		dstIP = resolvableContext.Context.GetTargetIPs()[0].String()
+		dstPort = uint16(resolvableContext.Context.GetTargetPort())
+	} else if len(ctx.GetTargetIPs()) > 0 {
 		dstIP = ctx.GetTargetIPs()[0].String()
 		dstPort = uint16(ctx.GetTargetPort())
 	}

app/router/router.go

@@ -110,7 +110,6 @@ func (r *Router) PickRoute(ctx routing.Context) (routing.Route, error) {
 
 // AddRule implements routing.Router.
 func (r *Router) AddRule(config *serial.TypedMessage, shouldAppend bool) error {
-
 	inst, err := config.GetInstance()
 	if err != nil {
 		return err
@@ -227,7 +226,6 @@ func (r *Router) RemoveRule(tag string) error {
 		return nil
 	}
 	return errors.New("empty tag name!")
-
 }
 
 // ListRule implements routing.Router

app/router/strategy_leastload.go

@@ -3,6 +3,7 @@ package router
 import (
 	"context"
 	"math"
+	"slices"
 	"sort"
 	"time"
 
@@ -77,7 +78,7 @@ func (s *LeastLoadStrategy) PickOutbound(candidates []string) string {
 }
 
 func (s *LeastLoadStrategy) pickOutbounds(candidates []string) []*node {
-	qualified := s.getNodes(candidates, time.Duration(s.settings.MaxRTT))
+	qualified := s.getNodes(candidates)
 	selects := s.selectLeastLoad(qualified)
 	return selects
 }
@@ -138,7 +139,7 @@ func (s *LeastLoadStrategy) selectLeastLoad(nodes []*node) []*node {
 	return nodes[:count]
 }
 
-func (s *LeastLoadStrategy) getNodes(candidates []string, maxRTT time.Duration) []*node {
+func (s *LeastLoadStrategy) getNodes(candidates []string) []*node {
 	if s.observer == nil {
 		errors.LogError(s.ctx, "observer is nil")
 		return make([]*node, 0)
@@ -151,12 +152,10 @@ func (s *LeastLoadStrategy) getNodes(candidates []string, maxRTT time.Duration)
 
 	results := observeResult.(*observatory.ObservationResult)
 
-	outboundlist := outboundList(candidates)
-
 	var ret []*node
 
 	for _, v := range results.Status {
-		if v.Alive && (v.Delay < maxRTT.Milliseconds() || maxRTT == 0) && outboundlist.contains(v.OutboundTag) {
+		if s.shouldSelectNode(v, candidates) {
 			record := &node{
 				Tag:              v.OutboundTag,
 				CountAll:         1,
@@ -172,8 +171,8 @@ func (s *LeastLoadStrategy) getNodes(candidates []string, maxRTT time.Duration)
 				record.RTTDeviationCost = time.Duration(s.costs.Apply(v.OutboundTag, float64(v.HealthPing.Deviation)))
 				record.CountAll = int(v.HealthPing.All)
 				record.CountFail = int(v.HealthPing.Fail)
-
 			}
+
 			ret = append(ret, record)
 		}
 	}
@@ -182,6 +181,23 @@ func (s *LeastLoadStrategy) getNodes(candidates []string, maxRTT time.Duration)
 	return ret
 }
 
+func (s *LeastLoadStrategy) shouldSelectNode(v *observatory.OutboundStatus, candidates []string) bool {
+	maxRTT := time.Duration(s.settings.MaxRTT)
+	if !v.Alive {
+		return false
+	}
+	if maxRTT != 0 && v.Delay >= maxRTT.Milliseconds() {
+		return false
+	}
+	if !slices.Contains(candidates, v.OutboundTag) {
+		return false
+	}
+	if v.HealthPing != nil && v.HealthPing.All > 0 && s.settings.Tolerance > 0 && float64(v.HealthPing.Fail)/float64(v.HealthPing.All) > float64(s.settings.Tolerance) {
+		return false
+	}
+	return true
+}
+
 func leastloadSort(nodes []*node) {
 	sort.Slice(nodes, func(i, j int) bool {
 		left := nodes[i]

app/router/strategy_leastload_test.go

@@ -85,6 +85,7 @@ func TestSelectLeastExpected(t *testing.T) {
 		t.Errorf("expected: %v, actual: %v", expected, len(ns))
 	}
 }
+
 func TestSelectLeastExpected2(t *testing.T) {
 	strategy := &LeastLoadStrategy{
 		settings: &StrategyLeastLoadConfig{
@@ -102,6 +103,7 @@ func TestSelectLeastExpected2(t *testing.T) {
 		t.Errorf("expected: %v, actual: %v", expected, len(ns))
 	}
 }
+
 func TestSelectLeastExpectedAndBaselines(t *testing.T) {
 	strategy := &LeastLoadStrategy{
 		settings: &StrategyLeastLoadConfig{
@@ -122,6 +124,7 @@ func TestSelectLeastExpectedAndBaselines(t *testing.T) {
 		t.Errorf("expected: %v, actual: %v", expected, len(ns))
 	}
 }
+
 func TestSelectLeastExpectedAndBaselines2(t *testing.T) {
 	strategy := &LeastLoadStrategy{
 		settings: &StrategyLeastLoadConfig{
@@ -142,6 +145,7 @@ func TestSelectLeastExpectedAndBaselines2(t *testing.T) {
 		t.Errorf("expected: %v, actual: %v", expected, len(ns))
 	}
 }
+
 func TestSelectLeastLoadBaselines(t *testing.T) {
 	strategy := &LeastLoadStrategy{
 		settings: &StrategyLeastLoadConfig{
@@ -160,6 +164,7 @@ func TestSelectLeastLoadBaselines(t *testing.T) {
 		t.Errorf("expected: %v, actual: %v", expected, len(ns))
 	}
 }
+
 func TestSelectLeastLoadBaselinesNoQualified(t *testing.T) {
 	strategy := &LeastLoadStrategy{
 		settings: &StrategyLeastLoadConfig{

app/router/webhook.go

@@ -7,61 +7,15 @@ import (
 	"io"
 	"net"
 	"net/http"
-	"path/filepath"
-	"runtime"
-	"strings"
 	"sync"
-	"syscall"
 	"time"
 
 	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/common/utils"
 	"github.com/xtls/xray-core/features/routing"
 	routing_session "github.com/xtls/xray-core/features/routing/session"
 )
 
-// parseURL splits a webhook URL into an HTTP URL and an optional Unix socket
-// path. For regular http/https URLs the input is returned unchanged with an
-// empty socketPath. For Unix sockets the format is:
-//
-//	/path/to/socket.sock:/http/path
-//	@abstract:/http/path
-//	@@padded:/http/path
-//
-// The :/ separator after the socket path delimits the HTTP request path.
-// If omitted, "/" is used.
-func parseURL(raw string) (httpURL, socketPath string) {
-	if len(raw) == 0 || (!filepath.IsAbs(raw) && raw[0] != '@') {
-		return raw, ""
-	}
-	if idx := strings.Index(raw, ":/"); idx >= 0 {
-		return "http://localhost" + raw[idx+1:], raw[:idx]
-	}
-	return "http://localhost/", raw
-}
-
-// resolveSocketPath applies platform-specific transformations to a Unix
-// socket path, matching the behaviour of the listen side in
-// transport/internet/system_listener.go.
-//
-// For abstract sockets (prefix @) on Linux/Android:
-//   - single @ — used as-is (lock-free abstract socket)
-//   - double @@ — stripped to single @ and padded to
-//     syscall.RawSockaddrUnix{}.Path length (HAProxy compat)
-func resolveSocketPath(path string) string {
-	if len(path) == 0 || path[0] != '@' {
-		return path
-	}
-	if runtime.GOOS != "linux" && runtime.GOOS != "android" {
-		return path
-	}
-	if len(path) > 1 && path[1] == '@' {
-		fullAddr := make([]byte, len(syscall.RawSockaddrUnix{}.Path))
-		copy(fullAddr, path[1:])
-		return string(fullAddr)
-	}
-	return path
-}
-
 func ptr[T any](v T) *T { return &v }
 
 type event struct {
@@ -96,7 +50,7 @@ func NewWebhookNotifier(cfg *WebhookConfig) (*WebhookNotifier, error) {
 		return nil, nil
 	}
 
-	httpURL, socketPath := parseURL(cfg.Url)
+	httpURL, socketPath := utils.SplitHTTPUnixURL(cfg.Url)
 	h := &WebhookNotifier{
 		url:           httpURL,
 		deduplication: cfg.Deduplication,
@@ -107,7 +61,7 @@ func NewWebhookNotifier(cfg *WebhookConfig) (*WebhookNotifier, error) {
 	}
 
 	if socketPath != "" {
-		dialAddr := resolveSocketPath(socketPath)
+		dialAddr := utils.ResolveSocketPath(socketPath)
 		h.client.Transport = &http.Transport{
 			DialContext: func(ctx context.Context, _, _ string) (net.Conn, error) {
 				var d net.Dialer

app/stats/stats_test.go

@@ -11,7 +11,7 @@ import (
 )
 
 func TestInterface(t *testing.T) {
-	_ = (stats.Manager)(new(Manager))
+	_ = stats.Manager(new(Manager))
 }
 
 func TestStatsChannelRunnable(t *testing.T) {

app/version/version.go

@@ -2,10 +2,11 @@ package version
 
 import (
 	"context"
-	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/common/errors"
 	"strconv"
 	"strings"
+
+	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 )
 
 type Version struct {

common/buf/multi_buffer.go

@@ -38,8 +38,8 @@ func MergeMulti(dest MultiBuffer, src MultiBuffer) (MultiBuffer, MultiBuffer) {
 // MergeBytes merges the given bytes into MultiBuffer and return the new address of the merged MultiBuffer.
 func MergeBytes(dest MultiBuffer, src []byte) MultiBuffer {
 	n := len(dest)
-	if n > 0 && !(dest)[n-1].IsFull() {
-		nBytes, _ := (dest)[n-1].Write(src)
+	if n > 0 && !dest[n-1].IsFull() {
+		nBytes, _ := dest[n-1].Write(src)
 		src = src[nBytes:]
 	}
 

common/buf/reader_test.go

@@ -121,11 +121,11 @@ func TestPacketReader_ReadMultiBuffer(t *testing.T) {
 }
 
 func TestReaderInterface(t *testing.T) {
-	_ = (io.Reader)(new(ReadVReader))
-	_ = (Reader)(new(ReadVReader))
+	_ = io.Reader(new(ReadVReader))
+	_ = Reader(new(ReadVReader))
 
-	_ = (Reader)(new(BufferedReader))
-	_ = (io.Reader)(new(BufferedReader))
-	_ = (io.ByteReader)(new(BufferedReader))
-	_ = (io.WriterTo)(new(BufferedReader))
+	_ = Reader(new(BufferedReader))
+	_ = io.Reader(new(BufferedReader))
+	_ = io.ByteReader(new(BufferedReader))
+	_ = io.WriterTo(new(BufferedReader))
 }

common/buf/readv_posix.go

@@ -19,7 +19,7 @@ func (r *posixReader) Init(bs []*Buffer) {
 	}
 	for idx, b := range bs {
 		iovecs = append(iovecs, syscall.Iovec{
-			Base: &(b.v[0]),
+			Base: &b.v[0],
 		})
 		iovecs[idx].SetLen(int(Size))
 	}

common/geodata/domain_matcher.go

@@ -8,6 +8,7 @@ import (
 
 	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/geodata/strmatcher"
+	"github.com/xtls/xray-core/common/utils"
 )
 
 type DomainMatcher interface {
@@ -23,10 +24,54 @@ type DomainMatcherFactory interface {
 	BuildMatcher(rules []*DomainRule) (DomainMatcher, error)
 }
 
-type MphDomainMatcherFactory struct{}
+type MphDomainMatcherFactory struct {
+	sync.Mutex
+	shared *utils.WeakCacheMap[string, strmatcher.MphValueMatcher]
+}
+
+func buildDomainRulesKey(rules []*DomainRule) string {
+	var sb strings.Builder
+	cache := false
+	for _, r := range rules {
+		switch v := r.Value.(type) {
+		case *DomainRule_Custom:
+			sb.WriteString(v.Custom.Type.String())
+			sb.WriteString(":")
+			sb.WriteString(v.Custom.Value)
+			sb.WriteString(",")
+		case *DomainRule_Geosite:
+			cache = true
+			sb.WriteString(v.Geosite.File)
+			sb.WriteString(":")
+			sb.WriteString(v.Geosite.Code)
+			sb.WriteString("@")
+			sb.WriteString(v.Geosite.Attrs)
+			sb.WriteString(",")
+		default:
+			panic("unknown domain rule type")
+		}
+	}
+	if !cache {
+		return ""
+	}
+	return sb.String()
+}
 
 // BuildMatcher implements DomainMatcherFactory.
 func (f *MphDomainMatcherFactory) BuildMatcher(rules []*DomainRule) (DomainMatcher, error) {
+	if len(rules) == 0 {
+		return nil, errors.New("empty domain rule list")
+	}
+	key := buildDomainRulesKey(rules)
+	if key != "" {
+		f.Lock()
+		defer f.Unlock()
+		if g, ok := f.shared.Load(key); ok {
+			errors.LogDebug(context.Background(), "geodata mph domain matcher cache HIT for ", len(rules), " rules")
+			return g, nil
+		}
+		errors.LogDebug(context.Background(), "geodata mph domain matcher cache MISS for ", len(rules), " rules")
+	}
 	g := strmatcher.NewMphValueMatcher()
 	for i, r := range rules {
 		switch v := r.Value.(type) {
@@ -57,25 +102,30 @@ func (f *MphDomainMatcherFactory) BuildMatcher(rules []*DomainRule) (DomainMatch
 	if err := g.Build(); err != nil {
 		return nil, err
 	}
+	if key != "" {
+		f.shared.Store(key, g)
+	}
 	return g, nil
 }
 
 type CompactDomainMatcherFactory struct {
 	sync.Mutex
-	shared map[string]strmatcher.MatcherGroup // TODO: cleanup
+	shared *utils.WeakCacheMap[string, strmatcher.LinearAnyMatcher]
 }
 
-func (f *CompactDomainMatcherFactory) getOrCreateFrom(rule *GeoSiteRule) (strmatcher.MatcherGroup, error) {
+func (f *CompactDomainMatcherFactory) getOrCreateFrom(rule *GeoSiteRule) (strmatcher.MatcherSet, error) {
 	key := rule.File + ":" + rule.Code + "@" + rule.Attrs
 
 	f.Lock()
 	defer f.Unlock()
 
-	if m := f.shared[key]; m != nil {
-		return m, nil
+	if s, ok := f.shared.Load(key); ok {
+		errors.LogDebug(context.Background(), "geodata geosite matcher cache HIT ", key)
+		return s, nil
 	}
+	errors.LogDebug(context.Background(), "geodata geosite matcher cache MISS ", key)
 
-	g := strmatcher.NewLinearValueMatcher()
+	s := strmatcher.NewLinearAnyMatcher()
 	domains, err := loadSiteWithAttrs(rule.File, rule.Code, rule.Attrs)
 	if err != nil {
 		return nil, err
@@ -87,16 +137,19 @@ func (f *CompactDomainMatcherFactory) getOrCreateFrom(rule *GeoSiteRule) (strmat
 			errors.LogError(context.Background(), "ignore invalid geosite entry in ", rule.File, ":", rule.Code, " at index ", i, ", ", err)
 			continue
 		}
-		g.Add(m, 0)
+		s.Add(m)
 	}
-	f.shared[key] = g
-	return g, err
+	f.shared.Store(key, s)
+	return s, err
 }
 
 // BuildMatcher implements DomainMatcherFactory.
 func (f *CompactDomainMatcherFactory) BuildMatcher(rules []*DomainRule) (DomainMatcher, error) {
+	if len(rules) == 0 {
+		return nil, errors.New("empty domain rule list")
+	}
 	compact := &CompactDomainMatcher{
-		matchers: make([]strmatcher.MatcherGroup, 0, len(rules)),
+		matchers: make([]strmatcher.MatcherSet, 0, len(rules)),
 		values:   make([]uint32, 0, len(rules)),
 	}
 	for i, r := range rules {
@@ -126,7 +179,7 @@ func (f *CompactDomainMatcherFactory) BuildMatcher(rules []*DomainRule) (DomainM
 
 type CompactDomainMatcher struct {
 	custom   strmatcher.ValueMatcher
-	matchers []strmatcher.MatcherGroup
+	matchers []strmatcher.MatcherSet
 	values   []uint32
 }
 
@@ -167,7 +220,7 @@ func parseDomain(d *Domain) (strmatcher.Matcher, error) {
 	case Domain_Regex:
 		return strmatcher.Regex.New(d.Value)
 	case Domain_Domain:
-		return strmatcher.Domain.New(d.Value)
+		return strmatcher.Domain.New(strings.ToLower(d.Value))
 	case Domain_Full:
 		return strmatcher.Full.New(strings.ToLower(d.Value))
 	default:
@@ -178,8 +231,8 @@ func parseDomain(d *Domain) (strmatcher.Matcher, error) {
 func newDomainMatcherFactory() DomainMatcherFactory {
 	switch runtime.GOOS {
 	case "ios", "android":
-		return &CompactDomainMatcherFactory{shared: make(map[string]strmatcher.MatcherGroup)}
+		return &CompactDomainMatcherFactory{shared: utils.NewWeakCacheMap[string, strmatcher.LinearAnyMatcher]()}
 	default:
-		return &MphDomainMatcherFactory{}
+		return &MphDomainMatcherFactory{shared: utils.NewWeakCacheMap[string, strmatcher.MphValueMatcher]()}
 	}
 }

common/geodata/domain_matcher_test.go

@@ -7,10 +7,11 @@ import (
 	"testing"
 
 	"github.com/xtls/xray-core/common/geodata/strmatcher"
+	"github.com/xtls/xray-core/common/utils"
 )
 
 func TestCompactDomainMatcher_PreservesCustomRuleIndices(t *testing.T) {
-	factory := &CompactDomainMatcherFactory{shared: make(map[string]strmatcher.MatcherGroup)}
+	factory := &CompactDomainMatcherFactory{shared: utils.NewWeakCacheMap[string, strmatcher.LinearAnyMatcher]()}
 	matcher, err := factory.BuildMatcher([]*DomainRule{
 		{Value: &DomainRule_Custom{Custom: &Domain{Type: Domain_Full, Value: "example.com"}}},
 		{Value: &DomainRule_Custom{Custom: &Domain{Type: Domain_Domain, Value: "example.com"}}},
@@ -31,7 +32,7 @@ func TestCompactDomainMatcher_PreservesCustomRuleIndices(t *testing.T) {
 func TestCompactDomainMatcher_PreservesMixedRuleIndices(t *testing.T) {
 	t.Setenv("xray.location.asset", filepath.Join("..", "..", "resources"))
 
-	factory := &CompactDomainMatcherFactory{shared: make(map[string]strmatcher.MatcherGroup)}
+	factory := &CompactDomainMatcherFactory{shared: utils.NewWeakCacheMap[string, strmatcher.LinearAnyMatcher]()}
 	matcher, err := factory.BuildMatcher([]*DomainRule{
 		{Value: &DomainRule_Geosite{Geosite: &GeoSiteRule{File: DefaultGeoSiteDat, Code: "CN"}}},
 		{Value: &DomainRule_Custom{Custom: &Domain{Type: Domain_Full, Value: "163.com"}}},
@@ -50,10 +51,11 @@ func TestCompactDomainMatcher_PreservesMixedRuleIndices(t *testing.T) {
 }
 
 func TestMphDomainMatcher_MatchReturnsDetachedSlice(t *testing.T) {
-	matcher, err := (&MphDomainMatcherFactory{}).BuildMatcher([]*DomainRule{
-		{Value: &DomainRule_Custom{Custom: &Domain{Type: Domain_Full, Value: "example.com"}}},
-		{Value: &DomainRule_Custom{Custom: &Domain{Type: Domain_Domain, Value: "example.com"}}},
-	})
+	matcher, err := (&MphDomainMatcherFactory{shared: utils.NewWeakCacheMap[string, strmatcher.MphValueMatcher]()}).
+		BuildMatcher([]*DomainRule{
+			{Value: &DomainRule_Custom{Custom: &Domain{Type: Domain_Full, Value: "example.com"}}},
+			{Value: &DomainRule_Custom{Custom: &Domain{Type: Domain_Domain, Value: "example.com"}}},
+		})
 	if err != nil {
 		t.Fatalf("BuildMatcher() failed: %v", err)
 	}

common/geodata/domain_registry.go

@@ -1,17 +1,102 @@
 package geodata
 
+import (
+	"context"
+	"sync"
+	"sync/atomic"
+
+	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/common/utils"
+	"github.com/xtls/xray-core/common/uuid"
+)
+
 type DomainRegistry struct {
-	factory DomainMatcherFactory
+	mu       sync.Mutex
+	factory  DomainMatcherFactory
+	matchers *utils.WeakCacheMap[uuid.UUID, DynamicDomainMatcher]
 }
 
 func (r *DomainRegistry) BuildDomainMatcher(rules []*DomainRule) (DomainMatcher, error) {
-	return r.factory.BuildMatcher(rules)
+	r.mu.Lock()
+	defer r.mu.Unlock()
+
+	m, err := r.factory.BuildMatcher(rules)
+	if err != nil {
+		return nil, err
+	}
+
+	d := NewDynamicDomainMatcher(rules, m)
+	r.matchers.Store(uuid.New(), d)
+	return d, nil
+}
+
+func (r *DomainRegistry) Reload() error {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+
+	var matchers []*DynamicDomainMatcher
+	r.matchers.Range(func(_ uuid.UUID, matcher *DynamicDomainMatcher) bool {
+		matchers = append(matchers, matcher)
+		return true
+	})
+	errors.LogInfo(context.Background(), "reloading GeoSite data for ", len(matchers), " domain matcher(s)")
+
+	factory := newDomainMatcherFactory()
+	type reloadEntry struct {
+		dynamic *DynamicDomainMatcher
+		matcher DomainMatcher
+	}
+	reloaded := make([]reloadEntry, len(matchers))
+	for i, d := range matchers {
+		m, err := factory.BuildMatcher(d.rules)
+		if err != nil {
+			errors.LogErrorInner(context.Background(), err, "failed to reload GeoSite data for domain matcher ", i)
+			return err
+		}
+		reloaded[i] = reloadEntry{dynamic: d, matcher: m}
+	}
+	for _, entry := range reloaded {
+		entry.dynamic.Reload(entry.matcher)
+	}
+	r.factory = factory
+	errors.LogInfo(context.Background(), "reloaded GeoSite data for ", len(matchers), " domain matcher(s)")
+	return nil
 }
 
 func newDomainRegistry() *DomainRegistry {
 	return &DomainRegistry{
-		factory: newDomainMatcherFactory(),
+		factory:  newDomainMatcherFactory(),
+		matchers: utils.NewWeakCacheMap[uuid.UUID, DynamicDomainMatcher](),
 	}
 }
 
 var DomainReg = newDomainRegistry()
+
+type domainMatcherState struct {
+	matcher DomainMatcher
+}
+
+type DynamicDomainMatcher struct {
+	rules []*DomainRule
+	state atomic.Pointer[domainMatcherState]
+}
+
+// Match implements DomainMatcher.
+func (d *DynamicDomainMatcher) Match(input string) []uint32 {
+	return d.state.Load().matcher.Match(input)
+}
+
+// MatchAny implements DomainMatcher.
+func (d *DynamicDomainMatcher) MatchAny(input string) bool {
+	return d.state.Load().matcher.MatchAny(input)
+}
+
+func (d *DynamicDomainMatcher) Reload(newMatcher DomainMatcher) {
+	d.state.Store(&domainMatcherState{matcher: newMatcher})
+}
+
+func NewDynamicDomainMatcher(rules []*DomainRule, matcher DomainMatcher) *DynamicDomainMatcher {
+	d := &DynamicDomainMatcher{rules: rules}
+	d.Reload(matcher)
+	return d
+}

common/geodata/ip_matcher.go

@@ -11,6 +11,7 @@ import (
 
 	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/common/utils"
 
 	"go4.org/netipx"
 )
@@ -806,7 +807,7 @@ func (mm *HeuristicMultiIPMatcher) SetReverse(reverse bool) {
 
 type IPSetFactory struct {
 	sync.Mutex
-	shared map[string]*IPSet // TODO: cleanup
+	shared *utils.WeakCacheMap[string, IPSet]
 }
 
 func (f *IPSetFactory) GetOrCreateFromGeoIPRules(rules []*GeoIPRule) (*IPSet, error) {
@@ -815,9 +816,11 @@ func (f *IPSetFactory) GetOrCreateFromGeoIPRules(rules []*GeoIPRule) (*IPSet, er
 	f.Lock()
 	defer f.Unlock()
 
-	if ipset := f.shared[key]; ipset != nil {
+	if ipset, ok := f.shared.Load(key); ok {
+		errors.LogDebug(context.Background(), "geodata geoip matcher cache HIT ", key)
 		return ipset, nil
 	}
+	errors.LogDebug(context.Background(), "geodata geoip matcher cache MISS ", key)
 
 	ipset, err := f.createFrom(func(add func(*CIDR)) error {
 		for _, r := range rules {
@@ -833,7 +836,7 @@ func (f *IPSetFactory) GetOrCreateFromGeoIPRules(rules []*GeoIPRule) (*IPSet, er
 		return nil
 	})
 	if err == nil {
-		f.shared[key] = ipset
+		f.shared.Store(key, ipset)
 	}
 	return ipset, err
 }
@@ -915,24 +918,31 @@ func (f *IPSetFactory) createFrom(yield func(func(*CIDR)) error) (*IPSet, error)
 		return nil, errors.New("failed to build IPv6 set").Base(err)
 	}
 
+	var has4, has6 bool
 	var max4, max6 int
 
 	for _, p := range ipv4.Prefixes() {
+		has4 = true
 		if b := p.Bits(); b > max4 {
 			max4 = b
 		}
 	}
 	for _, p := range ipv6.Prefixes() {
+		has6 = true
 		if b := p.Bits(); b > max6 {
 			max6 = b
 		}
 	}
 
-	if max4 == 0 {
+	if !has4 {
 		max4 = 0xff
+	} else if max4 == 0 {
+		max4 = 0xfe
 	}
-	if max6 == 0 {
+	if !has6 {
 		max6 = 0xff
+	} else if max6 == 0 {
+		max6 = 0xfe
 	}
 
 	return &IPSet{ipv4: ipv4, ipv6: ipv6, max4: uint8(max4), max6: uint8(max6)}, nil
@@ -1007,3 +1017,7 @@ func buildOptimizedIPMatcher(f *IPSetFactory, rules []*IPRule) (IPMatcher, error
 		return &HeuristicMultiIPMatcher{matchers: subs}, nil
 	}
 }
+
+func newIPSetFactory() *IPSetFactory {
+	return &IPSetFactory{shared: utils.NewWeakCacheMap[string, IPSet]()}
+}

common/geodata/ip_matcher_test.go

@@ -97,6 +97,90 @@ func TestIPMatcher(t *testing.T) {
 	}
 }
 
+func TestIPMatcherFullCIDR4(t *testing.T) {
+	matcher := buildIPMatcher(
+		"0.0.0.0/0",
+	)
+
+	testCases := []struct {
+		Input  string
+		Output bool
+	}{
+		{
+			Input:  "192.168.1.1",
+			Output: true,
+		},
+		{
+			Input:  "0.0.0.0",
+			Output: true,
+		},
+		{
+			Input:  "255.255.255.255",
+			Output: true,
+		},
+		{
+			Input:  "2001:cdba::3257:9652",
+			Output: false,
+		},
+		{
+			Input:  "::0",
+			Output: false,
+		},
+		{
+			Input:  "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff",
+			Output: false,
+		},
+	}
+
+	for _, test := range testCases {
+		if v := matcher.Match(xnet.ParseAddress(test.Input).IP()); v != test.Output {
+			t.Error("unexpected output: ", v, " for test case ", test)
+		}
+	}
+}
+
+func TestIPMatcherFullCIDR6(t *testing.T) {
+	matcher := buildIPMatcher(
+		"::0/0",
+	)
+
+	testCases := []struct {
+		Input  string
+		Output bool
+	}{
+		{
+			Input:  "192.168.1.1",
+			Output: false,
+		},
+		{
+			Input:  "0.0.0.0",
+			Output: false,
+		},
+		{
+			Input:  "255.255.255.255",
+			Output: false,
+		},
+		{
+			Input:  "2001:cdba::3257:9652",
+			Output: true,
+		},
+		{
+			Input:  "::0",
+			Output: true,
+		},
+		{
+			Input:  "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff",
+			Output: true,
+		},
+	}
+
+	for _, test := range testCases {
+		if v := matcher.Match(xnet.ParseAddress(test.Input).IP()); v != test.Output {
+			t.Error("unexpected output: ", v, " for test case ", test)
+		}
+	}
+}
+
 func TestIPMatcherRegression(t *testing.T) {
 	matcher := buildIPMatcher(
 		"98.108.20.0/22",
@@ -231,7 +315,7 @@ func TestIPMatcherAnyMatchAndMatches(t *testing.T) {
 	}
 
 	if !matcher.AnyMatch([]net.IP{
-		net.IP{},
+		{},
 		ip("1.1.1.1"),
 		ip("8.8.8.8"),
 	}) {
@@ -261,7 +345,7 @@ func TestIPMatcherAnyMatchAndMatches(t *testing.T) {
 
 	if matcher.Matches([]net.IP{
 		ip("8.8.8.8"),
-		net.IP{},
+		{},
 	}) {
 		t.Fatal("expect Matches to be false when any IP is invalid")
 	}
@@ -278,7 +362,7 @@ func TestIPMatcherFilterIPs(t *testing.T) {
 	}
 
 	matched, unmatched := matcher.FilterIPs([]net.IP{
-		net.IP{},
+		{},
 		ip("8.8.8.8"),
 		ip("91.108.255.254"),
 		ip("1.1.1.1"),

common/geodata/ip_registry.go

@@ -1,17 +1,143 @@
 package geodata
 
+import (
+	"context"
+	"sync"
+	"sync/atomic"
+
+	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/common/utils"
+	"github.com/xtls/xray-core/common/uuid"
+)
+
 type IPRegistry struct {
-	ipsetFactory *IPSetFactory
+	mu       sync.Mutex
+	factory  *IPSetFactory
+	matchers *utils.WeakCacheMap[uuid.UUID, DynamicIPMatcher]
 }
 
 func (r *IPRegistry) BuildIPMatcher(rules []*IPRule) (IPMatcher, error) {
-	return buildOptimizedIPMatcher(r.ipsetFactory, rules)
+	r.mu.Lock()
+	defer r.mu.Unlock()
+
+	m, err := buildOptimizedIPMatcher(r.factory, rules)
+	if err != nil {
+		return nil, err
+	}
+
+	d := NewDynamicIPMatcher(rules, m)
+	r.matchers.Store(uuid.New(), d)
+	return d, nil
+}
+
+func (r *IPRegistry) Reload() error {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+
+	var matchers []*DynamicIPMatcher
+	r.matchers.Range(func(_ uuid.UUID, matcher *DynamicIPMatcher) bool {
+		matchers = append(matchers, matcher)
+		return true
+	})
+	errors.LogInfo(context.Background(), "reloading GeoIP data for ", len(matchers), " IP matcher(s)")
+
+	factory := newIPSetFactory()
+	type reloadEntry struct {
+		dynamic *DynamicIPMatcher
+		matcher IPMatcher
+	}
+	reloaded := make([]reloadEntry, len(matchers))
+	for i, d := range matchers {
+		m, err := buildOptimizedIPMatcher(factory, d.rules)
+		if err != nil {
+			errors.LogErrorInner(context.Background(), err, "failed to reload GeoIP data for IP matcher ", i)
+			return err
+		}
+		reloaded[i] = reloadEntry{dynamic: d, matcher: m}
+	}
+	for _, entry := range reloaded {
+		entry.dynamic.Reload(entry.matcher)
+	}
+	r.factory = factory
+	errors.LogInfo(context.Background(), "reloaded GeoIP data for ", len(matchers), " IP matcher(s)")
+	return nil
 }
 
 func newIPRegistry() *IPRegistry {
 	return &IPRegistry{
-		ipsetFactory: &IPSetFactory{shared: make(map[string]*IPSet)},
+		factory:  newIPSetFactory(),
+		matchers: utils.NewWeakCacheMap[uuid.UUID, DynamicIPMatcher](),
 	}
 }
 
 var IPReg = newIPRegistry()
+
+type ipMatcherState struct {
+	matcher IPMatcher
+}
+
+type DynamicIPMatcher struct {
+	rules      []*IPRule
+	state      atomic.Pointer[ipMatcherState]
+	mu         sync.Mutex
+	reverse    bool
+	reverseSet bool
+}
+
+// Match implements IPMatcher.
+func (d *DynamicIPMatcher) Match(ip net.IP) bool {
+	return d.state.Load().matcher.Match(ip)
+}
+
+// AnyMatch implements IPMatcher.
+func (d *DynamicIPMatcher) AnyMatch(ips []net.IP) bool {
+	return d.state.Load().matcher.AnyMatch(ips)
+}
+
+// Matches implements IPMatcher.
+func (d *DynamicIPMatcher) Matches(ips []net.IP) bool {
+	return d.state.Load().matcher.Matches(ips)
+}
+
+// FilterIPs implements IPMatcher.
+func (d *DynamicIPMatcher) FilterIPs(ips []net.IP) (matched []net.IP, unmatched []net.IP) {
+	return d.state.Load().matcher.FilterIPs(ips)
+}
+
+// ToggleReverse implements IPMatcher.
+func (d *DynamicIPMatcher) ToggleReverse() {
+	d.mu.Lock()
+	defer d.mu.Unlock()
+
+	d.reverse = !d.reverse
+	d.state.Load().matcher.ToggleReverse()
+}
+
+// SetReverse implements IPMatcher.
+func (d *DynamicIPMatcher) SetReverse(reverse bool) {
+	d.mu.Lock()
+	defer d.mu.Unlock()
+
+	d.reverse = reverse
+	d.reverseSet = true
+	d.state.Load().matcher.SetReverse(reverse)
+}
+
+func (d *DynamicIPMatcher) Reload(newMatcher IPMatcher) {
+	d.mu.Lock()
+	defer d.mu.Unlock()
+
+	if d.reverseSet {
+		newMatcher.SetReverse(d.reverse)
+	} else if d.reverse {
+		newMatcher.ToggleReverse()
+	}
+	d.state.Store(&ipMatcherState{matcher: newMatcher})
+}
+
+func NewDynamicIPMatcher(rules []*IPRule, matcher IPMatcher) *DynamicIPMatcher {
+	d := &DynamicIPMatcher{rules: rules}
+	d.Reload(matcher)
+	return d
+}

common/geodata/rule_parser.go

@@ -138,7 +138,7 @@ func ParseDomainRule(r string, defaultType Domain_Type) (*DomainRule, error) {
 	}
 
 	prefix := 0
-	for _, ext := range [...]string{"ext:", "ext-domain:"} {
+	for _, ext := range [...]string{"ext:", "ext-domain:", "ext-site:"} {
 		if strings.HasPrefix(r, ext) {
 			prefix = len(ext)
 			break
@@ -167,7 +167,7 @@ func ParseDomainRules(rules []string, defaultType Domain_Type) ([]*DomainRule, e
 		}
 
 		prefix := 0
-		for _, ext := range [...]string{"ext:", "ext-domain:"} {
+		for _, ext := range [...]string{"ext:", "ext-domain:", "ext-site:"} {
 			if strings.HasPrefix(r, ext) {
 				prefix = len(ext)
 				break

common/geodata/strmatcher/anymatcher_linear.go

@@ -0,0 +1,53 @@
+package strmatcher
+
+// LinearAnyMatcher is an implementation of AnyMatcher.
+type LinearAnyMatcher struct {
+	full   *FullMatcherSet
+	domain *DomainMatcherSet
+	substr *SubstrMatcherSet
+	regex  *SimpleMatcherSet
+}
+
+func NewLinearAnyMatcher() *LinearAnyMatcher {
+	return new(LinearAnyMatcher)
+}
+
+// Add implements AnyMatcher.Add.
+func (s *LinearAnyMatcher) Add(matcher Matcher) {
+	switch matcher := matcher.(type) {
+	case FullMatcher:
+		if s.full == nil {
+			s.full = NewFullMatcherSet()
+		}
+		s.full.AddFullMatcher(matcher)
+	case DomainMatcher:
+		if s.domain == nil {
+			s.domain = NewDomainMatcherSet()
+		}
+		s.domain.AddDomainMatcher(matcher)
+	case SubstrMatcher:
+		if s.substr == nil {
+			s.substr = new(SubstrMatcherSet)
+		}
+		s.substr.AddSubstrMatcher(matcher)
+	default:
+		if s.regex == nil {
+			s.regex = new(SimpleMatcherSet)
+		}
+		s.regex.AddMatcher(matcher)
+	}
+}
+
+// MatchAny implements AnyMatcher.MatchAny.
+func (s *LinearAnyMatcher) MatchAny(input string) bool {
+	if s.full != nil && s.full.MatchAny(input) {
+		return true
+	}
+	if s.domain != nil && s.domain.MatchAny(input) {
+		return true
+	}
+	if s.substr != nil && s.substr.MatchAny(input) {
+		return true
+	}
+	return s.regex != nil && s.regex.MatchAny(input)
+}

common/geodata/strmatcher/matchers.go

@@ -100,10 +100,6 @@ func (t Type) New(pattern string) (Matcher, error) {
 	case Substr:
 		return SubstrMatcher(pattern), nil
 	case Domain:
-		pattern, err := ToDomain(pattern)
-		if err != nil {
-			return nil, err
-		}
 		return DomainMatcher(pattern), nil
 	case Regex: // 1. regex matching is case-sensitive
 		regex, err := regexp.Compile(pattern)
@@ -288,3 +284,65 @@ func CompositeMatchesReverse(matches [][]uint32) []uint32 {
 		return result
 	}
 }
+
+// MatcherSetForAll is an interface indicating a MatcherSet could accept all types of matchers.
+type MatcherSetForAll interface {
+	AddMatcher(matcher Matcher)
+}
+
+// MatcherSetForFull is an interface indicating a MatcherSet could accept FullMatchers.
+type MatcherSetForFull interface {
+	AddFullMatcher(matcher FullMatcher)
+}
+
+// MatcherSetForDomain is an interface indicating a MatcherSet could accept DomainMatchers.
+type MatcherSetForDomain interface {
+	AddDomainMatcher(matcher DomainMatcher)
+}
+
+// MatcherSetForSubstr is an interface indicating a MatcherSet could accept SubstrMatchers.
+type MatcherSetForSubstr interface {
+	AddSubstrMatcher(matcher SubstrMatcher)
+}
+
+// MatcherSetForRegex is an interface indicating a MatcherSet could accept RegexMatchers.
+type MatcherSetForRegex interface {
+	AddRegexMatcher(matcher *RegexMatcher)
+}
+
+// AddMatcherToSet is a helper function to try to add a Matcher to any kind of MatcherSet.
+// It returns error if the MatcherSet does not accept the provided Matcher's type.
+// This function is provided to help writing code to test a MatcherSet.
+func AddMatcherToSet(s MatcherSet, matcher Matcher) error {
+	if s, ok := s.(IndexMatcher); ok {
+		s.Add(matcher)
+		return nil
+	}
+	if s, ok := s.(MatcherSetForAll); ok {
+		s.AddMatcher(matcher)
+		return nil
+	}
+	switch matcher := matcher.(type) {
+	case FullMatcher:
+		if s, ok := s.(MatcherSetForFull); ok {
+			s.AddFullMatcher(matcher)
+			return nil
+		}
+	case DomainMatcher:
+		if s, ok := s.(MatcherSetForDomain); ok {
+			s.AddDomainMatcher(matcher)
+			return nil
+		}
+	case SubstrMatcher:
+		if s, ok := s.(MatcherSetForSubstr); ok {
+			s.AddSubstrMatcher(matcher)
+			return nil
+		}
+	case *RegexMatcher:
+		if s, ok := s.(MatcherSetForRegex); ok {
+			s.AddRegexMatcher(matcher)
+			return nil
+		}
+	}
+	return errors.New("cannot add matcher to matcher set")
+}

common/geodata/strmatcher/matcherset_domain.go

@@ -0,0 +1,79 @@
+package strmatcher
+
+type trieNode2 struct {
+	matched  bool
+	children map[string]*trieNode2
+}
+
+// DomainMatcherSet is an implementation of MatcherSet.
+// It uses trie to optimize both memory consumption and lookup speed. Trie node is domain label based.
+type DomainMatcherSet struct {
+	root *trieNode2
+}
+
+func NewDomainMatcherSet() *DomainMatcherSet {
+	return &DomainMatcherSet{
+		root: new(trieNode2),
+	}
+}
+
+// AddDomainMatcher implements MatcherSetForDomain.AddDomainMatcher.
+func (s *DomainMatcherSet) AddDomainMatcher(matcher DomainMatcher) {
+	node := s.root
+	pattern := matcher.Pattern()
+	for i := len(pattern); i > 0; {
+		var part string
+		for j := i - 1; ; j-- {
+			if pattern[j] == '.' {
+				part = pattern[j+1 : i]
+				i = j
+				break
+			}
+			if j == 0 {
+				part = pattern[j:i]
+				i = j
+				break
+			}
+		}
+		if node.children == nil {
+			node.children = make(map[string]*trieNode2)
+		}
+		next := node.children[part]
+		if next == nil {
+			next = new(trieNode2)
+			node.children[part] = next
+		}
+		node = next
+	}
+
+	node.matched = true
+}
+
+// MatchAny implements MatcherSet.MatchAny.
+func (s *DomainMatcherSet) MatchAny(input string) bool {
+	node := s.root
+	for i := len(input); i > 0; {
+		for j := i - 1; ; j-- {
+			if input[j] == '.' {
+				node = node.children[input[j+1:i]]
+				i = j
+				break
+			}
+			if j == 0 {
+				node = node.children[input[j:i]]
+				i = j
+				break
+			}
+		}
+		if node == nil {
+			return false
+		}
+		if node.matched {
+			return true
+		}
+		if node.children == nil {
+			return false
+		}
+	}
+	return false
+}

common/geodata/strmatcher/matcherset_domain_test.go

@@ -0,0 +1,95 @@
+package strmatcher_test
+
+import (
+	"reflect"
+	"testing"
+
+	. "github.com/xtls/xray-core/common/geodata/strmatcher"
+)
+
+func TestDomainMatcherSet(t *testing.T) {
+	patterns := []struct {
+		Pattern string
+	}{
+		{
+			Pattern: "example.com",
+		},
+		{
+			Pattern: "google.com",
+		},
+		{
+			Pattern: "x.a.com",
+		},
+		{
+			Pattern: "a.b.com",
+		},
+		{
+			Pattern: "c.a.b.com",
+		},
+		{
+			Pattern: "x.y.com",
+		},
+		{
+			Pattern: "x.y.com",
+		},
+	}
+	testCases := []struct {
+		Domain string
+		Result bool
+	}{
+		{
+			Domain: "x.example.com",
+			Result: true,
+		},
+		{
+			Domain: "y.com",
+			Result: false,
+		},
+		{
+			Domain: "a.b.com",
+			Result: true,
+		},
+		{
+			Domain: "c.a.b.com",
+			Result: true,
+		},
+		{
+			Domain: "c.a..b.com",
+			Result: false,
+		},
+		{
+			Domain: ".com",
+			Result: false,
+		},
+		{
+			Domain: "com",
+			Result: false,
+		},
+		{
+			Domain: "",
+			Result: false,
+		},
+		{
+			Domain: "x.y.com",
+			Result: true,
+		},
+	}
+	s := NewDomainMatcherSet()
+	for _, pattern := range patterns {
+		AddMatcherToSet(s, DomainMatcher(pattern.Pattern))
+	}
+	for _, testCase := range testCases {
+		r := s.MatchAny(testCase.Domain)
+		if !reflect.DeepEqual(r, testCase.Result) {
+			t.Error("Failed to match domain: ", testCase.Domain, ", expect ", testCase.Result, ", but got ", r)
+		}
+	}
+}
+
+func TestEmptyDomainMatcherSet(t *testing.T) {
+	s := NewDomainMatcherSet()
+	r := s.MatchAny("example.com")
+	if r {
+		t.Error("Expect false, but ", r)
+	}
+}

common/geodata/strmatcher/matcherset_full.go

@@ -0,0 +1,24 @@
+package strmatcher
+
+// FullMatcherSet is an implementation of MatcherSet.
+// It uses a hash table to facilitate exact match lookup.
+type FullMatcherSet struct {
+	matchers map[string]struct{}
+}
+
+func NewFullMatcherSet() *FullMatcherSet {
+	return &FullMatcherSet{
+		matchers: make(map[string]struct{}),
+	}
+}
+
+// AddFullMatcher implements MatcherSetForFull.AddFullMatcher.
+func (s *FullMatcherSet) AddFullMatcher(matcher FullMatcher) {
+	s.matchers[matcher.Pattern()] = struct{}{}
+}
+
+// MatchAny implements MatcherSet.Any.
+func (s *FullMatcherSet) MatchAny(input string) bool {
+	_, found := s.matchers[input]
+	return found
+}

common/geodata/strmatcher/matcherset_full_test.go

@@ -0,0 +1,65 @@
+package strmatcher_test
+
+import (
+	"reflect"
+	"testing"
+
+	. "github.com/xtls/xray-core/common/geodata/strmatcher"
+)
+
+func TestFullMatcherSet(t *testing.T) {
+	patterns := []struct {
+		Pattern string
+	}{
+		{
+			Pattern: "example.com",
+		},
+		{
+			Pattern: "google.com",
+		},
+		{
+			Pattern: "x.a.com",
+		},
+		{
+			Pattern: "x.y.com",
+		},
+		{
+			Pattern: "x.y.com",
+		},
+	}
+	testCases := []struct {
+		Domain string
+		Result bool
+	}{
+		{
+			Domain: "example.com",
+			Result: true,
+		},
+		{
+			Domain: "y.com",
+			Result: false,
+		},
+		{
+			Domain: "x.y.com",
+			Result: true,
+		},
+	}
+	s := NewFullMatcherSet()
+	for _, pattern := range patterns {
+		AddMatcherToSet(s, FullMatcher(pattern.Pattern))
+	}
+	for _, testCase := range testCases {
+		r := s.MatchAny(testCase.Domain)
+		if !reflect.DeepEqual(r, testCase.Result) {
+			t.Error("Failed to match domain: ", testCase.Domain, ", expect ", testCase.Result, ", but got ", r)
+		}
+	}
+}
+
+func TestEmptyFullMatcherSet(t *testing.T) {
+	s := NewFullMatcherSet()
+	r := s.MatchAny("example.com")
+	if r {
+		t.Error("Expect false, but ", r)
+	}
+}

common/geodata/strmatcher/matcherset_simple.go

@@ -0,0 +1,22 @@
+package strmatcher
+
+// SimpleMatcherSet is an implementation of MatcherSet.
+// It simply stores all matchers in an array and sequentially matches them.
+type SimpleMatcherSet struct {
+	matchers []Matcher
+}
+
+// AddMatcher implements MatcherSetForAll.AddMatcher.
+func (s *SimpleMatcherSet) AddMatcher(matcher Matcher) {
+	s.matchers = append(s.matchers, matcher)
+}
+
+// MatchAny implements MatcherSet.MatchAny.
+func (s *SimpleMatcherSet) MatchAny(input string) bool {
+	for _, m := range s.matchers {
+		if m.Match(input) {
+			return true
+		}
+	}
+	return false
+}

common/geodata/strmatcher/matcherset_simple_test.go

@@ -0,0 +1,69 @@
+package strmatcher_test
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/xtls/xray-core/common"
+	. "github.com/xtls/xray-core/common/geodata/strmatcher"
+)
+
+func TestSimpleMatcherSet(t *testing.T) {
+	patterns := []struct {
+		pattern string
+		mType   Type
+	}{
+		{
+			pattern: "example.com",
+			mType:   Domain,
+		},
+		{
+			pattern: "example.com",
+			mType:   Full,
+		},
+		{
+			pattern: "example.com",
+			mType:   Regex,
+		},
+	}
+	cases := []struct {
+		input  string
+		output bool
+	}{
+		{
+			input:  "www.example.com",
+			output: true,
+		},
+		{
+			input:  "example.com",
+			output: true,
+		},
+		{
+			input:  "www.e3ample.com",
+			output: false,
+		},
+		{
+			input:  "xample.com",
+			output: false,
+		},
+		{
+			input:  "xexample.com",
+			output: true,
+		},
+		{
+			input:  "examplexcom",
+			output: true,
+		},
+	}
+	matcherSet := &SimpleMatcherSet{}
+	for _, entry := range patterns {
+		matcher, err := entry.mType.New(entry.pattern)
+		common.Must(err)
+		common.Must(AddMatcherToSet(matcherSet, matcher))
+	}
+	for _, test := range cases {
+		if r := matcherSet.MatchAny(test.input); !reflect.DeepEqual(r, test.output) {
+			t.Error("unexpected output: ", r, " for test case ", test)
+		}
+	}
+}

common/geodata/strmatcher/matcherset_substr.go

@@ -0,0 +1,24 @@
+package strmatcher
+
+import "strings"
+
+// SubstrMatcherSet is implementation of MatcherSet,
+// It is simply implmeneted to comply with the priority specification of Substr matchers.
+type SubstrMatcherSet struct {
+	patterns []string
+}
+
+// AddSubstrMatcher implements MatcherSetForSubstr.AddSubstrMatcher.
+func (s *SubstrMatcherSet) AddSubstrMatcher(matcher SubstrMatcher) {
+	s.patterns = append(s.patterns, matcher.Pattern())
+}
+
+// MatchAny implements MatcherSet.MatchAny.
+func (s *SubstrMatcherSet) MatchAny(input string) bool {
+	for _, pattern := range s.patterns {
+		if strings.Contains(input, pattern) {
+			return true
+		}
+	}
+	return false
+}

common/geodata/strmatcher/matcherset_substr_test.go

@@ -0,0 +1,77 @@
+package strmatcher_test
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/xtls/xray-core/common"
+	. "github.com/xtls/xray-core/common/geodata/strmatcher"
+)
+
+func TestSubstrMatcherSet(t *testing.T) {
+	patterns := []struct {
+		pattern string
+		mType   Type
+	}{
+		{
+			pattern: "apis",
+			mType:   Substr,
+		},
+		{
+			pattern: "google",
+			mType:   Substr,
+		},
+		{
+			pattern: "apis",
+			mType:   Substr,
+		},
+	}
+	cases := []struct {
+		input  string
+		output bool
+	}{
+		{
+			input:  "google.com",
+			output: true,
+		},
+		{
+			input:  "apis.com",
+			output: true,
+		},
+		{
+			input:  "googleapis.com",
+			output: true,
+		},
+		{
+			input:  "fonts.googleapis.com",
+			output: true,
+		},
+		{
+			input:  "apis.googleapis.com",
+			output: true,
+		},
+		{
+			input:  "baidu.com",
+			output: false,
+		},
+		{
+			input:  "goog",
+			output: false,
+		},
+		{
+			input:  "api",
+			output: false,
+		},
+	}
+	matcherSet := &SubstrMatcherSet{}
+	for _, entry := range patterns {
+		matcher, err := entry.mType.New(entry.pattern)
+		common.Must(err)
+		common.Must(AddMatcherToSet(matcherSet, matcher))
+	}
+	for _, test := range cases {
+		if r := matcherSet.MatchAny(test.input); !reflect.DeepEqual(r, test.output) {
+			t.Error("unexpected output: ", r, " for test case ", test)
+		}
+	}
+}

common/geodata/strmatcher/strmatcher.go

@@ -15,7 +15,7 @@ const (
 )
 
 // Matcher is the interface to determine a string matches a pattern.
-//   - This is a basic matcher to represent a certain kind of match semantic(full, substr, domain or regex).
+//   - This is a basic matcher to represent a certain kind of match semantic (full, substr, domain or regex).
 type Matcher interface {
 	// Type returns the matcher's type.
 	Type() Type
@@ -101,3 +101,21 @@ type ValueMatcher interface {
 	// MatchAny returns true as soon as one matching matcher is found.
 	MatchAny(input string) bool
 }
+
+// MatcherSet is an advanced type of matcher to accept a bunch of basic Matchers (of certain type, not all matcher types).
+// For example:
+//   - FullMatcherSet accepts FullMatcher and uses a hash table to facilitate lookup.
+//   - DomainMatcherSet accepts DomainMatcher and uses a trie to optimize both memory consumption and lookup speed.
+type MatcherSet interface {
+	// MatchAny returns true as soon as one matching matcher is found.
+	MatchAny(input string) bool
+}
+
+// AnyMatcher is a lightweight matcher for callers that only need existence checks.
+type AnyMatcher interface {
+	// Add adds a new Matcher to AnyMatcher.
+	Add(matcher Matcher)
+
+	// MatchAny returns true as soon as one matching matcher is found.
+	MatchAny(input string) bool
+}

common/log/logger.go

@@ -98,7 +98,6 @@ func (l *generalLogger) run() {
 }
 
 func (l *generalLogger) Handle(msg Message) {
-
 	select {
 	case l.buffer <- msg:
 	default:

common/platform/filesystem/file.go

@@ -1,6 +1,7 @@
 package filesystem
 
 import (
+	"errors"
 	"io"
 	"os"
 	"path/filepath"
@@ -26,11 +27,48 @@ func ReadFile(path string) ([]byte, error) {
 }
 
 func ReadAsset(file string) ([]byte, error) {
-	return ReadFile(platform.GetAssetLocation(file))
+	path, _, err := getAssetFileLocation(file)
+	if err != nil {
+		return nil, err
+	}
+	return ReadFile(path)
 }
 
 func OpenAsset(file string) (io.ReadCloser, error) {
-	return NewFileReader(platform.GetAssetLocation(file))
+	path, _, err := getAssetFileLocation(file)
+	if err != nil {
+		return nil, err
+	}
+	return NewFileReader(path)
+}
+
+func StatAsset(file string) (os.FileInfo, error) {
+	_, info, err := getAssetFileLocation(file)
+	return info, err
+}
+
+func ResolveAsset(file string) (string, error) {
+	path, _, err := getAssetFileLocation(file)
+	return path, err
+}
+
+func getAssetFileLocation(file string) (string, os.FileInfo, error) {
+	if !filepath.IsLocal(file) || file == "." {
+		return "", nil, errors.New("asset path must stay in asset directory")
+	}
+	local, err := filepath.Localize(file)
+	if err != nil {
+		return "", nil, err
+	}
+	path := platform.GetAssetLocation(local)
+	info, err := os.Stat(path)
+	if err != nil {
+		return "", nil, err
+	}
+	if !info.Mode().IsRegular() {
+		return "", nil, errors.New("asset is not a regular file")
+	}
+	return path, info, nil
 }
 
 func ReadCert(file string) ([]byte, error) {

common/platform/filesystem/file_test.go

@@ -0,0 +1,32 @@
+package filesystem_test
+
+import (
+	"path/filepath"
+	"testing"
+
+	. "github.com/xtls/xray-core/common/platform/filesystem"
+)
+
+func TestStatAssetRejectsInvalidPath(t *testing.T) {
+	for _, file := range []string{
+		"",
+		".",
+		"..",
+		"../geoip.dat",
+		"nested/..",
+		"nested/../geoip.dat",
+		"nested//geoip.dat",
+		"/geoip.dat",
+		"/tmp/geoip.dat",
+		`C:\geoip.dat`,
+		`C:geoip.dat`,
+		`\\server\share\geoip.dat`,
+		`nested\geoip.dat`,
+		`nested\..\geoip.dat`,
+		filepath.Join(t.TempDir(), "geoip.dat"),
+	} {
+		if _, err := StatAsset(file); err == nil {
+			t.Fatalf("expected error for %q", file)
+		}
+	}
+}

common/platform/platform.go

@@ -17,6 +17,7 @@ const (
 	UseFreedomSplice = "xray.buf.splice"
 	UseVmessPadding  = "xray.vmess.padding"
 	UseCone          = "xray.cone.disabled"
+	UseStrictJSON    = "xray.json.strict"
 
 	BufferSize           = "xray.ray.buffer.size"
 	BrowserDialerAddress = "xray.browser.dialer"

common/platform/platform_test.go

@@ -36,9 +36,10 @@ func TestNormalizeEnvName(t *testing.T) {
 }
 
 func TestEnvFlag(t *testing.T) {
-	if v := (EnvFlag{
+	v := EnvFlag{
 		Name: "xxxxx.y",
-	}.GetValueAsInt(10)); v != 10 {
+	}.GetValueAsInt(10)
+	if v != 10 {
 		t.Error("env value: ", v)
 	}
 }

common/protocol/http/headers.go

@@ -1,25 +1,41 @@
 package http
 
 import (
+	"context"
 	"net/http"
 	"strconv"
 	"strings"
 
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 )
 
-// ParseXForwardedFor parses X-Forwarded-For header in http headers, and return the IP list in it.
-func ParseXForwardedFor(header http.Header) []net.Address {
-	xff := header.Get("X-Forwarded-For")
-	if xff == "" {
-		return nil
+// ApplyTrustedXForwardedFor returns remoteAddr overridden by X-Forwarded-For only when a configured trusted header is present.
+func ApplyTrustedXForwardedFor(header http.Header, trusted []string, remoteAddr net.Addr) net.Addr {
+	value := header.Get("X-Forwarded-For")
+	if value == "" {
+		return remoteAddr
 	}
-	list := strings.Split(xff, ",")
-	addrs := make([]net.Address, 0, len(list))
-	for _, proxy := range list {
-		addrs = append(addrs, net.ParseAddress(proxy))
+	for _, t := range trusted {
+		if len(header.Values(t)) > 0 {
+			if idx := strings.IndexByte(value, ','); idx >= 0 {
+				value = value[:idx]
+			}
+			if addr := net.ParseAddress(value); addr.Family().IsIP() {
+				return &net.TCPAddr{
+					IP:   addr.IP(),
+					Port: 0,
+				}
+			}
+			return remoteAddr
+		}
 	}
-	return addrs
+	if len(trusted) == 0 {
+		errors.LogWarning(context.Background(), `received "X-Forwarded-For" from `, remoteAddr, ` but "sockopt.trustedXForwardedFor" is not configured; ignoring it and using the real remote address`)
+	} else {
+		errors.LogError(context.Background(), `ignored potentially forged "X-Forwarded-For" from `, remoteAddr, `: `, value)
+	}
+	return remoteAddr
 }
 
 // RemoveHopByHopHeaders removes hop by hop headers in http header list.

common/protocol/http/headers_test.go

@@ -2,23 +2,48 @@ package http_test
 
 import (
 	"bufio"
+	gonet "net"
 	"net/http"
 	"strings"
 	"testing"
 
-	"github.com/google/go-cmp/cmp"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/net"
 	. "github.com/xtls/xray-core/common/protocol/http"
 )
 
-func TestParseXForwardedFor(t *testing.T) {
-	header := http.Header{}
-	header.Add("X-Forwarded-For", "129.78.138.66, 129.78.64.103")
-	addrs := ParseXForwardedFor(header)
-	if r := cmp.Diff(addrs, []net.Address{net.ParseAddress("129.78.138.66"), net.ParseAddress("129.78.64.103")}); r != "" {
-		t.Error(r)
-	}
+func TestApplyTrustedXForwardedFor(t *testing.T) {
+	remoteAddr := &gonet.TCPAddr{IP: gonet.ParseIP("127.0.0.1"), Port: 12345}
+
+	t.Run("ignore X-Forwarded-For without trusted header", func(t *testing.T) {
+		header := http.Header{}
+		header.Add("X-Forwarded-For", "129.78.138.66, 129.78.64.103")
+
+		if addr := ApplyTrustedXForwardedFor(header, nil, remoteAddr); addr != remoteAddr {
+			t.Fatalf("unexpected remote address: %v", addr)
+		}
+	})
+
+	t.Run("trust X-Forwarded-For", func(t *testing.T) {
+		header := http.Header{}
+		header.Add("X-Forwarded-For", "129.78.138.66, 129.78.64.103")
+		header.Add("X-Trusted-CDN", "")
+
+		addr := ApplyTrustedXForwardedFor(header, []string{"X-Trusted-CDN"}, remoteAddr)
+		if addr.String() != "129.78.138.66:0" {
+			t.Fatalf("unexpected remote address: %v", addr)
+		}
+	})
+
+	t.Run("ignore non-IP X-Forwarded-For", func(t *testing.T) {
+		header := http.Header{}
+		header.Add("X-Forwarded-For", "example.com")
+		header.Add("X-Trusted-CDN", "")
+
+		if addr := ApplyTrustedXForwardedFor(header, []string{"X-Trusted-CDN"}, remoteAddr); addr != remoteAddr {
+			t.Fatalf("unexpected remote address: %v", addr)
+		}
+	})
 }
 
 func TestHopByHopHeadersRemoving(t *testing.T) {

common/protocol/id.go

@@ -19,7 +19,7 @@ type ID struct {
 
 // Equals returns true if this ID equals to the other one.
 func (id *ID) Equals(another *ID) bool {
-	return id.uuid.Equals(&(another.uuid))
+	return id.uuid.Equals(&another.uuid)
 }
 
 func (id *ID) Bytes() []byte {

common/protocol/quic/sniff_test.go

@@ -229,7 +229,7 @@ func TestSniffQUICComplex(t *testing.T) {
 				t.Errorf("SniffQUIC() error = %v, wantErr %v", err, tt.wantErr)
 				return
 			}
-			if (errors.Is(err, protocol.ErrProtoNeedMoreData)) != tt.needsMoreData {
+			if errors.Is(err, protocol.ErrProtoNeedMoreData) != tt.needsMoreData {
 				t.Errorf("SniffQUIC() error = %v, expectsNoClue %v", err, tt.needsMoreData)
 				return
 			}

common/protocol/server_spec.go

@@ -5,8 +5,8 @@ import (
 )
 
 type ServerSpec struct {
-	Destination  net.Destination
-	User         *MemoryUser
+	Destination net.Destination
+	User        *MemoryUser
 }
 
 func NewServerSpec(dest net.Destination, user *MemoryUser) *ServerSpec {

common/reflect/marshal.go

@@ -228,7 +228,6 @@ func isValueKind(kind reflect.Kind) bool {
 }
 
 func marshalInterface(v interface{}, ignoreNullValue bool, insertTypeInfo bool) interface{} {
-
 	if r, ok := marshalKnownType(v, ignoreNullValue, insertTypeInfo); ok {
 		return r
 	}

common/reflect/marshal_test.go

@@ -27,7 +27,6 @@ func TestMashalAccount(t *testing.T) {
 
 	j, ok := MarshalToJson(user, false)
 	if !ok || strings.Contains(j, "_TypedMessage_") {
-
 		t.Error("marshal account failed")
 	}
 
@@ -79,13 +78,12 @@ func TestMashalStruct(t *testing.T) {
 
 	v := (*f2.Arr)[0]["foo"]["hello"]
 
-	if f1.N != f2.N || *(f1.Np) != *(f2.Np) || f1.S != f2.S || v != "world" {
+	if f1.N != f2.N || *f1.Np != *f2.Np || f1.S != f2.S || v != "world" {
 		t.Error("f1 not equal to f2")
 	}
 }
 
 func TestMarshalConfigJson(t *testing.T) {
-
 	buf := bytes.NewBufferString(getConfig())
 	config, err := iserial.DecodeJSONConfig(buf)
 	if err != nil {

common/serial/typed_message_test.go

@@ -4,7 +4,6 @@ import (
 	"testing"
 
 	. "github.com/xtls/xray-core/common/serial"
-	"github.com/xtls/xray-core/transport/internet/finalmask/header/custom"
 )
 
 func TestGetInstance(t *testing.T) {
@@ -23,31 +22,3 @@ func TestConvertingNilMessage(t *testing.T) {
 		t.Error("expect nil, but actually not")
 	}
 }
-
-func TestTypedMessageRoundTripPreservesFinalmaskCustomUDPMode(t *testing.T) {
-	msg := &custom.UDPConfig{
-		Mode: "standalone",
-		Client: []*custom.UDPItem{
-			{Rand: 12, Save: "txid"},
-		},
-	}
-
-	tm := ToTypedMessage(msg)
-	if tm == nil {
-		t.Fatal("expected typed message")
-	}
-
-	roundTrip, err := tm.GetInstance()
-	if err != nil {
-		t.Fatalf("GetInstance() failed: %v", err)
-	}
-
-	udp, ok := roundTrip.(*custom.UDPConfig)
-	if !ok {
-		t.Fatalf("unexpected round-trip type: %T", roundTrip)
-	}
-
-	if udp.GetMode() != "standalone" {
-		t.Fatalf("mode lost during typed message round-trip: got %q", udp.GetMode())
-	}
-}

common/session/context.go

@@ -26,6 +26,8 @@ const (
 	fullHandlerKey            ctx.SessionKey = 10 // outbound gets full handler
 	mitmAlpn11Key             ctx.SessionKey = 11 // used by TLS dialer
 	mitmServerNameKey         ctx.SessionKey = 12 // used by TLS dialer
+
+	streamSettingsKey ctx.SessionKey = 13
 )
 
 func ContextWithInbound(ctx context.Context, inbound *Inbound) context.Context {
@@ -192,3 +194,11 @@ func MitmServerNameFromContext(ctx context.Context) string {
 	}
 	return ""
 }
+
+func ContextWithStreamSettings(ctx context.Context, streamSettings any) context.Context {
+	return context.WithValue(ctx, streamSettingsKey, streamSettings)
+}
+
+func StreamSettingsFromContext(ctx context.Context) any {
+	return ctx.Value(streamSettingsKey)
+}

common/singbridge/destination.go

@@ -3,6 +3,7 @@ package singbridge
 import (
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 )
 
@@ -17,14 +18,14 @@ func ToNetwork(network string) net.Network {
 	}
 }
 
-func ToDestination(socksaddr M.Socksaddr, network net.Network) net.Destination {
+func ToDestination(socksaddr M.Socksaddr, network net.Network) (net.Destination, error) {
 	// IsFqdn() implicitly checks if the domain name is valid
 	if socksaddr.IsFqdn() {
 		return net.Destination{
 			Network: network,
 			Address: net.DomainAddress(socksaddr.Fqdn),
 			Port:    net.Port(socksaddr.Port),
-		}
+		}, nil
 	}
 
 	// IsIP() implicitly checks if the IP address is valid
@@ -33,10 +34,10 @@ func ToDestination(socksaddr M.Socksaddr, network net.Network) net.Destination {
 			Network: network,
 			Address: net.IPAddress(socksaddr.Addr.AsSlice()),
 			Port:    net.Port(socksaddr.Port),
-		}
+		}, nil
 	}
 
-	return net.Destination{}
+	return net.Destination{}, errors.New("invalid socks address: ", socksaddr)
 }
 
 func ToSocksaddr(destination net.Destination) M.Socksaddr {

common/singbridge/dialer.go

@@ -26,7 +26,11 @@ func NewDialer(dialer internet.Dialer) *XrayDialer {
 }
 
 func (d *XrayDialer) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
-	return d.Dialer.Dial(ctx, ToDestination(destination, ToNetwork(network)))
+	dest, err := ToDestination(destination, ToNetwork(network))
+	if err != nil {
+		return nil, err
+	}
+	return d.Dialer.Dial(ctx, dest)
 }
 
 func (d *XrayDialer) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
@@ -43,13 +47,17 @@ func NewOutboundDialer(outbound proxy.Outbound, dialer internet.Dialer) *XrayOut
 }
 
 func (d *XrayOutboundDialer) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
+	dest, err := ToDestination(destination, ToNetwork(network))
+	if err != nil {
+		return nil, err
+	}
 	outbounds := session.OutboundsFromContext(ctx)
 	if len(outbounds) == 0 {
 		outbounds = []*session.Outbound{{}}
 		ctx = session.ContextWithOutbounds(ctx, outbounds)
 	}
 	ob := outbounds[len(outbounds)-1]
-	ob.Target = ToDestination(destination, ToNetwork(network))
+	ob.Target = dest
 
 	opts := []pipe.Option{pipe.WithSizeLimit(64 * 1024)}
 	uplinkReader, uplinkWriter := pipe.New(opts...)

common/singbridge/handler.go

@@ -31,15 +31,23 @@ func NewDispatcher(dispatcher routing.Dispatcher, newErrorFunc func(values ...an
 }
 
 func (d *Dispatcher) NewConnection(ctx context.Context, conn net.Conn, metadata M.Metadata) error {
+	dest, err := ToDestination(metadata.Destination, net.Network_TCP)
+	if err != nil {
+		return err
+	}
 	xConn := NewConn(conn)
-	return d.upstream.DispatchLink(ctx, ToDestination(metadata.Destination, net.Network_TCP), &transport.Link{
+	return d.upstream.DispatchLink(ctx, dest, &transport.Link{
 		Reader: xConn,
 		Writer: xConn,
 	})
 }
 
 func (d *Dispatcher) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata M.Metadata) error {
-	return d.upstream.DispatchLink(ctx, ToDestination(metadata.Destination, net.Network_UDP), &transport.Link{
+	dest, err := ToDestination(metadata.Destination, net.Network_UDP)
+	if err != nil {
+		return err
+	}
+	return d.upstream.DispatchLink(ctx, dest, &transport.Link{
 		Reader: buf.NewPacketReader(conn.(io.Reader)),
 		Writer: buf.NewWriter(conn.(io.Writer)),
 	})

common/singbridge/packet.go

@@ -10,15 +10,21 @@ import (
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/common/signal"
 	"github.com/xtls/xray-core/transport"
 )
 
 func CopyPacketConn(ctx context.Context, inboundConn net.Conn, link *transport.Link, destination net.Destination, serverConn net.PacketConn) error {
+	cancel := func() {
+		common.Interrupt(link.Reader)
+		common.Interrupt(serverConn)
+	}
 	conn := &PacketConnWrapper{
 		Reader: link.Reader,
 		Writer: link.Writer,
 		Dest:   destination,
 		Conn:   inboundConn,
+		T:      signal.CancelAfterInactivity(ctx, cancel, 300*time.Second),
 	}
 	return ReturnError(bufio.CopyPacketConn(ctx, conn, bufio.NewPacketConn(serverConn)))
 }
@@ -29,11 +35,19 @@ type PacketConnWrapper struct {
 	net.Conn
 	Dest   net.Destination
 	cached buf.MultiBuffer
+
+	// A simple patch to avoid goroutine leak since sing infra cannot awake read block by write err
+	T *signal.ActivityTimer
 }
 
-// This ReadPacket implemented a timeout to avoid goroutine leak like PipeConnWrapper.Read()
-// as a temporarily solution
-func (w *PacketConnWrapper) ReadPacket(buffer *B.Buffer) (M.Socksaddr, error) {
+func (w *PacketConnWrapper) ReadPacket(buffer *B.Buffer) (addr M.Socksaddr, err error) {
+	w.T.Update()
+	defer func() {
+		if err != nil {
+			// uplinkonly
+			w.T.SetTimeout(2 * time.Second)
+		}
+	}()
 	if w.cached != nil {
 		mb, bb := buf.SplitFirst(w.cached)
 		if bb == nil {
@@ -51,30 +65,7 @@ func (w *PacketConnWrapper) ReadPacket(buffer *B.Buffer) (M.Socksaddr, error) {
 			return ToSocksaddr(destination), nil
 		}
 	}
-
-	// timeout
-	type readResult struct {
-		mb  buf.MultiBuffer
-		err error
-	}
-	c := make(chan readResult, 1)
-	go func() {
-		mb, err := w.ReadMultiBuffer()
-		c <- readResult{mb: mb, err: err}
-	}()
-	var mb buf.MultiBuffer
-	select {
-	case <-time.After(60 * time.Second):
-		common.Close(w.Reader)
-		common.Interrupt(w.Reader)
-		return M.Socksaddr{}, buf.ErrReadTimeout
-	case result := <-c:
-		if result.err != nil {
-			return M.Socksaddr{}, result.err
-		}
-		mb = result.mb
-	}
-
+	mb, err := w.ReadMultiBuffer()
 	nb, bb := buf.SplitFirst(mb)
 	if bb == nil {
 		return M.Socksaddr{}, nil
@@ -92,12 +83,22 @@ func (w *PacketConnWrapper) ReadPacket(buffer *B.Buffer) (M.Socksaddr, error) {
 	}
 }
 
-func (w *PacketConnWrapper) WritePacket(buffer *B.Buffer, destination M.Socksaddr) error {
+func (w *PacketConnWrapper) WritePacket(buffer *B.Buffer, destination M.Socksaddr) (err error) {
+	w.T.Update()
+	defer func() {
+		if err != nil {
+			// downlinkonly
+			w.T.SetTimeout(5 * time.Second)
+		}
+	}()
+	endpoint, err := ToDestination(destination, net.Network_UDP)
+	if err != nil {
+		return err
+	}
 	vBuf := buf.New()
 	vBuf.Write(buffer.Bytes())
-	endpoint := ToDestination(destination, net.Network_UDP)
 	vBuf.UDP = &endpoint
-	return w.Writer.WriteMultiBuffer(buf.MultiBuffer{vBuf})
+	return w.WriteMultiBuffer(buf.MultiBuffer{vBuf})
 }
 
 func (w *PacketConnWrapper) Close() error {

common/singbridge/pipe.go

@@ -9,6 +9,7 @@ import (
 	"github.com/sagernet/sing/common/bufio"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
+	"github.com/xtls/xray-core/common/signal"
 	"github.com/xtls/xray-core/transport"
 )
 
@@ -22,6 +23,11 @@ func CopyConn(ctx context.Context, inboundConn net.Conn, link *transport.Link, s
 	} else {
 		conn.R = &buf.BufferedReader{Reader: link.Reader}
 	}
+	cancel := func() {
+		common.Interrupt(link.Reader)
+		common.Interrupt(serverConn)
+	}
+	conn.T = signal.CancelAfterInactivity(ctx, cancel, 300*time.Second)
 	return ReturnError(bufio.CopyConn(ctx, conn, serverConn))
 }
 
@@ -29,35 +35,27 @@ type PipeConnWrapper struct {
 	R io.Reader
 	W buf.Writer
 	net.Conn
+
+	// A simple patch to avoid goroutine leak since sing infra cannot awake read block by write err
+	T *signal.ActivityTimer
 }
 
 func (w *PipeConnWrapper) Close() error {
 	return nil
 }
 
-// This Read implemented a timeout to avoid goroutine leak.
-// as a temporarily solution
 func (w *PipeConnWrapper) Read(b []byte) (n int, err error) {
-	type readResult struct {
-		n   int
-		err error
-	}
-	c := make(chan readResult, 1)
-	go func() {
-		n, err := w.R.Read(b)
-		c <- readResult{n: n, err: err}
-	}()
-	select {
-	case result := <-c:
-		return result.n, result.err
-	case <-time.After(300 * time.Second):
-		common.Close(w.R)
-		common.Interrupt(w.R)
-		return 0, buf.ErrReadTimeout
+	w.T.Update()
+	n, err = w.R.Read(b)
+	if err != nil {
+		// uplinkonly
+		w.T.SetTimeout(2 * time.Second)
 	}
+	return
 }
 
 func (w *PipeConnWrapper) Write(p []byte) (n int, err error) {
+	w.T.Update()
 	n = len(p)
 	var mb buf.MultiBuffer
 	pLen := len(p)
@@ -76,6 +74,8 @@ func (w *PipeConnWrapper) Write(p []byte) (n int, err error) {
 	if err != nil {
 		n = 0
 		buf.ReleaseMulti(mb)
+		// downlinkonly
+		w.T.SetTimeout(5 * time.Second)
 	}
 	return
 }

common/task/parallel.go

@@ -0,0 +1,43 @@
+package task
+
+import (
+	"runtime"
+
+	"golang.org/x/sync/errgroup"
+)
+
+// ParallelForN runs fn(0..n-1) in parallel across runtime.GOMAXPROCS(0) worker
+// goroutines. Indices are partitioned into contiguous chunks so the number of
+// spawned goroutines stays bounded regardless of n.
+//
+// fn must be safe to call concurrently from different goroutines (each call
+// receives its own unique index). Output collected by writing to indexed slots
+// in a pre-allocated slice is a common safe pattern.
+//
+// Returns the first non-nil error reported by fn; other workers may still be
+// finishing briefly afterwards.
+func ParallelForN(n int, fn func(i int) error) error {
+	if n <= 0 {
+		return nil
+	}
+	workers := max(runtime.GOMAXPROCS(0), 1)
+	workers = min(workers, n)
+	chunk := (n + workers - 1) / workers
+	var eg errgroup.Group
+	for w := range workers {
+		start := w * chunk
+		end := min(start+chunk, n)
+		if start >= end {
+			break
+		}
+		eg.Go(func() error {
+			for i := start; i < end; i++ {
+				if err := fn(i); err != nil {
+					return err
+				}
+			}
+			return nil
+		})
+	}
+	return eg.Wait()
+}

common/task/parallel_test.go

@@ -0,0 +1,50 @@
+package task_test
+
+import (
+	"errors"
+	"sync/atomic"
+	"testing"
+
+	"github.com/xtls/xray-core/common"
+	. "github.com/xtls/xray-core/common/task"
+)
+
+func TestParallelForN_Empty(t *testing.T) {
+	called := false
+	err := ParallelForN(0, func(i int) error {
+		called = true
+		return nil
+	})
+	common.Must(err)
+	if called {
+		t.Fatal("fn should not be called when n=0")
+	}
+}
+
+func TestParallelForN_AllIndicesCovered(t *testing.T) {
+	const N = 10000
+	var seen [N]int32
+	err := ParallelForN(N, func(i int) error {
+		atomic.AddInt32(&seen[i], 1)
+		return nil
+	})
+	common.Must(err)
+	for i := 0; i < N; i++ {
+		if seen[i] != 1 {
+			t.Fatalf("index %d called %d times, expected 1", i, seen[i])
+		}
+	}
+}
+
+func TestParallelForN_Error(t *testing.T) {
+	boom := errors.New("boom")
+	err := ParallelForN(1000, func(i int) error {
+		if i == 42 {
+			return boom
+		}
+		return nil
+	})
+	if err != boom {
+		t.Fatalf("expected %v, got %v", boom, err)
+	}
+}

common/units/bytesize_test.go

@@ -10,37 +10,44 @@ func TestByteSizes(t *testing.T) {
 	size := units.ByteSize(0)
 	assertSizeString(t, size, "0")
 	size++
-	assertSizeValue(t,
+	assertSizeValue(
+		t,
 		assertSizeString(t, size, "1.00B"),
 		size,
 	)
 	size <<= 10
-	assertSizeValue(t,
+	assertSizeValue(
+		t,
 		assertSizeString(t, size, "1.00KB"),
 		size,
 	)
 	size <<= 10
-	assertSizeValue(t,
+	assertSizeValue(
+		t,
 		assertSizeString(t, size, "1.00MB"),
 		size,
 	)
 	size <<= 10
-	assertSizeValue(t,
+	assertSizeValue(
+		t,
 		assertSizeString(t, size, "1.00GB"),
 		size,
 	)
 	size <<= 10
-	assertSizeValue(t,
+	assertSizeValue(
+		t,
 		assertSizeString(t, size, "1.00TB"),
 		size,
 	)
 	size <<= 10
-	assertSizeValue(t,
+	assertSizeValue(
+		t,
 		assertSizeString(t, size, "1.00PB"),
 		size,
 	)
 	size <<= 10
-	assertSizeValue(t,
+	assertSizeValue(
+		t,
 		assertSizeString(t, size, "1.00EB"),
 		size,
 	)

common/utils/browser.go

@@ -4,10 +4,10 @@ import (
 	"hash/fnv"
 	"math"
 	"math/rand"
-	"strconv"
-	"time"
 	"net/http"
+	"strconv"
 	"strings"
+	"time"
 
 	"github.com/klauspost/cpuid/v2"
 )
@@ -18,6 +18,7 @@ func GetRandomizer() *rand.Rand {
 	fnvHash.Write([]byte(strconv.Itoa(cpuid.CPU.Family) + strconv.Itoa(cpuid.CPU.Model) + strconv.Itoa(cpuid.CPU.PhysicalCores) + strconv.Itoa(cpuid.CPU.LogicalCores) + strconv.Itoa(cpuid.CPU.CacheLine) + strconv.Itoa(cpuid.CPU.ThreadsPerCore)))
 	return rand.New(rand.NewSource(int64(fnvHash.Sum64())))
 }
+
 var globalRng *rand.Rand = GetRandomizer()
 
 // The Chrome version generator will suffer from deviation of a normal distribution.
@@ -26,83 +27,114 @@ func ChromeVersion() int {
 	var startVersion int = 144
 	var timeStart int64 = time.Date(2026, 1, 13, 0, 0, 0, 0, time.UTC).Unix() / 86400
 	var timeCurrent int64 = time.Now().Unix() / 86400
-	var timeDiff int = int((timeCurrent - timeStart - 35)) - int(math.Floor(math.Pow(globalRng.Float64(), 2) * 105))
+	var timeDiff int = int((timeCurrent - timeStart - 35)) - int(math.Floor(math.Pow(globalRng.Float64(), 2)*105))
 	return startVersion + (timeDiff / 35) // It's 31.15 currently.
 }
 
-var safariMinorMap [25]int = [25]int{0, 0, 0, 1, 1,
+var safariMinorMap [25]int = [25]int{
+	0, 0, 0, 1, 1,
 	1, 2, 2, 2, 2, 3, 3, 3, 4, 4,
-	4, 5, 5, 5, 5, 5, 6, 6, 6, 6}
+	4, 5, 5, 5, 5, 5, 6, 6, 6, 6,
+}
 
 // The following version generators use deterministic generators, but with the distribution scaled by a curve.
 func CurlVersion() string {
 	// curl 8.0.0 was released on 20/03/2023.
 	var timeCurrent int64 = time.Now().Unix() / 86400
 	var timeStart int64 = time.Date(2023, 3, 20, 0, 0, 0, 0, time.UTC).Unix() / 86400
-	var timeDiff int = int((timeCurrent - timeStart - 60)) - int(math.Floor(math.Pow(globalRng.Float64(), 2) * 165))
+	var timeDiff int = int((timeCurrent - timeStart - 60)) - int(math.Floor(math.Pow(globalRng.Float64(), 2)*165))
 	var minorValue int = int(timeDiff / 57) // The release cadence is actually 56.67 days.
 	return "8." + strconv.Itoa(minorValue) + ".0"
 }
+
 func FirefoxVersion() int {
 	// Firefox 128 ESR was released on 09/07/2023.
 	var timeCurrent int64 = time.Now().Unix() / 86400
 	var timeStart int64 = time.Date(2024, 7, 29, 0, 0, 0, 0, time.UTC).Unix() / 86400
-	var timeDiff = timeCurrent - timeStart - 25 - int64(math.Floor(math.Pow(globalRng.Float64(), 2) * 50))
-	return int(timeDiff / 30) + 128
+	timeDiff := timeCurrent - timeStart - 25 - int64(math.Floor(math.Pow(globalRng.Float64(), 2)*50))
+	return int(timeDiff/30) + 128
 }
+
 func SafariVersion() string {
 	var anchoredTime time.Time = time.Now()
 	var releaseYear int = anchoredTime.Year()
 	var splitPoint time.Time = time.Date(releaseYear, 9, 23, 0, 0, 0, 0, time.UTC)
-	var delayedDays = int(math.Floor(math.Pow(globalRng.Float64(), 3) * 75))
+	delayedDays := int(math.Floor(math.Pow(globalRng.Float64(), 3) * 75))
 	splitPoint = splitPoint.AddDate(0, 0, delayedDays)
-	if (anchoredTime.Compare(splitPoint) < 0) {
-		releaseYear --
+	if anchoredTime.Compare(splitPoint) < 0 {
+		releaseYear--
 		splitPoint = time.Date(releaseYear, 9, 23, 0, 0, 0, 0, time.UTC)
 		splitPoint = splitPoint.AddDate(0, 0, delayedDays)
 	}
-	var minorVersion = safariMinorMap[(anchoredTime.Unix() - splitPoint.Unix()) / 1296000]
-	return strconv.Itoa(releaseYear - 1999) + "." + strconv.Itoa(minorVersion)
+	minorVersion := safariMinorMap[(anchoredTime.Unix()-splitPoint.Unix())/1296000]
+	return strconv.Itoa(releaseYear-1999) + "." + strconv.Itoa(minorVersion)
 }
 
 // The full Chromium brand GREASE implementation
-var clientHintGreaseNA = []string{" ", "(", ":", "-", ".", "/", ")", ";", "=", "?", "_"}
-var clientHintVersionNA = []string{"8", "99", "24"}
-var clientHintShuffle3 = [][3]int{{0, 1, 2}, {0, 2, 1}, {1, 0, 2}, {1, 2, 0}, {2, 0, 1}, {2, 1, 0}}
-var clientHintShuffle4 = [][4]int{
-	{0, 1, 2, 3}, {0, 1, 3, 2}, {0, 2, 1, 3}, {0, 2, 3, 1}, {0, 3, 1, 2}, {0, 3, 2, 1},
-	{1, 0, 2, 3}, {1, 0, 3, 2}, {1, 2, 0, 3}, {1, 2, 3, 0}, {1, 3, 0, 2}, {1, 3, 2, 0},
-	{2, 0, 1, 3}, {2, 0, 3, 1}, {2, 1, 0, 3}, {2, 1, 3, 0}, {2, 3, 0, 1}, {2, 3, 1, 0},
-	{3, 0, 1, 2}, {3, 0, 2, 1}, {3, 1, 0, 2}, {3, 1, 2, 0}, {3, 2, 0, 1}, {3, 2, 1, 0}}
+var (
+	clientHintGreaseNA  = []string{" ", "(", ":", "-", ".", "/", ")", ";", "=", "?", "_"}
+	clientHintVersionNA = []string{"8", "99", "24"}
+	clientHintShuffle3  = [][3]int{{0, 1, 2}, {0, 2, 1}, {1, 0, 2}, {1, 2, 0}, {2, 0, 1}, {2, 1, 0}}
+	clientHintShuffle4  = [][4]int{
+		{0, 1, 2, 3},
+		{0, 1, 3, 2},
+		{0, 2, 1, 3},
+		{0, 2, 3, 1},
+		{0, 3, 1, 2},
+		{0, 3, 2, 1},
+		{1, 0, 2, 3},
+		{1, 0, 3, 2},
+		{1, 2, 0, 3},
+		{1, 2, 3, 0},
+		{1, 3, 0, 2},
+		{1, 3, 2, 0},
+		{2, 0, 1, 3},
+		{2, 0, 3, 1},
+		{2, 1, 0, 3},
+		{2, 1, 3, 0},
+		{2, 3, 0, 1},
+		{2, 3, 1, 0},
+		{3, 0, 1, 2},
+		{3, 0, 2, 1},
+		{3, 1, 0, 2},
+		{3, 1, 2, 0},
+		{3, 2, 0, 1},
+		{3, 2, 1, 0},
+	}
+)
+
 func getGreasedChInvalidBrand(seed int) string {
-	return "\"Not" + clientHintGreaseNA[seed % len(clientHintGreaseNA)] + "A" + clientHintGreaseNA[(seed + 1) % len(clientHintGreaseNA)] + "Brand\";v=\"" + clientHintVersionNA[seed % len(clientHintVersionNA)] + "\"";
+	return "\"Not" + clientHintGreaseNA[seed%len(clientHintGreaseNA)] + "A" + clientHintGreaseNA[(seed+1)%len(clientHintGreaseNA)] + "Brand\";v=\"" + clientHintVersionNA[seed%len(clientHintVersionNA)] + "\""
 }
+
 func getGreasedChOrder(brandLength int, seed int) []int {
 	switch brandLength {
-		case 1:
-			return []int{0}
-		case 2:
-			return []int{seed % brandLength, (seed + 1) % brandLength}
-		case 3:
-			return clientHintShuffle3[seed % len(clientHintShuffle3)][:]
-		default:
-			return clientHintShuffle4[seed % len(clientHintShuffle4)][:]
+	case 1:
+		return []int{0}
+	case 2:
+		return []int{seed % brandLength, (seed + 1) % brandLength}
+	case 3:
+		return clientHintShuffle3[seed%len(clientHintShuffle3)][:]
+	default:
+		return clientHintShuffle4[seed%len(clientHintShuffle4)][:]
 	}
 	//return []int{}
 }
+
 func getUngreasedChUa(majorVersion int, forkName string) []string {
 	// Set the capacity to 4, the maximum allowed brand size, so Go will never allocate memory twice
 	baseChUa := make([]string, 0, 4)
 	baseChUa = append(baseChUa, getGreasedChInvalidBrand(majorVersion),
-	"\"Chromium\";v=\"" + strconv.Itoa(majorVersion) + "\"")
+		"\"Chromium\";v=\""+strconv.Itoa(majorVersion)+"\"")
 	switch forkName {
 	case "chrome":
-		baseChUa = append(baseChUa, "\"Google Chrome\";v=\"" + strconv.Itoa(majorVersion) + "\"")
+		baseChUa = append(baseChUa, "\"Google Chrome\";v=\""+strconv.Itoa(majorVersion)+"\"")
 	case "edge":
-		baseChUa = append(baseChUa, "\"Microsoft Edge\";v=\"" + strconv.Itoa(majorVersion) + "\"")
+		baseChUa = append(baseChUa, "\"Microsoft Edge\";v=\""+strconv.Itoa(majorVersion)+"\"")
 	}
 	return baseChUa
 }
+
 func getGreasedChUa(majorVersion int, forkName string) string {
 	ungreasedCh := getUngreasedChUa(majorVersion, forkName)
 	shuffleMap := getGreasedChOrder(len(ungreasedCh), majorVersion)
@@ -114,16 +146,18 @@ func getGreasedChUa(majorVersion int, forkName string) string {
 }
 
 // The code below provides a coherent default browser user agent string based on a CPU-seeded PRNG.
-var CurlUA = "curl/" + CurlVersion()
-var AnchoredFirefoxVersion = strconv.Itoa(FirefoxVersion())
-var FirefoxUA = "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:" + AnchoredFirefoxVersion + ".0) Gecko/20100101 Firefox/" + AnchoredFirefoxVersion + ".0"
-var SafariUA = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/" + SafariVersion() + " Safari/605.1.15"
-// Chromium browsers.
-var AnchoredChromeVersion = ChromeVersion()
-var ChromeUA = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/" + strconv.Itoa(AnchoredChromeVersion) + ".0.0.0 Safari/537.36"
-var ChromeUACH = getGreasedChUa(AnchoredChromeVersion, "chrome")
-var MSEdgeUA = ChromeUA + "Edg/" + strconv.Itoa(AnchoredChromeVersion) + ".0.0.0"
-var MSEdgeUACH = getGreasedChUa(AnchoredChromeVersion, "edge")
+var (
+	CurlUA                 = "curl/" + CurlVersion()
+	AnchoredFirefoxVersion = strconv.Itoa(FirefoxVersion())
+	FirefoxUA              = "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:" + AnchoredFirefoxVersion + ".0) Gecko/20100101 Firefox/" + AnchoredFirefoxVersion + ".0"
+	SafariUA               = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/" + SafariVersion() + " Safari/605.1.15"
+	// Chromium browsers.
+	AnchoredChromeVersion = ChromeVersion()
+	ChromeUA              = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/" + strconv.Itoa(AnchoredChromeVersion) + ".0.0.0 Safari/537.36"
+	ChromeUACH            = getGreasedChUa(AnchoredChromeVersion, "chrome")
+	MSEdgeUA              = ChromeUA + "Edg/" + strconv.Itoa(AnchoredChromeVersion) + ".0.0.0"
+	MSEdgeUACH            = getGreasedChUa(AnchoredChromeVersion, "edge")
+)
 
 func applyMasqueradedHeaders(header http.Header, browser string, variant string) {
 	// Browser-specific.

common/utils/probe_routes.go

@@ -0,0 +1,73 @@
+package utils
+
+import (
+	"net"
+	"os"
+	"runtime"
+	"sync"
+	"time"
+)
+
+func probeRoutes() (ipv4 bool, ipv6 bool) {
+	if conn, err := net.Dial("udp4", "192.33.4.12:53"); err == nil {
+		ipv4 = true
+		conn.Close()
+	}
+	if conn, err := net.Dial("udp6", "[2001:500:2::c]:53"); err == nil {
+		ipv6 = true
+		conn.Close()
+	}
+	return
+}
+
+var routeCache struct {
+	sync.Once
+	sync.RWMutex
+	expire     time.Time
+	ipv4, ipv6 bool
+}
+
+func CheckRoutes() (bool, bool) {
+	if !isGUIPlatform {
+		routeCache.Once.Do(func() {
+			routeCache.ipv4, routeCache.ipv6 = probeRoutes()
+		})
+		return routeCache.ipv4, routeCache.ipv6
+	}
+
+	routeCache.RWMutex.RLock()
+	now := time.Now()
+	if routeCache.expire.After(now) {
+		routeCache.RWMutex.RUnlock()
+		return routeCache.ipv4, routeCache.ipv6
+	}
+	routeCache.RWMutex.RUnlock()
+
+	routeCache.RWMutex.Lock()
+	defer routeCache.RWMutex.Unlock()
+
+	now = time.Now()
+	if routeCache.expire.After(now) { // double-check
+		return routeCache.ipv4, routeCache.ipv6
+	}
+	routeCache.ipv4, routeCache.ipv6 = probeRoutes()    // ~2ms
+	routeCache.expire = now.Add(100 * time.Millisecond) // ttl
+	return routeCache.ipv4, routeCache.ipv6
+}
+
+var isGUIPlatform = detectGUIPlatform()
+
+func detectGUIPlatform() bool {
+	switch runtime.GOOS {
+	case "android", "ios", "windows", "darwin":
+		return true
+	case "linux", "freebsd", "openbsd":
+		if t := os.Getenv("XDG_SESSION_TYPE"); t == "wayland" || t == "x11" {
+			return true
+		}
+		if os.Getenv("DISPLAY") != "" || os.Getenv("WAYLAND_DISPLAY") != "" {
+			return true
+		}
+	}
+	return false
+}

common/utils/typed_sync_map.go

@@ -109,4 +109,4 @@ func (m *TypedSyncMap[K, V]) Swap(key K, value V) (previous V, loaded bool) {
 		previous = anyPrevious.(V)
 	}
 	return previous, loaded
-}
+}

common/utils/unixsocket.go

@@ -0,0 +1,54 @@
+package utils
+
+import (
+	"path/filepath"
+	"runtime"
+	"strings"
+	"syscall"
+)
+
+// ResolveSocketPath applies platform-specific transformations to a Unix
+// socket path, matching the listen-side behaviour in
+// transport/internet/system_listener.go.
+//
+// For abstract sockets (prefix @) on Linux/Android:
+//   - single @ — used as-is (lock-free abstract socket)
+//   - double @@ — stripped to single @ and padded to
+//     syscall.RawSockaddrUnix{}.Path length (HAProxy compat)
+//
+// Filesystem paths and abstract sockets on other platforms are returned
+// unchanged.
+func ResolveSocketPath(path string) string {
+	if len(path) == 0 || path[0] != '@' {
+		return path
+	}
+	if runtime.GOOS != "linux" && runtime.GOOS != "android" {
+		return path
+	}
+	if len(path) > 1 && path[1] == '@' {
+		fullAddr := make([]byte, len(syscall.RawSockaddrUnix{}.Path))
+		copy(fullAddr, path[1:])
+		return string(fullAddr)
+	}
+	return path
+}
+
+// SplitHTTPUnixURL splits a target into an HTTP URL and an optional Unix
+// socket path. For regular http(s) URLs the input is returned unchanged
+// with an empty socketPath. For Unix sockets the format is:
+//
+//	/path/to/socket.sock[:/http/path]
+//	@abstract[:/http/path]
+//	@@padded[:/http/path]
+//
+// The :/ separator delimits the socket path from the HTTP request path.
+// If omitted, "/" is used.
+func SplitHTTPUnixURL(raw string) (httpURL, socketPath string) {
+	if len(raw) == 0 || (!filepath.IsAbs(raw) && raw[0] != '@') {
+		return raw, ""
+	}
+	if idx := strings.Index(raw, ":/"); idx >= 0 {
+		return "http://localhost" + raw[idx+1:], raw[:idx]
+	}
+	return "http://localhost/", raw
+}

common/utils/weak_cache.go

@@ -0,0 +1,59 @@
+package utils
+
+import (
+	"maps"
+	"runtime"
+	"sync"
+	"weak"
+)
+
+// WeakCacheMap is a map that holds weak references to values.
+// Use for shared expensive objects and automatic cleanup when no longer used.
+// This object can be GC and no goroutine is used for cleanup.
+type WeakCacheMap[K comparable, V any] struct {
+	mu sync.Mutex
+	m  map[K]weak.Pointer[V]
+}
+
+func NewWeakCacheMap[K comparable, V any]() *WeakCacheMap[K, V] {
+	return &WeakCacheMap[K, V]{
+		m: make(map[K]weak.Pointer[V]),
+	}
+}
+
+func (c *WeakCacheMap[K, V]) Load(key K) (value *V, ok bool) {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+	weakPtr := c.m[key].Value()
+	if weakPtr != nil {
+		return weakPtr, true
+	}
+	return nil, false
+}
+
+func (c *WeakCacheMap[K, V]) Store(key K, value *V) {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+	weakPtr := weak.Make(value)
+	c.m[key] = weakPtr
+	runtime.AddCleanup(value, func(struct{}) {
+		c.mu.Lock()
+		defer c.mu.Unlock()
+		if c.m[key] == weakPtr {
+			delete(c.m, key)
+		}
+	}, struct{}{})
+}
+
+func (c *WeakCacheMap[K, V]) Range(f func(K, *V) bool) {
+	c.mu.Lock()
+	snapshot := maps.Clone(c.m)
+	c.mu.Unlock()
+	for k, v := range snapshot {
+		if value := v.Value(); value != nil {
+			if !f(k, value) {
+				break
+			}
+		}
+	}
+}