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common/buf/readv_windows.go: Fix raw WSARecv blocking thread and preventing connection close (#6743)

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https://github.com/XTLS/Xray-core/pull/6743#issuecomment-5647971870

---------

Co-authored-by: 风扇滑翔翼 <Fangliding.fshxy@outlook.com>
This commit is contained in:
Kiang
2026-09-12 19:51:59 +00:00
committed by GitHub
co-authored by 风扇滑翔翼
parent 52a412d9e2
commit ccb69ea5e2
1 changed files with 11 additions and 1 deletions
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common/buf/readv_windows.go
+11 -1
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@@ -5,7 +5,8 @@ import (
)
type windowsReader struct {
bufs []syscall.WSABuf
bufs []syscall.WSABuf
ready bool
}
func (r *windowsReader) Init(bs []*Buffer) {
@@ -15,6 +16,7 @@ func (r *windowsReader) Init(bs []*Buffer) {
for _, b := range bs {
r.bufs = append(r.bufs, syscall.WSABuf{Len: uint32(Size), Buf: &b.v[0]})
}
r.ready = false
}
func (r *windowsReader) Clear() {
@@ -25,6 +27,14 @@ func (r *windowsReader) Clear() {
}
func (r *windowsReader) Read(fd uintptr) int32 {
// On the first invocation, we return -1 to indicate "not ready"
// to make rawConn.Read wait for readability using the runtime's own mechanism
// because syscall.WSARecv() is a blocking call when used with nil OVERLAPPED
if !r.ready {
r.ready = true
return -1
}
var nBytes uint32
var flags uint32
err := syscall.WSARecv(syscall.Handle(fd), &r.bufs[0], uint32(len(r.bufs)), &nBytes, &flags, nil, nil)