chore: disable tfo when lower than Windows 10.0.14393

MetaCubeX · May 12, 2024 · 3ae4014 · 3ae4014
1 parent a50339b
commit 3ae4014
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Showing 3 changed files with 14 additions and 1 deletion.
diff --git a/component/dialer/dialer.go b/component/dialer/dialer.go
@@ -164,7 +164,7 @@ func dialContext(ctx context.Context, network string, destination netip.Addr, po
 	if opt.mpTcp {
 		setMultiPathTCP(dialer)
 	}
-	if opt.tfo {
+	if opt.tfo && !DisableTFO {
 		return dialTFO(ctx, *dialer, network, address)
 	}
 	return dialer.DialContext(ctx, network, address)

diff --git a/component/dialer/tfo.go b/component/dialer/tfo.go
@@ -9,6 +9,8 @@ import (
 	"github.com/metacubex/tfo-go"
 )
 
+var DisableTFO = false
+
 type tfoConn struct {
 	net.Conn
 	closed bool

diff --git a/component/dialer/tfo_windows.go b/component/dialer/tfo_windows.go
@@ -0,0 +1,11 @@
+package dialer
+
+import "github.com/metacubex/mihomo/constant/features"
+
+func init() {
+	// According to MSDN, this option is available since Windows 10, 1607
+	// https://msdn.microsoft.com/en-us/library/windows/desktop/ms738596(v=vs.85).aspx
+	if features.WindowsMajorVersion < 10 || (features.WindowsMajorVersion == 10 && features.WindowsBuildNumber < 14393) {
+		DisableTFO = true
+	}
+}