chore: reopen tfo support on windows for golang1.23

maybe broken again when golang1.24 release

component/dialer/tfo.go

@@ -5,8 +5,12 @@ import (
 	"io"
 	"net"
 	"time"
+
+	"github.com/metacubex/tfo-go"
 )
 
+var DisableTFO = false
+
 type tfoConn struct {
 	net.Conn
 	closed bool
@@ -120,3 +124,16 @@ func (c *tfoConn) ReaderReplaceable() bool {
 func (c *tfoConn) WriterReplaceable() bool {
 	return c.Conn != nil
 }
+
+func dialTFO(ctx context.Context, netDialer net.Dialer, network, address string) (net.Conn, error) {
+	ctx, cancel := context.WithTimeout(context.Background(), DefaultTCPTimeout)
+	dialer := tfo.Dialer{Dialer: netDialer, DisableTFO: false}
+	return &tfoConn{
+		dialed: make(chan bool, 1),
+		cancel: cancel,
+		ctx:    ctx,
+		dialFn: func(ctx context.Context, earlyData []byte) (net.Conn, error) {
+			return dialer.DialContext(ctx, network, address, earlyData)
+		},
+	}, nil
+}

component/dialer/tfo_unix.go

@@ -1,25 +0,0 @@
-//go:build unix
-
-package dialer
-
-import (
-	"context"
-	"net"
-
-	"github.com/metacubex/tfo-go"
-)
-
-const DisableTFO = false
-
-func dialTFO(ctx context.Context, netDialer net.Dialer, network, address string) (net.Conn, error) {
-	ctx, cancel := context.WithTimeout(context.Background(), DefaultTCPTimeout)
-	dialer := tfo.Dialer{Dialer: netDialer, DisableTFO: false}
-	return &tfoConn{
-		dialed: make(chan bool, 1),
-		cancel: cancel,
-		ctx:    ctx,
-		dialFn: func(ctx context.Context, earlyData []byte) (net.Conn, error) {
-			return dialer.DialContext(ctx, network, address, earlyData)
-		},
-	}, nil
-}

component/dialer/tfo_windows.go

@@ -1,12 +1,11 @@
 package dialer
 
-import (
-	"context"
-	"net"
-)
+import "github.com/metacubex/mihomo/constant/features"
 
-const DisableTFO = true
-
-func dialTFO(ctx context.Context, netDialer net.Dialer, network, address string) (net.Conn, error) {
-	return netDialer.DialContext(ctx, network, address)
+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
+	}
 }