Improve read wait interface &

Refactor Authenticator interface to struct &
Update smux &
Update gVisor to 20231204.0 &
Update wireguard-go &
Add GSO support for TUN/WireGuard &
Fix router pre-start &
Fix bind forwarder to interface for systems stack

common/dialer/default.go

@@ -15,14 +15,17 @@ import (
 	N "github.com/sagernet/sing/common/network"
 )
 
+var _ WireGuardListener = (*DefaultDialer)(nil)
+
 type DefaultDialer struct {
-	dialer4     tcpDialer
-	dialer6     tcpDialer
-	udpDialer4  net.Dialer
-	udpDialer6  net.Dialer
-	udpListener net.ListenConfig
-	udpAddr4    string
-	udpAddr6    string
+	dialer4             tcpDialer
+	dialer6             tcpDialer
+	udpDialer4          net.Dialer
+	udpDialer6          net.Dialer
+	udpListener         net.ListenConfig
+	udpAddr4            string
+	udpAddr6            string
+	isWireGuardListener bool
 }
 
 func NewDefault(router adapter.Router, options option.DialerOptions) (*DefaultDialer, error) {
@@ -98,6 +101,11 @@ func NewDefault(router adapter.Router, options option.DialerOptions) (*DefaultDi
 		}
 		setMultiPathTCP(&dialer4)
 	}
+	if options.IsWireGuardListener {
+		for _, controlFn := range wgControlFns {
+			listener.Control = control.Append(listener.Control, controlFn)
+		}
+	}
 	tcpDialer4, err := newTCPDialer(dialer4, options.TCPFastOpen)
 	if err != nil {
 		return nil, err
@@ -114,6 +122,7 @@ func NewDefault(router adapter.Router, options option.DialerOptions) (*DefaultDi
 		listener,
 		udpAddr4,
 		udpAddr6,
+		options.IsWireGuardListener,
 	}, nil
 }
 
@@ -146,6 +155,10 @@ func (d *DefaultDialer) ListenPacket(ctx context.Context, destination M.Socksadd
 	}
 }
 
+func (d *DefaultDialer) ListenPacketCompat(network, address string) (net.PacketConn, error) {
+	return trackPacketConn(d.udpListener.ListenPacket(context.Background(), network, address))
+}
+
 func trackConn(conn net.Conn, err error) (net.Conn, error) {
 	if !conntrack.Enabled || err != nil {
 		return conn, err

common/dialer/dialer.go

@@ -6,15 +6,13 @@ import (
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/option"
 	"github.com/sagernet/sing-dns"
-	"github.com/sagernet/sing/common"
 	N "github.com/sagernet/sing/common/network"
 )
 
-func MustNew(router adapter.Router, options option.DialerOptions) N.Dialer {
-	return common.Must1(New(router, options))
-}
-
 func New(router adapter.Router, options option.DialerOptions) (N.Dialer, error) {
+	if options.IsWireGuardListener {
+		return NewDefault(router, options)
+	}
 	var (
 		dialer N.Dialer
 		err    error

common/dialer/wireguard.go

@@ -0,0 +1,9 @@
+package dialer
+
+import (
+	"net"
+)
+
+type WireGuardListener interface {
+	ListenPacketCompat(network, address string) (net.PacketConn, error)
+}

common/dialer/wireguard_control.go

@@ -0,0 +1,11 @@
+//go:build with_wireguard
+
+package dialer
+
+import (
+	"github.com/sagernet/wireguard-go/conn"
+)
+
+var _ WireGuardListener = (conn.Listener)(nil)
+
+var wgControlFns = conn.ControlFns

common/dialer/wiregurad_stub.go

@@ -0,0 +1,9 @@
+//go:build !with_wireguard
+
+package dialer
+
+import (
+	"github.com/sagernet/sing/common/control"
+)
+
+var wgControlFns []control.Func