From fc50392ec797ccd5054effaee444ebd22304094d Mon Sep 17 00:00:00 2001
From: wwqgtxx <wwqgtxx@gmail.com>
Date: Sat, 18 Feb 2023 13:16:07 +0800
Subject: [PATCH] chore: cleanup natTable's api

---
 constant/adapters.go            |  4 ----
 constant/listener.go            |  2 +-
 hub/executor/executor.go        |  8 +++++---
 hub/route/configs.go            |  5 +++--
 listener/inbound/base.go        |  2 +-
 listener/inbound/http.go        |  2 +-
 listener/inbound/mixed.go       |  2 +-
 listener/inbound/redir.go       |  2 +-
 listener/inbound/shadowsocks.go |  2 +-
 listener/inbound/socks.go       |  2 +-
 listener/inbound/tproxy.go      |  4 ++--
 listener/inbound/tuic.go        |  2 +-
 listener/inbound/tun.go         |  2 +-
 listener/inbound/tunnel.go      |  2 +-
 listener/inbound/vmess.go       |  2 +-
 listener/listener.go            | 12 ++++++------
 listener/shadowsocks/utils.go   |  8 --------
 listener/socks/utils.go         |  9 ---------
 listener/tproxy/packet.go       | 20 ++++++--------------
 listener/tproxy/udp.go          | 14 ++++++++------
 listener/tunnel/packet.go       |  9 ---------
 transport/tuic/server.go        |  8 --------
 tunnel/connection.go            |  2 +-
 tunnel/tunnel.go                |  7 +++++--
 24 files changed, 47 insertions(+), 85 deletions(-)

diff --git a/constant/adapters.go b/constant/adapters.go
index 879ee6d7..bf5f7fdb 100644
--- a/constant/adapters.go
+++ b/constant/adapters.go
@@ -217,10 +217,6 @@ type UDPPacket interface {
 
 	// LocalAddr returns the source IP/Port of packet
 	LocalAddr() net.Addr
-
-	SetNatTable(natTable NatTable)
-
-	SetUdpInChan(in chan<- PacketAdapter)
 }
 
 type UDPPacketInAddr interface {
diff --git a/constant/listener.go b/constant/listener.go
index a52c1946..6f9f169b 100644
--- a/constant/listener.go
+++ b/constant/listener.go
@@ -16,7 +16,7 @@ type MultiAddrListener interface {
 
 type InboundListener interface {
 	Name() string
-	Listen(tcpIn chan<- ConnContext, udpIn chan<- PacketAdapter) error
+	Listen(tcpIn chan<- ConnContext, udpIn chan<- PacketAdapter, natTable NatTable) error
 	Close() error
 	Address() string
 	RawAddress() string
diff --git a/hub/executor/executor.go b/hub/executor/executor.go
index d88e91dc..b3e33f98 100644
--- a/hub/executor/executor.go
+++ b/hub/executor/executor.go
@@ -137,8 +137,9 @@ func GetGeneral() *config.General {
 func updateListeners(listeners map[string]C.InboundListener) {
 	tcpIn := tunnel.TCPIn()
 	udpIn := tunnel.UDPIn()
+	natTable := tunnel.NatTable()
 
-	listener.PatchInboundListeners(listeners, tcpIn, udpIn, true)
+	listener.PatchInboundListeners(listeners, tcpIn, udpIn, natTable, true)
 }
 
 func updateExperimental(c *config.Config) {
@@ -348,12 +349,13 @@ func updateGeneral(general *config.General, force bool) {
 
 	tcpIn := tunnel.TCPIn()
 	udpIn := tunnel.UDPIn()
+	natTable := tunnel.NatTable()
 
 	listener.ReCreateHTTP(general.Port, tcpIn)
 	listener.ReCreateSocks(general.SocksPort, tcpIn, udpIn)
-	listener.ReCreateRedir(general.RedirPort, tcpIn, udpIn)
+	listener.ReCreateRedir(general.RedirPort, tcpIn, udpIn, natTable)
 	listener.ReCreateAutoRedir(general.EBpf.AutoRedir, tcpIn, udpIn)
-	listener.ReCreateTProxy(general.TProxyPort, tcpIn, udpIn)
+	listener.ReCreateTProxy(general.TProxyPort, tcpIn, udpIn, natTable)
 	listener.ReCreateMixed(general.MixedPort, tcpIn, udpIn)
 	listener.ReCreateShadowSocks(general.ShadowSocksConfig, tcpIn, udpIn)
 	listener.ReCreateVmess(general.VmessConfig, tcpIn, udpIn)
diff --git a/hub/route/configs.go b/hub/route/configs.go
index 5047c6d6..9e630b29 100644
--- a/hub/route/configs.go
+++ b/hub/route/configs.go
@@ -239,11 +239,12 @@ func patchConfigs(w http.ResponseWriter, r *http.Request) {
 
 	tcpIn := tunnel.TCPIn()
 	udpIn := tunnel.UDPIn()
+	natTable := tunnel.NatTable()
 
 	P.ReCreateHTTP(pointerOrDefault(general.Port, ports.Port), tcpIn)
 	P.ReCreateSocks(pointerOrDefault(general.SocksPort, ports.SocksPort), tcpIn, udpIn)
-	P.ReCreateRedir(pointerOrDefault(general.RedirPort, ports.RedirPort), tcpIn, udpIn)
-	P.ReCreateTProxy(pointerOrDefault(general.TProxyPort, ports.TProxyPort), tcpIn, udpIn)
+	P.ReCreateRedir(pointerOrDefault(general.RedirPort, ports.RedirPort), tcpIn, udpIn, natTable)
+	P.ReCreateTProxy(pointerOrDefault(general.TProxyPort, ports.TProxyPort), tcpIn, udpIn, natTable)
 	P.ReCreateMixed(pointerOrDefault(general.MixedPort, ports.MixedPort), tcpIn, udpIn)
 	P.ReCreateTun(pointerOrDefaultTun(general.Tun, P.LastTunConf), tcpIn, udpIn)
 	P.ReCreateShadowSocks(pointerOrDefaultString(general.ShadowSocksConfig, ports.ShadowSocksConfig), tcpIn, udpIn)
diff --git a/listener/inbound/base.go b/listener/inbound/base.go
index 41be5b10..b132ac6c 100644
--- a/listener/inbound/base.go
+++ b/listener/inbound/base.go
@@ -61,7 +61,7 @@ func (b *Base) RawAddress() string {
 }
 
 // Listen implements constant.InboundListener
-func (*Base) Listen(tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter) error {
+func (*Base) Listen(tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter, natTable C.NatTable) error {
 	return nil
 }
 
diff --git a/listener/inbound/http.go b/listener/inbound/http.go
index b19f0154..a93f9684 100644
--- a/listener/inbound/http.go
+++ b/listener/inbound/http.go
@@ -42,7 +42,7 @@ func (h *HTTP) Address() string {
 }
 
 // Listen implements constant.InboundListener
-func (h *HTTP) Listen(tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter) error {
+func (h *HTTP) Listen(tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter, natTable C.NatTable) error {
 	var err error
 	h.l, err = http.New(h.RawAddress(), tcpIn, h.Additions()...)
 	if err != nil {
diff --git a/listener/inbound/mixed.go b/listener/inbound/mixed.go
index a2920c69..dbba264c 100644
--- a/listener/inbound/mixed.go
+++ b/listener/inbound/mixed.go
@@ -50,7 +50,7 @@ func (m *Mixed) Address() string {
 }
 
 // Listen implements constant.InboundListener
-func (m *Mixed) Listen(tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter) error {
+func (m *Mixed) Listen(tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter, natTable C.NatTable) error {
 	var err error
 	m.l, err = mixed.New(m.RawAddress(), tcpIn, m.Additions()...)
 	if err != nil {
diff --git a/listener/inbound/redir.go b/listener/inbound/redir.go
index 7a1685ba..4b88d895 100644
--- a/listener/inbound/redir.go
+++ b/listener/inbound/redir.go
@@ -42,7 +42,7 @@ func (r *Redir) Address() string {
 }
 
 // Listen implements constant.InboundListener
-func (r *Redir) Listen(tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter) error {
+func (r *Redir) Listen(tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter, natTable C.NatTable) error {
 	var err error
 	r.l, err = redir.New(r.RawAddress(), tcpIn, r.Additions()...)
 	if err != nil {
diff --git a/listener/inbound/shadowsocks.go b/listener/inbound/shadowsocks.go
index e6baa80c..40907485 100644
--- a/listener/inbound/shadowsocks.go
+++ b/listener/inbound/shadowsocks.go
@@ -57,7 +57,7 @@ func (s *ShadowSocks) Address() string {
 }
 
 // Listen implements constant.InboundListener
-func (s *ShadowSocks) Listen(tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter) error {
+func (s *ShadowSocks) Listen(tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter, natTable C.NatTable) error {
 	var err error
 	s.l, err = sing_shadowsocks.New(s.ss, tcpIn, udpIn, s.Additions()...)
 	if err != nil {
diff --git a/listener/inbound/socks.go b/listener/inbound/socks.go
index 010d08f9..aac2ee23 100644
--- a/listener/inbound/socks.go
+++ b/listener/inbound/socks.go
@@ -68,7 +68,7 @@ func (s *Socks) Address() string {
 }
 
 // Listen implements constant.InboundListener
-func (s *Socks) Listen(tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter) error {
+func (s *Socks) Listen(tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter, natTable C.NatTable) error {
 	var err error
 	if s.stl, err = socks.New(s.RawAddress(), tcpIn, s.Additions()...); err != nil {
 		return err
diff --git a/listener/inbound/tproxy.go b/listener/inbound/tproxy.go
index 7aa8af8d..fa458d2c 100644
--- a/listener/inbound/tproxy.go
+++ b/listener/inbound/tproxy.go
@@ -49,7 +49,7 @@ func (t *TProxy) Address() string {
 }
 
 // Listen implements constant.InboundListener
-func (t *TProxy) Listen(tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter) error {
+func (t *TProxy) Listen(tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter, natTable C.NatTable) error {
 	var err error
 	t.lTCP, err = tproxy.New(t.RawAddress(), tcpIn, t.Additions()...)
 	if err != nil {
@@ -57,7 +57,7 @@ func (t *TProxy) Listen(tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter
 	}
 	if t.udp {
 		if t.lUDP != nil {
-			t.lUDP, err = tproxy.NewUDP(t.RawAddress(), udpIn, t.Additions()...)
+			t.lUDP, err = tproxy.NewUDP(t.RawAddress(), udpIn, natTable, t.Additions()...)
 			if err != nil {
 				return err
 			}
diff --git a/listener/inbound/tuic.go b/listener/inbound/tuic.go
index c74f73f6..f6641500 100644
--- a/listener/inbound/tuic.go
+++ b/listener/inbound/tuic.go
@@ -69,7 +69,7 @@ func (t *Tuic) Address() string {
 }
 
 // Listen implements constant.InboundListener
-func (t *Tuic) Listen(tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter) error {
+func (t *Tuic) Listen(tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter, natTable C.NatTable) error {
 	var err error
 	t.l, err = tuic.New(t.ts, tcpIn, udpIn, t.Additions()...)
 	if err != nil {
diff --git a/listener/inbound/tun.go b/listener/inbound/tun.go
index 997164c2..ad215989 100644
--- a/listener/inbound/tun.go
+++ b/listener/inbound/tun.go
@@ -111,7 +111,7 @@ func (t *Tun) Address() string {
 }
 
 // Listen implements constant.InboundListener
-func (t *Tun) Listen(tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter) error {
+func (t *Tun) Listen(tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter, natTable C.NatTable) error {
 	var err error
 	t.l, err = sing_tun.New(t.tun, tcpIn, udpIn, t.Additions()...)
 	if err != nil {
diff --git a/listener/inbound/tunnel.go b/listener/inbound/tunnel.go
index 221f4cd6..41d024ef 100644
--- a/listener/inbound/tunnel.go
+++ b/listener/inbound/tunnel.go
@@ -74,7 +74,7 @@ func (t *Tunnel) Address() string {
 }
 
 // Listen implements constant.InboundListener
-func (t *Tunnel) Listen(tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter) error {
+func (t *Tunnel) Listen(tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter, natTable C.NatTable) error {
 	var err error
 	for _, network := range t.config.Network {
 		switch network {
diff --git a/listener/inbound/vmess.go b/listener/inbound/vmess.go
index 130e17c5..70e840a5 100644
--- a/listener/inbound/vmess.go
+++ b/listener/inbound/vmess.go
@@ -69,7 +69,7 @@ func (v *Vmess) Address() string {
 }
 
 // Listen implements constant.InboundListener
-func (v *Vmess) Listen(tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter) error {
+func (v *Vmess) Listen(tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter, natTable C.NatTable) error {
 	var err error
 	users := make([]LC.VmessUser, len(v.config.Users))
 	for i, v := range v.config.Users {
diff --git a/listener/listener.go b/listener/listener.go
index d747d5f5..d8eb5c0c 100644
--- a/listener/listener.go
+++ b/listener/listener.go
@@ -207,7 +207,7 @@ func ReCreateSocks(port int, tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAd
 	log.Infoln("SOCKS proxy listening at: %s", socksListener.Address())
 }
 
-func ReCreateRedir(port int, tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter) {
+func ReCreateRedir(port int, tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter, natTable C.NatTable) {
 	redirMux.Lock()
 	defer redirMux.Unlock()
 
@@ -245,7 +245,7 @@ func ReCreateRedir(port int, tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAd
 		return
 	}
 
-	redirUDPListener, err = tproxy.NewUDP(addr, udpIn)
+	redirUDPListener, err = tproxy.NewUDP(addr, udpIn, natTable)
 	if err != nil {
 		log.Warnln("Failed to start Redir UDP Listener: %s", err)
 	}
@@ -403,7 +403,7 @@ func ReCreateTuic(config LC.TuicServer, tcpIn chan<- C.ConnContext, udpIn chan<-
 	return
 }
 
-func ReCreateTProxy(port int, tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter) {
+func ReCreateTProxy(port int, tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter, natTable C.NatTable) {
 	tproxyMux.Lock()
 	defer tproxyMux.Unlock()
 
@@ -441,7 +441,7 @@ func ReCreateTProxy(port int, tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketA
 		return
 	}
 
-	tproxyUDPListener, err = tproxy.NewUDP(addr, udpIn)
+	tproxyUDPListener, err = tproxy.NewUDP(addr, udpIn, natTable)
 	if err != nil {
 		log.Warnln("Failed to start TProxy UDP Listener: %s", err)
 	}
@@ -719,7 +719,7 @@ func PatchTunnel(tunnels []LC.Tunnel, tcpIn chan<- C.ConnContext, udpIn chan<- C
 	}
 }
 
-func PatchInboundListeners(newListenerMap map[string]C.InboundListener, tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter, dropOld bool) {
+func PatchInboundListeners(newListenerMap map[string]C.InboundListener, tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter, natTable C.NatTable, dropOld bool) {
 	inboundMux.Lock()
 	defer inboundMux.Unlock()
 
@@ -731,7 +731,7 @@ func PatchInboundListeners(newListenerMap map[string]C.InboundListener, tcpIn ch
 				continue
 			}
 		}
-		if err := newListener.Listen(tcpIn, udpIn); err != nil {
+		if err := newListener.Listen(tcpIn, udpIn, natTable); err != nil {
 			log.Errorln("Listener %s listen err: %s", name, err.Error())
 			continue
 		}
diff --git a/listener/shadowsocks/utils.go b/listener/shadowsocks/utils.go
index eee5660a..2e9fd003 100644
--- a/listener/shadowsocks/utils.go
+++ b/listener/shadowsocks/utils.go
@@ -7,7 +7,6 @@ import (
 	"net/url"
 
 	"github.com/Dreamacro/clash/common/pool"
-	C "github.com/Dreamacro/clash/constant"
 	"github.com/Dreamacro/clash/transport/socks5"
 )
 
@@ -45,13 +44,6 @@ func (c *packet) InAddr() net.Addr {
 	return c.pc.LocalAddr()
 }
 
-func (c *packet) SetNatTable(natTable C.NatTable) {
-	// no need
-}
-
-func (c *packet) SetUdpInChan(in chan<- C.PacketAdapter) {
-	// no need
-}
 func ParseSSURL(s string) (addr, cipher, password string, err error) {
 	u, err := url.Parse(s)
 	if err != nil {
diff --git a/listener/socks/utils.go b/listener/socks/utils.go
index 29898fda..4c53b9e5 100644
--- a/listener/socks/utils.go
+++ b/listener/socks/utils.go
@@ -4,7 +4,6 @@ import (
 	"net"
 
 	"github.com/Dreamacro/clash/common/pool"
-	C "github.com/Dreamacro/clash/constant"
 	"github.com/Dreamacro/clash/transport/socks5"
 )
 
@@ -40,11 +39,3 @@ func (c *packet) Drop() {
 func (c *packet) InAddr() net.Addr {
 	return c.pc.LocalAddr()
 }
-
-func (c *packet) SetNatTable(natTable C.NatTable) {
-	// no need
-}
-
-func (c *packet) SetUdpInChan(in chan<- C.PacketAdapter) {
-	// no need
-}
diff --git a/listener/tproxy/packet.go b/listener/tproxy/packet.go
index d66fac51..e3a20414 100644
--- a/listener/tproxy/packet.go
+++ b/listener/tproxy/packet.go
@@ -15,8 +15,8 @@ type packet struct {
 	pc       net.PacketConn
 	lAddr    netip.AddrPort
 	buf      []byte
-	natTable C.NatTable
 	in       chan<- C.PacketAdapter
+	natTable C.NatTable
 }
 
 func (c *packet) Data() []byte {
@@ -25,7 +25,7 @@ func (c *packet) Data() []byte {
 
 // WriteBack opens a new socket binding `addr` to write UDP packet back
 func (c *packet) WriteBack(b []byte, addr net.Addr) (n int, err error) {
-	tc, err := createOrGetLocalConn(addr, c.LocalAddr(), c.natTable, c.in)
+	tc, err := createOrGetLocalConn(addr, c.LocalAddr(), c.in, c.natTable)
 	if err != nil {
 		n = 0
 		return
@@ -47,18 +47,10 @@ func (c *packet) InAddr() net.Addr {
 	return c.pc.LocalAddr()
 }
 
-func (c *packet) SetNatTable(natTable C.NatTable) {
-	c.natTable = natTable
-}
-
-func (c *packet) SetUdpInChan(in chan<- C.PacketAdapter) {
-	c.in = in
-}
-
 // this function listen at rAddr and write to lAddr
 // for here, rAddr is the ip/port client want to access
 // lAddr is the ip/port client opened
-func createOrGetLocalConn(rAddr, lAddr net.Addr, natTable C.NatTable, in chan<- C.PacketAdapter) (*net.UDPConn, error) {
+func createOrGetLocalConn(rAddr, lAddr net.Addr, in chan<- C.PacketAdapter, natTable C.NatTable) (*net.UDPConn, error) {
 	remote := rAddr.String()
 	local := lAddr.String()
 	localConn := natTable.GetLocalConn(local, remote)
@@ -83,7 +75,7 @@ func createOrGetLocalConn(rAddr, lAddr net.Addr, natTable C.NatTable, in chan<-
 				natTable.DeleteLocalConnMap(local, lockKey)
 				cond.Broadcast()
 			}()
-			conn, err := listenLocalConn(rAddr, lAddr, in)
+			conn, err := listenLocalConn(rAddr, lAddr, in, natTable)
 			if err != nil {
 				log.Errorln("listenLocalConn failed with error: %s, packet loss", err.Error())
 				return nil, err
@@ -97,7 +89,7 @@ func createOrGetLocalConn(rAddr, lAddr net.Addr, natTable C.NatTable, in chan<-
 
 // this function listen at rAddr
 // and send what received to program itself, then send to real remote
-func listenLocalConn(rAddr, lAddr net.Addr, in chan<- C.PacketAdapter) (*net.UDPConn, error) {
+func listenLocalConn(rAddr, lAddr net.Addr, in chan<- C.PacketAdapter, natTable C.NatTable) (*net.UDPConn, error) {
 	additions := []inbound.Addition{
 		inbound.WithInName("DEFAULT-TPROXY"),
 		inbound.WithSpecialRules(""),
@@ -120,7 +112,7 @@ func listenLocalConn(rAddr, lAddr net.Addr, in chan<- C.PacketAdapter) (*net.UDP
 			}
 			// since following localPackets are pass through this socket which listen rAddr
 			// I choose current listener as packet's packet conn
-			handlePacketConn(lc, in, buf[:br], lAddr.(*net.UDPAddr).AddrPort(), rAddr.(*net.UDPAddr).AddrPort(), additions...)
+			handlePacketConn(lc, in, natTable, buf[:br], lAddr.(*net.UDPAddr).AddrPort(), rAddr.(*net.UDPAddr).AddrPort(), additions...)
 		}
 	}()
 	return lc, nil
diff --git a/listener/tproxy/udp.go b/listener/tproxy/udp.go
index f85c9ea9..d3727180 100644
--- a/listener/tproxy/udp.go
+++ b/listener/tproxy/udp.go
@@ -32,7 +32,7 @@ func (l *UDPListener) Close() error {
 	return l.packetConn.Close()
 }
 
-func NewUDP(addr string, in chan<- C.PacketAdapter, additions ...inbound.Addition) (*UDPListener, error) {
+func NewUDP(addr string, in chan<- C.PacketAdapter, natTable C.NatTable, additions ...inbound.Addition) (*UDPListener, error) {
 	if len(additions) == 0 {
 		additions = []inbound.Addition{
 			inbound.WithInName("DEFAULT-TPROXY"),
@@ -83,19 +83,21 @@ func NewUDP(addr string, in chan<- C.PacketAdapter, additions ...inbound.Additio
 				// try to unmap 4in6 address
 				lAddr = netip.AddrPortFrom(lAddr.Addr().Unmap(), lAddr.Port())
 			}
-			handlePacketConn(l, in, buf[:n], lAddr, rAddr, additions...)
+			handlePacketConn(l, in, natTable, buf[:n], lAddr, rAddr, additions...)
 		}
 	}()
 
 	return rl, nil
 }
 
-func handlePacketConn(pc net.PacketConn, in chan<- C.PacketAdapter, buf []byte, lAddr, rAddr netip.AddrPort, additions ...inbound.Addition) {
+func handlePacketConn(pc net.PacketConn, in chan<- C.PacketAdapter, natTable C.NatTable, buf []byte, lAddr, rAddr netip.AddrPort, additions ...inbound.Addition) {
 	target := socks5.AddrFromStdAddrPort(rAddr)
 	pkt := &packet{
-		pc:    pc,
-		lAddr: lAddr,
-		buf:   buf,
+		pc:       pc,
+		lAddr:    lAddr,
+		buf:      buf,
+		in:       in,
+		natTable: natTable,
 	}
 	select {
 	case in <- inbound.NewPacket(target, pkt, C.TPROXY, additions...):
diff --git a/listener/tunnel/packet.go b/listener/tunnel/packet.go
index fa85879f..602f7675 100644
--- a/listener/tunnel/packet.go
+++ b/listener/tunnel/packet.go
@@ -4,7 +4,6 @@ import (
 	"net"
 
 	"github.com/Dreamacro/clash/common/pool"
-	C "github.com/Dreamacro/clash/constant"
 )
 
 type packet struct {
@@ -34,11 +33,3 @@ func (c *packet) Drop() {
 func (c *packet) InAddr() net.Addr {
 	return c.pc.LocalAddr()
 }
-
-func (c *packet) SetNatTable(natTable C.NatTable) {
-	// no need
-}
-
-func (c *packet) SetUdpInChan(in chan<- C.PacketAdapter) {
-	// no need
-}
diff --git a/transport/tuic/server.go b/transport/tuic/server.go
index fdea899d..2830b324 100644
--- a/transport/tuic/server.go
+++ b/transport/tuic/server.go
@@ -316,13 +316,5 @@ func (s *serverUDPPacket) Drop() {
 	s.packet.DATA = nil
 }
 
-func (s *serverUDPPacket) SetNatTable(natTable C.NatTable) {
-	// no need
-}
-
-func (s *serverUDPPacket) SetUdpInChan(in chan<- C.PacketAdapter) {
-	// no need
-}
-
 var _ C.UDPPacket = &serverUDPPacket{}
 var _ C.UDPPacketInAddr = &serverUDPPacket{}
diff --git a/tunnel/connection.go b/tunnel/connection.go
index 687b2887..bd8d1b63 100644
--- a/tunnel/connection.go
+++ b/tunnel/connection.go
@@ -2,7 +2,6 @@ package tunnel
 
 import (
 	"errors"
-	"github.com/Dreamacro/clash/log"
 	"net"
 	"net/netip"
 	"time"
@@ -10,6 +9,7 @@ import (
 	N "github.com/Dreamacro/clash/common/net"
 	"github.com/Dreamacro/clash/common/pool"
 	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/log"
 )
 
 func handleUDPToRemote(packet C.UDPPacket, pc C.PacketConn, metadata *C.Metadata) error {
diff --git a/tunnel/tunnel.go b/tunnel/tunnel.go
index 5c3814bc..695f2945 100644
--- a/tunnel/tunnel.go
+++ b/tunnel/tunnel.go
@@ -82,6 +82,11 @@ func UDPIn() chan<- C.PacketAdapter {
 	return udpQueue
 }
 
+// NatTable return nat table
+func NatTable() C.NatTable {
+	return natTable
+}
+
 // Rules return all rules
 func Rules() []C.Rule {
 	return rules
@@ -338,8 +343,6 @@ func handleUDPConn(packet C.PacketAdapter) {
 
 		oAddr := metadata.DstIP
 		natTable.Set(key, pc)
-		packet.SetNatTable(natTable)
-		packet.SetUdpInChan(udpQueue)
 
 		go handleUDPToLocal(packet, pc, key, oAddr, fAddr)