diff --git a/dial.go b/dial.go
index b970aff..bbfd0b9 100644
--- a/dial.go
+++ b/dial.go
@@ -388,13 +388,7 @@ func (obj *Dialer) verifyUDPSocks5(ctx *Response, conn net.Conn, proxyAddr Addre
 	if err != nil {
 		return
 	}
-	var cnl context.CancelFunc
-	udpCtx, cnl := context.WithCancel(context.TODO())
-	wrapConn = NewUDPConn(udpCtx, wrapConn, &net.UDPAddr{IP: proxyAddress.IP, Port: proxyAddress.Port}, remoteAddr)
-	go func() {
-		tools.Copy(io.Discard, conn)
-		cnl()
-	}()
+	wrapConn = NewUDPConn(conn, wrapConn, &net.UDPAddr{IP: proxyAddress.IP, Port: proxyAddress.Port}, remoteAddr)
 	return
 }
 func (obj *Dialer) writeCmd(conn net.Conn, network string) (err error) {
diff --git a/roundTripper.go b/roundTripper.go
index 232d839..ca0d575 100644
--- a/roundTripper.go
+++ b/roundTripper.go
@@ -148,13 +148,13 @@ func (obj *roundTripper) ghttp3Dial(ctx *Response, remoteAddress Address, proxyA
 	}
 
 	conn = obj.newConnecotr()
-	conn.Conn, err = http3.NewClient(netConn, func() {
+	conn.Conn, err = http3.NewClient(netConn, udpConn, func() {
 		conn.forceCnl(errors.New("http3 client close"))
 	})
 	if ct, ok := udpConn.(interface {
-		Context() context.Context
+		SetTcpCloseFunc(f func(error))
 	}); ok {
-		context.AfterFunc(ct.Context(), func() {
+		ct.SetTcpCloseFunc(func(err error) {
 			conn.forceCnl(errors.New("http3 client close with udp"))
 		})
 	}
@@ -193,14 +193,14 @@ func (obj *roundTripper) uhttp3Dial(ctx *Response, remoteAddress Address, proxyA
 		return nil, err
 	}
 	conn = obj.newConnecotr()
-	conn.Conn, err = http3.NewClient(netConn, func() {
+	conn.Conn, err = http3.NewClient(netConn, udpConn, func() {
 		conn.forceCnl(errors.New("http3 client close"))
 	})
 	if ct, ok := udpConn.(interface {
-		Context() context.Context
+		SetTcpCloseFunc(f func(error))
 	}); ok {
-		context.AfterFunc(ct.Context(), func() {
-			conn.forceCnl(errors.New("http3 client close with udp"))
+		ct.SetTcpCloseFunc(func(err error) {
+			conn.forceCnl(errors.New("uhttp3 client close with udp"))
 		})
 	}
 	return
@@ -459,6 +459,7 @@ func (obj *roundTripper) RoundTrip(ctx *Response) (err error) {
 			return err
 		}
 		err = obj.poolRoundTrip(task)
+		// log.Print(err)
 		if err == nil || !task.suppertRetry() {
 			break
 		}
diff --git a/socks5.go b/socks5.go
index 809e1e0..bf2da76 100644
--- a/socks5.go
+++ b/socks5.go
@@ -2,13 +2,14 @@ package requests
 
 import (
 	"bytes"
-	"context"
 	"encoding/binary"
 	"errors"
 	"io"
 	"math"
 	"net"
 	"strconv"
+
+	"github.com/gospider007/tools"
 )
 
 const MaxUdpPacket int = math.MaxUint16 - 28
@@ -93,23 +94,31 @@ func (a Address) IsZero() bool {
 }
 
 type UDPConn struct {
-	ctx context.Context
 	net.PacketConn
+	tcpConn       net.Conn
 	prefix        []byte
 	bufRead       [MaxUdpPacket]byte
 	bufWrite      [MaxUdpPacket]byte
 	proxyAddress  net.Addr
 	remoteAddress Address
+	tcpCloseFunc  func(error)
 }
 
-func NewUDPConn(ctx context.Context, packConn net.PacketConn, proxyAddress net.Addr, remoteAddress Address) *UDPConn {
-	return &UDPConn{
-		ctx:           ctx,
+func NewUDPConn(tcpConn net.Conn, packConn net.PacketConn, proxyAddress net.Addr, remoteAddress Address) *UDPConn {
+	ucon := &UDPConn{
+		tcpConn:       tcpConn,
 		remoteAddress: remoteAddress,
 		PacketConn:    packConn,
 		proxyAddress:  proxyAddress,
 		prefix:        []byte{0, 0, 0},
 	}
+	go func() {
+		_, err := tools.Copy(io.Discard, tcpConn)
+		if ucon.tcpCloseFunc != nil {
+			ucon.tcpCloseFunc(err)
+		}
+	}()
+	return ucon
 }
 
 func (c *UDPConn) ReadFrom(p []byte) (n int, addr net.Addr, err error) {
@@ -153,6 +162,10 @@ func (c *UDPConn) SetReadBuffer(i int) error {
 func (c *UDPConn) SetWriteBuffer(i int) error {
 	return c.PacketConn.(*net.UDPConn).SetWriteBuffer(i)
 }
-func (c *UDPConn) Context() context.Context {
-	return c.ctx
+func (c *UDPConn) SetTcpCloseFunc(f func(error)) {
+	c.tcpCloseFunc = f
+}
+func (c *UDPConn) Close() error {
+	c.tcpConn.Close()
+	return c.PacketConn.Close()
 }
diff --git a/test/proxy/http3_proxy_test.go b/test/proxy/http3_proxy_test.go
index 607e36f..bb8a39e 100644
--- a/test/proxy/http3_proxy_test.go
+++ b/test/proxy/http3_proxy_test.go
@@ -139,6 +139,7 @@ func TestHttp3Proxy2(t *testing.T) {
 		}
 		fmt.Println(resp.StatusCode())
 		fmt.Println(resp.Proto())
+		resp.CloseConn()
 		time.Sleep(time.Second)
 	}
 }