diff --git a/client.go b/client.go
index a43fa29..296ccb9 100755
--- a/client.go
+++ b/client.go
@@ -3,7 +3,6 @@ package main
 import (
 	"errors"
 	"fmt"
-	"io"
 	"log"
 	"net"
 	"sync"
@@ -107,8 +106,8 @@ func (s *TRPClient) dealChan() error {
 		return err
 	}
 	//创建成功后io.copy
-	go io.Copy(server, c)
-	io.Copy(c, server)
+	go relay(server, c.conn)
+	relay(c.conn, server)
 	return nil
 }
 
diff --git a/server.go b/server.go
index ad6b857..b70d858 100755
--- a/server.go
+++ b/server.go
@@ -3,7 +3,6 @@ package main
 import (
 	"errors"
 	"fmt"
-	"io"
 	"io/ioutil"
 	"log"
 	"net"
@@ -179,7 +178,7 @@ retry:
 	if _, err := link.WriteHost(s.tunnelTarget); err != nil {
 		goto retry
 	}
-	go io.Copy(link, c)
-	io.Copy(c, link.conn)
+	go relay(link.conn, c.conn)
+	relay(c.conn, link.conn)
 	return nil
 }
diff --git a/tunnel.go b/tunnel.go
index 1d8342f..ec7f177 100644
--- a/tunnel.go
+++ b/tunnel.go
@@ -62,6 +62,7 @@ func (s *Tunnel) cliProcess(c *Conn) error {
 		s.verifyError(c)
 		return err
 	}
+	c.conn.(*net.TCPConn).SetReadDeadline(time.Time{})
 	//做一个判断 添加到对应的channel里面以供使用
 	flag, err := c.ReadFlag()
 	if err != nil {
diff --git a/util.go b/util.go
index 4e95278..f44b2b0 100644
--- a/util.go
+++ b/util.go
@@ -7,6 +7,9 @@ import (
 	"encoding/binary"
 	"errors"
 	"fmt"
+	"io"
+	"log"
+	"net"
 	"net/http"
 	"net/http/httputil"
 	"net/url"
@@ -146,3 +149,10 @@ func replaceHost(resp []byte) []byte {
 	}
 	return []byte(str)
 }
+
+func relay(in, out net.Conn) {
+	if _, err := io.Copy(in, out); err != nil {
+		log.Println("copy error:", err)
+	}
+	in.Close() //
+}