diff --git a/.gitignore b/.gitignore
index 025f077..683c6f0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,4 @@
 TransX.exe
-TransX
\ No newline at end of file
+TransX
+server.log*
+client.log*
diff --git a/tscipher/cipher.go b/tscipher/cipher.go
index a8436ee..89724ec 100644
--- a/tscipher/cipher.go
+++ b/tscipher/cipher.go
@@ -6,7 +6,6 @@ import (
 	"github.com/TransX/utils"
 	"io"
 	"net"
-	"runtime/debug"
 	"strconv"
 	"strings"
 )
@@ -55,7 +54,11 @@ func NewCarrier(conn net.Conn, cipher Cipher, cache []byte, id string) *Carrier
 
 func (this *Carrier) GetReceiveBuff() []byte {
 	log.Debug("id %d receivebuff Get, len %d", this.AttachedTunnelID, len(this.receiveBuff))
-	return this.receiveBuff
+	buff := this.receiveBuff
+	_b := make([]byte, len(buff), cap(buff))
+	copy(_b, buff)
+	return _b
+	// return this.receiveBuff
 }
 
 func (this *Carrier) SetReceiveBuff(buff []byte) {
@@ -169,7 +172,6 @@ func RowReceiveData(carrier *Carrier) (n int, err error) {
 func ReceiveData(carrier *Carrier) (n int, err error) {
 	defer func() {
 		if r := recover(); r != nil {
-			debug.PrintStack()
 			log.Error("ReceiveData err %s", r)
 		}
 	}()