diff --git a/client.go b/client.go
index 8915d39..1a75c74 100644
--- a/client.go
+++ b/client.go
@@ -15,8 +15,8 @@ const (
 	RECV_PROTO int = 0
 )
 
-func NewClient(addr string, server string, target string, timeout int, catch int, key int,
-	tcpmode int) (*Client, error) {
+func NewClient(addr string, server string, target string, timeout int, key int,
+	tcpmode int, tcpmode_buffersize int, tcpmode_maxwin int, tcpmode_resend_timems int) (*Client, error) {
 
 	var ipaddr *net.UDPAddr
 	var tcpaddr *net.TCPAddr
@@ -41,17 +41,19 @@ func NewClient(addr string, server string, target string, timeout int, catch int
 
 	r := rand.New(rand.NewSource(time.Now().UnixNano()))
 	return &Client{
-		id:           r.Intn(math.MaxInt16),
-		ipaddr:       ipaddr,
-		tcpaddr:      tcpaddr,
-		addr:         addr,
-		ipaddrServer: ipaddrServer,
-		addrServer:   server,
-		targetAddr:   target,
-		timeout:      timeout,
-		catch:        catch,
-		key:          key,
-		tcpmode:      tcpmode,
+		id:                    r.Intn(math.MaxInt16),
+		ipaddr:                ipaddr,
+		tcpaddr:               tcpaddr,
+		addr:                  addr,
+		ipaddrServer:          ipaddrServer,
+		addrServer:            server,
+		targetAddr:            target,
+		timeout:               timeout,
+		key:                   key,
+		tcpmode:               tcpmode,
+		tcpmode_buffersize:    tcpmode_buffersize,
+		tcpmode_maxwin:        tcpmode_maxwin,
+		tcpmode_resend_timems: tcpmode_resend_timems,
 	}, nil
 }
 
@@ -62,7 +64,6 @@ type Client struct {
 	timeout               int
 	sproto                int
 	rproto                int
-	catch                 int
 	key                   int
 	tcpmode               int
 	tcpmode_buffersize    int
@@ -89,9 +90,6 @@ type Client struct {
 	recvPacket     uint64
 	sendPacketSize uint64
 	recvPacketSize uint64
-
-	sendCatchPacket uint64
-	recvCatchPacket uint64
 }
 
 type ClientConn struct {
@@ -167,24 +165,12 @@ func (p *Client) Run() {
 	interval := time.NewTicker(time.Second)
 	defer interval.Stop()
 
-	inter := 1000
-	if p.catch > 0 {
-		inter = 1000 / p.catch
-		if inter <= 0 {
-			inter = 1
-		}
-	}
-	intervalCatch := time.NewTicker(time.Millisecond * time.Duration(inter))
-	defer intervalCatch.Stop()
-
 	for {
 		select {
 		case <-interval.C:
 			p.checkTimeoutConn()
 			p.ping()
 			p.showNet()
-		case <-intervalCatch.C:
-			p.sendCatch()
 		case r := <-recv:
 			p.processPacket(r)
 		}
@@ -274,7 +260,7 @@ func (p *Client) AcceptTcpConn(conn *net.TCPConn) {
 			p.sendPacketSize += (uint64)(len(mb))
 
 			sendICMP(p.id, p.sequence, *p.conn, p.ipaddrServer, p.targetAddr, clientConn.id, (uint32)(MyMsg_DATA), mb,
-				SEND_PROTO, RECV_PROTO, p.catch, p.key,
+				SEND_PROTO, RECV_PROTO, p.key,
 				p.tcpmode, p.tcpmode_buffersize, p.tcpmode_maxwin, p.tcpmode_resend_timems)
 		}
 	}
@@ -317,7 +303,7 @@ func (p *Client) Accept() error {
 
 		clientConn.activeTime = now
 		sendICMP(p.id, p.sequence, *p.conn, p.ipaddrServer, p.targetAddr, clientConn.id, (uint32)(MyMsg_DATA), bytes[:n],
-			SEND_PROTO, RECV_PROTO, p.catch, p.key,
+			SEND_PROTO, RECV_PROTO, p.key,
 			p.tcpmode, p.tcpmode_buffersize, p.tcpmode_maxwin, p.tcpmode_resend_timems)
 
 		p.sequence++
@@ -362,10 +348,6 @@ func (p *Client) processPacket(packet *Packet) {
 	now := time.Now()
 	clientConn.activeTime = now
 
-	if packet.my.Type == (int32)(MyMsg_CATCH) {
-		p.recvCatchPacket++
-	}
-
 	_, err := p.listenConn.WriteToUDP(packet.my.Data, addr)
 	if err != nil {
 		loggo.Error("WriteToUDP Error read udp %s", err)
@@ -411,7 +393,7 @@ func (p *Client) ping() {
 		now := time.Now()
 		b, _ := now.MarshalBinary()
 		sendICMP(p.id, p.sequence, *p.conn, p.ipaddrServer, p.targetAddr, "", (uint32)(MyMsg_PING), b,
-			SEND_PROTO, RECV_PROTO, p.catch, p.key,
+			SEND_PROTO, RECV_PROTO, p.key,
 			p.tcpmode, p.tcpmode_buffersize, p.tcpmode_maxwin, p.tcpmode_resend_timems)
 		loggo.Info("ping %s %s %d %d %d %d", p.addrServer, now.String(), p.sproto, p.rproto, p.id, p.sequence)
 		p.sequence++
@@ -419,24 +401,10 @@ func (p *Client) ping() {
 }
 
 func (p *Client) showNet() {
-	loggo.Info("send %dPacket/s %dKB/s recv %dPacket/s %dKB/s sendCatch %d/s recvCatch %d/s",
-		p.sendPacket, p.sendPacketSize/1024, p.recvPacket, p.recvPacketSize/1024, p.sendCatchPacket, p.recvCatchPacket)
+	loggo.Info("send %dPacket/s %dKB/s recv %dPacket/s %dKB/s",
+		p.sendPacket, p.sendPacketSize/1024, p.recvPacket, p.recvPacketSize/1024)
 	p.sendPacket = 0
 	p.recvPacket = 0
 	p.sendPacketSize = 0
 	p.recvPacketSize = 0
-	p.sendCatchPacket = 0
-	p.recvCatchPacket = 0
-}
-
-func (p *Client) sendCatch() {
-	if p.catch > 0 {
-		for _, conn := range p.localIdToConnMap {
-			sendICMP(p.id, p.sequence, *p.conn, p.ipaddrServer, p.targetAddr, conn.id, (uint32)(MyMsg_CATCH), make([]byte, 0),
-				SEND_PROTO, RECV_PROTO, p.catch, p.key,
-				p.tcpmode, p.tcpmode_buffersize, p.tcpmode_maxwin, p.tcpmode_resend_timems)
-			p.sequence++
-			p.sendCatchPacket++
-		}
-	}
 }
diff --git a/framemgr.go b/framemgr.go
index f5fd26d..5243d67 100644
--- a/framemgr.go
+++ b/framemgr.go
@@ -3,7 +3,6 @@ package pingtunnel
 import (
 	"container/list"
 	"github.com/esrrhs/go-engine/src/rbuffergo"
-	"math/rand"
 	"sync"
 	"time"
 )
@@ -27,7 +26,7 @@ func NewFrameMgr(buffersize int, windowsize int, resend_timems int) *FrameMgr {
 
 	fm := &FrameMgr{sendb: sendb, recvb: recvb,
 		sendlock: &sync.Mutex{}, recvlock: &sync.Mutex{},
-		windowsize: windowsize, win: list.New(), sendid: rand.Int() % (FRAME_MAX_ID + 1),
+		windowsize: windowsize, win: list.New(), sendid: 0,
 		resend_timems: resend_timems, sendlist: list.New()}
 
 	return fm
diff --git a/msg.pb.go b/msg.pb.go
index 69338f5..afadbda 100644
--- a/msg.pb.go
+++ b/msg.pb.go
@@ -23,21 +23,18 @@ const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
 type MyMsg_TYPE int32
 
 const (
-	MyMsg_DATA  MyMsg_TYPE = 0
-	MyMsg_PING  MyMsg_TYPE = 1
-	MyMsg_CATCH MyMsg_TYPE = 2
+	MyMsg_DATA MyMsg_TYPE = 0
+	MyMsg_PING MyMsg_TYPE = 1
 )
 
 var MyMsg_TYPE_name = map[int32]string{
 	0: "DATA",
 	1: "PING",
-	2: "CATCH",
 }
 
 var MyMsg_TYPE_value = map[string]int32{
-	"DATA":  0,
-	"PING":  1,
-	"CATCH": 2,
+	"DATA": 0,
+	"PING": 1,
 }
 
 func (x MyMsg_TYPE) String() string {
@@ -48,13 +45,40 @@ func (MyMsg_TYPE) EnumDescriptor() ([]byte, []int) {
 	return fileDescriptor_c06e4cca6c2cc899, []int{0, 0}
 }
 
+type Frame_TYPE int32
+
+const (
+	Frame_DATA Frame_TYPE = 0
+	Frame_REQ  Frame_TYPE = 1
+	Frame_ACK  Frame_TYPE = 2
+)
+
+var Frame_TYPE_name = map[int32]string{
+	0: "DATA",
+	1: "REQ",
+	2: "ACK",
+}
+
+var Frame_TYPE_value = map[string]int32{
+	"DATA": 0,
+	"REQ":  1,
+	"ACK":  2,
+}
+
+func (x Frame_TYPE) String() string {
+	return proto.EnumName(Frame_TYPE_name, int32(x))
+}
+
+func (Frame_TYPE) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_c06e4cca6c2cc899, []int{1, 0}
+}
+
 type MyMsg struct {
 	Id                   string   `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
 	Type                 int32    `protobuf:"varint,2,opt,name=type,proto3" json:"type,omitempty"`
 	Target               string   `protobuf:"bytes,3,opt,name=target,proto3" json:"target,omitempty"`
 	Data                 []byte   `protobuf:"bytes,4,opt,name=data,proto3" json:"data,omitempty"`
 	Rproto               int32    `protobuf:"varint,5,opt,name=rproto,proto3" json:"rproto,omitempty"`
-	Catch                int32    `protobuf:"varint,6,opt,name=catch,proto3" json:"catch,omitempty"`
 	Key                  int32    `protobuf:"varint,7,opt,name=key,proto3" json:"key,omitempty"`
 	Tcpmode              int32    `protobuf:"varint,8,opt,name=tcpmode,proto3" json:"tcpmode,omitempty"`
 	TcpmodeBuffersize    int32    `protobuf:"varint,9,opt,name=tcpmode_buffersize,json=tcpmodeBuffersize,proto3" json:"tcpmode_buffersize,omitempty"`
@@ -125,13 +149,6 @@ func (m *MyMsg) GetRproto() int32 {
 	return 0
 }
 
-func (m *MyMsg) GetCatch() int32 {
-	if m != nil {
-		return m.Catch
-	}
-	return 0
-}
-
 func (m *MyMsg) GetKey() int32 {
 	if m != nil {
 		return m.Key
@@ -248,6 +265,7 @@ func (m *Frame) GetDataid() []int32 {
 
 func init() {
 	proto.RegisterEnum("MyMsg_TYPE", MyMsg_TYPE_name, MyMsg_TYPE_value)
+	proto.RegisterEnum("Frame_TYPE", Frame_TYPE_name, Frame_TYPE_value)
 	proto.RegisterType((*MyMsg)(nil), "MyMsg")
 	proto.RegisterType((*Frame)(nil), "Frame")
 }
@@ -255,27 +273,26 @@ func init() {
 func init() { proto.RegisterFile("msg.proto", fileDescriptor_c06e4cca6c2cc899) }
 
 var fileDescriptor_c06e4cca6c2cc899 = []byte{
-	// 339 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x54, 0x51, 0xcb, 0x6e, 0xe2, 0x30,
-	0x14, 0x1d, 0x27, 0x71, 0x48, 0xee, 0x30, 0x28, 0x73, 0x67, 0x5a, 0x59, 0x5d, 0x45, 0x48, 0x48,
-	0x6c, 0xda, 0x45, 0xfb, 0x05, 0x40, 0x9f, 0x0b, 0x2a, 0x14, 0x65, 0xd3, 0x6e, 0x50, 0x20, 0x26,
-	0xb5, 0xda, 0x84, 0x28, 0x31, 0x6a, 0xe9, 0x2f, 0xf4, 0x2f, 0xfb, 0x25, 0x95, 0x2f, 0x06, 0x89,
-	0x95, 0xcf, 0x4b, 0xb6, 0x75, 0x0e, 0x84, 0x65, 0x5b, 0x5c, 0xd4, 0xcd, 0x5a, 0xaf, 0xfb, 0xdf,
-	0x0e, 0xf0, 0xe9, 0x76, 0xda, 0x16, 0xd8, 0x03, 0x47, 0xe5, 0x82, 0xc5, 0x6c, 0x18, 0x26, 0x8e,
-	0xca, 0x11, 0xc1, 0xd3, 0xdb, 0x5a, 0x0a, 0x27, 0x66, 0x43, 0x9e, 0x10, 0xc6, 0x53, 0xf0, 0x75,
-	0xd6, 0x14, 0x52, 0x0b, 0x97, 0x72, 0x96, 0x99, 0x6c, 0x9e, 0xe9, 0x4c, 0x78, 0x31, 0x1b, 0x76,
-	0x13, 0xc2, 0x26, 0xdb, 0xd0, 0x1b, 0x82, 0xd3, 0x0d, 0x96, 0xe1, 0x7f, 0xe0, 0xcb, 0x4c, 0x2f,
-	0x5f, 0x84, 0x4f, 0xf2, 0x8e, 0x60, 0x04, 0xee, 0xab, 0xdc, 0x8a, 0x0e, 0x69, 0x06, 0xa2, 0x80,
-	0x8e, 0x5e, 0xd6, 0xe5, 0x3a, 0x97, 0x22, 0x20, 0x75, 0x4f, 0xf1, 0x1c, 0xd0, 0xc2, 0xf9, 0x62,
-	0xb3, 0x5a, 0xc9, 0xa6, 0x55, 0x9f, 0x52, 0x84, 0x14, 0xfa, 0x6b, 0x9d, 0xf1, 0xc1, 0xc0, 0x01,
-	0xf4, 0xf6, 0xf1, 0x32, 0xfb, 0x78, 0x57, 0x95, 0x00, 0x8a, 0xfe, 0xb1, 0xea, 0x94, 0x44, 0xbc,
-	0x84, 0x93, 0x7d, 0xac, 0x91, 0xad, 0xac, 0xf2, 0xb9, 0x56, 0xa5, 0x2c, 0x5b, 0xf1, 0x9b, 0xd2,
-	0xff, 0xac, 0x99, 0x90, 0x97, 0x92, 0xd5, 0x1f, 0x80, 0x97, 0x3e, 0xcd, 0x6e, 0x30, 0x00, 0xef,
-	0x7a, 0x94, 0x8e, 0xa2, 0x5f, 0x06, 0xcd, 0x1e, 0x1e, 0xef, 0x22, 0x86, 0x21, 0xf0, 0xc9, 0x28,
-	0x9d, 0xdc, 0x47, 0x4e, 0xff, 0x8b, 0x01, 0xbf, 0x6d, 0xb2, 0x52, 0x1e, 0x4a, 0x65, 0xc7, 0xa5,
-	0xee, 0x1e, 0xa4, 0xaa, 0x83, 0xc4, 0x32, 0x3c, 0x83, 0xc0, 0x9c, 0xe6, 0x17, 0x54, 0xb7, 0x9b,
-	0x1c, 0xb8, 0x1d, 0xcb, 0xa3, 0x5b, 0xec, 0x58, 0x34, 0x00, 0x3f, 0x1e, 0xc0, 0x9c, 0x2a, 0x17,
-	0x7e, 0xec, 0x9a, 0x01, 0x76, 0x6c, 0xdc, 0x7d, 0x86, 0x5a, 0x55, 0x85, 0xde, 0x54, 0x95, 0x7c,
-	0x5b, 0xf8, 0xb4, 0xca, 0xd5, 0x4f, 0x00, 0x00, 0x00, 0xff, 0xff, 0xb6, 0x1b, 0xbb, 0x28, 0x14,
-	0x02, 0x00, 0x00,
+	// 332 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x64, 0x51, 0xcd, 0x4a, 0xc3, 0x40,
+	0x10, 0x76, 0xf3, 0xd3, 0xa6, 0x63, 0x2d, 0x71, 0x45, 0x19, 0x7a, 0x0a, 0x01, 0xa1, 0x17, 0x3d,
+	0xe8, 0x13, 0xb4, 0x5a, 0x45, 0xa4, 0x52, 0x97, 0x5e, 0xf4, 0x52, 0x52, 0xb3, 0x0d, 0x8b, 0x26,
+	0x0d, 0xc9, 0x16, 0xad, 0x2f, 0xe5, 0x33, 0xf8, 0x66, 0xb2, 0xd3, 0x6d, 0xa0, 0x78, 0xda, 0xef,
+	0x8f, 0x99, 0xe5, 0x1b, 0xe8, 0xe4, 0x75, 0x76, 0x59, 0x56, 0x2b, 0xbd, 0x8a, 0x7f, 0x1d, 0xf0,
+	0x27, 0x9b, 0x49, 0x9d, 0xf1, 0x1e, 0x38, 0x2a, 0x45, 0x16, 0xb1, 0x41, 0x47, 0x38, 0x2a, 0xe5,
+	0x1c, 0x3c, 0xbd, 0x29, 0x25, 0x3a, 0x11, 0x1b, 0xf8, 0x82, 0x30, 0x3f, 0x83, 0x96, 0x4e, 0xaa,
+	0x4c, 0x6a, 0x74, 0x29, 0x67, 0x99, 0xc9, 0xa6, 0x89, 0x4e, 0xd0, 0x8b, 0xd8, 0xa0, 0x2b, 0x08,
+	0x9b, 0x6c, 0x45, 0x3b, 0xd0, 0xa7, 0x09, 0x96, 0xf1, 0x10, 0xdc, 0x77, 0xb9, 0xc1, 0x36, 0x89,
+	0x06, 0x72, 0x84, 0xb6, 0x7e, 0x2b, 0xf3, 0x55, 0x2a, 0x31, 0x20, 0x75, 0x47, 0xf9, 0x05, 0x70,
+	0x0b, 0xe7, 0x8b, 0xf5, 0x72, 0x29, 0xab, 0x5a, 0x7d, 0x4b, 0xec, 0x50, 0xe8, 0xd8, 0x3a, 0xa3,
+	0xc6, 0xe0, 0xe7, 0xd0, 0xdb, 0xc5, 0xf3, 0xe4, 0xeb, 0x53, 0x15, 0x08, 0x14, 0x3d, 0xb2, 0xea,
+	0x84, 0x44, 0x7e, 0x05, 0xa7, 0xbb, 0x58, 0x25, 0x6b, 0x59, 0xa4, 0x73, 0xad, 0x72, 0x99, 0xd7,
+	0x78, 0x48, 0xe9, 0x13, 0x6b, 0x0a, 0xf2, 0x66, 0x64, 0xc5, 0x7d, 0xf0, 0x66, 0x2f, 0xd3, 0x31,
+	0x0f, 0xc0, 0xbb, 0x1d, 0xce, 0x86, 0xe1, 0x81, 0x41, 0xd3, 0x87, 0xa7, 0xfb, 0x90, 0xc5, 0x3f,
+	0x0c, 0xfc, 0xbb, 0x2a, 0xc9, 0x65, 0xd3, 0x19, 0xdb, 0xef, 0x6c, 0xbb, 0x85, 0x9a, 0x0c, 0x84,
+	0x65, 0xbc, 0x0f, 0x81, 0x79, 0xcd, 0x6a, 0x6a, 0xd3, 0x15, 0x0d, 0xb7, 0xb7, 0xf0, 0x68, 0x8a,
+	0xbd, 0x05, 0xf5, 0xeb, 0xef, 0xf7, 0x6b, 0x5e, 0x95, 0x62, 0x2b, 0x72, 0x4d, 0xbf, 0x5b, 0x16,
+	0xc7, 0xff, 0x7e, 0xda, 0x06, 0x57, 0x8c, 0x9f, 0x43, 0x66, 0xc0, 0xf0, 0xe6, 0x31, 0x74, 0x46,
+	0xdd, 0x57, 0x28, 0x55, 0x91, 0xe9, 0x75, 0x51, 0xc8, 0x8f, 0x45, 0x8b, 0x0e, 0x73, 0xfd, 0x17,
+	0x00, 0x00, 0xff, 0xff, 0x6c, 0xfe, 0x5f, 0xc5, 0x17, 0x02, 0x00, 0x00,
 }
diff --git a/msg.proto b/msg.proto
index 7c8086b..14945fb 100644
--- a/msg.proto
+++ b/msg.proto
@@ -4,7 +4,6 @@ message MyMsg {
   enum TYPE {
     DATA = 0;
     PING = 1;
-    CATCH = 2;
   }
 
   string id = 1;
@@ -12,7 +11,6 @@ message MyMsg {
   string target = 3;
   bytes data = 4;
   int32 rproto = 5;
-  int32 catch = 6;
   int32 key = 7;
   int32 tcpmode = 8;
   int32 tcpmode_buffersize = 9;
@@ -21,6 +19,12 @@ message MyMsg {
 }
 
 message Frame {
+  enum TYPE {
+    DATA = 0;
+    REQ = 1;
+    ACK = 2;
+  }
+  
   int32 type = 1;
   bool resend = 2;
   int64 sendtime = 3;
diff --git a/pingtunnel.go b/pingtunnel.go
index 84bb222..30a4513 100644
--- a/pingtunnel.go
+++ b/pingtunnel.go
@@ -17,7 +17,7 @@ import (
 )
 
 func sendICMP(id int, sequence int, conn icmp.PacketConn, server *net.IPAddr, target string,
-	connId string, msgType uint32, data []byte, sproto int, rproto int, catch int, key int,
+	connId string, msgType uint32, data []byte, sproto int, rproto int, key int,
 	tcpmode int, tcpmode_buffer_size int, tcpmode_maxwin int, tcpmode_resend_time int) {
 
 	m := &MyMsg{
@@ -26,7 +26,6 @@ func sendICMP(id int, sequence int, conn icmp.PacketConn, server *net.IPAddr, ta
 		Target:              target,
 		Data:                data,
 		Rproto:              (int32)(rproto),
-		Catch:               (int32)(catch),
 		Key:                 (int32)(key),
 		Tcpmode:             (int32)(tcpmode),
 		TcpmodeBuffersize:   (int32)(tcpmode_buffer_size),
@@ -135,20 +134,7 @@ func GetMd5String(s string) string {
 	return hex.EncodeToString(h.Sum(nil))
 }
 
-type CatchMsg struct {
-	conn *ServerConn
-	id   string
-	src  *net.IPAddr
-	data []byte
-}
-
 const (
 	FRAME_MAX_SIZE int = 888
 	FRAME_MAX_ID   int = 999
 )
-
-const (
-	FRAME_TYPE_DATA int = 0x0101
-	FRAME_TYPE_REQ  int = 0x0202
-	FRAME_TYPE_ACK  int = 0x0303
-)
diff --git a/server.go b/server.go
index e317dc6..a9a1768 100644
--- a/server.go
+++ b/server.go
@@ -27,9 +27,6 @@ type Server struct {
 	sendPacketSize uint64
 	recvPacketSize uint64
 
-	sendCatchPacket uint64
-	recvCatchPacket uint64
-
 	echoId  int
 	echoSeq int
 }
@@ -43,8 +40,6 @@ type ServerConn struct {
 	activeTime    time.Time
 	close         bool
 	rproto        int
-	catch         int
-	catchQueue    chan *CatchMsg
 }
 
 func (p *Server) Run() {
@@ -89,7 +84,7 @@ func (p *Server) processPacket(packet *Packet) {
 		t.UnmarshalBinary(packet.my.Data)
 		loggo.Info("ping from %s %s %d %d %d", packet.src.String(), t.String(), packet.my.Rproto, packet.echoId, packet.echoSeq)
 		sendICMP(packet.echoId, packet.echoSeq, *p.conn, packet.src, "", "", (uint32)(MyMsg_PING), packet.my.Data,
-			(int)(packet.my.Rproto), -1, 0, p.key,
+			(int)(packet.my.Rproto), -1, p.key,
 			0, 0, 0, 0)
 		return
 	}
@@ -117,10 +112,8 @@ func (p *Server) processPacket(packet *Packet) {
 				return
 			}
 
-			catchQueue := make(chan *CatchMsg, packet.my.Catch)
-
 			localConn = &ServerConn{tcpconn: targetConn, tcpaddrTarget: ipaddrTarget, id: id, activeTime: now, close: false,
-				rproto: (int)(packet.my.Rproto), catchQueue: catchQueue}
+				rproto: (int)(packet.my.Rproto)}
 
 			p.localConnMap[id] = localConn
 
@@ -141,10 +134,8 @@ func (p *Server) processPacket(packet *Packet) {
 				return
 			}
 
-			catchQueue := make(chan *CatchMsg, packet.my.Catch)
-
 			localConn = &ServerConn{conn: targetConn, ipaddrTarget: ipaddrTarget, id: id, activeTime: now, close: false,
-				rproto: (int)(packet.my.Rproto), catchQueue: catchQueue}
+				rproto: (int)(packet.my.Rproto)}
 
 			p.localConnMap[id] = localConn
 
@@ -153,20 +144,6 @@ func (p *Server) processPacket(packet *Packet) {
 	}
 
 	localConn.activeTime = now
-	localConn.catch = (int)(packet.my.Catch)
-
-	if packet.my.Type == (int32)(MyMsg_CATCH) {
-		select {
-		case re := <-localConn.catchQueue:
-			sendICMP(packet.echoId, packet.echoSeq, *p.conn, re.src, "", re.id, (uint32)(MyMsg_CATCH), re.data,
-				re.conn.rproto, -1, 0, p.key,
-				0, 0, 0, 0)
-			p.sendCatchPacket++
-		case <-time.After(time.Duration(1) * time.Millisecond):
-		}
-		p.recvCatchPacket++
-		return
-	}
 
 	if packet.my.Type == (int32)(MyMsg_DATA) {
 
@@ -207,16 +184,9 @@ func (p *Server) RecvTCP(conn *ServerConn, id string, src *net.IPAddr) {
 		now := time.Now()
 		conn.activeTime = now
 
-		if conn.catch > 0 {
-			select {
-			case conn.catchQueue <- &CatchMsg{conn: conn, id: id, src: src, data: bytes[:n]}:
-			case <-time.After(time.Duration(10) * time.Millisecond):
-			}
-		} else {
-			sendICMP(p.echoId, p.echoSeq, *p.conn, src, "", id, (uint32)(MyMsg_DATA), bytes[:n],
-				conn.rproto, -1, 0, p.key,
-				0, 0, 0, 0)
-		}
+		sendICMP(p.echoId, p.echoSeq, *p.conn, src, "", id, (uint32)(MyMsg_DATA), bytes[:n],
+			conn.rproto, -1, p.key,
+			0, 0, 0, 0)
 
 		p.sendPacket++
 		p.sendPacketSize += (uint64)(n)
@@ -248,16 +218,9 @@ func (p *Server) Recv(conn *ServerConn, id string, src *net.IPAddr) {
 		now := time.Now()
 		conn.activeTime = now
 
-		if conn.catch > 0 {
-			select {
-			case conn.catchQueue <- &CatchMsg{conn: conn, id: id, src: src, data: bytes[:n]}:
-			case <-time.After(time.Duration(10) * time.Millisecond):
-			}
-		} else {
-			sendICMP(p.echoId, p.echoSeq, *p.conn, src, "", id, (uint32)(MyMsg_DATA), bytes[:n],
-				conn.rproto, -1, 0, p.key,
-				0, 0, 0, 0)
-		}
+		sendICMP(p.echoId, p.echoSeq, *p.conn, src, "", id, (uint32)(MyMsg_DATA), bytes[:n],
+			conn.rproto, -1, p.key,
+			0, 0, 0, 0)
 
 		p.sendPacket++
 		p.sendPacketSize += (uint64)(n)
@@ -290,12 +253,10 @@ func (p *Server) checkTimeoutConn() {
 }
 
 func (p *Server) showNet() {
-	loggo.Info("send %dPacket/s %dKB/s recv %dPacket/s %dKB/s sendCatch %d/s recvCatch %d/s",
-		p.sendPacket, p.sendPacketSize/1024, p.recvPacket, p.recvPacketSize/1024, p.sendCatchPacket, p.recvCatchPacket)
+	loggo.Info("send %dPacket/s %dKB/s recv %dPacket/s %dKB/s",
+		p.sendPacket, p.sendPacketSize/1024, p.recvPacket, p.recvPacketSize/1024)
 	p.sendPacket = 0
 	p.recvPacket = 0
 	p.sendPacketSize = 0
 	p.recvPacketSize = 0
-	p.sendCatchPacket = 0
-	p.recvCatchPacket = 0
 }