diff --git a/client/c2c_processor.go b/client/c2c_processor.go
index 5e67fc74..bcc447c2 100644
--- a/client/c2c_processor.go
+++ b/client/c2c_processor.go
@@ -263,7 +263,7 @@ func troopAddMemberBroadcastDecoder(c *QQClient, pMsg *msg.Message, _ *incomingP
 
 func systemMessageDecoder(c *QQClient, _ *msg.Message, _ *incomingPacketInfo) {
 	_, pkt := c.buildSystemMsgNewFriendPacket()
-	_ = c.send(pkt)
+	_ = c.sendPacket(pkt)
 }
 
 func troopSystemMessageDecoder(c *QQClient, pMsg *msg.Message, info *incomingPacketInfo) {
@@ -291,7 +291,7 @@ func msgType0x211Decoder(c *QQClient, pMsg *msg.Message, info *incomingPacketInf
 		c.Error("unmarshal sub msg 0x4 error: %v", err)
 		return
 	}
-	if sub4.NotOnlineFile != nil && sub4.NotOnlineFile.GetSubcmd() == 1 { // subcmd: 1 -> send, 2-> recv
+	if sub4.NotOnlineFile != nil && sub4.NotOnlineFile.GetSubcmd() == 1 { // subcmd: 1 -> sendPacket, 2-> recv
 		rsp, err := c.sendAndWait(c.buildOfflineFileDownloadRequestPacket(sub4.NotOnlineFile.FileUuid)) // offline_file.go
 		if err != nil {
 			return
diff --git a/client/client.go b/client/client.go
index dcd4b9a4..91f69544 100644
--- a/client/client.go
+++ b/client/client.go
@@ -6,7 +6,6 @@ import (
 	"math"
 	"math/rand"
 	"net"
-	"runtime/debug"
 	"sort"
 	"sync"
 	"sync/atomic"
@@ -206,14 +205,12 @@ func NewClientMd5(uin int64, passwordMd5 [16]byte) *QQClient {
 		groupSeq:                int32(rand.Intn(20000)),
 		friendSeq:               22911,
 		highwayApplyUpSeq:       77918,
-		// ksid:                    []byte(fmt.Sprintf("|%s|A8.2.7.27f6ea96", SystemDeviceInfo.IMEI)),
-		eventHandlers:   &eventHandlers{},
-		msgSvcCache:     utils.NewCache(time.Second * 15),
-		transCache:      utils.NewCache(time.Second * 15),
-		onlinePushCache: utils.NewCache(time.Second * 15),
-		// version:                 genVersionInfo(SystemDeviceInfo.Protocol),
-		servers: []*net.TCPAddr{},
-		alive:   true,
+		eventHandlers:           &eventHandlers{},
+		msgSvcCache:             utils.NewCache(time.Second * 15),
+		transCache:              utils.NewCache(time.Second * 15),
+		onlinePushCache:         utils.NewCache(time.Second * 15),
+		servers:                 []*net.TCPAddr{},
+		alive:                   true,
 	}
 	cli.UseDevice(SystemDeviceInfo)
 	sso, err := getSSOAddress()
@@ -762,16 +759,16 @@ func (c *QQClient) SolveGroupJoinRequest(i interface{}, accept, block bool, reas
 				return 1
 			}
 		}(), false, accept, block, reason)
-		_ = c.send(pkt)
+		_ = c.sendPacket(pkt)
 	case *GroupInvitedRequest:
 		_, pkt := c.buildSystemMsgGroupActionPacket(req.RequestId, req.InvitorUin, req.GroupCode, 1, true, accept, block, reason)
-		_ = c.send(pkt)
+		_ = c.sendPacket(pkt)
 	}
 }
 
 func (c *QQClient) SolveFriendRequest(req *NewFriendRequest, accept bool) {
 	_, pkt := c.buildSystemMsgFriendActionPacket(req.RequestId, req.RequesterUin, accept)
-	_ = c.send(pkt)
+	_ = c.sendPacket(pkt)
 }
 
 func (c *QQClient) getSKey() string {
@@ -858,7 +855,7 @@ func (c *QQClient) SetCustomServer(servers []*net.TCPAddr) {
 
 func (c *QQClient) SendGroupGift(groupCode, uin uint64, gift message.GroupGift) {
 	_, packet := c.sendGroupGiftPacket(groupCode, uin, gift)
-	_ = c.send(packet)
+	_ = c.sendPacket(packet)
 }
 
 func (c *QQClient) registerClient() error {
@@ -893,220 +890,6 @@ func (c *QQClient) nextHighwayApplySeq() int32 {
 	return atomic.AddInt32(&c.highwayApplyUpSeq, 2)
 }
 
-func (c *QQClient) send(pkt []byte) error {
-	err := c.TCP.Write(pkt)
-	if err != nil {
-		atomic.AddUint64(&c.stat.PacketLost, 1)
-	} else {
-		atomic.AddUint64(&c.stat.PacketSent, 1)
-	}
-	return errors.Wrap(err, "Packet failed to send")
-}
-
-func (c *QQClient) sendAndWait(seq uint16, pkt []byte, params ...requestParams) (interface{}, error) {
-	type T struct {
-		Response interface{}
-		Error    error
-	}
-
-	ch := make(chan T)
-	defer close(ch)
-
-	p := func() requestParams {
-		if len(params) == 0 {
-			return nil
-		}
-		return params[0]
-	}()
-
-	c.handlers.Store(seq, &handlerInfo{fun: func(i interface{}, err error) {
-		ch <- T{
-			Response: i,
-			Error:    err,
-		}
-	}, params: p})
-
-	err := c.send(pkt)
-	if err != nil {
-		c.handlers.Delete(seq)
-		return nil, err
-	}
-
-	retry := 0
-	for {
-		select {
-		case rsp := <-ch:
-			return rsp.Response, rsp.Error
-		case <-time.After(time.Second * 15):
-			retry++
-			if retry < 2 {
-				_ = c.send(pkt)
-				continue
-			}
-			c.handlers.Delete(seq)
-			// c.Error("packet timed out, seq: %v", seq)
-			// println("Packet Timed out")
-			return nil, errors.New("Packet timed out")
-		}
-	}
-}
-
-// 等待一个或多个数据包解析, 优先级低于 sendAndWait
-// 返回终止解析函数
-func (c *QQClient) waitPacket(cmd string, f func(interface{}, error)) func() {
-	c.waiters.Store(cmd, f)
-	return func() {
-		c.waiters.Delete(cmd)
-	}
-}
-
-func (c *QQClient) connect() error {
-	c.Info("connect to server: %v", c.servers[c.currServerIndex].String())
-	err := c.TCP.Connect(c.servers[c.currServerIndex])
-	c.currServerIndex++
-	if c.currServerIndex == len(c.servers) {
-		c.currServerIndex = 0
-	}
-	if err != nil {
-		c.retryTimes++
-		if c.retryTimes > len(c.servers) {
-			return errors.New("All servers are unreachable")
-		}
-		c.Error("connect server error: %v", err)
-		return err
-	}
-	c.retryTimes = 0
-	c.ConnectTime = time.Now()
-	return nil
-}
-
-func (c *QQClient) quickReconnect() {
-	c.Disconnect()
-	time.Sleep(time.Millisecond * 200)
-	if err := c.connect(); err != nil {
-		c.Error("connect server error: %v", err)
-		c.dispatchDisconnectEvent(&ClientDisconnectedEvent{Message: "quick reconnect failed"})
-		return
-	}
-	if err := c.registerClient(); err != nil {
-		c.Error("register client failed: %v", err)
-		c.Disconnect()
-		c.dispatchDisconnectEvent(&ClientDisconnectedEvent{Message: "register error"})
-		return
-	}
-}
-
-func (c *QQClient) Disconnect() {
-	c.Online = false
-	c.TCP.Close()
-}
-
-func (c *QQClient) plannedDisconnect(_ *utils.TCPListener) {
-	c.Debug("planned disconnect.")
-	atomic.AddUint32(&c.stat.DisconnectTimes, 1)
-	c.Online = false
-}
-
-func (c *QQClient) unexpectedDisconnect(_ *utils.TCPListener, e error) {
-	c.Error("unexpected disconnect: %v", e)
-	atomic.AddUint32(&c.stat.DisconnectTimes, 1)
-	c.Online = false
-	if err := c.connect(); err != nil {
-		c.Error("connect server error: %v", err)
-		c.dispatchDisconnectEvent(&ClientDisconnectedEvent{Message: "connection dropped by server."})
-		return
-	}
-	if err := c.registerClient(); err != nil {
-		c.Error("register client failed: %v", err)
-		c.Disconnect()
-		c.dispatchDisconnectEvent(&ClientDisconnectedEvent{Message: "register error"})
-		return
-	}
-}
-
-func (c *QQClient) netLoop() {
-	errCount := 0
-	for c.alive {
-		l, err := c.TCP.ReadInt32()
-		if err != nil {
-			time.Sleep(time.Millisecond * 500)
-			continue
-		}
-		data, _ := c.TCP.ReadBytes(int(l) - 4)
-		pkt, err := packets.ParseIncomingPacket(data, c.sigInfo.d2Key)
-		if err != nil {
-			c.Error("parse incoming packet error: %v", err)
-			if errors.Is(err, packets.ErrSessionExpired) || errors.Is(err, packets.ErrPacketDropped) {
-				c.Disconnect()
-				go c.dispatchDisconnectEvent(&ClientDisconnectedEvent{Message: "session expired"})
-				continue
-			}
-			errCount++
-			if errCount > 2 {
-				go c.quickReconnect()
-				continue
-			}
-			continue
-		}
-		payload := pkt.Payload
-		if pkt.Flag2 == 2 {
-			payload, err = pkt.DecryptPayload(c.RandomKey, c.sigInfo.wtSessionTicketKey)
-			if err != nil {
-				c.Error("decrypt payload error: %v", err)
-				continue
-			}
-		}
-		errCount = 0
-		c.Debug("rev pkt: %v seq: %v", pkt.CommandName, pkt.SequenceId)
-		atomic.AddUint64(&c.stat.PacketReceived, 1)
-		go func() {
-			defer func() {
-				if pan := recover(); pan != nil {
-					c.Error("panic on decoder %v : %v\n%s", pkt.CommandName, pan, debug.Stack())
-				}
-			}()
-
-			if decoder, ok := decoders[pkt.CommandName]; ok {
-				// found predefined decoder
-				info, ok := c.handlers.LoadAndDelete(pkt.SequenceId)
-				rsp, err := decoder(c, &incomingPacketInfo{
-					SequenceId:  pkt.SequenceId,
-					CommandName: pkt.CommandName,
-					Params: func() requestParams {
-						if !ok {
-							return nil
-						}
-						return info.params
-					}(),
-				}, payload)
-				if err != nil {
-					c.Debug("decode pkt %v error: %+v", pkt.CommandName, err)
-				}
-				if ok {
-					info.fun(rsp, err)
-				} else if f, ok := c.waiters.Load(pkt.CommandName); ok { // 在不存在handler的情况下触发wait
-					f.(func(interface{}, error))(rsp, err)
-				}
-			} else if f, ok := c.handlers.LoadAndDelete(pkt.SequenceId); ok {
-				// does not need decoder
-				f.fun(nil, nil)
-			} else {
-				c.Debug("Unhandled Command: %s\nSeq: %d\nThis message can be ignored.", pkt.CommandName, pkt.SequenceId)
-			}
-		}()
-	}
-	/*
-		c.NetLooping = false
-		c.Online = false
-		_ = c.TCP.Close()
-		if c.lastLostMsg == "" {
-			c.lastLostMsg = "Connection lost."
-		}
-		c.stat.LostTimes++
-		c.dispatchDisconnectEvent(&ClientDisconnectedEvent{Message: c.lastLostMsg})
-	*/
-}
-
 func (c *QQClient) doHeartbeat() {
 	c.heartbeatEnabled = true
 	times := 0
diff --git a/client/decoders.go b/client/decoders.go
index 65ba2c9d..9856ac39 100644
--- a/client/decoders.go
+++ b/client/decoders.go
@@ -369,7 +369,7 @@ func decodePushReqPacket(c *QQClient, _ *incomingPacketInfo, payload []byte) (in
 
 	seq := r.ReadInt64(3)
 	_, pkt := c.buildConfPushRespPacket(t, seq, jceBuf)
-	return nil, c.send(pkt)
+	return nil, c.sendPacket(pkt)
 }
 
 // MessageSvc.PbGetMsg
@@ -401,7 +401,7 @@ func decodeSvcNotify(c *QQClient, _ *incomingPacketInfo, payload []byte) (interf
 	}
 	if _, ok := sysMsgDecoders[notify.MsgType]; ok {
 		_, pkt := c.buildSystemMsgNewFriendPacket()
-		return nil, c.send(pkt)
+		return nil, c.sendPacket(pkt)
 	}
 	_, err := c.sendAndWait(c.buildGetMessageRequestPacket(msg.SyncFlag_START, time.Now().Unix()))
 	return nil, err
diff --git a/client/group_file.go b/client/group_file.go
index a5c8ca32..35ba0107 100644
--- a/client/group_file.go
+++ b/client/group_file.go
@@ -192,7 +192,7 @@ func (fs *GroupFileSystem) UploadFile(p, name, folderId string) error {
 	rsp := i.(*oidb.UploadFileRspBody)
 	if rsp.BoolFileExist {
 		_, pkt := fs.client.buildGroupFileFeedsRequest(fs.GroupCode, rsp.FileId, rsp.BusId, rand.Int31())
-		return fs.client.send(pkt)
+		return fs.client.sendPacket(pkt)
 	}
 	if len(rsp.UploadIpLanV4) == 0 {
 		return errors.New("server requires unsupported ftn upload")
@@ -238,7 +238,7 @@ func (fs *GroupFileSystem) UploadFile(p, name, folderId string) error {
 		return errors.Wrap(err, "upload failed")
 	}
 	_, pkt := fs.client.buildGroupFileFeedsRequest(fs.GroupCode, rsp.FileId, rsp.BusId, rand.Int31())
-	return fs.client.send(pkt)
+	return fs.client.sendPacket(pkt)
 }
 
 func (fs *GroupFileSystem) GetDownloadUrl(file *GroupFile) string {
diff --git a/client/group_msg.go b/client/group_msg.go
index 31e1be8f..0003d036 100644
--- a/client/group_msg.go
+++ b/client/group_msg.go
@@ -123,11 +123,11 @@ func (c *QQClient) sendGroupMessage(groupCode int64, forward bool, m *message.Se
 		fragmented := m.ToFragmented()
 		for i, elems := range fragmented {
 			_, pkt := c.buildGroupSendingPacket(groupCode, mr, int32(len(fragmented)), int32(i), div, forward, elems)
-			_ = c.send(pkt)
+			_ = c.sendPacket(pkt)
 		}
 	} else {
 		_, pkt := c.buildGroupSendingPacket(groupCode, mr, 1, 0, 0, forward, m.Elements)
-		_ = c.send(pkt)
+		_ = c.sendPacket(pkt)
 	}
 	var mid int32
 	ret := &message.GroupMessage{
@@ -353,9 +353,9 @@ func decodeMsgSendResponse(c *QQClient, _ *incomingPacketInfo, payload []byte) (
 	switch rsp.GetResult() {
 	case 0: // OK.
 	case 55:
-		c.Error("send msg error: %v Bot has blocked target's content", rsp.GetResult())
+		c.Error("sendPacket msg error: %v Bot has blocked target's content", rsp.GetResult())
 	default:
-		c.Error("send msg error: %v %v", rsp.GetResult(), rsp.GetErrMsg())
+		c.Error("sendPacket msg error: %v %v", rsp.GetResult(), rsp.GetErrMsg())
 	}
 	return nil, nil
 }
diff --git a/client/network.go b/client/network.go
new file mode 100644
index 00000000..92609431
--- /dev/null
+++ b/client/network.go
@@ -0,0 +1,223 @@
+package client
+
+import (
+	"github.com/Mrs4s/MiraiGo/protocol/packets"
+	"github.com/Mrs4s/MiraiGo/utils"
+	"github.com/pkg/errors"
+	"runtime/debug"
+	"sync/atomic"
+	"time"
+)
+
+// connect 连接到 QQClient.servers 中的服务器
+func (c *QQClient) connect() error {
+	c.Info("connect to server: %v", c.servers[c.currServerIndex].String())
+	err := c.TCP.Connect(c.servers[c.currServerIndex])
+	c.currServerIndex++
+	if c.currServerIndex == len(c.servers) {
+		c.currServerIndex = 0
+	}
+	if err != nil {
+		c.retryTimes++
+		if c.retryTimes > len(c.servers) {
+			return errors.New("All servers are unreachable")
+		}
+		c.Error("connect server error: %v", err)
+		return err
+	}
+	c.retryTimes = 0
+	c.ConnectTime = time.Now()
+	return nil
+}
+
+// quickReconnect 快速重连
+func (c *QQClient) quickReconnect() {
+	c.Disconnect()
+	time.Sleep(time.Millisecond * 200)
+	if err := c.connect(); err != nil {
+		c.Error("connect server error: %v", err)
+		c.dispatchDisconnectEvent(&ClientDisconnectedEvent{Message: "quick reconnect failed"})
+		return
+	}
+	if err := c.registerClient(); err != nil {
+		c.Error("register client failed: %v", err)
+		c.Disconnect()
+		c.dispatchDisconnectEvent(&ClientDisconnectedEvent{Message: "register error"})
+		return
+	}
+}
+
+// Disconnect 中断连接, 不释放资源
+func (c *QQClient) Disconnect() {
+	c.Online = false
+	c.TCP.Close()
+}
+
+// sendAndWait 向服务器发送一个数据包, 并等待返回
+func (c *QQClient) sendAndWait(seq uint16, pkt []byte, params ...requestParams) (interface{}, error) {
+	type T struct {
+		Response interface{}
+		Error    error
+	}
+
+	ch := make(chan T)
+	defer close(ch)
+
+	p := func() requestParams {
+		if len(params) == 0 {
+			return nil
+		}
+		return params[0]
+	}()
+
+	c.handlers.Store(seq, &handlerInfo{fun: func(i interface{}, err error) {
+		ch <- T{
+			Response: i,
+			Error:    err,
+		}
+	}, params: p})
+
+	err := c.sendPacket(pkt)
+	if err != nil {
+		c.handlers.Delete(seq)
+		return nil, err
+	}
+
+	retry := 0
+	for {
+		select {
+		case rsp := <-ch:
+			return rsp.Response, rsp.Error
+		case <-time.After(time.Second * 15):
+			retry++
+			if retry < 2 {
+				_ = c.sendPacket(pkt)
+				continue
+			}
+			c.handlers.Delete(seq)
+			// c.Error("packet timed out, seq: %v", seq)
+			// println("Packet Timed out")
+			return nil, errors.New("Packet timed out")
+		}
+	}
+}
+
+// sendPacket 向服务器发送一个数据包
+func (c *QQClient) sendPacket(pkt []byte) error {
+	err := c.TCP.Write(pkt)
+	if err != nil {
+		atomic.AddUint64(&c.stat.PacketLost, 1)
+	} else {
+		atomic.AddUint64(&c.stat.PacketSent, 1)
+	}
+	return errors.Wrap(err, "Packet failed to sendPacket")
+}
+
+// waitPacket
+// 等待一个或多个数据包解析, 优先级低于 sendAndWait
+// 返回终止解析函数
+func (c *QQClient) waitPacket(cmd string, f func(interface{}, error)) func() {
+	c.waiters.Store(cmd, f)
+	return func() {
+		c.waiters.Delete(cmd)
+	}
+}
+
+// plannedDisconnect 计划中断线事件
+func (c *QQClient) plannedDisconnect(_ *utils.TCPListener) {
+	c.Debug("planned disconnect.")
+	atomic.AddUint32(&c.stat.DisconnectTimes, 1)
+	c.Online = false
+}
+
+// unexpectedDisconnect 非预期断线事件
+func (c *QQClient) unexpectedDisconnect(_ *utils.TCPListener, e error) {
+	c.Error("unexpected disconnect: %v", e)
+	atomic.AddUint32(&c.stat.DisconnectTimes, 1)
+	c.Online = false
+	if err := c.connect(); err != nil {
+		c.Error("connect server error: %v", err)
+		c.dispatchDisconnectEvent(&ClientDisconnectedEvent{Message: "connection dropped by server."})
+		return
+	}
+	if err := c.registerClient(); err != nil {
+		c.Error("register client failed: %v", err)
+		c.Disconnect()
+		c.dispatchDisconnectEvent(&ClientDisconnectedEvent{Message: "register error"})
+		return
+	}
+}
+
+// netLoop 通过循环来不停接收数据包
+func (c *QQClient) netLoop() {
+	errCount := 0
+	for c.alive {
+		l, err := c.TCP.ReadInt32()
+		if err != nil {
+			time.Sleep(time.Millisecond * 500)
+			continue
+		}
+		data, _ := c.TCP.ReadBytes(int(l) - 4)
+		pkt, err := packets.ParseIncomingPacket(data, c.sigInfo.d2Key)
+		if err != nil {
+			c.Error("parse incoming packet error: %v", err)
+			if errors.Is(err, packets.ErrSessionExpired) || errors.Is(err, packets.ErrPacketDropped) {
+				c.Disconnect()
+				go c.dispatchDisconnectEvent(&ClientDisconnectedEvent{Message: "session expired"})
+				continue
+			}
+			errCount++
+			if errCount > 2 {
+				go c.quickReconnect()
+				continue
+			}
+			continue
+		}
+		payload := pkt.Payload
+		if pkt.Flag2 == 2 {
+			payload, err = pkt.DecryptPayload(c.RandomKey, c.sigInfo.wtSessionTicketKey)
+			if err != nil {
+				c.Error("decrypt payload error: %v", err)
+				continue
+			}
+		}
+		errCount = 0
+		c.Debug("rev pkt: %v seq: %v", pkt.CommandName, pkt.SequenceId)
+		atomic.AddUint64(&c.stat.PacketReceived, 1)
+		go func() {
+			defer func() {
+				if pan := recover(); pan != nil {
+					c.Error("panic on decoder %v : %v\n%s", pkt.CommandName, pan, debug.Stack())
+				}
+			}()
+
+			if decoder, ok := decoders[pkt.CommandName]; ok {
+				// found predefined decoder
+				info, ok := c.handlers.LoadAndDelete(pkt.SequenceId)
+				rsp, err := decoder(c, &incomingPacketInfo{
+					SequenceId:  pkt.SequenceId,
+					CommandName: pkt.CommandName,
+					Params: func() requestParams {
+						if !ok {
+							return nil
+						}
+						return info.params
+					}(),
+				}, payload)
+				if err != nil {
+					c.Debug("decode pkt %v error: %+v", pkt.CommandName, err)
+				}
+				if ok {
+					info.fun(rsp, err)
+				} else if f, ok := c.waiters.Load(pkt.CommandName); ok { // 在不存在handler的情况下触发wait
+					f.(func(interface{}, error))(rsp, err)
+				}
+			} else if f, ok := c.handlers.LoadAndDelete(pkt.SequenceId); ok {
+				// does not need decoder
+				f.fun(nil, nil)
+			} else {
+				c.Debug("Unhandled Command: %s\nSeq: %d\nThis message can be ignored.", pkt.CommandName, pkt.SequenceId)
+			}
+		}()
+	}
+}
diff --git a/client/online_push.go b/client/online_push.go
index ede6ca3a..5eb68040 100644
--- a/client/online_push.go
+++ b/client/online_push.go
@@ -32,7 +32,7 @@ func decodeOnlinePushReqPacket(c *QQClient, info *incomingPacketInfo, payload []
 	msgInfos := []jce.PushMessageInfo{}
 	uin := jr.ReadInt64(0)
 	jr.ReadSlice(&msgInfos, 2)
-	_ = c.send(c.buildDeleteOnlinePushPacket(uin, 0, nil, info.SequenceId, msgInfos))
+	_ = c.sendPacket(c.buildDeleteOnlinePushPacket(uin, 0, nil, info.SequenceId, msgInfos))
 	for _, m := range msgInfos {
 		k := fmt.Sprintf("%v%v%v", m.MsgSeq, m.MsgTime, m.MsgUid)
 		if _, ok := c.onlinePushCache.Get(k); ok {
diff --git a/client/private_msg.go b/client/private_msg.go
index a692322c..aa199448 100644
--- a/client/private_msg.go
+++ b/client/private_msg.go
@@ -40,12 +40,12 @@ func (c *QQClient) SendPrivateMessage(target int64, m *message.SendingMessage) *
 				seq = fseq
 			}
 			_, pkt := c.buildFriendSendingPacket(target, fseq, mr, int32(len(fragmented)), int32(i), div, t, elems)
-			_ = c.send(pkt)
+			_ = c.sendPacket(pkt)
 		}
 	} else {
 		seq = c.nextFriendSeq()
 		_, pkt := c.buildFriendSendingPacket(target, seq, mr, 1, 0, 0, t, m.Elements)
-		_ = c.send(pkt)
+		_ = c.sendPacket(pkt)
 	}
 	atomic.AddUint64(&c.stat.MessageSent, 1)
 	ret := &message.PrivateMessage{
@@ -85,7 +85,7 @@ func (c *QQClient) SendGroupTempMessage(groupCode, target int64, m *message.Send
 	seq := c.nextFriendSeq()
 	t := time.Now().Unix()
 	_, pkt := c.buildGroupTempSendingPacket(group.Uin, target, seq, mr, t, m)
-	_ = c.send(pkt)
+	_ = c.sendPacket(pkt)
 	atomic.AddUint64(&c.stat.MessageSent, 1)
 	return &message.TempMessage{
 		Id:        seq,
@@ -106,7 +106,7 @@ func (c *QQClient) sendWPATempMessage(target int64, sig []byte, m *message.Sendi
 	seq := c.nextFriendSeq()
 	t := time.Now().Unix()
 	_, pkt := c.buildWPATempSendingPacket(target, sig, seq, mr, t, m)
-	_ = c.send(pkt)
+	_ = c.sendPacket(pkt)
 	atomic.AddUint64(&c.stat.MessageSent, 1)
 	return &message.TempMessage{
 		Id:   seq,
diff --git a/client/sync.go b/client/sync.go
index 02249a0e..e3456805 100644
--- a/client/sync.go
+++ b/client/sync.go
@@ -98,7 +98,7 @@ func (c *QQClient) SyncSessions() (*SessionSyncResponse, error) {
 		}
 	})
 	_, pkt := c.buildSyncMsgRequestPacket()
-	if err := c.send(pkt); err != nil {
+	if err := c.sendPacket(pkt); err != nil {
 		stop()
 		return nil, err
 	}
@@ -414,7 +414,7 @@ func decodeC2CSyncPacket(c *QQClient, info *incomingPacketInfo, payload []byte)
 	if err := proto.Unmarshal(payload, &m); err != nil {
 		return nil, err
 	}
-	_ = c.send(c.buildDeleteOnlinePushPacket(c.Uin, m.GetSvrip(), m.GetPushToken(), info.SequenceId, nil))
+	_ = c.sendPacket(c.buildDeleteOnlinePushPacket(c.Uin, m.GetSvrip(), m.GetPushToken(), info.SequenceId, nil))
 	c.commMsgProcessor(m.Msg, info)
 	return nil, nil
 }