diff --git a/proto/engine.go b/proto/engine.go
index dcde9ea..04b3cba 100644
--- a/proto/engine.go
+++ b/proto/engine.go
@@ -99,6 +99,7 @@ func (e *Engine[T, K]) handler(params *qWebsocket.HandlerParams) {
 	}
 
 	req := &Request[T]{
+		Context:    context.Background(),
 		OpCode:     params.OpCode,
 		Writer:     params.Writer,
 		Conn:       params.WsConn,
@@ -142,6 +143,7 @@ func (e *Engine[T, K]) handler(params *qWebsocket.HandlerParams) {
 	}()
 
 	handler(req)
+
 }
 
 func (e *Engine[T, K]) UseHandler() qWebsocket.HandlerFunc {
diff --git a/proto/request.go b/proto/request.go
index 72ad70c..7d515fc 100644
--- a/proto/request.go
+++ b/proto/request.go
@@ -2,6 +2,7 @@ package proto
 
 import (
 	"bytes"
+	"context"
 	qWebsocket "github.com/RealFax/q-websocket"
 	"github.com/gobwas/ws"
 	"github.com/gobwas/ws/wsutil"
@@ -9,6 +10,7 @@ import (
 )
 
 type Request[T any] struct {
+	Context    context.Context
 	OpCode     ws.OpCode
 	Writer     io.Writer
 	Conn       *qWebsocket.Conn
diff --git a/server.go b/server.go
index c25125a..02dc960 100644
--- a/server.go
+++ b/server.go
@@ -14,7 +14,7 @@ import (
 )
 
 type Server struct {
-	connNum int64
+	connNum atomic.Int64
 	addr    string
 
 	ctx            context.Context
@@ -79,13 +79,13 @@ func (s *Server) setupTimeoutHandler() {
 		reason ttlcache.EvictionReason,
 		item *ttlcache.Item[string, gnet.Conn],
 	) {
-		atomic.AddInt64(&s.connNum, -1)
+		s.connNum.Add(-1)
 		upgraderConn, ok := item.Value().Context().(*Conn)
 		if !ok {
-			item.Value().Close()
+			_ = item.Value().Close()
 			return
 		}
-		s.closeWS(upgraderConn, ws.StatusGoingAway, errors.New("timeout"))
+		_ = s.closeWS(upgraderConn, ws.StatusGoingAway, errors.New("timeout"))
 	})
 
 	// start monitor connect ttl
@@ -97,7 +97,7 @@ func (s *Server) setupTimeoutHandler() {
 }
 
 func (s *Server) Online() int64 {
-	return atomic.LoadInt64(&s.connNum)
+	return s.connNum.Load()
 }
 
 func (s *Server) CountConnections() int {
@@ -108,6 +108,13 @@ func (s *Server) Stop(ctx context.Context) error {
 	return s.engine.Stop(ctx)
 }
 
+func (s *Server) ListenAndServe(opts ...gnet.Option) error {
+	s.setupTimeoutHandler()
+	return gnet.Run(s, s.addr, opts...)
+}
+
+// ---- gnet event handler ----
+
 func (s *Server) OnBoot(eng gnet.Engine) gnet.Action {
 	log.Printf("[+] Listen addr: %s", s.addr)
 	s.engine = eng
@@ -117,14 +124,14 @@ func (s *Server) OnBoot(eng gnet.Engine) gnet.Action {
 func (s *Server) OnShutdown(_ gnet.Engine) {}
 
 func (s *Server) OnOpen(c gnet.Conn) ([]byte, gnet.Action) {
-	atomic.AddInt64(&s.connNum, 1)
+	s.connNum.Add(1)
 	// monitor conn timeout
 	s.keepConnTable.Set(c.RemoteAddr().String(), c, ttlcache.DefaultTTL)
 	return nil, gnet.None
 }
 
 func (s *Server) OnClose(c gnet.Conn, _ error) gnet.Action {
-	atomic.AddInt64(&s.connNum, -1)
+	s.connNum.Add(-1)
 	// conn closed, remove conn in monitor list
 	s.keepConnTable.Delete(c.RemoteAddr().String())
 	return gnet.None
@@ -149,13 +156,13 @@ func (s *Server) OnTraffic(c gnet.Conn) gnet.Action {
 	}
 
 	// trying upgrader conn
-	if !upgraderConn.successUpgraded {
+	if !upgraderConn.successUpgraded.Load() {
 		if _, err := s.upgrader.Upgrade(upgraderConn); err != nil {
 			log.Printf("[-] upgrade error: %s, remote: %s\n", err.Error(), c.RemoteAddr())
-			s.closeWS(upgraderConn, ws.StatusProtocolError, err)
+			_ = s.closeWS(upgraderConn, ws.StatusProtocolError, err)
 			return gnet.Close
 		}
-		upgraderConn.successUpgraded = true
+		upgraderConn.successUpgraded.Store(true)
 		upgraderConn.UpdateActive()
 		return gnet.None
 	}
@@ -164,7 +171,7 @@ func (s *Server) OnTraffic(c gnet.Conn) gnet.Action {
 	messages, err := wsutil.ReadClientMessage(upgraderConn, nil)
 	if err != nil {
 		log.Printf("[-] read client message error: %s, remote: %s\n", err.Error(), c.RemoteAddr())
-		s.closeWS(upgraderConn, ws.StatusUnsupportedData, err)
+		_ = s.closeWS(upgraderConn, ws.StatusUnsupportedData, err)
 		return gnet.Close
 	}
 
@@ -173,13 +180,13 @@ func (s *Server) OnTraffic(c gnet.Conn) gnet.Action {
 		switch message.OpCode {
 		case ws.OpPing:
 			// async handle
-			s.workerPool.Submit(func() {
+			_ = s.workerPool.Submit(func() {
 				s.onPingHandler(upgraderConn)
 			})
 			upgraderConn.UpdateActive()
 		case ws.OpText, ws.OpBinary:
 			// async handle
-			s.workerPool.Submit(func() {
+			_ = s.workerPool.Submit(func() {
 				s.handler(&HandlerParams{
 					OpCode:  message.OpCode,
 					Request: message.Payload,
@@ -189,7 +196,7 @@ func (s *Server) OnTraffic(c gnet.Conn) gnet.Action {
 			})
 			upgraderConn.UpdateActive()
 		case ws.OpClose:
-			s.closeWS(upgraderConn, ws.StatusNormalClosure, nil)
+			_ = s.closeWS(upgraderConn, ws.StatusNormalClosure, nil)
 			return gnet.Close
 		}
 
@@ -197,11 +204,6 @@ func (s *Server) OnTraffic(c gnet.Conn) gnet.Action {
 	return gnet.None
 }
 
-func (s *Server) ListenAndServe(opts ...gnet.Option) error {
-	s.setupTimeoutHandler()
-	return gnet.Run(s, s.addr, opts...)
-}
-
 func NewServer(addr string, opts ...OptionFunc) *Server {
 	s := &Server{
 		addr: addr,
diff --git a/upgrader.go b/upgrader.go
index a032c48..fd29a8f 100644
--- a/upgrader.go
+++ b/upgrader.go
@@ -16,8 +16,8 @@ var (
 // Conn is upgraded websocket conn
 type Conn struct {
 	gnet.Conn
-	LastActive      int64 // atomic
-	successUpgraded bool
+	LastActive      *atomic.Int64 // atomic
+	successUpgraded *atomic.Bool
 	ID              string
 
 	ctx context.Context
@@ -32,14 +32,16 @@ func (c *Conn) SetContext(ctx context.Context) {
 }
 
 func (c *Conn) UpdateActive() {
-	atomic.StoreInt64(&c.LastActive, time.Now().Unix())
+	c.LastActive.Store(time.Now().Unix())
 }
 
 func NewUpgraderConn(conn gnet.Conn) *Conn {
+	lastActive := &atomic.Int64{}
+	lastActive.Store(time.Now().Unix())
 	return &Conn{
 		Conn:            conn,
-		LastActive:      time.Now().Unix(),
-		successUpgraded: false,
+		LastActive:      lastActive,
+		successUpgraded: &atomic.Bool{},
 		ID:              uuid.New().String(),
 		ctx:             context.Background(),
 	}