diff --git a/server.go b/server.go
index 7c1de37..e52e95b 100644
--- a/server.go
+++ b/server.go
@@ -154,11 +154,11 @@ func (s *server) handleError(ctx *fasthttp.RequestCtx, status int, reason error)
 	s.sh.OnError(ctx, status, reason)
 }
 
-func handleConnection(s *server, soc *Socket, socketHandler SocketHandler) {
+func handleConnection(s *server, soc Socket, socketHandler SocketHandler) {
 	defer s.stopWg.Done()
 
 	logging.Logger().Debug(fmt.Sprintf("Server: Client[%s] is connected.", soc.RemoteAddr()))
-	socketHandler.OnConnect(soc)
+	soc = socketHandler.OnConnect(soc)
 
 	clientStopChan := make(chan struct{})
 	handleDoneChan := make(chan struct{})
diff --git a/socket.go b/socket.go
index 39280c6..9dd3fcb 100644
--- a/socket.go
+++ b/socket.go
@@ -7,9 +7,148 @@ import (
 	"time"
 
 	"git.loafle.net/commons_go/websocket_fasthttp/websocket"
+	"github.com/valyala/fasthttp"
 )
 
-func newSocket(id string, conn *websocket.Conn, sh SocketHandler) *Socket {
+type Socket interface {
+	// ID returns the identity of the client.
+	ID() string
+	// GetAttribute returns a attribute for the key.
+	GetAttribute(key interface{}) interface{}
+	// SetAttribute store a attribute for the key.
+	SetAttribute(key interface{}, value interface{})
+	// WaitRequest wait request of client.
+	WaitRequest() (*SocketConn, error)
+
+	// Subprotocol returns the negotiated protocol for the connection.
+	Subprotocol() string
+
+	// Close closes the underlying network connection without sending or waiting for a close frame.
+	Close() error
+
+	// LocalAddr returns the local network address.
+	LocalAddr() net.Addr
+
+	// RemoteAddr returns the remote network address.
+	RemoteAddr() net.Addr
+
+	// WriteControl writes a control message with the given deadline. The allowed
+	// message types are CloseMessage, PingMessage and PongMessage.
+	WriteControl(messageType int, data []byte, deadline time.Time) error
+
+	// NextWriter returns a writer for the next message to send. The writer's Close
+	// method flushes the complete message to the network.
+	//
+	// There can be at most one open writer on a connection. NextWriter closes the
+	// previous writer if the application has not already done so.
+	NextWriter(messageType int) (io.WriteCloser, error)
+
+	// WritePreparedMessage writes prepared message into connection.
+	WritePreparedMessage(pm *websocket.PreparedMessage) error
+
+	// WriteMessage is a helper method for getting a writer using NextWriter,
+	// writing the message and closing the writer.
+	WriteMessage(messageType int, data []byte) error
+
+	// SetWriteDeadline sets the write deadline on the underlying network
+	// connection. After a write has timed out, the websocket state is corrupt and
+	// all future writes will return an error. A zero value for t means writes will
+	// not time out.
+	SetWriteDeadline(t time.Time) error
+
+	// NextReader returns the next data message received from the peer. The
+	// returned messageType is either TextMessage or BinaryMessage.
+	//
+	// There can be at most one open reader on a connection. NextReader discards
+	// the previous message if the application has not already consumed it.
+	//
+	// Applications must break out of the application's read loop when this method
+	// returns a non-nil error value. Errors returned from this method are
+	// permanent. Once this method returns a non-nil error, all subsequent calls to
+	// this method return the same error.
+	NextReader() (messageType int, r io.Reader, err error)
+
+	// ReadMessage is a helper method for getting a reader using NextReader and
+	// reading from that reader to a buffer.
+	ReadMessage() (messageType int, p []byte, err error)
+
+	// SetReadDeadline sets the read deadline on the underlying network connection.
+	// After a read has timed out, the websocket connection state is corrupt and
+	// all future reads will return an error. A zero value for t means reads will
+	// not time out.
+	SetReadDeadline(t time.Time) error
+
+	// SetReadLimit sets the maximum size for a message read from the peer. If a
+	// message exceeds the limit, the connection sends a close frame to the peer
+	// and returns ErrReadLimit to the application.
+	SetReadLimit(limit int64)
+
+	// CloseHandler returns the current close handler
+	CloseHandler() func(code int, text string) error
+
+	// SetCloseHandler sets the handler for close messages received from the peer.
+	// The code argument to h is the received close code or CloseNoStatusReceived
+	// if the close message is empty. The default close handler sends a close frame
+	// back to the peer.
+	//
+	// The application must read the connection to process close messages as
+	// described in the section on Control Frames above.
+	//
+	// The connection read methods return a CloseError when a close frame is
+	// received. Most applications should handle close messages as part of their
+	// normal error handling. Applications should only set a close handler when the
+	// application must perform some action before sending a close frame back to
+	// the peer.
+	SetCloseHandler(h func(code int, text string) error)
+
+	// PingHandler returns the current ping handler
+	PingHandler() func(appData string) error
+
+	// SetPingHandler sets the handler for ping messages received from the peer.
+	// The appData argument to h is the PING frame application data. The default
+	// ping handler sends a pong to the peer.
+	//
+	// The application must read the connection to process ping messages as
+	// described in the section on Control Frames above.
+	SetPingHandler(h func(appData string) error)
+
+	// PongHandler returns the current pong handler
+	PongHandler() func(appData string) error
+
+	// SetPongHandler sets the handler for pong messages received from the peer.
+	// The appData argument to h is the PONG frame application data. The default
+	// pong handler does nothing.
+	//
+	// The application must read the connection to process ping messages as
+	// described in the section on Control Frames above.
+	SetPongHandler(h func(appData string) error)
+
+	// UnderlyingConn returns the internal net.Conn. This can be used to further
+	// modifications to connection specific flags.
+	UnderlyingConn() net.Conn
+
+	// EnableWriteCompression enables and disables write compression of
+	// subsequent text and binary messages. This function is a noop if
+	// compression was not negotiated with the peer.
+	EnableWriteCompression(enable bool)
+
+	// SetCompressionLevel sets the flate compression level for subsequent text and
+	// binary messages. This function is a noop if compression was not negotiated
+	// with the peer. See the compress/flate package for a description of
+	// compression levels.
+	SetCompressionLevel(level int) error
+
+	// SetHeaders sets request headers
+	SetHeaders(h *fasthttp.RequestHeader)
+
+	// Header returns header by key
+	Header(key string) (value string)
+
+	// Headers returns the RequestHeader struct
+	Headers() *fasthttp.RequestHeader
+}
+
+func newSocket(id string, conn *websocket.Conn, sh SocketHandler) Socket {
 	s := retainSocket()
 	s.Conn = conn
 	s.sh = sh
@@ -22,7 +161,7 @@ func newSocket(id string, conn *websocket.Conn, sh SocketHandler) *Socket {
 	return s
 }
 
-type Socket struct {
+type fasthttpSocket struct {
 	*websocket.Conn
 	sh SocketHandler
 
@@ -32,25 +171,25 @@ type Socket struct {
 	sc *SocketConn
 }
 
-func (s *Socket) ID() string {
+func (s *fasthttpSocket) ID() string {
 	return s.id
 }
 
-func (s *Socket) GetAttribute(key interface{}) interface{} {
+func (s *fasthttpSocket) GetAttribute(key interface{}) interface{} {
 	if nil == s.attributes {
 		return nil
 	}
 	return s.attributes[key]
 }
 
-func (s *Socket) SetAttribute(key interface{}, value interface{}) {
+func (s *fasthttpSocket) SetAttribute(key interface{}, value interface{}) {
 	if nil == s.attributes {
 		s.attributes = make(map[interface{}]interface{})
 	}
 	s.attributes[key] = value
 }
 
-func (s *Socket) WaitRequest() (*SocketConn, error) {
+func (s *fasthttpSocket) WaitRequest() (*SocketConn, error) {
 	if nil != s.sc {
 		releaseSocketConn(s.sc)
 		s.sc = nil
@@ -72,7 +211,7 @@ func (s *Socket) WaitRequest() (*SocketConn, error) {
 	return s.sc, nil
 }
 
-func (s *Socket) NextWriter(messageType int) (io.WriteCloser, error) {
+func (s *fasthttpSocket) NextWriter(messageType int) (io.WriteCloser, error) {
 	if 0 < s.sh.GetWriteTimeout() {
 		s.SetWriteDeadline(time.Now().Add(s.sh.GetWriteTimeout() * time.Second))
 	}
@@ -80,7 +219,7 @@ func (s *Socket) NextWriter(messageType int) (io.WriteCloser, error) {
 	return s.Conn.NextWriter(messageType)
 }
 
-func (s *Socket) WriteMessage(messageType int, data []byte) error {
+func (s *fasthttpSocket) WriteMessage(messageType int, data []byte) error {
 	if 0 < s.sh.GetWriteTimeout() {
 		s.SetWriteDeadline(time.Now().Add(s.sh.GetWriteTimeout() * time.Second))
 	}
@@ -88,7 +227,7 @@ func (s *Socket) WriteMessage(messageType int, data []byte) error {
 	return s.Conn.WriteMessage(messageType, data)
 }
 
-func (s *Socket) Close() error {
+func (s *fasthttpSocket) Close() error {
 	err := s.Conn.Close()
 	releaseSocket(s)
 	return err
@@ -97,7 +236,7 @@ func (s *Socket) Close() error {
 type SocketConn struct {
 	net.Conn
 
-	s *Socket
+	s *fasthttpSocket
 
 	MessageType int
 	r           io.Reader
@@ -152,15 +291,15 @@ func (sc *SocketConn) SetWriteDeadline(t time.Time) error {
 
 var socketPool sync.Pool
 
-func retainSocket() *Socket {
+func retainSocket() *fasthttpSocket {
 	v := socketPool.Get()
 	if v == nil {
-		return &Socket{}
+		return &fasthttpSocket{}
 	}
-	return v.(*Socket)
+	return v.(*fasthttpSocket)
 }
 
-func releaseSocket(s *Socket) {
+func releaseSocket(s *fasthttpSocket) {
 	s.sh = nil
 	s.sc = nil
 	s.id = ""
diff --git a/socket_handler.go b/socket_handler.go
index f61224d..f791596 100644
--- a/socket_handler.go
+++ b/socket_handler.go
@@ -24,20 +24,21 @@ type SocketHandler interface {
 	// OnConnect invoked when client is connected
 	// If you override ths method, must call
 	//
-	// func (sh *SocketHandler) OnConnect(soc *cwf.Socket) {
-	// 	sh.SocketHandlers.OnConnect(soc)
+	// func (sh *SocketHandler) OnConnect(soc cwf.Socket) cwf.Socket {
 	//  ...
+	//  newSoc := ...
+	// 	return sh.SocketHandlers.OnConnect(newSoc)
 	// }
-	OnConnect(soc *Socket)
-	Handle(soc *Socket, stopChan <-chan struct{}, doneChan chan<- struct{})
+	OnConnect(soc Socket) Socket
+	Handle(soc Socket, stopChan <-chan struct{}, doneChan chan<- struct{})
 	// OnDisconnect invoked when client is disconnected
 	// If you override ths method, must call
 	//
-	// func (sh *SocketHandler) OnDisconnect(soc *cwf.Socket) {
+	// func (sh *SocketHandler) OnDisconnect(soc cwf.Socket) {
 	//  ...
 	// 	sh.SocketHandlers.OnDisconnect(soc)
 	// }
-	OnDisconnect(soc *Socket)
+	OnDisconnect(soc Socket)
 	// Destroy invoked when server is stopped
 	// If you override ths method, must call
 	//
@@ -47,8 +48,8 @@ type SocketHandler interface {
 	// }
 	Destroy()
 
-	GetSocket(id string) *Socket
-	GetSockets() map[string]*Socket
+	GetSocket(id string) Socket
+	GetSockets() map[string]Socket
 
 	GetMaxMessageSize() int64
 	GetWriteTimeout() time.Duration
diff --git a/socket_handlers.go b/socket_handlers.go
index 0cc662e..28dc67f 100644
--- a/socket_handlers.go
+++ b/socket_handlers.go
@@ -26,11 +26,11 @@ type SocketHandlers struct {
 	PingTimeout time.Duration
 	PingPeriod  time.Duration
 
-	sockets map[string]*Socket
+	sockets map[string]Socket
 }
 
 func (sh *SocketHandlers) Init() error {
-	sh.sockets = make(map[string]*Socket)
+	sh.sockets = make(map[string]Socket)
 
 	return nil
 }
@@ -39,15 +39,16 @@ func (sh *SocketHandlers) Handshake(ctx *fasthttp.RequestCtx) (id string, extens
 	return "", nil
 }
 
-func (sh *SocketHandlers) OnConnect(soc *Socket) {
+func (sh *SocketHandlers) OnConnect(soc Socket) Socket {
 	sh.sockets[soc.ID()] = soc
+	return soc
 }
 
-func (sh *SocketHandlers) Handle(soc *Socket, stopChan <-chan struct{}, doneChan chan<- struct{}) {
+func (sh *SocketHandlers) Handle(soc Socket, stopChan <-chan struct{}, doneChan chan<- struct{}) {
 	// no op
 }
 
-func (sh *SocketHandlers) OnDisconnect(soc *Socket) {
+func (sh *SocketHandlers) OnDisconnect(soc Socket) {
 	delete(sh.sockets, soc.ID())
 }
 
@@ -55,10 +56,10 @@ func (sh *SocketHandlers) Destroy() {
 	// no op
 }
 
-func (sh *SocketHandlers) GetSocket(id string) *Socket {
+func (sh *SocketHandlers) GetSocket(id string) Socket {
 	return sh.sockets[id]
 }
-func (sh *SocketHandlers) GetSockets() map[string]*Socket {
+func (sh *SocketHandlers) GetSockets() map[string]Socket {
 	return sh.sockets
 }