diff --git a/README.md b/README.md
new file mode 100644
index 0000000..94bed01
--- /dev/null
+++ b/README.md
@@ -0,0 +1,5 @@
+# NNet 轻量级 TCP/WS/UDP 网络库
+
+===
+
+> 封装了
\ No newline at end of file
diff --git a/component/util.go b/component/util.go
index f6c5d06..660a302 100644
--- a/component/util.go
+++ b/component/util.go
@@ -1,16 +1,16 @@
 package component
 
 import (
-	"git.noahlan.cn/northlan/nnet/nface"
 	"reflect"
 	"unicode"
 	"unicode/utf8"
 )
 
 var (
-	typeOfError      = reflect.TypeOf((*error)(nil)).Elem()
-	typeOfBytes      = reflect.TypeOf(([]byte)(nil))
-	typeOfConnection = reflect.TypeOf((nface.IConnection)(nil))
+	typeOfError = reflect.TypeOf((*error)(nil)).Elem()
+	typeOfBytes = reflect.TypeOf(([]byte)(nil))
+	// TODO cycle not allow IConnection
+	typeOfConnection = reflect.TypeOf(([]byte)(nil))
 )
 
 func isExported(name string) bool {
diff --git a/core/config.go b/core/config.go
new file mode 100644
index 0000000..4b5547d
--- /dev/null
+++ b/core/config.go
@@ -0,0 +1,26 @@
+package core
+
+const (
+	// DevMode means development mode.
+	DevMode = "dev"
+	// TestMode means test mode.
+	TestMode = "test"
+	// ProductionMode means production mode.
+	ProductionMode = "prod"
+)
+
+type (
+	EngineConf struct {
+		// Protocol 协议名
+		// "tcp", "tcp4", "tcp6", "unix" or "unixpacket"
+		// 若只想开启IPv4, 使用tcp4即可
+		Protocol string
+		// Addr 服务地址
+		// 地址可直接使用hostname,但强烈不建议这样做,可能会同时监听多个本地IP
+		// 如果端口号不填或端口号为0，例如："127.0.0.1:" 或 ":0"，服务端将选择随机可用端口
+		Addr string
+		// Name 服务端名称，默认为n-net
+		Name string
+		Mode string
+	}
+)
diff --git a/core/connection.go b/core/connection.go
new file mode 100644
index 0000000..e704836
--- /dev/null
+++ b/core/connection.go
@@ -0,0 +1,283 @@
+package core
+
+import (
+	"errors"
+	"fmt"
+	"git.noahlan.cn/northlan/nnet/internal/log"
+	"git.noahlan.cn/northlan/nnet/internal/packet"
+	"git.noahlan.cn/northlan/nnet/internal/pool"
+	"git.noahlan.cn/northlan/nnet/scheduler"
+	"git.noahlan.cn/northlan/nnet/session"
+	"net"
+	"sync/atomic"
+	"time"
+)
+
+var (
+	ErrCloseClosedSession = errors.New("close closed session")
+	// ErrBrokenPipe represents the low-level connection has broken.
+	ErrBrokenPipe = errors.New("broken low-level pipe")
+	// ErrBufferExceed indicates that the current session buffer is full and
+	// can not receive more data.
+	ErrBufferExceed = errors.New("session send buffer exceed")
+)
+
+const (
+	// StatusStart 开始阶段
+	StatusStart int32 = iota + 1
+	// StatusPrepare 准备阶段
+	StatusPrepare
+	// StatusPending 等待工作阶段
+	StatusPending
+	// StatusWorking 工作阶段
+	StatusWorking
+	// StatusClosed 连接关闭
+	StatusClosed
+)
+
+type (
+	Connection struct {
+		session *session.Session // Session
+		ngin    *engine          // engine
+
+		conn    net.Conn // low-level conn fd
+		status  int32    // 连接状态
+		lastMid uint64   // 最近一次消息ID
+		// TODO 考虑独立出去作为一个中间件
+		lastHeartbeatAt int64 // 最近一次心跳时间
+
+		chDie   chan struct{}       // 停止通道
+		chSend  chan pendingMessage // 消息发送通道（结构化消息）
+		chWrite chan []byte         // 消息发送通道（二进制消息）
+	}
+
+	pendingMessage struct {
+		header  interface{}
+		payload interface{}
+	}
+)
+
+func newConn(server *engine, conn net.Conn) *Connection {
+	r := &Connection{
+		conn:   conn,
+		ngin:   server,
+		status: StatusStart,
+
+		lastHeartbeatAt: time.Now().Unix(),
+
+		chDie:   make(chan struct{}),
+		chSend:  make(chan pendingMessage, 128),
+		chWrite: make(chan []byte, 128),
+	}
+
+	// binding session
+	r.session = session.NewSession()
+	return r
+}
+
+func (r *Connection) Send(header, payload interface{}) (err error) {
+	defer func() {
+		if e := recover(); e != nil {
+			err = ErrBrokenPipe
+		}
+	}()
+	r.chSend <- pendingMessage{
+		header:  header,
+		payload: payload,
+	}
+	return err
+}
+
+func (r *Connection) SendBytes(data []byte) (err error) {
+	defer func() {
+		if e := recover(); e != nil {
+			err = ErrBrokenPipe
+		}
+	}()
+	r.chWrite <- data
+	return err
+}
+
+func (r *Connection) Status() int32 {
+	return atomic.LoadInt32(&r.status)
+}
+
+func (r *Connection) SetStatus(s int32) {
+	atomic.StoreInt32(&r.status, s)
+}
+
+func (r *Connection) Conn() net.Conn {
+	return r.conn
+}
+
+func (r *Connection) ID() int64 {
+	return r.session.ID()
+}
+
+func (r *Connection) SetLastHeartbeatAt(t int64) {
+	atomic.StoreInt64(&r.lastHeartbeatAt, t)
+}
+
+func (r *Connection) Session() *session.Session {
+	return r.session
+}
+
+func (r *Connection) LastMID() uint64 {
+	return r.lastMid
+}
+
+func (r *Connection) SetLastMID(mid uint64) {
+	atomic.StoreUint64(&r.lastMid, mid)
+}
+
+func (r *Connection) serve() {
+	_ = pool.SubmitConn(func() {
+		r.write()
+	})
+
+	_ = pool.SubmitWorker(func() {
+		r.read()
+	})
+}
+
+func (r *Connection) write() {
+	ticker := time.NewTicker(r.ngin.heartbeatInterval)
+
+	defer func() {
+		ticker.Stop()
+		close(r.chSend)
+		close(r.chWrite)
+		_ = r.Close()
+
+		log.Debugf("Connection write goroutine exit, ConnID=%d, SessionUID=%s", r.ID(), r.session.UID())
+	}()
+
+	for {
+		select {
+		case <-ticker.C:
+			// TODO heartbeat enable control
+			deadline := time.Now().Add(-2 * r.ngin.heartbeatInterval).Unix()
+			if atomic.LoadInt64(&r.lastHeartbeatAt) < deadline {
+				log.Debugf("Session heartbeat timeout, LastTime=%d, Deadline=%d", atomic.LoadInt64(&r.lastHeartbeatAt), deadline)
+				return
+			}
+			// TODO heartbeat data
+			r.chWrite <- []byte{}
+		case data := <-r.chSend:
+			// marshal packet body (data)
+			if r.ngin.serializer == nil {
+				if _, ok := data.payload.([]byte); !ok {
+					log.Errorf("serializer is nil, but payload type not []byte")
+					break
+				}
+			} else {
+				payload, err := r.ngin.serializer.Marshal(data.payload)
+				if err != nil {
+					log.Errorf("message body marshal err: %v", err)
+					break
+				}
+				data.payload = payload
+			}
+
+			// invoke pipeline
+			if pipe := r.ngin.pipeline; pipe != nil {
+				err := pipe.Outbound().Process(r, data)
+				if err != nil {
+					log.Errorf("broken pipeline err: %s", err.Error())
+					break
+				}
+			}
+
+			// packet pack data
+			p, err := r.ngin.packer.Pack(data.header, data.payload.([]byte))
+			if err != nil {
+				log.Error(err.Error())
+				break
+			}
+			r.chWrite <- p
+		case data := <-r.chWrite:
+			// 回写数据
+			if _, err := r.conn.Write(data); err != nil {
+				log.Error(err.Error())
+				return
+			}
+		case <-r.chDie: // connection close signal
+			return
+		case <-r.ngin.dieChan: // application quit signal
+			return
+		}
+	}
+}
+
+func (r *Connection) read() {
+	defer func() {
+		r.Close()
+	}()
+
+	buf := make([]byte, 4096)
+	for {
+		n, err := r.conn.Read(buf)
+		if err != nil {
+			log.Errorf("Read message error: %s, session will be closed immediately", err.Error())
+			return
+		}
+
+		if r.ngin.packer == nil {
+			log.Errorf("unexpected error: packer is nil")
+			return
+		}
+
+		// warning: 为性能考虑，复用slice处理数据，buf传入后必须要copy再处理
+		packets, err := r.ngin.packer.Unpack(buf[:n])
+		if err != nil {
+			log.Error(err.Error())
+		}
+		// packets 处理
+		for _, p := range packets {
+			if err := r.processPacket(p); err != nil {
+				log.Error(err.Error())
+				continue
+			}
+		}
+	}
+}
+
+func (r *Connection) processPacket(packet packet.IPacket) error {
+	if pipe := r.ngin.pipeline; pipe != nil {
+		err := pipe.Inbound().Process(r, packet)
+		if err != nil {
+			return errors.New(fmt.Sprintf("pipeline process failed: %v", err.Error()))
+		}
+	}
+
+	// packet processor
+	err := r.ngin.processor.Process(r, packet)
+	if err != nil {
+		return err
+	}
+
+	if r.Status() == StatusWorking {
+		// HandleFunc
+		_ = pool.SubmitWorker(func() {
+			r.ngin.handler.Handle(r, packet)
+		})
+	}
+	return err
+}
+
+func (r *Connection) Close() error {
+	if r.Status() == StatusClosed {
+		return ErrCloseClosedSession
+	}
+	r.SetStatus(StatusClosed)
+
+	log.Debugf("close connection, ID: %d", r.ID())
+
+	select {
+	case <-r.chDie:
+	default:
+		close(r.chDie)
+		scheduler.PushTask(func() { Lifetime.Close(r) })
+	}
+	return r.conn.Close()
+}
diff --git a/core/engine.go b/core/engine.go
new file mode 100644
index 0000000..d333126
--- /dev/null
+++ b/core/engine.go
@@ -0,0 +1,249 @@
+package core
+
+import (
+	"errors"
+	"git.noahlan.cn/northlan/nnet/internal/log"
+	"git.noahlan.cn/northlan/nnet/internal/packet"
+	"git.noahlan.cn/northlan/nnet/internal/pool"
+	"git.noahlan.cn/northlan/nnet/scheduler"
+	"git.noahlan.cn/northlan/nnet/serialize"
+	"git.noahlan.cn/northlan/nnet/session"
+	"github.com/gorilla/websocket"
+	"net"
+	"net/http"
+	"os"
+	"os/signal"
+	"strings"
+	"syscall"
+	"time"
+)
+
+func NotFound(conn *Connection, packet packet.IPacket) {
+	log.Error("handler not found")
+	conn.SendBytes([]byte("handler not found"))
+}
+
+func NotFoundHandler() Handler {
+	return HandlerFunc(NotFound)
+}
+
+type (
+	// engine TCP-engine
+	engine struct {
+		conf        EngineConf   // conf 配置
+		middlewares []Middleware // 中间件
+		routes      []Route      // 路由
+		// handler 消息处理器
+		handler Handler
+		// dieChan 应用程序退出信号
+		dieChan chan struct{}
+		// sessionMgr session管理器
+		sessionMgr *session.Manager
+
+		pipeline Pipeline // 消息管道
+
+		packer     packet.Packer        // 封包、拆包器
+		processor  Processor            // 数据包处理器
+		serializer serialize.Serializer // 消息 序列化/反序列化
+
+		retryInterval     time.Duration // 消息重试间隔时长
+		heartbeatInterval time.Duration // 心跳间隔，0表示不进行心跳
+		wsOpt             wsOptions     // websocket
+	}
+
+	wsOptions struct {
+		IsWebsocket    bool                     // 是否为websocket服务端
+		WebsocketPath  string                   // ws地址(ws://127.0.0.1/WebsocketPath)
+		TLSCertificate string                   // TLS 证书地址 (websocket)
+		TLSKey         string                   // TLS 证书key地址 (websocket)
+		CheckOrigin    func(*http.Request) bool // check origin
+	}
+)
+
+func newEngine(conf EngineConf) *engine {
+	s := &engine{
+		conf:       conf,
+		dieChan:    make(chan struct{}),
+		sessionMgr: session.NewSessionMgr(),
+	}
+
+	pool.InitPool(10000)
+
+	return s
+}
+
+func (ng *engine) use(middleware Middleware) {
+	ng.middlewares = append(ng.middlewares, middleware)
+}
+
+func (ng *engine) addRoutes(route ...Route) {
+	ng.routes = append(ng.routes, route...)
+}
+
+func (ng *engine) bindRoutes(router Router) error {
+	for _, fr := range ng.routes {
+		if err := ng.bindRoute(router, fr); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (ng *engine) bindRoute(router Router, route Route) error {
+	// TODO default middleware
+	chain := newChain()
+	// build chain
+	for _, middleware := range ng.middlewares {
+		chain.Append(convertMiddleware(middleware))
+	}
+	return router.Register(route.Matches, route.Handler)
+}
+
+func convertMiddleware(ware Middleware) func(Handler) Handler {
+	return func(next Handler) Handler {
+		return ware(next.Handle)
+	}
+}
+
+func (ng *engine) serve(router Router) error {
+	ng.handler = router
+
+	if err := ng.bindRoutes(router); err != nil {
+		return err
+	}
+
+	go func() {
+		if ng.wsOpt.IsWebsocket {
+			if len(ng.wsOpt.TLSCertificate) != 0 && len(ng.wsOpt.TLSKey) != 0 {
+				ng.listenAndServeWSTLS()
+			} else {
+				ng.listenAndServeWS()
+			}
+		} else {
+			ng.listenAndServe()
+		}
+	}()
+
+	go scheduler.Schedule()
+
+	sg := make(chan os.Signal)
+	signal.Notify(sg, syscall.SIGINT, syscall.SIGQUIT, syscall.SIGKILL, syscall.SIGTERM)
+
+	select {
+	case <-ng.dieChan:
+		log.Info("Server will shutdown in a few seconds")
+	case s := <-sg:
+		log.Infof("Server got signal: %ng", s)
+	}
+
+	log.Info("Server is stopping...")
+
+	ng.shutdown()
+	scheduler.Close()
+
+	return nil
+}
+
+func (ng *engine) close() {
+	close(ng.dieChan)
+}
+
+func (ng *engine) shutdown() {
+}
+
+func (ng *engine) listenAndServe() {
+	listener, err := net.Listen(ng.conf.Protocol, ng.conf.Addr)
+	if err != nil {
+		panic(err)
+	}
+
+	// 监听成功，服务已启动
+	log.Infof("now listening %s on %s.", ng.conf.Protocol, ng.conf.Addr)
+	defer func() {
+		listener.Close()
+		ng.close()
+	}()
+
+	for {
+		conn, err := listener.Accept()
+		if err != nil {
+			if errors.Is(err, net.ErrClosed) {
+				log.Errorf("服务器网络错误 %+v", err)
+				return
+			}
+			log.Errorf("监听错误 %v", err)
+			continue
+		}
+
+		err = pool.SubmitConn(func() {
+			ng.handle(conn)
+		})
+		if err != nil {
+			log.Errorf("submit conn pool err: %ng", err.Error())
+			continue
+		}
+	}
+}
+
+func (ng *engine) listenAndServeWS() {
+	ng.setupWS()
+	if err := http.ListenAndServe(ng.conf.Addr, nil); err != nil {
+		log.Fatal(err.Error())
+	}
+}
+
+func (ng *engine) listenAndServeWSTLS() {
+	ng.setupWS()
+	if err := http.ListenAndServeTLS(ng.conf.Addr, ng.wsOpt.TLSCertificate, ng.wsOpt.TLSKey, nil); err != nil {
+		log.Fatal(err.Error())
+	}
+}
+
+func (ng *engine) setupWS() {
+	upgrade := websocket.Upgrader{
+		ReadBufferSize:  1024,
+		WriteBufferSize: 1024,
+		CheckOrigin:     ng.wsOpt.CheckOrigin,
+	}
+	http.HandleFunc("/"+strings.TrimPrefix(ng.wsOpt.WebsocketPath, "/"), func(w http.ResponseWriter, r *http.Request) {
+		conn, err := upgrade.Upgrade(w, r, nil)
+		if err != nil {
+			log.Errorf("Upgrade failure, URI=%ng, Error=%ng", r.RequestURI, err.Error())
+			return
+		}
+		err = pool.SubmitConn(func() {
+			ng.handleWS(conn)
+		})
+		if err != nil {
+			log.Fatalf("submit conn pool err: %ng", err.Error())
+		}
+	})
+}
+
+func (ng *engine) handleWS(conn *websocket.Conn) {
+	c, err := newWSConn(conn)
+	if err != nil {
+		log.Error(err)
+		return
+	}
+	ng.handle(c)
+}
+
+func (ng *engine) handle(conn net.Conn) {
+	connection := newConn(ng, conn)
+	ng.sessionMgr.StoreSession(connection.Session())
+
+	connection.serve()
+	// hook
+}
+
+func (ng *engine) notFoundHandler(next Handler) Handler {
+	return HandlerFunc(func(conn *Connection, packet packet.IPacket) {
+		h := next
+		if next == nil {
+			h = NotFoundHandler()
+		}
+		// TODO write to client
+		h.Handle(conn, packet)
+	})
+}
diff --git a/core/lifetime.go b/core/lifetime.go
new file mode 100644
index 0000000..964abba
--- /dev/null
+++ b/core/lifetime.go
@@ -0,0 +1,40 @@
+package core
+
+type (
+	LifetimeHandler func(conn *Connection)
+
+	lifetime struct {
+		onOpen   []LifetimeHandler
+		onClosed []LifetimeHandler
+	}
+)
+
+var Lifetime = &lifetime{}
+
+func (lt *lifetime) OnClosed(h LifetimeHandler) {
+	lt.onClosed = append(lt.onClosed, h)
+}
+
+func (lt *lifetime) OnOpen(h LifetimeHandler) {
+	lt.onOpen = append(lt.onOpen, h)
+}
+
+func (lt *lifetime) Open(conn *Connection) {
+	if len(lt.onOpen) <= 0 {
+		return
+	}
+
+	for _, handler := range lt.onOpen {
+		handler(conn)
+	}
+}
+
+func (lt *lifetime) Close(conn *Connection) {
+	if len(lt.onClosed) <= 0 {
+		return
+	}
+
+	for _, handler := range lt.onClosed {
+		handler(conn)
+	}
+}
diff --git a/core/nnet_router.go b/core/nnet_router.go
new file mode 100644
index 0000000..ce97f30
--- /dev/null
+++ b/core/nnet_router.go
@@ -0,0 +1,49 @@
+package core
+
+import (
+	"errors"
+	"git.noahlan.cn/northlan/nnet/internal/log"
+	"git.noahlan.cn/northlan/nnet/internal/packet"
+)
+
+type nNetRouter struct {
+	handlers map[string]Handler
+	notFound Handler
+}
+
+func NewRouter() Router {
+	return &nNetRouter{
+		handlers: make(map[string]Handler),
+	}
+}
+
+func (r *nNetRouter) Handle(conn *Connection, p packet.IPacket) {
+	pkg, ok := p.(*packet.Packet)
+	if !ok {
+		log.Error(packet.ErrWrongMessage)
+		return
+	}
+	handler, ok := r.handlers[pkg.Header.Route]
+	if !ok {
+		if r.notFound == nil {
+			log.Error("message handler not found")
+			return
+		}
+		r.notFound.Handle(conn, p)
+		return
+	}
+	handler.Handle(conn, p)
+}
+
+func (r *nNetRouter) Register(matches interface{}, handler Handler) error {
+	route, ok := matches.(string)
+	if !ok {
+		return errors.New("the type of matches must be string")
+	}
+	r.handlers[route] = handler
+	return nil
+}
+
+func (r *nNetRouter) SetNotFoundHandler(handler Handler) {
+	r.notFound = handler
+}
diff --git a/pipeline/pipeline.go b/core/pipeline.go
similarity index 84%
rename from pipeline/pipeline.go
rename to core/pipeline.go
index ae30d04..994ec50 100644
--- a/pipeline/pipeline.go
+++ b/core/pipeline.go
@@ -1,12 +1,11 @@
-package pipeline
+package core
 
 import (
-	"git.noahlan.cn/northlan/nnet/nface"
 	"sync"
 )
 
 type (
-	Func func(nface.IConnection) error
+	Func func(conn *Connection, v interface{}) error
 
 	// Pipeline 消息管道
 	Pipeline interface {
@@ -21,7 +20,7 @@ type (
 	Channel interface {
 		PushFront(h Func)
 		PushBack(h Func)
-		Process(nface.IConnection) error
+		Process(conn *Connection, v interface{}) error
 	}
 
 	pipelineChannel struct {
@@ -66,7 +65,7 @@ func (p *pipelineChannel) PushBack(h Func) {
 }
 
 // Process 处理所有的pipeline方法
-func (p *pipelineChannel) Process(conn nface.IConnection) error {
+func (p *pipelineChannel) Process(conn *Connection, v interface{}) error {
 	p.mu.RLock()
 	defer p.mu.RUnlock()
 
@@ -75,7 +74,7 @@ func (p *pipelineChannel) Process(conn nface.IConnection) error {
 	}
 
 	for _, handler := range p.handlers {
-		err := handler(conn)
+		err := handler(conn, v)
 		if err != nil {
 			return err
 		}
diff --git a/core/processor.go b/core/processor.go
new file mode 100644
index 0000000..403818e
--- /dev/null
+++ b/core/processor.go
@@ -0,0 +1,9 @@
+package core
+
+import "git.noahlan.cn/northlan/nnet/internal/packet"
+
+type (
+	Processor interface {
+		Process(conn *Connection, packet packet.IPacket) error
+	}
+)
diff --git a/core/processor_nnet.go b/core/processor_nnet.go
new file mode 100644
index 0000000..b20a40a
--- /dev/null
+++ b/core/processor_nnet.go
@@ -0,0 +1,72 @@
+package core
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"git.noahlan.cn/northlan/nnet/internal/log"
+	"git.noahlan.cn/northlan/nnet/internal/packet"
+	"time"
+)
+
+var (
+	hrd []byte // handshake response data
+	hbd []byte // heartbeat packet data
+)
+
+type NNetProcessor struct {
+}
+
+func NewNNetProcessor() *NNetProcessor {
+	// TODO custom hrd hbd
+	data, _ := json.Marshal(map[string]interface{}{
+		"code": 200,
+		"sys":  map[string]float64{"heartbeat": time.Second.Seconds()},
+	})
+	packer := packet.NewNNetPacker()
+	hrd, _ = packer.Pack(packet.Handshake, data)
+
+	return &NNetProcessor{}
+}
+
+func (n *NNetProcessor) Process(conn *Connection, p packet.IPacket) error {
+	h, ok := p.(*packet.Packet)
+	if !ok {
+		return packet.ErrWrongPacketType
+	}
+
+	switch h.PacketType {
+	case packet.Handshake:
+		// TODO validate handshake
+		if err := conn.SendBytes(hrd); err != nil {
+			return err
+		}
+
+		conn.SetStatus(StatusPrepare)
+		log.Debugf("connection handshake Id=%d, Remote=%s", conn.ID(), conn.Conn().RemoteAddr())
+	case packet.HandshakeAck:
+		conn.SetStatus(StatusPending)
+		log.Debugf("receive handshake ACK Id=%d, Remote=%s", conn.ID(), conn.Conn().RemoteAddr())
+	case packet.Heartbeat:
+		// Expected
+	case packet.Data:
+		if conn.Status() < StatusPending {
+			return errors.New(fmt.Sprintf("receive data on socket which not yet ACK, session will be closed immediately, remote=%s",
+				conn.Conn().RemoteAddr()))
+		}
+		conn.SetStatus(StatusWorking)
+
+		var lastMid uint64
+		switch h.MsgType {
+		case packet.Request:
+			lastMid = h.ID
+		case packet.Notify:
+			lastMid = 0
+		default:
+			return fmt.Errorf("Invalid message type: %s ", h.MsgType.String())
+		}
+		conn.SetLastMID(lastMid)
+	}
+	conn.SetLastHeartbeatAt(time.Now().Unix())
+	return nil
+}
diff --git a/core/router.go b/core/router.go
new file mode 100644
index 0000000..fc4218e
--- /dev/null
+++ b/core/router.go
@@ -0,0 +1,54 @@
+package core
+
+type (
+	Middleware func(next HandlerFunc) HandlerFunc
+
+	Route struct {
+		Matches interface{} // 用于匹配的关键字段
+		Handler HandlerFunc // 处理方法
+	}
+
+	Router interface {
+		Handler
+		Register(matches interface{}, handler Handler) error
+		SetNotFoundHandler(handler Handler)
+	}
+
+	Constructor func(Handler) Handler
+)
+
+type Chain struct {
+	constructors []Constructor
+}
+
+func newChain(constructors ...Constructor) Chain {
+	return Chain{append(([]Constructor)(nil), constructors...)}
+}
+
+func (c Chain) Then(h Handler) Handler {
+	// TODO nil
+
+	for i := range c.constructors {
+		h = c.constructors[len(c.constructors)-1-i](h)
+	}
+	return h
+}
+
+func (c Chain) ThenFunc(fn HandlerFunc) Handler {
+	if fn == nil {
+		return c.Then(nil)
+	}
+	return c.Then(fn)
+}
+
+func (c Chain) Append(constructors ...Constructor) Chain {
+	newCons := make([]Constructor, 0, len(c.constructors)+len(constructors))
+	newCons = append(newCons, c.constructors...)
+	newCons = append(newCons, constructors...)
+
+	return Chain{newCons}
+}
+
+func (c Chain) Extend(chain Chain) Chain {
+	return c.Append(chain.constructors...)
+}
diff --git a/core/server.go b/core/server.go
new file mode 100644
index 0000000..cd8d61a
--- /dev/null
+++ b/core/server.go
@@ -0,0 +1,191 @@
+package core
+
+import (
+	"git.noahlan.cn/northlan/nnet/internal/env"
+	"git.noahlan.cn/northlan/nnet/internal/log"
+	"git.noahlan.cn/northlan/nnet/internal/packet"
+	"git.noahlan.cn/northlan/nnet/serialize"
+	"net/http"
+	"time"
+)
+
+type (
+	// RunOption defines the method to customize a Server.
+	RunOption func(*Server)
+
+	Server struct {
+		ngin   *engine
+		router Router
+	}
+)
+
+// NewServer returns a server with given config of c and options defined in opts.
+// Be aware that later RunOption might overwrite previous one that write the same option.
+func NewServer(c EngineConf, opts ...RunOption) *Server {
+	s := &Server{
+		ngin:   newEngine(c),
+		router: NewRouter(),
+	}
+
+	opts = append([]RunOption{WithNotFoundHandler(nil)}, opts...)
+	for _, opt := range opts {
+		opt(s)
+	}
+
+	return s
+}
+
+// AddRoutes add given routes into the Server.
+func (s *Server) AddRoutes(rs []Route) {
+	s.ngin.addRoutes(rs...)
+}
+
+// AddRoute adds given route into the Server.
+func (s *Server) AddRoute(r Route) {
+	s.AddRoutes([]Route{r})
+}
+
+// Start starts the Server.
+// Graceful shutdown is enabled by default.
+func (s *Server) Start() {
+	if err := s.ngin.serve(s.router); err != nil {
+		log.Error(err)
+		panic(err)
+	}
+}
+
+// Stop stops the Server.
+func (s *Server) Stop() {
+	s.ngin.close()
+}
+
+// Use adds the given middleware in the Server.
+func (s *Server) Use(middleware Middleware) {
+	s.ngin.use(middleware)
+}
+
+// ToMiddleware converts the given handler to a Middleware.
+func ToMiddleware(handler func(next Handler) Handler) Middleware {
+	return func(next HandlerFunc) HandlerFunc {
+		return handler(next).Handle
+	}
+}
+
+// WithMiddlewares adds given middlewares to given routes.
+func WithMiddlewares(ms []Middleware, rs ...Route) []Route {
+	for i := len(ms) - 1; i >= 0; i-- {
+		rs = WithMiddleware(ms[i], rs...)
+	}
+	return rs
+}
+
+// WithMiddleware adds given middleware to given route.
+func WithMiddleware(middleware Middleware, rs ...Route) []Route {
+	routes := make([]Route, len(rs))
+
+	for i := range rs {
+		route := rs[i]
+		routes[i] = Route{
+			Matches: route.Matches,
+			Handler: middleware(route.Handler),
+		}
+	}
+	return routes
+}
+
+// WithNotFoundHandler returns a RunOption with not found handler set to given handler.
+func WithNotFoundHandler(handler Handler) RunOption {
+	return func(server *Server) {
+		notFoundHandler := server.ngin.notFoundHandler(handler)
+		server.router.SetNotFoundHandler(notFoundHandler)
+	}
+}
+
+func WithRouter(router Router) RunOption {
+	return func(server *Server) {
+		server.router = router
+	}
+}
+
+func WithPacker(packer packet.Packer) RunOption {
+	return func(server *Server) {
+		server.ngin.packer = packer
+	}
+}
+
+func WithProcessor(p Processor) RunOption {
+	return func(server *Server) {
+		server.ngin.processor = p
+	}
+}
+
+func WithSerializer(s serialize.Serializer) RunOption {
+	return func(server *Server) {
+		server.ngin.serializer = s
+	}
+}
+
+func WithLogger(logger log.Logger) RunOption {
+	return func(_ *Server) {
+		log.SetLogger(logger)
+	}
+}
+
+// WithTimerPrecision 设置Timer精度
+// 注：精度需大于1ms, 并且不能在运行时更改
+// 默认精度是 time.Second
+func WithTimerPrecision(precision time.Duration) RunOption {
+	if precision < time.Millisecond {
+		panic("time precision can not less than a Millisecond")
+	}
+	return func(_ *Server) {
+		env.TimerPrecision = precision
+	}
+}
+
+func WithPipeline(pipeline Pipeline) RunOption {
+	return func(server *Server) {
+		server.ngin.pipeline = pipeline
+	}
+}
+
+func WithHeartbeatInterval(d time.Duration) RunOption {
+	return func(server *Server) {
+		server.ngin.heartbeatInterval = d
+	}
+}
+
+type WSOption func(opts *wsOptions)
+
+// WithWebsocket 开启Websocket, 参数是websocket的相关参数 nnet.WSOption
+func WithWebsocket(wsOpts ...WSOption) RunOption {
+	return func(server *Server) {
+		for _, opt := range wsOpts {
+			opt(&server.ngin.wsOpt)
+		}
+		server.ngin.wsOpt.IsWebsocket = true
+	}
+}
+
+// WithWSPath 设置websocket的path
+func WithWSPath(path string) WSOption {
+	return func(opts *wsOptions) {
+		opts.WebsocketPath = path
+	}
+}
+
+// WithWSTLSConfig 设置websocket的证书和密钥
+func WithWSTLSConfig(certificate, key string) WSOption {
+	return func(opts *wsOptions) {
+		opts.TLSCertificate = certificate
+		opts.TLSKey = key
+	}
+}
+
+func WithWSCheckOriginFunc(fn func(*http.Request) bool) WSOption {
+	return func(opts *wsOptions) {
+		if fn != nil {
+			opts.CheckOrigin = fn
+		}
+	}
+}
diff --git a/core/server_test.go b/core/server_test.go
new file mode 100644
index 0000000..b4a4c13
--- /dev/null
+++ b/core/server_test.go
@@ -0,0 +1,51 @@
+package core
+
+import (
+	"fmt"
+	"git.noahlan.cn/northlan/nnet/internal/log"
+	"git.noahlan.cn/northlan/nnet/internal/packet"
+	"testing"
+	"time"
+)
+
+func TestServer(t *testing.T) {
+	server := NewServer(EngineConf{
+		Protocol: "tcp",
+		Addr:     ":12345",
+		Name:     "N-Net",
+		Mode:     DevMode,
+	},
+		WithPacker(packet.NewNNetPacker()),
+		WithSerializer(nil),
+		WithHeartbeatInterval(time.Hour),
+		WithProcessor(NewNNetProcessor()),
+	)
+
+	server.AddRoute(Route{
+		Matches: "test",
+		Handler: func(conn *Connection, pkg packet.IPacket) {
+			fmt.Println(pkg)
+			p, ok := pkg.(*packet.Packet)
+			if !ok {
+				log.Error("wrong packet type")
+				return
+			}
+
+			bd := []byte("服务器接收到数据为: " + string(p.GetBody()))
+			// 注：Response类型数据不需要Route（原地返回，客户端需等待）
+			conn.Send(packet.Header{
+				PacketType: packet.Data,
+				Length:     uint32(len(bd)),
+				MessageHeader: packet.MessageHeader{
+					MsgType: packet.Response,
+					ID:      p.ID,
+					Route:   p.Route,
+				},
+			}, bd)
+		},
+	})
+
+	defer server.Stop()
+
+	server.Start()
+}
diff --git a/core/types.go b/core/types.go
new file mode 100644
index 0000000..6ffc16b
--- /dev/null
+++ b/core/types.go
@@ -0,0 +1,15 @@
+package core
+
+import "git.noahlan.cn/northlan/nnet/internal/packet"
+
+type (
+	Handler interface {
+		Handle(conn *Connection, pkg packet.IPacket)
+	}
+
+	HandlerFunc func(conn *Connection, pkg packet.IPacket)
+)
+
+func (f HandlerFunc) Handle(conn *Connection, pkg packet.IPacket) {
+	f(conn, pkg)
+}
diff --git a/nnet/ws.go b/core/ws.go
similarity index 96%
rename from nnet/ws.go
rename to core/ws.go
index b3a3fec..8116ad0 100644
--- a/nnet/ws.go
+++ b/core/ws.go
@@ -1,4 +1,4 @@
-package nnet
+package core
 
 import (
 	"github.com/gorilla/websocket"
@@ -64,12 +64,12 @@ func (c *wsConn) Close() error {
 	return c.conn.Close()
 }
 
-// LocalAddr returns the local network address.
+// LocalAddr returns the local network Addr.
 func (c *wsConn) LocalAddr() net.Addr {
 	return c.conn.LocalAddr()
 }
 
-// RemoteAddr returns the remote network address.
+// RemoteAddr returns the remote network Addr.
 func (c *wsConn) RemoteAddr() net.Addr {
 	return c.conn.RemoteAddr()
 }
diff --git a/env/env.go b/internal/env/env.go
similarity index 100%
rename from env/env.go
rename to internal/env/env.go
diff --git a/log/logger.go b/internal/log/logger.go
similarity index 88%
rename from log/logger.go
rename to internal/log/logger.go
index f67041d..14e9748 100644
--- a/log/logger.go
+++ b/internal/log/logger.go
@@ -56,33 +56,33 @@ func newInnerLogger() Logger {
 }
 
 func (i *innerLogger) Debugf(format string, v ...interface{}) {
-	i.log.Printf(format+"\n", v)
+	i.log.Printf(format+"\n", v...)
 }
 
 func (i *innerLogger) Debug(v ...interface{}) {
-	i.log.Println(v)
+	i.log.Println(v...)
 }
 
 func (i *innerLogger) Info(v ...interface{}) {
-	i.log.Println(v)
+	i.log.Println(v...)
 }
 
 func (i *innerLogger) Infof(format string, v ...interface{}) {
-	i.log.Printf(format+"\n", v)
+	i.log.Printf(format+"\n", v...)
 }
 
 func (i *innerLogger) Error(v ...interface{}) {
-	i.log.Println(v)
+	i.log.Println(v...)
 }
 
 func (i *innerLogger) Errorf(format string, v ...interface{}) {
-	i.log.Printf(format+"\n", v)
+	i.log.Printf(format+"\n", v...)
 }
 
 func (i *innerLogger) Fatal(v ...interface{}) {
-	i.log.Fatal(v)
+	i.log.Fatal(v...)
 }
 
 func (i *innerLogger) Fatalf(format string, v ...interface{}) {
-	i.log.Fatalf(format+"\n", v)
+	i.log.Fatalf(format+"\n", v...)
 }
diff --git a/internal/packet/packer_nnet.go b/internal/packet/packer_nnet.go
new file mode 100644
index 0000000..f5f4357
--- /dev/null
+++ b/internal/packet/packer_nnet.go
@@ -0,0 +1,247 @@
+package packet
+
+import (
+	"bytes"
+	"encoding/binary"
+	"errors"
+)
+
+type NNetPacker struct {
+	buf  *bytes.Buffer
+	size int  // 最近一次 length
+	typ  byte // 最近一次 packet type
+	flag byte // 最近一次 flag
+}
+
+// packer constants.
+const (
+	headLength    = 5
+	maxPacketSize = 64 * 1024
+
+	msgRouteCompressMask = 0x01 // 0000 0001  last bit
+	msgTypeMask          = 0x07 // 0000 0111  1-3 bit (需要>>)
+	msgRouteLengthMask   = 0xFF // 1111 1111  last 8 bit
+	msgHeadLength        = 0x02 // 0000 0010  2 bit
+)
+
+var (
+	ErrPacketSizeExceed  = errors.New("packer: packet size exceed")
+	ErrWrongMessageType  = errors.New("wrong message type")
+	ErrRouteInfoNotFound = errors.New("route info not found in dictionary")
+	ErrWrongMessage      = errors.New("wrong message")
+
+	// ErrWrongPacketType represents a wrong packet type.
+	ErrWrongPacketType = errors.New("wrong packet type")
+)
+
+var (
+	routes = make(map[string]uint16) // route map to code
+	codes  = make(map[uint16]string) // code map to route
+)
+
+func NewNNetPacker() *NNetPacker {
+	p := &NNetPacker{
+		buf: bytes.NewBuffer(nil),
+	}
+	p.resetFlags()
+	return p
+}
+
+func (d *NNetPacker) resetFlags() {
+	d.size = -1
+	d.typ = byte(Unknown)
+	d.flag = 0x00
+}
+
+func (d *NNetPacker) routable(t MsgType) bool {
+	return t == Request || t == Notify || t == Push
+}
+
+func (d *NNetPacker) invalidType(t MsgType) bool {
+	return t < Request || t > Push
+}
+
+func (d *NNetPacker) Pack(header interface{}, data []byte) ([]byte, error) {
+	h, ok := header.(Header)
+	if !ok {
+		return nil, ErrWrongPacketType
+	}
+	typ := h.PacketType
+
+	if typ < Handshake || typ > Kick {
+		return nil, ErrWrongPacketType
+	}
+
+	if d.invalidType(h.MsgType) {
+		return nil, ErrWrongMessageType
+	}
+
+	buf := make([]byte, 0)
+
+	// packet type
+	buf = append(buf, byte(h.PacketType))
+
+	// length
+	buf = append(buf, d.intToBytes(uint32(len(data)))...)
+
+	// flag
+	flag := byte(h.MsgType << 1) // 编译器提示,此处 byte 转换不能删
+	code, compressed := routes[h.Route]
+	if compressed {
+		flag |= msgRouteCompressMask
+	}
+	buf = append(buf, flag)
+
+	// msg id
+	if h.MsgType == Request || h.MsgType == Response {
+		n := h.ID
+		// variant length encode
+		for {
+			b := byte(n % 128)
+			n >>= 7
+			if n != 0 {
+				buf = append(buf, b+128)
+			} else {
+				buf = append(buf, b)
+				break
+			}
+		}
+	}
+
+	// route
+	if d.routable(h.MsgType) {
+		if compressed {
+			buf = append(buf, byte((code>>8)&0xFF))
+			buf = append(buf, byte(code&0xFF))
+		} else {
+			buf = append(buf, byte(len(h.Route)))
+			buf = append(buf, []byte(h.Route)...)
+		}
+	}
+
+	// body
+	buf = append(buf, data...)
+	return buf, nil
+}
+
+// Encode packet data length to bytes(Big end)
+func (d *NNetPacker) intToBytes(n uint32) []byte {
+	buf := make([]byte, 3)
+	buf[0] = byte((n >> 16) & 0xFF)
+	buf[1] = byte((n >> 8) & 0xFF)
+	buf[2] = byte(n & 0xFF)
+	return buf
+}
+
+func (d *NNetPacker) Unpack(data []byte) ([]IPacket, error) {
+	d.buf.Write(data) // copy
+
+	var (
+		packets []IPacket
+		err     error
+	)
+
+	// 检查包长度
+	if d.buf.Len() < headLength {
+		return nil, err
+	}
+
+	// 第一次拆包
+	if d.size < 0 {
+		if err = d.readHeader(); err != nil {
+			return nil, err
+		}
+	}
+
+	for d.size <= d.buf.Len() {
+		// 读取
+		p := newPacket(Type(d.typ))
+		p.MsgType = MsgType((d.flag >> 1) & msgTypeMask)
+
+		if d.invalidType(p.MsgType) {
+			return nil, ErrWrongMessageType
+		}
+		if p.MsgType == Request || p.MsgType == Response {
+			id := uint64(0)
+			// little end byte order
+			// WARNING: must be stored in 64 bits integer
+			// variant length encode
+			c := 0
+			for {
+				b, err := d.buf.ReadByte()
+				if err != nil {
+					break
+				}
+				id += uint64(b&0x7F) << uint64(7*c)
+				if b < 128 {
+					break
+				}
+				c++
+			}
+			p.ID = id
+		}
+		if d.routable(p.MsgType) {
+			if d.flag&msgRouteCompressMask == 1 {
+				p.compressed = true
+				code := binary.BigEndian.Uint16(d.buf.Next(2))
+				route, ok := codes[code]
+				if !ok {
+					return nil, ErrRouteInfoNotFound
+				}
+				p.Route = route
+			} else {
+				p.compressed = false
+				rl, _ := d.buf.ReadByte()
+				if int(rl) > d.buf.Len() {
+					return nil, ErrWrongMessage
+				}
+				p.Route = string(d.buf.Next(int(rl)))
+			}
+		}
+		p.Length = uint32(d.size)
+		p.Data = d.buf.Next(d.size)
+
+		packets = append(packets, p)
+
+		// 剩余数据不满足至少一个数据帧，重置数据帧长度
+		// 数据缓存内存 保留至 下一次进入本方法以继续拆包
+		if d.buf.Len() < headLength {
+			d.resetFlags()
+			break
+		}
+		// 读取下一个包 next
+		if err = d.readHeader(); err != nil {
+			return packets, err
+		}
+	}
+	if packets == nil || len(packets) <= 0 {
+		d.resetFlags()
+		d.buf.Reset()
+	}
+	return packets, nil
+}
+
+func (d *NNetPacker) readHeader() error {
+	header := d.buf.Next(headLength)
+	d.typ = header[0]
+	if d.typ < Handshake || d.typ > Kick {
+		return ErrWrongPacketType
+	}
+	d.size = d.bytesToInt(header[1 : len(header)-1])
+	d.flag = header[len(header)-1]
+
+	// 最大包限定
+	if d.size > maxPacketSize {
+		return ErrPacketSizeExceed
+	}
+	return nil
+}
+
+// Decode packet data length byte to int(Big end)
+func (d *NNetPacker) bytesToInt(b []byte) int {
+	result := 0
+	for _, v := range b {
+		result = result<<8 + int(v)
+	}
+	return result
+}
diff --git a/internal/packet/packer_nnet_test.go b/internal/packet/packer_nnet_test.go
new file mode 100644
index 0000000..6f4072c
--- /dev/null
+++ b/internal/packet/packer_nnet_test.go
@@ -0,0 +1,98 @@
+package packet
+
+import (
+	"encoding/hex"
+	"fmt"
+	"testing"
+)
+
+func TestPacker(t *testing.T) {
+	p := NewNNetPacker()
+
+	body := []byte("")
+	header := Header{
+		PacketType: Handshake,
+		Length:     uint32(len(body)),
+		MessageHeader: MessageHeader{
+			MsgType:    Request,
+			ID:         1,
+			Route:      "",
+			compressed: false,
+		},
+	}
+
+	pack, err := p.Pack(header, body)
+	if err != nil {
+		return
+	}
+	fmt.Println(hex.EncodeToString(pack))
+
+	// handshake ack
+	body = []byte("")
+	header = Header{
+		PacketType: HandshakeAck,
+		Length:     uint32(len(body)),
+		MessageHeader: MessageHeader{
+			MsgType:    Response,
+			ID:         1,
+			Route:      "",
+			compressed: false,
+		},
+	}
+
+	pack, err = p.Pack(header, body)
+	if err != nil {
+		return
+	}
+	fmt.Println(hex.EncodeToString(pack))
+
+	// data
+	body = []byte("123")
+	header = Header{
+		PacketType: Data,
+		Length:     uint32(len(body)),
+		MessageHeader: MessageHeader{
+			MsgType:    Request,
+			ID:         2,
+			Route:      "",
+			compressed: false,
+		},
+	}
+
+	pack, err = p.Pack(header, body)
+	if err != nil {
+		return
+	}
+	fmt.Println(hex.EncodeToString(pack))
+
+	// data -> route: test -> handler
+	// data
+	body = []byte("ni hao")
+	header = Header{
+		PacketType: Data,
+		Length:     uint32(len(body)),
+		MessageHeader: MessageHeader{
+			MsgType:    Request,
+			ID:         3,
+			Route:      "test",
+			compressed: false,
+		},
+	}
+
+	pack, err = p.Pack(header, body)
+	if err != nil {
+		return
+	}
+	fmt.Println(hex.EncodeToString(pack))
+}
+
+func TestUnPack(t *testing.T) {
+	data := []byte{0x04, 0x00, 0x00, 0x23, 0x04, 0x03, 0xE6, 0x9C, 0x8D, 0xE5, 0x8A, 0xA1, 0xE5, 0x99, 0xA8, 0xE6, 0x8E, 0xA5, 0xE6, 0x94, 0xB6, 0xE5, 0x88, 0xB0, 0xE6, 0x95, 0xB0, 0xE6, 0x8D, 0xAE, 0xE4, 0xB8, 0xBA, 0x3A, 0x20, 0x6E, 0x69, 0x20, 0x68, 0x61, 0x6F}
+	p := NewNNetPacker()
+
+	unPacked, err := p.Unpack(data)
+	if err != nil {
+		panic(err)
+	}
+	fmt.Println(unPacked)
+}
diff --git a/internal/packet/packet.go b/internal/packet/packet.go
new file mode 100644
index 0000000..41d8a80
--- /dev/null
+++ b/internal/packet/packet.go
@@ -0,0 +1,19 @@
+package packet
+
+type (
+	// IPacket 数据帧
+	IPacket interface {
+		GetHeader() interface{} // 数据帧头部 Header
+		GetLen() uint32         // 数据帧长度 4bytes - 32bit 占位，根据实际情况进行转换
+		GetBody() []byte        // 数据 Body
+	}
+
+	// Packer 数据帧 封包/解包
+	Packer interface {
+		// Pack 封包，将原始数据构造为二进制流数据帧
+		Pack(header interface{}, data []byte) ([]byte, error)
+
+		// Unpack 解包
+		Unpack(data []byte) ([]IPacket, error)
+	}
+)
diff --git a/internal/packet/packet_nnet.go b/internal/packet/packet_nnet.go
new file mode 100644
index 0000000..9311e92
--- /dev/null
+++ b/internal/packet/packet_nnet.go
@@ -0,0 +1,94 @@
+package packet
+
+import (
+	"encoding/hex"
+	"fmt"
+)
+
+// Type 数据帧类型，如：握手，心跳，数据 等
+type Type byte
+
+const (
+	// Unknown 未知包类型，无意义
+	Unknown Type = iota
+
+	// Handshake 握手数据(服务端主动发起)
+	Handshake = 0x01
+
+	// HandshakeAck 握手回复(客户端回复)
+	HandshakeAck = 0x02
+
+	// Heartbeat 心跳(服务端发起)
+	Heartbeat = 0x03
+
+	// Data 数据传输
+	Data = 0x04
+
+	// Kick 服务端主动断开连接
+	Kick = 0x05
+)
+
+type MsgType byte
+
+// Message types
+const (
+	Request  MsgType = 0x00
+	Notify           = 0x01
+	Response         = 0x02
+	Push             = 0x03
+)
+
+var msgTypes = map[MsgType]string{
+	Request:  "Request",
+	Notify:   "Notify",
+	Response: "Response",
+	Push:     "Push",
+}
+
+func (t MsgType) String() string {
+	return msgTypes[t]
+}
+
+type (
+	Header struct {
+		PacketType    Type   // 数据帧 类型
+		Length        uint32 // 数据长度
+		MessageHeader        // 消息头
+	}
+	MessageHeader struct {
+		MsgType    MsgType // message type (flag)
+		ID         uint64  // unique id, zero while notify mode
+		Route      string  // route for locating service
+		compressed bool    // if message compressed
+	}
+	Packet struct {
+		Header
+		Data []byte // 原始数据
+	}
+)
+
+func newPacket(typ Type) *Packet {
+	return &Packet{
+		Header: Header{
+			PacketType:    typ,
+			MessageHeader: MessageHeader{},
+		},
+	}
+}
+
+func (p *Packet) GetHeader() interface{} {
+	return p.Header
+}
+
+func (p *Packet) GetLen() uint32 {
+	return p.Length
+}
+
+func (p *Packet) GetBody() []byte {
+	return p.Data
+}
+
+func (p *Packet) String() string {
+	return fmt.Sprintf("Packet[Type: %d, Len: %d] Message[Type: %s, ID: %d, Route: %s, Compressed: %v] BodyStr: [%s], BodyHex: [%s]",
+		p.PacketType, p.Length, p.MsgType, p.ID, p.Route, p.compressed, string(p.Data), hex.EncodeToString(p.Data))
+}
diff --git a/internal/pool/pool.go b/internal/pool/pool.go
new file mode 100644
index 0000000..2ec6e8a
--- /dev/null
+++ b/internal/pool/pool.go
@@ -0,0 +1,27 @@
+package pool
+
+import "github.com/panjf2000/ants/v2"
+
+var _pool *pool
+
+type pool struct {
+	connPool   *ants.Pool
+	workerPool *ants.Pool
+}
+
+func InitPool(size int) {
+	p := &pool{}
+
+	p.connPool, _ = ants.NewPool(size, ants.WithNonblocking(true))
+	p.workerPool, _ = ants.NewPool(size*2, ants.WithNonblocking(true))
+
+	_pool = p
+}
+
+func SubmitConn(h func()) error {
+	return _pool.connPool.Submit(h)
+}
+
+func SubmitWorker(h func()) error {
+	return _pool.workerPool.Submit(h)
+}
diff --git a/message/codec_nnet.go b/message/codec_nnet.go
deleted file mode 100644
index 9ef4483..0000000
--- a/message/codec_nnet.go
+++ /dev/null
@@ -1,146 +0,0 @@
-package message
-
-import (
-	"encoding/binary"
-	"errors"
-)
-
-var _ Codec = (*NNetCodec)(nil)
-
-const (
-	msgRouteCompressMask = 0x01 // 0000 0001  last bit
-	msgTypeMask          = 0x07 // 0000 0111  1-3 bit (需要>>)
-	msgRouteLengthMask   = 0xFF // 1111 1111  last 8 bit
-	msgHeadLength        = 0x02 // 0000 0010  2 bit
-)
-
-// Errors that could be occurred in message codec
-var (
-	ErrWrongMessageType  = errors.New("wrong message type")
-	ErrInvalidMessage    = errors.New("invalid message")
-	ErrRouteInfoNotFound = errors.New("route info not found in dictionary")
-	ErrWrongMessage      = errors.New("wrong message")
-)
-
-var (
-	routes = make(map[string]uint16) // route map to code
-	codes  = make(map[uint16]string) // code map to route
-)
-
-type NNetCodec struct{}
-
-func (n *NNetCodec) routable(t Type) bool {
-	return t == Request || t == Notify || t == Push
-}
-
-func (n *NNetCodec) invalidType(t Type) bool {
-	return t < Request || t > Push
-}
-
-func (n *NNetCodec) Encode(v interface{}) ([]byte, error) {
-	m, ok := v.(*Message)
-	if !ok {
-		return nil, ErrWrongMessageType
-	}
-	if n.invalidType(m.Type) {
-		return nil, ErrWrongMessageType
-	}
-	buf := make([]byte, 0)
-	flag := byte(m.Type << 1) // 编译器提示,此处 byte 转换不能删
-
-	code, compressed := routes[m.Route]
-	if compressed {
-		flag |= msgRouteCompressMask
-	}
-	buf = append(buf, flag)
-
-	if m.Type == Request || m.Type == Response {
-		n := m.ID
-		// variant length encode
-		for {
-			b := byte(n % 128)
-			n >>= 7
-			if n != 0 {
-				buf = append(buf, b+128)
-			} else {
-				buf = append(buf, b)
-				break
-			}
-		}
-	}
-
-	if n.routable(m.Type) {
-		if compressed {
-			buf = append(buf, byte((code>>8)&0xFF))
-			buf = append(buf, byte(code&0xFF))
-		} else {
-			buf = append(buf, byte(len(m.Route)))
-			buf = append(buf, []byte(m.Route)...)
-		}
-	}
-
-	buf = append(buf, m.Data...)
-	return buf, nil
-}
-
-func (n *NNetCodec) Decode(data []byte) (interface{}, error) {
-	if len(data) < msgHeadLength {
-		return nil, ErrInvalidMessage
-	}
-	m := New()
-	flag := data[0]
-	offset := 1
-	m.Type = Type((flag >> 1) & msgTypeMask) // 编译器提示,此处Type转换不能删
-
-	if n.invalidType(m.Type) {
-		return nil, ErrWrongMessageType
-	}
-
-	if m.Type == Request || m.Type == Response {
-		id := uint64(0)
-		// little end byte order
-		// WARNING: must can be stored in 64 bits integer
-		// variant length encode
-		for i := offset; i < len(data); i++ {
-			b := data[i]
-			id += uint64(b&0x7F) << uint64(7*(i-offset))
-			if b < 128 {
-				offset = i + 1
-				break
-			}
-		}
-		m.ID = id
-	}
-
-	if offset >= len(data) {
-		return nil, ErrWrongMessage
-	}
-
-	if n.routable(m.Type) {
-		if flag&msgRouteCompressMask == 1 {
-			m.compressed = true
-			code := binary.BigEndian.Uint16(data[offset:(offset + 2)])
-			route, ok := codes[code]
-			if !ok {
-				return nil, ErrRouteInfoNotFound
-			}
-			m.Route = route
-			offset += 2
-		} else {
-			m.compressed = false
-			rl := data[offset]
-			offset++
-			if offset+int(rl) > len(data) {
-				return nil, ErrWrongMessage
-			}
-			m.Route = string(data[offset:(offset + int(rl))])
-			offset += int(rl)
-		}
-	}
-
-	if offset > len(data) {
-		return nil, ErrWrongMessage
-	}
-	m.Data = data[offset:]
-	return m, nil
-}
diff --git a/message/interface.go b/message/interface.go
deleted file mode 100644
index 89d070e..0000000
--- a/message/interface.go
+++ /dev/null
@@ -1,11 +0,0 @@
-package message
-
-type (
-	// Codec 消息编解码器
-	Codec interface {
-		// Encode 编码
-		Encode(v interface{}) ([]byte, error)
-		// Decode 解码
-		Decode(data []byte) (interface{}, error)
-	}
-)
diff --git a/message/message_nnet.go b/message/message_nnet.go
deleted file mode 100644
index 205d2ab..0000000
--- a/message/message_nnet.go
+++ /dev/null
@@ -1,46 +0,0 @@
-package message
-
-import (
-	"fmt"
-)
-
-// Type represents the type of message, which could be Request/Notify/Response/Push
-type Type byte
-
-// Message types
-const (
-	Request  Type = 0x00
-	Notify        = 0x01
-	Response      = 0x02
-	Push          = 0x03
-)
-
-var types = map[Type]string{
-	Request:  "Request",
-	Notify:   "Notify",
-	Response: "Response",
-	Push:     "Push",
-}
-
-func (t Type) String() string {
-	return types[t]
-}
-
-// Message represents an unmarshaler message or a message which to be marshaled
-type Message struct {
-	Type       Type   // message type (flag)
-	ID         uint64 // unique id, zero while notify mode
-	Route      string // route for locating service
-	Data       []byte // payload
-	compressed bool   // if message compressed
-}
-
-// New returns a new message instance
-func New() *Message {
-	return &Message{}
-}
-
-// String, implementation of fmt.Stringer interface
-func (m *Message) String() string {
-	return fmt.Sprintf("%s %s (%dbytes)", types[m.Type], m.Route, len(m.Data))
-}
diff --git a/nface/i_connection.go b/nface/i_connection.go
deleted file mode 100644
index 2718722..0000000
--- a/nface/i_connection.go
+++ /dev/null
@@ -1,31 +0,0 @@
-package nface
-
-import "net"
-
-const (
-	// StatusStart 开始阶段
-	StatusStart int32 = iota + 1
-	// StatusPrepare 准备阶段
-	StatusPrepare
-	// StatusWorking 工作阶段
-	StatusWorking
-	// StatusClosed 连接关闭
-	StatusClosed
-)
-
-type IConnection interface {
-	// Server 获取Server实例
-	Server() IServer
-	// Status 获取连接状态
-	Status() int32
-	// SetStatus 设置连接状态
-	SetStatus(s int32)
-	// Conn 获取底层网络连接
-	Conn() net.Conn
-	// ID 获取连接ID
-	ID() int64
-	// Session 获取当前连接绑定的Session
-	Session() ISession
-	// Close 关闭连接
-	Close() error
-}
diff --git a/nface/i_router.go b/nface/i_router.go
deleted file mode 100644
index 55449a6..0000000
--- a/nface/i_router.go
+++ /dev/null
@@ -1,5 +0,0 @@
-package nface
-
-// IRouter 路由接口
-type IRouter interface {
-}
diff --git a/nface/i_server.go b/nface/i_server.go
deleted file mode 100644
index 1635f02..0000000
--- a/nface/i_server.go
+++ /dev/null
@@ -1,4 +0,0 @@
-package nface
-
-type IServer interface {
-}
diff --git a/nface/i_session.go b/nface/i_session.go
deleted file mode 100644
index 7a30606..0000000
--- a/nface/i_session.go
+++ /dev/null
@@ -1,31 +0,0 @@
-package nface
-
-// ISessionAttribute Session数据接口
-type ISessionAttribute interface {
-	// Attribute 获取指定key的值
-	Attribute(key string) interface{}
-	// Keys 获取所有Key
-	Keys() []string
-	// Exists key是否存在
-	Exists(key string) bool
-	// Attributes 获取所有数据
-	Attributes() map[string]interface{}
-	// RemoveAttribute 通过key移除数据
-	RemoveAttribute(key string)
-	// SetAttribute 设置数据
-	SetAttribute(key string, value interface{})
-	// Invalidate 使当前Session无效，并且解除所有与之绑定的对象
-	Invalidate()
-}
-
-// ISession session接口
-type ISession interface {
-	// ID Session ID
-	ID() int64
-	// UID 用户自行绑定UID,默认与SessionID一致
-	UID() string
-	// Bind 绑定用户ID
-	Bind(uid string)
-	// ISessionAttribute Session数据抽象方法
-	ISessionAttribute
-}
diff --git a/nnet/connection.go b/nnet/connection.go
deleted file mode 100644
index 62170f4..0000000
--- a/nnet/connection.go
+++ /dev/null
@@ -1,187 +0,0 @@
-package nnet
-
-import (
-	"errors"
-	"git.noahlan.cn/northlan/nnet/log"
-	"git.noahlan.cn/northlan/nnet/nface"
-	"git.noahlan.cn/northlan/nnet/packet"
-	"git.noahlan.cn/northlan/nnet/pipeline"
-	"git.noahlan.cn/northlan/nnet/session"
-	"net"
-	"sync/atomic"
-	"time"
-)
-
-var (
-	_ nface.IConnection = (*Connection)(nil)
-
-	ErrCloseClosedSession = errors.New("close closed session")
-	// ErrBrokenPipe represents the low-level connection has broken.
-	ErrBrokenPipe = errors.New("broken low-level pipe")
-	// ErrBufferExceed indicates that the current session buffer is full and
-	// can not receive more data.
-	ErrBufferExceed = errors.New("session send buffer exceed")
-)
-
-type (
-	Connection struct {
-		session nface.ISession // Session
-		server  *Server        // Server 引用
-
-		conn            net.Conn // low-level conn fd
-		status          int32    // 连接状态
-		lastMid         uint64   // 最近一次消息ID
-		lastHeartbeatAt int64    // 最近一次心跳时间
-
-		chDie  chan struct{}       // 停止通道
-		chSend chan pendingMessage // 消息发送通道
-
-		pipeline pipeline.Pipeline // 消息管道
-	}
-
-	pendingMessage struct {
-		typ     interface{} // message type
-		route   string      // message route
-		mid     uint64      // response message id
-		payload interface{} // payload
-	}
-)
-
-func newConnection(server *Server, conn net.Conn, pipeline pipeline.Pipeline) *Connection {
-	r := &Connection{
-		conn:   conn,
-		server: server,
-		status: nface.StatusStart,
-
-		lastHeartbeatAt: time.Now().Unix(),
-
-		chDie:  make(chan struct{}),
-		chSend: make(chan pendingMessage, 512),
-
-		pipeline: pipeline,
-	}
-
-	// binding session
-	r.session = session.New()
-	return r
-}
-
-func (r *Connection) send(m pendingMessage) (err error) {
-	defer func() {
-		if e := recover(); e != nil {
-			err = ErrBrokenPipe
-		}
-	}()
-	r.chSend <- m
-	return err
-}
-
-func (r *Connection) Server() nface.IServer {
-	return r.server
-}
-
-func (r *Connection) Status() int32 {
-	return atomic.LoadInt32(&r.status)
-}
-
-func (r *Connection) SetStatus(s int32) {
-	atomic.StoreInt32(&r.status, s)
-}
-
-func (r *Connection) Conn() net.Conn {
-	return r.conn
-}
-
-func (r *Connection) ID() int64 {
-	return r.session.ID()
-}
-
-func (r *Connection) setLastHeartbeatAt(t int64) {
-	atomic.StoreInt64(&r.lastHeartbeatAt, t)
-}
-
-func (r *Connection) Session() nface.ISession {
-	return r.session
-}
-
-func (r *Connection) write() {
-	ticker := time.NewTicker(r.server.HeartbeatInterval)
-
-	chWrite := make(chan []byte, 1024)
-
-	defer func() {
-		ticker.Stop()
-		close(r.chSend)
-		close(chWrite)
-		_ = r.Close()
-
-		log.Debugf("Connection write goroutine exit, ConnID=%d, SessionUID=%d", r.ID(), r.session.UID())
-	}()
-
-	for {
-		select {
-		case <-ticker.C:
-			// TODO heartbeat enable control
-			deadline := time.Now().Add(-2 * r.server.HeartbeatInterval).Unix()
-			if atomic.LoadInt64(&r.lastHeartbeatAt) < deadline {
-				log.Debugf("Session heartbeat timeout, LastTime=%d, Deadline=%d", atomic.LoadInt64(&r.lastHeartbeatAt), deadline)
-				return
-			}
-			// TODO heartbeat data
-			chWrite <- []byte{}
-		case data := <-r.chSend:
-			// marshal packet body (data)
-			payload, err := r.server.Serializer.Marshal(data.payload)
-			if err != nil {
-				log.Errorf("message body marshal err: %v", err)
-				break
-			}
-			// TODO new message and pipeline
-
-			if pipe := r.pipeline; pipe != nil {
-				err := pipe.Outbound().Process(r)
-				if err != nil {
-					log.Errorf("broken pipeline err: %s", err.Error())
-					break
-				}
-			}
-
-			// TODO encode message ? message processor ?
-
-			// packet pack data
-			p, err := r.server.Packer.Pack(packet.Data, payload)
-			if err != nil {
-				log.Error(err.Error())
-				break
-			}
-			chWrite <- p
-		case data := <-chWrite:
-			// 回写数据
-			if _, err := r.conn.Write(data); err != nil {
-				log.Error(err.Error())
-				return
-			}
-		case <-r.chDie: // connection close signal
-			return
-		case <-r.server.DieChan: // application quit signal
-			return
-		}
-	}
-}
-
-func (r *Connection) Close() error {
-	if r.Status() == nface.StatusClosed {
-		return ErrCloseClosedSession
-	}
-	r.SetStatus(nface.StatusClosed)
-
-	log.Debugf("close connection, ID: %d", r.ID())
-
-	select {
-	case <-r.chDie:
-	default:
-		close(r.chDie)
-		// TODO lifetime
-	}
-	return r.conn.Close()
-}
diff --git a/nnet/handler.go b/nnet/handler.go
deleted file mode 100644
index 2600a44..0000000
--- a/nnet/handler.go
+++ /dev/null
@@ -1,113 +0,0 @@
-package nnet
-
-import (
-	"fmt"
-	"git.noahlan.cn/northlan/nnet/component"
-	"git.noahlan.cn/northlan/nnet/log"
-	"git.noahlan.cn/northlan/nnet/packet"
-	"git.noahlan.cn/northlan/nnet/pipeline"
-	"github.com/gorilla/websocket"
-	"net"
-	"time"
-)
-
-type Handler struct {
-	server    *Server           // Server 引用
-	pipeline  pipeline.Pipeline // 通道
-	processor packet.Processor  // 数据包处理器
-
-	allServices map[string]*component.Service // 所有注册的Service
-	allHandlers map[string]*component.Handler // 所有注册的Handler
-}
-
-func NewHandler(server *Server, pipeline pipeline.Pipeline, processor packet.Processor) *Handler {
-	return &Handler{
-		server:      server,
-		pipeline:    pipeline,
-		processor:   processor,
-		allServices: make(map[string]*component.Service),
-		allHandlers: make(map[string]*component.Handler),
-	}
-}
-
-func (h *Handler) register(comp component.Component, opts []component.Option) error {
-	s := component.NewService(comp, opts)
-
-	if _, ok := h.allServices[s.Name]; ok {
-		return fmt.Errorf("handler: service already defined: %s", s.Name)
-	}
-
-	if err := s.ExtractHandler(); err != nil {
-		return err
-	}
-
-	h.allServices[s.Name] = s
-
-	// 拷贝一份所有handlers
-	for name, handler := range s.Handlers {
-		handleName := fmt.Sprintf("%s.%s", s.Name, name)
-		log.Debugf("register handler %s", handleName)
-		h.allHandlers[handleName] = handler
-	}
-
-	return nil
-}
-
-func (h *Handler) handleWS(conn *websocket.Conn) {
-	c, err := newWSConn(conn)
-	if err != nil {
-		log.Error(err)
-		return
-	}
-	h.handle(c)
-}
-
-func (h *Handler) handle(conn net.Conn) {
-	connection := newConnection(h.server, conn, h.pipeline)
-	h.server.sessionMgr.StoreSession(connection.Session())
-
-	_ = pool.SubmitConn(func() {
-		h.writeLoop(connection)
-	})
-
-	_ = pool.SubmitWorker(func() {
-		h.readLoop(connection)
-	})
-
-	// hook
-}
-
-func (h *Handler) writeLoop(conn *Connection) {
-	conn.write()
-}
-
-func (h *Handler) readLoop(conn *Connection) {
-	buf := make([]byte, 4096)
-	for {
-		n, err := conn.Conn().Read(buf)
-		if err != nil {
-			log.Errorf("Read message error: %s, session will be closed immediately", err.Error())
-			return
-		}
-
-		// warning: 为性能考虑，复用slice处理数据，buf传入后必须要copy再处理
-		packets, err := h.server.Packer.Unpack(buf[:n])
-		if err != nil {
-			log.Error(err.Error())
-		}
-		// packets 处理
-		for _, p := range packets {
-			if err := h.processPackets(conn, p); err != nil {
-				log.Error(err.Error())
-				return
-			}
-		}
-	}
-}
-
-func (h *Handler) processPackets(conn *Connection, packets interface{}) error {
-	err := h.processor.ProcessPacket(conn, packets)
-
-	conn.setLastHeartbeatAt(time.Now().Unix())
-	return err
-}
diff --git a/nnet/options.go b/nnet/options.go
deleted file mode 100644
index 7233e7c..0000000
--- a/nnet/options.go
+++ /dev/null
@@ -1,82 +0,0 @@
-package nnet
-
-import (
-	"git.noahlan.cn/northlan/nnet/component"
-	"git.noahlan.cn/northlan/nnet/env"
-	"git.noahlan.cn/northlan/nnet/log"
-	"git.noahlan.cn/northlan/nnet/pipeline"
-	"net/http"
-	"time"
-)
-
-type Option func(options *Options)
-type WSOption func(opts *WSOptions)
-
-func WithLogger(logger log.Logger) Option {
-	return func(_ *Options) {
-		log.SetLogger(logger)
-	}
-}
-
-func WithPipeline(pipeline pipeline.Pipeline) Option {
-	return func(options *Options) {
-		options.Pipeline = pipeline
-	}
-}
-
-func WithComponents(components *component.Components) Option {
-	return func(options *Options) {
-		options.Components = components
-	}
-}
-
-func WithHeartbeatInterval(d time.Duration) Option {
-	return func(options *Options) {
-		options.HeartbeatInterval = d
-	}
-}
-
-// WithTimerPrecision 设置Timer精度
-// 注：精度需大于1ms, 并且不能在运行时更改
-// 默认精度是 time.Second
-func WithTimerPrecision(precision time.Duration) Option {
-	if precision < time.Millisecond {
-		panic("time precision can not less than a Millisecond")
-	}
-	return func(_ *Options) {
-		env.TimerPrecision = precision
-	}
-}
-
-// WithWebsocket 开启Websocket, 参数是websocket的相关参数 nnet.WSOption
-func WithWebsocket(wsOpts ...WSOption) Option {
-	return func(options *Options) {
-		for _, opt := range wsOpts {
-			opt(&options.WS)
-		}
-		options.WS.IsWebsocket = true
-	}
-}
-
-// WithWSPath 设置websocket的path
-func WithWSPath(path string) WSOption {
-	return func(opts *WSOptions) {
-		opts.WebsocketPath = path
-	}
-}
-
-// WithWSTLSConfig 设置websocket的证书和密钥
-func WithWSTLSConfig(certificate, key string) WSOption {
-	return func(opts *WSOptions) {
-		opts.TLSCertificate = certificate
-		opts.TLSKey = key
-	}
-}
-
-func WithWSCheckOriginFunc(fn func(*http.Request) bool) WSOption {
-	return func(opts *WSOptions) {
-		if fn != nil {
-			opts.CheckOrigin = fn
-		}
-	}
-}
diff --git a/nnet/pool.go b/nnet/pool.go
deleted file mode 100644
index c1ef4ce..0000000
--- a/nnet/pool.go
+++ /dev/null
@@ -1,27 +0,0 @@
-package nnet
-
-import "github.com/panjf2000/ants/v2"
-
-var pool *Pool
-
-type Pool struct {
-	connPool   *ants.Pool
-	workerPool *ants.Pool
-}
-
-func initPool(size int) {
-	p := &Pool{}
-
-	p.connPool, _ = ants.NewPool(size, ants.WithNonblocking(true))
-	p.workerPool, _ = ants.NewPool(size*2, ants.WithNonblocking(true))
-
-	pool = p
-}
-
-func (p *Pool) SubmitConn(h func()) error {
-	return p.connPool.Submit(h)
-}
-
-func (p *Pool) SubmitWorker(h func()) error {
-	return p.workerPool.Submit(h)
-}
diff --git a/nnet/server.go b/nnet/server.go
deleted file mode 100644
index 3685b76..0000000
--- a/nnet/server.go
+++ /dev/null
@@ -1,230 +0,0 @@
-package nnet
-
-import (
-	"errors"
-	"fmt"
-	"git.noahlan.cn/northlan/nnet/component"
-	"git.noahlan.cn/northlan/nnet/log"
-	"git.noahlan.cn/northlan/nnet/packet"
-	"git.noahlan.cn/northlan/nnet/pipeline"
-	"git.noahlan.cn/northlan/nnet/scheduler"
-	"git.noahlan.cn/northlan/nnet/serialize"
-	"git.noahlan.cn/northlan/nnet/session"
-	"github.com/gorilla/websocket"
-	"net"
-	"net/http"
-	"os"
-	"os/signal"
-	"syscall"
-	"time"
-)
-
-type (
-	Options struct {
-		Name            string                // 服务端名，默认为n-net
-		Pipeline        pipeline.Pipeline     // 消息管道
-		RetryInterval   time.Duration         // 消息重试间隔时长
-		Components      *component.Components // 组件库
-		Packer          packet.Packer         // 封包、拆包器
-		PacketProcessor packet.Processor      // 数据包处理器
-		Serializer      serialize.Serializer  // 消息 序列化/反序列化
-
-		HeartbeatInterval time.Duration // 心跳间隔，0表示不进行心跳
-		WS                WSOptions     // websocket
-	}
-
-	WSOptions struct {
-		IsWebsocket    bool                     // 是否为websocket服务端
-		WebsocketPath  string                   // ws地址(ws://127.0.0.1/WebsocketPath)
-		TLSCertificate string                   // TLS 证书地址 (websocket)
-		TLSKey         string                   // TLS 证书key地址 (websocket)
-		CheckOrigin    func(*http.Request) bool // check origin
-	}
-)
-
-// Server TCP-Server
-type Server struct {
-	// Options 参数列表
-	Options
-	// protocol 协议名
-	// "tcp", "tcp4", "tcp6", "unix" or "unixpacket"
-	// 若只想开启IPv4, 使用tcp4即可
-	protocol string
-	// address 服务地址
-	// 地址可直接使用hostname,但强烈不建议这样做,可能会同时监听多个本地IP
-	// 如果端口号不填或端口号为0，例如："127.0.0.1:" 或 ":0"，服务端将选择随机可用端口
-	address string
-	// DieChan 应用程序退出信号
-	DieChan chan struct{}
-	// handler 消息处理器
-	handler *Handler
-	// sessionMgr session管理器
-	sessionMgr *session.Manager
-}
-
-func NewServer(protocol, addr string, opts ...Option) *Server {
-	options := Options{
-		Components: &component.Components{},
-		WS: WSOptions{
-			CheckOrigin: func(_ *http.Request) bool { return true },
-		},
-		Packer:          packet.NewNNetPacker(),
-		PacketProcessor: packet.NewNNetProcessor(),
-	}
-	s := &Server{
-		Options:  options,
-		protocol: protocol,
-		address:  addr,
-		DieChan:  make(chan struct{}),
-	}
-
-	for _, opt := range opts {
-		opt(&s.Options)
-	}
-
-	s.handler = NewHandler(s, s.Options.Pipeline, s.Options.PacketProcessor)
-	s.sessionMgr = session.NewManager()
-
-	initPool(0)
-
-	return s
-}
-
-func (s *Server) Serve() {
-	components := s.Components.List()
-	for _, c := range components {
-		err := s.handler.register(c.Comp, c.Opts)
-		if err != nil {
-			// TODO Log and return
-			return
-		}
-	}
-
-	// Initialize components
-	for _, c := range components {
-		c.Comp.OnInit()
-	}
-
-	go func() {
-		if s.WS.IsWebsocket {
-			if len(s.WS.TLSCertificate) != 0 && len(s.WS.TLSKey) != 0 {
-				s.listenAndServeWSTLS()
-			} else {
-				s.listenAndServeWS()
-			}
-		} else {
-			s.listenAndServe()
-		}
-	}()
-
-	go scheduler.Schedule()
-
-	sg := make(chan os.Signal)
-	signal.Notify(sg, syscall.SIGINT, syscall.SIGQUIT, syscall.SIGKILL, syscall.SIGTERM)
-
-	select {
-	case <-s.DieChan:
-		log.Info("The server will shutdown in a few seconds")
-	case s := <-sg:
-		log.Infof("server got signal: %s", s)
-	}
-
-	log.Info("server is stopping...")
-
-	s.shutdown()
-	scheduler.Close()
-}
-
-func (s *Server) Close() {
-	close(s.DieChan)
-}
-
-func (s *Server) shutdown() {
-	components := s.Components.List()
-	compLen := len(components)
-	for i := compLen - 1; i >= 0; i-- {
-		components[i].Comp.OnShutdown()
-	}
-}
-
-func (s *Server) listenAndServe() {
-	listener, err := net.Listen(s.protocol, s.address)
-	if err != nil {
-		panic(err)
-	}
-
-	// 监听成功，服务已启动
-	log.Info("listening...")
-	defer func() {
-		listener.Close()
-		s.Close()
-	}()
-
-	for {
-		conn, err := listener.Accept()
-		if err != nil {
-			if errors.Is(err, net.ErrClosed) {
-				log.Errorf("服务器网络错误 %+v", err)
-				return
-			}
-			log.Errorf("监听错误 %v", err)
-			continue
-		}
-
-		err = pool.SubmitConn(func() {
-			s.handler.handle(conn)
-		})
-		if err != nil {
-			log.Errorf("submit conn pool err: %s", err.Error())
-			continue
-		}
-	}
-}
-
-func (s *Server) listenAndServeWS() {
-	upgrade := websocket.Upgrader{
-		ReadBufferSize:  1024,
-		WriteBufferSize: 1024,
-		CheckOrigin:     s.WS.CheckOrigin,
-	}
-	http.HandleFunc(fmt.Sprintf("/%s/", s.WS.WebsocketPath), func(w http.ResponseWriter, r *http.Request) {
-		conn, err := upgrade.Upgrade(w, r, nil)
-		if err != nil {
-			log.Errorf("Upgrade failure, URI=%s, Error=%s", r.RequestURI, err.Error())
-			return
-		}
-		err = pool.SubmitConn(func() {
-			s.handler.handleWS(conn)
-		})
-		if err != nil {
-			log.Fatalf("submit conn pool err: %s", err.Error())
-		}
-	})
-	if err := http.ListenAndServe(s.address, nil); err != nil {
-		log.Fatal(err.Error())
-	}
-}
-
-func (s *Server) listenAndServeWSTLS() {
-	upgrade := websocket.Upgrader{
-		ReadBufferSize:  1024,
-		WriteBufferSize: 1024,
-		CheckOrigin:     s.WS.CheckOrigin,
-	}
-	http.HandleFunc(fmt.Sprintf("/%s/", s.WS.WebsocketPath), func(w http.ResponseWriter, r *http.Request) {
-		conn, err := upgrade.Upgrade(w, r, nil)
-		if err != nil {
-			log.Errorf("Upgrade failure, URI=%s, Error=%s", r.RequestURI, err.Error())
-			return
-		}
-		err = pool.SubmitConn(func() {
-			s.handler.handleWS(conn)
-		})
-		if err != nil {
-			log.Fatalf("submit conn pool err: %s", err.Error())
-		}
-	})
-	if err := http.ListenAndServeTLS(s.address, s.WS.TLSCertificate, s.WS.TLSKey, nil); err != nil {
-		log.Fatal(err.Error())
-	}
-}
diff --git a/nnet/server_test.go b/nnet/server_test.go
deleted file mode 100644
index e7fc2ea..0000000
--- a/nnet/server_test.go
+++ /dev/null
@@ -1,9 +0,0 @@
-package nnet
-
-import "testing"
-
-func TestServer(t *testing.T) {
-	server := NewServer("tcp4", ":22112")
-
-	server.Serve()
-}
diff --git a/packet/interface.go b/packet/interface.go
deleted file mode 100644
index 95b5b98..0000000
--- a/packet/interface.go
+++ /dev/null
@@ -1,25 +0,0 @@
-package packet
-
-import (
-	"git.noahlan.cn/northlan/nnet/nface"
-)
-
-// Type 数据帧类型，如：握手，心跳，数据 等
-type Type byte
-
-type (
-	Packer interface {
-		// Pack 从原始raw bytes创建一个用于网络传输的 数据帧结构
-		Pack(typ Type, data []byte) ([]byte, error)
-
-		// Unpack 解包
-		Unpack(data []byte) ([]interface{}, error)
-	}
-
-	// Processor 数据帧处理器，拆包之后的处理
-	Processor interface {
-		// ProcessPacket 单个数据包处理方法
-		// packet 为实际数据包，是 packet.Packer 的Unpack方法拆包出来的数据指针
-		ProcessPacket(conn nface.IConnection, packet interface{}) error
-	}
-)
diff --git a/packet/packer_nnet.go b/packet/packer_nnet.go
deleted file mode 100644
index 91470c3..0000000
--- a/packet/packer_nnet.go
+++ /dev/null
@@ -1,123 +0,0 @@
-package packet
-
-import (
-	"bytes"
-	"errors"
-)
-
-var _ Packer = (*NNetPacker)(nil)
-
-type NNetPacker struct {
-	buf  *bytes.Buffer
-	size int  // 最近一次 长度
-	typ  byte // 最近一次 数据帧类型
-}
-
-// Codec constants.
-const (
-	headLength    = 4
-	maxPacketSize = 64 * 1024
-)
-
-var ErrPacketSizeExceed = errors.New("codec: packet size exceed")
-
-func NewNNetPacker() Packer {
-	return &NNetPacker{
-		buf:  bytes.NewBuffer(nil),
-		size: -1,
-	}
-}
-
-func (d *NNetPacker) Pack(typ Type, data []byte) ([]byte, error) {
-	if typ < Handshake || typ > Kick {
-		return nil, ErrWrongPacketType
-	}
-
-	p := &Packet{Type: typ, Length: uint32(len(data))}
-	buf := make([]byte, p.Length+headLength)
-
-	// header
-	buf[0] = byte(p.Type)
-	copy(buf[1:headLength], d.intToBytes(p.Length))
-
-	// body
-	copy(buf[headLength:], data)
-
-	return buf, nil
-}
-
-// Encode packet data length to bytes(Big end)
-func (d *NNetPacker) intToBytes(n uint32) []byte {
-	buf := make([]byte, 3)
-	buf[0] = byte((n >> 16) & 0xFF)
-	buf[1] = byte((n >> 8) & 0xFF)
-	buf[2] = byte(n & 0xFF)
-	return buf
-}
-
-func (d *NNetPacker) Unpack(data []byte) ([]interface{}, error) {
-	d.buf.Write(data) // copy
-
-	var (
-		packets []interface{}
-		err     error
-	)
-
-	// 检查包长度
-	if d.buf.Len() < headLength {
-		return nil, err
-	}
-
-	// 第一次拆包
-	if d.size < 0 {
-		if err = d.readHeader(); err != nil {
-			return nil, err
-		}
-	}
-
-	for d.size <= d.buf.Len() {
-		// 读取
-		p := &Packet{
-			Type:   Type(d.typ),
-			Length: uint32(d.size),
-			Data:   d.buf.Next(d.size),
-		}
-		packets = append(packets, p)
-
-		// 剩余数据不满足至少一个数据帧，重置数据帧长度
-		// 数据缓存内存 保留至 下一次进入本方法以继续拆包
-		if d.buf.Len() < headLength {
-			d.size = -1
-			break
-		}
-		// 读取下一个包 next
-		if err = d.readHeader(); err != nil {
-			return packets, err
-		}
-	}
-	return packets, nil
-}
-
-func (d *NNetPacker) readHeader() error {
-	header := d.buf.Next(headLength)
-	d.typ = header[0]
-	if d.typ < Handshake || d.typ > Kick {
-		return ErrWrongPacketType
-	}
-	d.size = d.bytesToInt(header[1:])
-
-	// 最大包限定
-	if d.size > maxPacketSize {
-		return ErrPacketSizeExceed
-	}
-	return nil
-}
-
-// Decode packet data length byte to int(Big end)
-func (d *NNetPacker) bytesToInt(b []byte) int {
-	result := 0
-	for _, v := range b {
-		result = result<<8 + int(v)
-	}
-	return result
-}
diff --git a/packet/packet_nnet.go b/packet/packet_nnet.go
deleted file mode 100644
index 537b672..0000000
--- a/packet/packet_nnet.go
+++ /dev/null
@@ -1,40 +0,0 @@
-package packet
-
-import (
-	"errors"
-)
-
-const (
-	// Default 默认，暂无意义
-	Default Type = iota
-
-	// Handshake 握手数据(服务端主动发起)
-	Handshake = 0x01
-
-	// HandshakeAck 握手回复(客户端回复)
-	HandshakeAck = 0x02
-
-	// Heartbeat 心跳(服务端发起)
-	Heartbeat = 0x03
-
-	// Data 数据传输
-	Data = 0x04
-
-	// Kick 服务端主动断开连接
-	Kick = 0x05
-)
-
-// ErrWrongPacketType represents a wrong packet type.
-var ErrWrongPacketType = errors.New("wrong packet type")
-
-type Packet struct {
-	Type   Type   // 数据帧 类型
-	Length uint32 // 数据长度
-	Data   []byte // 原始数据
-}
-
-func New() *Packet {
-	return &Packet{
-		Type: Default,
-	}
-}
diff --git a/packet/processor_nnet.go b/packet/processor_nnet.go
deleted file mode 100644
index b81cb11..0000000
--- a/packet/processor_nnet.go
+++ /dev/null
@@ -1,40 +0,0 @@
-package packet
-
-import (
-	"fmt"
-	"git.noahlan.cn/northlan/nnet/log"
-	"git.noahlan.cn/northlan/nnet/nface"
-)
-
-type NNetProcessor struct{}
-
-func NewNNetProcessor() Processor {
-	return &NNetProcessor{}
-}
-
-func (d *NNetProcessor) ProcessPacket(conn nface.IConnection, packet interface{}) error {
-	p := packet.(*Packet)
-	switch p.Type {
-	case Handshake:
-		// TODO validate handshake
-		if _, err := conn.Conn().Write([]byte{}); err != nil {
-			return err
-		}
-		conn.SetStatus(nface.StatusPrepare)
-		log.Debugf("Connection handshake Id=%d, Remote=%s", conn.ID(), conn.Conn().RemoteAddr())
-	case HandshakeAck:
-		conn.SetStatus(nface.StatusWorking)
-		log.Debugf("Receive handshake ACK Id=%d, Remote=%s", conn.ID(), conn.Conn().RemoteAddr())
-	case Data:
-		if conn.Status() < nface.StatusWorking {
-			return fmt.Errorf("receive data on socket which not yet ACK, session will be closed immediately, remote=%s",
-				conn.Conn().RemoteAddr())
-		}
-
-		// TODO message data 处理
-	case Heartbeat:
-		// expected
-	}
-
-	return nil
-}
diff --git a/scheduler/scheduler.go b/scheduler/scheduler.go
index 3d8ce6e..3155275 100644
--- a/scheduler/scheduler.go
+++ b/scheduler/scheduler.go
@@ -1,8 +1,8 @@
 package scheduler
 
 import (
-	"git.noahlan.cn/northlan/nnet/env"
-	"git.noahlan.cn/northlan/nnet/log"
+	"git.noahlan.cn/northlan/nnet/internal/env"
+	"git.noahlan.cn/northlan/nnet/internal/log"
 	"runtime/debug"
 	"sync/atomic"
 	"time"
diff --git a/scheduler/timer.go b/scheduler/timer.go
index e9815aa..586f30d 100644
--- a/scheduler/timer.go
+++ b/scheduler/timer.go
@@ -1,7 +1,7 @@
 package scheduler
 
 import (
-	"git.noahlan.cn/northlan/nnet/log"
+	"git.noahlan.cn/northlan/nnet/internal/log"
 	"math"
 	"runtime/debug"
 	"sync"
diff --git a/serialize/json/json.go b/serialize/json/json.go
index b75bd17..28003b6 100644
--- a/serialize/json/json.go
+++ b/serialize/json/json.go
@@ -2,7 +2,7 @@ package json
 
 import (
 	"encoding/json"
-	"git.noahlan.cn/northlan/nnet/serialize"
+	"git.noahlan.cn/northlan/nnet/core/serialize"
 )
 
 type Serializer struct{}
diff --git a/serialize/protobuf/protobuf.go b/serialize/protobuf/protobuf.go
index 88bff2d..ec69388 100644
--- a/serialize/protobuf/protobuf.go
+++ b/serialize/protobuf/protobuf.go
@@ -2,7 +2,7 @@ package protobuf
 
 import (
 	"errors"
-	"git.noahlan.cn/northlan/nnet/serialize"
+	"git.noahlan.cn/northlan/nnet/core/serialize"
 	"google.golang.org/protobuf/proto"
 )
 
diff --git a/serialize/protobuf/testdata/test.pb.go b/serialize/protobuf/testdata/test.pb.go
new file mode 100644
index 0000000..1587859
--- /dev/null
+++ b/serialize/protobuf/testdata/test.pb.go
@@ -0,0 +1,203 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.28.0
+// 	protoc        v3.19.4
+// source: test.proto
+
+package testdata
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+type Ping struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Content string `protobuf:"bytes,1,opt,name=Content,proto3" json:"Content,omitempty"`
+}
+
+func (x *Ping) Reset() {
+	*x = Ping{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_test_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Ping) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Ping) ProtoMessage() {}
+
+func (x *Ping) ProtoReflect() protoreflect.Message {
+	mi := &file_test_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Ping.ProtoReflect.Descriptor instead.
+func (*Ping) Descriptor() ([]byte, []int) {
+	return file_test_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *Ping) GetContent() string {
+	if x != nil {
+		return x.Content
+	}
+	return ""
+}
+
+type Pong struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Content string `protobuf:"bytes,1,opt,name=Content,proto3" json:"Content,omitempty"`
+}
+
+func (x *Pong) Reset() {
+	*x = Pong{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_test_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Pong) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Pong) ProtoMessage() {}
+
+func (x *Pong) ProtoReflect() protoreflect.Message {
+	mi := &file_test_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Pong.ProtoReflect.Descriptor instead.
+func (*Pong) Descriptor() ([]byte, []int) {
+	return file_test_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *Pong) GetContent() string {
+	if x != nil {
+		return x.Content
+	}
+	return ""
+}
+
+var File_test_proto protoreflect.FileDescriptor
+
+var file_test_proto_rawDesc = []byte{
+	0x0a, 0x0a, 0x74, 0x65, 0x73, 0x74, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x08, 0x74, 0x65,
+	0x73, 0x74, 0x64, 0x61, 0x74, 0x61, 0x22, 0x20, 0x0a, 0x04, 0x50, 0x69, 0x6e, 0x67, 0x12, 0x18,
+	0x0a, 0x07, 0x43, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52,
+	0x07, 0x43, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x22, 0x20, 0x0a, 0x04, 0x50, 0x6f, 0x6e, 0x67,
+	0x12, 0x18, 0x0a, 0x07, 0x43, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x18, 0x01, 0x20, 0x01, 0x28,
+	0x09, 0x52, 0x07, 0x43, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x42, 0x0b, 0x5a, 0x09, 0x2f, 0x74,
+	0x65, 0x73, 0x74, 0x64, 0x61, 0x74, 0x61, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_test_proto_rawDescOnce sync.Once
+	file_test_proto_rawDescData = file_test_proto_rawDesc
+)
+
+func file_test_proto_rawDescGZIP() []byte {
+	file_test_proto_rawDescOnce.Do(func() {
+		file_test_proto_rawDescData = protoimpl.X.CompressGZIP(file_test_proto_rawDescData)
+	})
+	return file_test_proto_rawDescData
+}
+
+var file_test_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
+var file_test_proto_goTypes = []interface{}{
+	(*Ping)(nil), // 0: testdata.Ping
+	(*Pong)(nil), // 1: testdata.Pong
+}
+var file_test_proto_depIdxs = []int32{
+	0, // [0:0] is the sub-list for method output_type
+	0, // [0:0] is the sub-list for method input_type
+	0, // [0:0] is the sub-list for extension type_name
+	0, // [0:0] is the sub-list for extension extendee
+	0, // [0:0] is the sub-list for field type_name
+}
+
+func init() { file_test_proto_init() }
+func file_test_proto_init() {
+	if File_test_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_test_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Ping); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_test_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Pong); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_test_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   2,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_test_proto_goTypes,
+		DependencyIndexes: file_test_proto_depIdxs,
+		MessageInfos:      file_test_proto_msgTypes,
+	}.Build()
+	File_test_proto = out.File
+	file_test_proto_rawDesc = nil
+	file_test_proto_goTypes = nil
+	file_test_proto_depIdxs = nil
+}
diff --git a/session/session.go b/session/session.go
index 2772b36..ec1171e 100644
--- a/session/session.go
+++ b/session/session.go
@@ -1,13 +1,10 @@
 package session
 
 import (
-	"git.noahlan.cn/northlan/nnet/nface"
 	"sync"
 	"sync/atomic"
 )
 
-var _ nface.ISession = (*Session)(nil)
-
 type Session struct {
 	sync.RWMutex // 数据锁
 
@@ -16,7 +13,7 @@ type Session struct {
 	data map[string]interface{} // session数据存储（内存）
 }
 
-func New() nface.ISession {
+func NewSession() *Session {
 	return &Session{
 		id:   sessionIDMgrInstance.SessionID(),
 		uid:  "",
diff --git a/session/session_mgr.go b/session/session_mgr.go
index 6821c23..45d3858 100644
--- a/session/session_mgr.go
+++ b/session/session_mgr.go
@@ -1,43 +1,42 @@
 package session
 
 import (
-	"git.noahlan.cn/northlan/nnet/nface"
 	"sync"
 )
 
 type Manager struct {
 	sync.RWMutex
-	sessions map[int64]nface.ISession
+	sessions map[int64]*Session
 }
 
-func NewManager() *Manager {
+func NewSessionMgr() *Manager {
 	return &Manager{
 		RWMutex:  sync.RWMutex{},
-		sessions: make(map[int64]nface.ISession),
+		sessions: make(map[int64]*Session),
 	}
 }
 
-func (m *Manager) StoreSession(s nface.ISession) {
+func (m *Manager) StoreSession(s *Session) {
 	m.Lock()
 	defer m.Unlock()
 
 	m.sessions[s.ID()] = s
 }
 
-func (m *Manager) FindSession(sid int64) nface.ISession {
+func (m *Manager) FindSession(sid int64) *Session {
 	m.RLock()
 	defer m.RUnlock()
 
 	return m.sessions[sid]
 }
 
-func (m *Manager) FindOrCreateSession(sid int64) nface.ISession {
+func (m *Manager) FindOrCreateSession(sid int64) *Session {
 	m.RLock()
 	s, ok := m.sessions[sid]
 	m.RUnlock()
 
 	if !ok {
-		s = New()
+		s = NewSession()
 
 		m.Lock()
 		m.sessions[s.ID()] = s