modify Dockerfile

Dockerfile

@@ -1,11 +1,11 @@
 FROM alpine
 COPY hmq /
-COPY broker.config /
-COPY tls /tls
+COPY ssl /ssl
 COPY conf /conf
 
 EXPOSE 1883
 EXPOSE 1888
+EXPOSE 8883
 EXPOSE 1993
 
 CMD ["/hmq"]

README.md

@@ -15,6 +15,7 @@ $ go run main.go
 ### broker.config
 ~~~
 {
+	"workerNum": 4096,
 	"port": "1883",
 	"host": "0.0.0.0",
 	"cluster": {
@@ -40,7 +41,7 @@ $ go run main.go
 
 ### Features and Future
 
-* Supports QOS 0
+* Supports QOS 0 and 1
 
 * Cluster Support
 

_config.yml

@@ -1 +0,0 @@
-theme: jekyll-theme-slate

broker/auth.go

@@ -14,7 +14,7 @@ const (
 )
 
 func (c *client) CheckTopicAuth(typ int, topic string) bool {
-	if !c.broker.config.Acl {
+	if c.typ != CLIENT || !c.broker.config.Acl {
 		return true
 	}
 	if strings.HasPrefix(topic, "$queue/") {

broker/broker.go

@@ -3,12 +3,16 @@ package broker
 import (
 	"crypto/tls"
 	"hmq/lib/acl"
-	"hmq/lib/message"
 	"net"
 	"net/http"
+	"runtime/debug"
+	"sync"
 	"sync/atomic"
 	"time"
 
+	"github.com/eclipse/paho.mqtt.golang/packets"
+	"github.com/shirou/gopsutil/mem"
+
 	"golang.org/x/net/websocket"
 
 	log "github.com/cihub/seelog"
@@ -17,12 +21,13 @@ import (
 type Broker struct {
 	id        string
 	cid       uint64
+	mu        sync.Mutex
 	config    *Config
 	tlsConfig *tls.Config
 	AclConfig *acl.ACLConfig
-	clients   cMap
-	routes    cMap
-	remotes   cMap
+	clients   sync.Map
+	routes    sync.Map
+	remotes   sync.Map
 	sl        *Sublist
 	rl        *RetainList
 	queues    map[string]int
@@ -30,14 +35,11 @@ type Broker struct {
 
 func NewBroker(config *Config) (*Broker, error) {
 	b := &Broker{
-		id:      GenUniqueId(),
-		config:  config,
-		sl:      NewSublist(),
-		rl:      NewRetainList(),
-		queues:  make(map[string]int),
-		clients: NewClientMap(),
-		routes:  NewClientMap(),
-		remotes: NewClientMap(),
+		id:     GenUniqueId(),
+		config: config,
+		sl:     NewSublist(),
+		rl:     NewRetainList(),
+		queues: make(map[string]int),
 	}
 	if b.config.TlsPort != "" {
 		tlsconfig, err := NewTLSConfig(b.config.TlsInfo)
@@ -64,17 +66,48 @@ func (b *Broker) Start() {
 		log.Error("broker is null")
 		return
 	}
+	StartDispatcher()
+
+	//listen clinet over tcp
 	if b.config.Port != "" {
-		go b.StartListening(CLIENT)
+		go b.StartClientListening(false)
 	}
+
+	//listen for cluster
 	if b.config.Cluster.Port != "" {
-		go b.StartListening(ROUTER)
+		go b.StartClusterListening()
 	}
+
+	//listen for websocket
 	if b.config.WsPort != "" {
 		go b.StartWebsocketListening()
 	}
+
+	//listen client over tls
 	if b.config.TlsPort != "" {
-		go b.StartTLSListening()
+		go b.StartClientListening(true)
+	}
+
+	//connect on other node in cluster
+	if len(b.config.Cluster.Routes) > 0 {
+		b.ConnectToRouters()
+	}
+
+	//system montior
+	go StateMonitor()
+
+}
+
+func StateMonitor() {
+	v, _ := mem.VirtualMemory()
+	timeSticker := time.NewTicker(time.Second * 30)
+	for {
+		select {
+		case <-timeSticker.C:
+			if v.UsedPercent > 75 {
+				debug.FreeOSMemory()
+			}
+		}
 	}
 }
 
@@ -83,7 +116,12 @@ func (b *Broker) StartWebsocketListening() {
 	hp := ":" + b.config.WsPort
 	log.Info("Start Webscoker Listening on ", hp, path)
 	http.Handle(path, websocket.Handler(b.wsHandler))
-	err := http.ListenAndServe(hp, nil)
+	var err error
+	if b.config.WsTLS {
+		err = http.ListenAndServeTLS(hp, b.config.TlsInfo.CertFile, b.config.TlsInfo.KeyFile, nil)
+	} else {
+		err = http.ListenAndServe(hp, nil)
+	}
 	if err != nil {
 		log.Error("ListenAndServe: " + err.Error())
 		return
@@ -91,17 +129,27 @@ func (b *Broker) StartWebsocketListening() {
 }
 
 func (b *Broker) wsHandler(ws *websocket.Conn) {
+	// io.Copy(ws, ws)
 	atomic.AddUint64(&b.cid, 1)
-	go b.handleConnection(CLIENT, ws, b.cid)
+	ws.PayloadType = websocket.BinaryFrame
+	b.handleConnection(CLIENT, ws, b.cid)
 }
 
-func (b *Broker) StartTLSListening() {
-	hp := b.config.TlsHost + ":" + b.config.TlsPort
-	log.Info("Start TLS Listening client on ", hp)
-
-	l, e := tls.Listen("tcp", hp, b.tlsConfig)
-	if e != nil {
-		log.Error("Error listening on ", e)
+func (b *Broker) StartClientListening(Tls bool) {
+	var hp string
+	var err error
+	var l net.Listener
+	if Tls {
+		hp = b.config.TlsHost + ":" + b.config.TlsPort
+		l, err = tls.Listen("tcp", hp, b.tlsConfig)
+		log.Info("Start TLS Listening client on ", hp)
+	} else {
+		hp := b.config.Host + ":" + b.config.Port
+		l, err = net.Listen("tcp", hp)
+		log.Info("Start Listening client on ", hp)
+	}
+	if err != nil {
+		log.Error("Error listening on ", err)
 		return
 	}
 	tmpDelay := 10 * ACCEPT_MIN_SLEEP
@@ -124,18 +172,42 @@ func (b *Broker) StartTLSListening() {
 		tmpDelay = ACCEPT_MIN_SLEEP
 		atomic.AddUint64(&b.cid, 1)
 		go b.handleConnection(CLIENT, conn, b.cid)
+
 	}
 }
 
-func (b *Broker) StartListening(typ int) {
-	var hp string
-	if typ == CLIENT {
-		hp = b.config.Host + ":" + b.config.Port
-		log.Info("Start Listening client on ", hp)
-	} else if typ == ROUTER {
-		hp = b.config.Cluster.Host + ":" + b.config.Cluster.Port
-		log.Info("Start Listening cluster on ", hp)
+func (b *Broker) Handshake(conn net.Conn) bool {
+
+	nc := tls.Server(conn, b.tlsConfig)
+	time.AfterFunc(DEFAULT_TLS_TIMEOUT, func() { TlsTimeout(nc) })
+	nc.SetReadDeadline(time.Now().Add(DEFAULT_TLS_TIMEOUT))
+
+	// Force handshake
+	if err := nc.Handshake(); err != nil {
+		log.Error("TLS handshake error, ", err)
+		return false
 	}
+	nc.SetReadDeadline(time.Time{})
+	return true
+
+}
+
+func TlsTimeout(conn *tls.Conn) {
+	nc := conn
+	// Check if already closed
+	if nc == nil {
+		return
+	}
+	cs := nc.ConnectionState()
+	if !cs.HandshakeComplete {
+		log.Error("TLS handshake timeout")
+		nc.Close()
+	}
+}
+
+func (b *Broker) StartClusterListening() {
+	var hp string = b.config.Cluster.Host + ":" + b.config.Cluster.Port
+	log.Info("Start Listening cluster on ", hp)
 
 	l, e := net.Listen("tcp", hp)
 	if e != nil {
@@ -143,6 +215,7 @@ func (b *Broker) StartListening(typ int) {
 		return
 	}
 
+	var idx uint64 = 0
 	tmpDelay := 10 * ACCEPT_MIN_SLEEP
 	for {
 		conn, err := l.Accept()
@@ -161,48 +234,51 @@ func (b *Broker) StartListening(typ int) {
 			continue
 		}
 		tmpDelay = ACCEPT_MIN_SLEEP
-		atomic.AddUint64(&b.cid, 1)
-		go b.handleConnection(typ, conn, b.cid)
+
+		go b.handleConnection(ROUTER, conn, idx)
 	}
 }
 
 func (b *Broker) handleConnection(typ int, conn net.Conn, idx uint64) {
 	//process connect packet
-	buf, err := ReadPacket(conn)
+	packet, err := packets.ReadPacket(conn)
 	if err != nil {
 		log.Error("read connect packet error: ", err)
 		return
 	}
-	connMsg, err := DecodeConnectMessage(buf)
+	if packet == nil {
+		log.Error("received nil packet")
+		return
+	}
+	msg, ok := packet.(*packets.ConnectPacket)
+	if !ok {
+		log.Error("received msg that was not Connect")
+		return
+	}
+	connack := packets.NewControlPacket(packets.Connack).(*packets.ConnackPacket)
+	connack.ReturnCode = packets.Accepted
+	connack.SessionPresent = msg.CleanSession
+	err = connack.Write(conn)
 	if err != nil {
-		log.Error(err)
+		log.Error("send connack error, ", err, " clientID = ", msg.ClientIdentifier)
 		return
 	}
 
-	connack := message.NewConnackMessage()
-	connack.SetReturnCode(message.ConnectionAccepted)
-	ack, _ := EncodeMessage(connack)
-	err1 := WriteBuffer(conn, ack)
-	if err1 != nil {
-		log.Error("send connack error, ", err1)
-		return
-	}
-
-	willmsg := message.NewPublishMessage()
-	if connMsg.WillFlag() {
-		willmsg.SetQoS(connMsg.WillQos())
-		willmsg.SetPayload(connMsg.WillMessage())
-		willmsg.SetRetain(connMsg.WillRetain())
-		willmsg.SetTopic(connMsg.WillTopic())
-		willmsg.SetDup(false)
+	willmsg := packets.NewControlPacket(packets.Publish).(*packets.PublishPacket)
+	if msg.WillFlag {
+		willmsg.Qos = msg.WillQos
+		willmsg.TopicName = msg.WillTopic
+		willmsg.Retain = msg.WillRetain
+		willmsg.Payload = msg.WillMessage
+		willmsg.Dup = msg.Dup
 	} else {
 		willmsg = nil
 	}
 	info := info{
-		clientID:  connMsg.ClientId(),
-		username:  connMsg.Username(),
-		password:  connMsg.Password(),
-		keepalive: connMsg.KeepAlive(),
+		clientID:  msg.ClientIdentifier,
+		username:  msg.Username,
+		password:  msg.Password,
+		keepalive: msg.Keepalive,
 		willMsg:   willmsg,
 	}
 
@@ -212,113 +288,162 @@ func (b *Broker) handleConnection(typ int, conn net.Conn, idx uint64) {
 		conn:   conn,
 		info:   info,
 	}
+
 	c.init()
 
+	cid := c.info.clientID
+
 	var msgPool *MessagePool
 	var exist bool
-	var old *client
-	cid := string(c.info.clientID)
-	if typ == CLIENT {
-		old, exist = b.clients.Update(cid, c)
+	var old interface{}
+
+	switch typ {
+	case CLIENT:
 		msgPool = MSGPool[idx%MessagePoolNum].GetPool()
-	} else if typ == ROUTER {
-		old, exist = b.routes.Update(cid, c)
-		msgPool = MSGPool[MessagePoolNum].GetPool()
+		c.mp = msgPool
+		old, exist = b.clients.Load(cid)
+		if exist {
+			log.Warn("client exist, close old...", " clientID = ", c.info.clientID)
+			ol, ok := old.(*client)
+			if ok {
+				msg := &Message{client: c, packet: DisconnectdPacket}
+				ol.mp.queue <- msg
+			}
+		}
+		b.clients.Store(cid, c)
+	case ROUTER:
+		msgPool = MSGPool[(MessagePoolNum + idx)].GetPool()
+		c.mp = msgPool
+		old, exist = b.routes.Load(cid)
+		if exist {
+			log.Warn("router exist, close old...")
+			ol, ok := old.(*client)
+			if ok {
+				msg := &Message{client: c, packet: DisconnectdPacket}
+				ol.mp.queue <- msg
+			}
+		}
+		b.routes.Store(cid, c)
 	}
-	if exist {
-		log.Warn("client or routers exists, close old...")
-		old.Close()
+
+	go c.readLoop()
+	if typ == ROUTER {
+		c.SendInfo()
+		c.StartPing()
 	}
-	c.readLoop(msgPool)
 }
 
 func (b *Broker) ConnectToRouters() {
-	for i := 0; i < len(b.config.Cluster.Routes); i++ {
-		url := b.config.Cluster.Routes[i]
-		go b.connectRouter(url, "")
+	for _, v := range b.config.Cluster.Routes {
+		go b.connectRouter(v, "")
 	}
 }
 
 func (b *Broker) connectRouter(url, remoteID string) {
+	var conn net.Conn
+	var err error
 	for {
-		conn, err := net.Dial("tcp", url)
+		conn, err = net.Dial("tcp", url)
 		if err != nil {
 			log.Error("Error trying to connect to route: ", err)
-			select {
-			case <-time.After(DEFAULT_ROUTE_CONNECT):
-				log.Debug("Connect to route timeout ,retry...")
-				continue
-			}
+			log.Debug("Connect to route timeout ,retry...")
+			time.Sleep(5 * time.Second)
+			continue
 		}
-		route := &route{
-			remoteID:  remoteID,
-			remoteUrl: url,
-		}
-		cid := GenUniqueId()
-		info := info{
-			clientID: []byte(cid),
-		}
-		c := &client{
-			typ:   REMOTE,
-			conn:  conn,
-			route: route,
-			info:  info,
-		}
-		b.remotes.Set(cid, c)
-		c.SendConnect()
-		c.SendInfo()
-		// s.createRemote(conn, route)
-		msgPool := MSGPool[(MessagePoolNum + 1)].GetPool()
-		c.readLoop(msgPool)
+		break
 	}
+	route := route{
+		remoteID:  remoteID,
+		remoteUrl: conn.RemoteAddr().String(),
+	}
+	cid := GenUniqueId()
+
+	info := info{
+		clientID:  cid,
+		keepalive: 60,
+	}
+
+	c := &client{
+		broker: b,
+		typ:    REMOTE,
+		conn:   conn,
+		route:  route,
+		info:   info,
+	}
+	c.init()
+	b.remotes.Store(cid, c)
+
+	c.mp = MSGPool[(MessagePoolNum + 1)].GetPool()
+
+	c.SendConnect()
+	c.SendInfo()
+
+	go c.readLoop()
+	go c.StartPing()
+
 }
 
 func (b *Broker) CheckRemoteExist(remoteID, url string) bool {
 	exist := false
-	remotes := b.remotes.Items()
-	for _, v := range remotes {
-		if v.route.remoteUrl == url {
-			// if v.route.remoteID == "" || v.route.remoteID != remoteID {
-			v.route.remoteID = remoteID
-			// }
-			exist = true
-			break
+	b.remotes.Range(func(key, value interface{}) bool {
+		v, ok := value.(*client)
+		if ok {
+			if v.route.remoteUrl == url {
+				v.route.remoteID = remoteID
+				exist = true
+				return false
+			}
 		}
-	}
+		return true
+	})
 	return exist
 }
 
 func (b *Broker) SendLocalSubsToRouter(c *client) {
-	clients := b.clients.Items()
-	subMsg := message.NewSubscribeMessage()
-	for _, client := range clients {
-		subs := client.subs
-		for _, sub := range subs {
-			subMsg.AddTopic(sub.topic, sub.qos)
+	subInfo := packets.NewControlPacket(packets.Subscribe).(*packets.SubscribePacket)
+	b.clients.Range(func(key, value interface{}) bool {
+		client, ok := value.(*client)
+		if ok {
+			subs := client.subs
+			for _, sub := range subs {
+				subInfo.Topics = append(subInfo.Topics, string(sub.topic))
+				subInfo.Qoss = append(subInfo.Qoss, sub.qos)
+			}
+		}
+		return true
+	})
+	if len(subInfo.Topics) > 0 {
+		err := c.WriterPacket(subInfo)
+		if err != nil {
+			log.Error("Send localsubs To Router error :", err)
 		}
-	}
-	err := c.writeMessage(subMsg)
-	if err != nil {
-		log.Error("Send localsubs To Router error :", err)
 	}
 }
 
-func (b *Broker) BroadcastInfoMessage(remoteID string, msg message.Message) {
-	remotes := b.remotes.Items()
-	for _, r := range remotes {
-		if r.route.remoteID == remoteID {
-			continue
+func (b *Broker) BroadcastInfoMessage(remoteID string, msg *packets.PublishPacket) {
+	b.routes.Range(func(key, value interface{}) bool {
+		r, ok := value.(*client)
+		if ok {
+			if r.route.remoteID == remoteID {
+				return true
+			}
+			r.WriterPacket(msg)
 		}
-		r.writeMessage(msg)
-	}
+		return true
+
+	})
 	// log.Info("BroadcastInfoMessage success ")
 }
 
-func (b *Broker) BroadcastSubOrUnsubMessage(buf []byte) {
-	remotes := b.remotes.Items()
-	for _, r := range remotes {
-		r.writeBuffer(buf)
-	}
+func (b *Broker) BroadcastSubOrUnsubMessage(packet packets.ControlPacket) {
+
+	b.routes.Range(func(key, value interface{}) bool {
+		r, ok := value.(*client)
+		if ok {
+			r.WriterPacket(packet)
+		}
+		return true
+	})
 	// log.Info("BroadcastSubscribeMessage remotes: ", s.remotes)
 }
 
@@ -327,48 +452,40 @@ func (b *Broker) removeClient(c *client) {
 	typ := c.typ
 	switch typ {
 	case CLIENT:
-		b.clients.Remove(clientId)
+		b.clients.Delete(clientId)
 	case ROUTER:
-		b.routes.Remove(clientId)
+		b.routes.Delete(clientId)
 	case REMOTE:
-		b.remotes.Remove(clientId)
+		b.remotes.Delete(clientId)
 	}
 	// log.Info("delete client ,", clientId)
 }
 
-func (b *Broker) ProcessPublishMessage(msg *message.PublishMessage) {
-	if b == nil {
-		return
-	}
-	topic := string(msg.Topic())
-
+func (b *Broker) PublishMessage(packet *packets.PublishPacket) {
+	topic := packet.TopicName
 	r := b.sl.Match(topic)
-	// log.Info("psubs num: ", len(r.psubs))
-	if len(r.qsubs) == 0 && len(r.psubs) == 0 {
+	if len(r.psubs) == 0 {
 		return
 	}
 
 	for _, sub := range r.psubs {
 		if sub != nil {
-			err := sub.client.writeMessage(msg)
+			err := sub.client.WriterPacket(packet)
 			if err != nil {
 				log.Error("process message for psub error,  ", err)
 			}
 		}
 	}
+}
 
-	for i, sub := range r.qsubs {
-		// s.qmu.Lock()
-		if cnt, exist := b.queues[string(sub.topic)]; exist && i == cnt {
-			if sub != nil {
-				err := sub.client.writeMessage(msg)
-				if err != nil {
-					log.Error("process will message for qsub error,  ", err)
-				}
-			}
-			b.queues[topic] = (b.queues[topic] + 1) % len(r.qsubs)
-			break
-		}
-		// s.qmu.Unlock()
+func (b *Broker) BroadcastUnSubscribe(subs map[string]*subscription) {
+
+	unsub := packets.NewControlPacket(packets.Unsubscribe).(*packets.UnsubscribePacket)
+	for topic, _ := range subs {
+		unsub.Topics = append(unsub.Topics, topic)
+	}
+
+	if len(unsub.Topics) > 0 {
+		b.BroadcastSubOrUnsubMessage(unsub)
 	}
 }

broker/client.go

@@ -1,11 +1,12 @@
 package broker
 
 import (
-	"errors"
-	"hmq/lib/message"
 	"net"
 	"strings"
 	"sync"
+	"time"
+
+	"github.com/eclipse/paho.mqtt.golang/packets"
 
 	log "github.com/cihub/seelog"
 )
@@ -20,6 +21,10 @@ const (
 	//REMOTE is the router connect to other cluster
 	REMOTE = 2
 )
+const (
+	Connected    = 1
+	Disconnected = 2
+)
 
 type client struct {
 	typ    int
@@ -27,23 +32,33 @@ type client struct {
 	broker *Broker
 	conn   net.Conn
 	info   info
-	route  *route
+	route  route
+	status int
+	closed chan int
+	smu    sync.RWMutex
+	mp     *MessagePool
 	subs   map[string]*subscription
+	rsubs  map[string]*subInfo
+}
+
+type subInfo struct {
+	sub *subscription
+	num int
 }
 
 type subscription struct {
 	client *client
-	topic  []byte
+	topic  string
 	qos    byte
 	queue  bool
 }
 
 type info struct {
-	clientID  []byte
-	username  []byte
+	clientID  string
+	username  string
 	password  []byte
 	keepalive uint16
-	willMsg   *message.PublishMessage
+	willMsg   *packets.PublishPacket
 	localIP   string
 	remoteIP  string
 }
@@ -53,125 +68,167 @@ type route struct {
 	remoteUrl string
 }
 
+var (
+	DisconnectdPacket = packets.NewControlPacket(packets.Disconnect).(*packets.DisconnectPacket)
+)
+
 func (c *client) init() {
+	c.smu.Lock()
+	defer c.smu.Unlock()
+	c.status = Connected
+	c.closed = make(chan int, 1)
+
+	c.rsubs = make(map[string]*subInfo)
 	c.subs = make(map[string]*subscription, 10)
 	c.info.localIP = strings.Split(c.conn.LocalAddr().String(), ":")[0]
 	c.info.remoteIP = strings.Split(c.conn.RemoteAddr().String(), ":")[0]
 }
 
-func (c *client) readLoop(msgPool *MessagePool) {
+func (c *client) keepAlive(ch chan int) {
+	defer close(ch)
+	keepalive := time.Duration(c.info.keepalive*3/2) * time.Second
+	timer := time.NewTimer(keepalive)
+	msgPool := c.mp
+
+	for {
+		select {
+		case <-ch:
+			timer.Reset(keepalive)
+		case <-timer.C:
+			log.Error("Client exceeded timeout, disconnecting. clientID = ", c.info.clientID, " keepalive = ", c.info.keepalive)
+			msg := &Message{client: c, packet: DisconnectdPacket}
+			msgPool.queue <- msg
+			timer.Stop()
+			return
+		case _, ok := <-c.closed:
+			if !ok {
+				return
+			}
+		}
+	}
+}
+
+func (c *client) readLoop() {
 	nc := c.conn
+	msgPool := c.mp
 	if nc == nil || msgPool == nil {
 		return
 	}
-	msg := &Message{}
+
+	ch := make(chan int, 1000)
+	go c.keepAlive(ch)
+
 	for {
-		buf, err := ReadPacket(nc)
+		packet, err := packets.ReadPacket(nc)
 		if err != nil {
-			log.Error("read packet error: ", err)
-			c.Close()
-			return
+			log.Error("read packet error: ", err, " clientID = ", c.info.clientID)
+			break
+		}
+
+		ch <- 1
+
+		msg := &Message{
+			client: c,
+			packet: packet,
 		}
-		msg.client = c
-		msg.msg = buf
 		msgPool.queue <- msg
 	}
+	msg := &Message{client: c, packet: DisconnectdPacket}
+	msgPool.queue <- msg
 	msgPool.Reduce()
 }
 
 func ProcessMessage(msg *Message) {
-	buf := msg.msg
 	c := msg.client
-	if c == nil || buf == nil {
+	ca := msg.packet
+	if ca == nil {
 		return
 	}
-	msgType := uint8(buf[0] & 0xF0 >> 4)
-	switch msgType {
-	case CONNACK:
-		// log.Info("Recv conack message..........")
-		c.ProcessConnAck(buf)
-	case CONNECT:
-		// log.Info("Recv connect message..........")
-		c.ProcessConnect(buf)
-	case PUBLISH:
-		// log.Info("Recv publish message..........")
-		c.ProcessPublish(buf)
-	case PUBACK:
-		//log.Info("Recv publish  ack message..........")
-		c.ProcessPubAck(buf)
-	case PUBCOMP:
-		//log.Info("Recv publish  ack message..........")
-		c.ProcessPubComp(buf)
-	case PUBREC:
-		//log.Info("Recv publish rec message..........")
-		c.ProcessPubREC(buf)
-	case PUBREL:
-		//log.Info("Recv publish rel message..........")
-		c.ProcessPubREL(buf)
-	case SUBSCRIBE:
-		// log.Info("Recv subscribe message.....")
-		c.ProcessSubscribe(buf)
-	case SUBACK:
-		// log.Info("Recv suback message.....")
-	case UNSUBSCRIBE:
-		// log.Info("Recv unsubscribe message.....")
-		c.ProcessUnSubscribe(buf)
-	case UNSUBACK:
-		//log.Info("Recv unsuback message.....")
-	case PINGREQ:
-		// log.Info("Recv PINGREQ message..........")
-		c.ProcessPing(buf)
-	case PINGRESP:
-		//log.Info("Recv PINGRESP message..........")
-	case DISCONNECT:
-		// log.Info("Recv DISCONNECT message.......")
+	log.Debug("Recv message: ", ca.String(), " clientID = ", c.info.clientID)
+	switch ca.(type) {
+	case *packets.ConnackPacket:
+
+	case *packets.ConnectPacket:
+	case *packets.PublishPacket:
+		packet := ca.(*packets.PublishPacket)
+		c.ProcessPublish(packet)
+	case *packets.PubackPacket:
+	case *packets.PubrecPacket:
+	case *packets.PubrelPacket:
+	case *packets.PubcompPacket:
+	case *packets.SubscribePacket:
+		packet := ca.(*packets.SubscribePacket)
+		c.ProcessSubscribe(packet)
+	case *packets.SubackPacket:
+	case *packets.UnsubscribePacket:
+		packet := ca.(*packets.UnsubscribePacket)
+		c.ProcessUnSubscribe(packet)
+	case *packets.UnsubackPacket:
+	case *packets.PingreqPacket:
+		c.ProcessPing()
+	case *packets.PingrespPacket:
+	case *packets.DisconnectPacket:
 		c.Close()
 	default:
-		log.Info("Recv Unknow message.......")
+		log.Info("Recv Unknow message.......", " clientID = ", c.info.clientID)
 	}
 }
 
-func (c *client) ProcessConnect(buf []byte) {
-
-}
-
-func (c *client) ProcessConnAck(buf []byte) {
-
-}
-
-func (c *client) ProcessPublish(buf []byte) {
-	msg, err := DecodePublishMessage(buf)
-	if err != nil {
-		log.Error("Decode Publish Message error: ", err)
-		c.Close()
+func (c *client) ProcessPublish(packet *packets.PublishPacket) {
+	if c.status == Disconnected {
 		return
 	}
-	topic := msg.Topic()
 
-	if c.typ != CLIENT || !c.CheckTopicAuth(PUB, string(topic)) {
+	topic := packet.TopicName
+	if topic == BrokerInfoTopic && c.typ != CLIENT {
+		c.ProcessInfo(packet)
 		return
 	}
-	c.ProcessPublishMessage(buf, msg)
 
-	if msg.Retain() {
+	if !c.CheckTopicAuth(PUB, topic) {
+		log.Error("Pub Topics Auth failed, ", topic, " clientID = ", c.info.clientID)
+		return
+	}
+
+	switch packet.Qos {
+	case QosAtMostOnce:
+		c.ProcessPublishMessage(packet)
+	case QosAtLeastOnce:
+		puback := packets.NewControlPacket(packets.Puback).(*packets.PubackPacket)
+		puback.MessageID = packet.MessageID
+		if err := c.WriterPacket(puback); err != nil {
+			log.Error("send puback error, ", err, " clientID = ", c.info.clientID)
+			return
+		}
+		c.ProcessPublishMessage(packet)
+	case QosExactlyOnce:
+		return
+	default:
+		log.Error("publish with unknown qos", " clientID = ", c.info.clientID)
+		return
+	}
+	if packet.Retain {
 		if b := c.broker; b != nil {
-			err := b.rl.Insert(topic, buf)
+			err := b.rl.Insert(topic, packet)
 			if err != nil {
-				log.Error("Insert Retain Message error: ", err)
+				log.Error("Insert Retain Message error: ", err, " clientID = ", c.info.clientID)
 			}
 		}
 	}
 
 }
 
-func (c *client) ProcessPublishMessage(buf []byte, msg *message.PublishMessage) {
+func (c *client) ProcessPublishMessage(packet *packets.PublishPacket) {
+	if c.status == Disconnected {
+		return
+	}
 
 	b := c.broker
 	if b == nil {
 		return
 	}
 	typ := c.typ
-	topic := string(msg.Topic())
+	topic := packet.TopicName
 
 	r := b.sl.Match(topic)
 	// log.Info("psubs num: ", len(r.psubs))
@@ -180,221 +237,263 @@ func (c *client) ProcessPublishMessage(buf []byte, msg *message.PublishMessage)
 	}
 
 	for _, sub := range r.psubs {
-		if sub.client.typ == ROUTER {
-			if typ == ROUTER {
+		if sub.client.typ == REMOTE {
+			if typ == REMOTE {
 				continue
 			}
 		}
 		if sub != nil {
-			err := sub.client.writeBuffer(buf)
+			err := sub.client.WriterPacket(packet)
 			if err != nil {
-				log.Error("process message for psub error,  ", err)
+				log.Error("process message for psub error,  ", err, " clientID = ", c.info.clientID)
 			}
 		}
 	}
 
-	for i, sub := range r.qsubs {
-		if sub.client.typ == ROUTER {
-			if typ == ROUTER {
-				continue
-			}
-		}
-		// s.qmu.Lock()
-		if cnt, exist := b.queues[string(sub.topic)]; exist && i == cnt {
-			if sub != nil {
-				err := sub.client.writeBuffer(buf)
-				if err != nil {
-					log.Error("process will message for qsub error,  ", err)
+	pre := -1
+	now := -1
+	t := "$queue/" + topic
+	cnt, exist := b.queues[t]
+	if exist {
+		// log.Info("queue index : ", cnt)
+		for _, sub := range r.qsubs {
+			if sub.client.typ == REMOTE {
+				if c.typ == REMOTE {
+					continue
 				}
 			}
-			b.queues[topic] = (b.queues[topic] + 1) % len(r.qsubs)
-			break
+			if c.typ == CLIENT {
+				now = now + 1
+			} else {
+				now = now + sub.client.rsubs[t].num
+			}
+			if cnt > pre && cnt <= now {
+				if sub != nil {
+					err := sub.client.WriterPacket(packet)
+					if err != nil {
+						log.Error("send publish error, ", err, " clientID = ", c.info.clientID)
+					}
+				}
+
+				break
+			}
+			pre = now
 		}
-		// s.qmu.Unlock()
+	}
+
+	length := getQueueSubscribeNum(r.qsubs)
+	if length > 0 {
+		b.queues[t] = (b.queues[t] + 1) % length
 	}
 }
 
-func (c *client) ProcessPubAck(buf []byte) {
-
+func getQueueSubscribeNum(qsubs []*subscription) int {
+	topic := "$queue/"
+	if len(qsubs) < 1 {
+		return 0
+	} else {
+		topic = topic + qsubs[0].topic
+	}
+	num := 0
+	for _, sub := range qsubs {
+		if sub.client.typ == CLIENT {
+			num = num + 1
+		} else {
+			num = num + sub.client.rsubs[topic].num
+		}
+	}
+	return num
 }
 
-func (c *client) ProcessPubREC(buf []byte) {
+func (c *client) ProcessSubscribe(packet *packets.SubscribePacket) {
+	if c.status == Disconnected {
+		return
+	}
 
-}
-
-func (c *client) ProcessPubREL(buf []byte) {
-
-}
-
-func (c *client) ProcessPubComp(buf []byte) {
-
-}
-
-func (c *client) ProcessSubscribe(buf []byte) {
 	b := c.broker
 	if b == nil {
 		return
 	}
-	msg, err := DecodeSubscribeMessage(buf)
-	if err != nil {
-		log.Error("Decode Subscribe Message error: ", err)
-		c.Close()
-		return
-	}
-	topics := msg.Topics()
-	qos := msg.Qos()
+	topics := packet.Topics
+	qoss := packet.Qoss
 
-	suback := message.NewSubackMessage()
-	suback.SetPacketId(msg.PacketId())
+	suback := packets.NewControlPacket(packets.Suback).(*packets.SubackPacket)
+	suback.MessageID = packet.MessageID
 	var retcodes []byte
 
-	for i, t := range topics {
-		topic := string(t)
+	for i, topic := range topics {
+		t := topic
 		//check topic auth for client
-		if c.typ == CLIENT {
-			if !c.CheckTopicAuth(SUB, topic) {
-				log.Error("CheckSubAuth failed")
-				retcodes = append(retcodes, message.QosFailure)
+		if !c.CheckTopicAuth(SUB, topic) {
+			log.Error("Sub topic Auth failed: ", topic, " clientID = ", c.info.clientID)
+			retcodes = append(retcodes, QosFailure)
+			continue
+		}
+
+		queue := strings.HasPrefix(topic, "$queue/")
+		if queue {
+			if len(t) > 7 {
+				t = t[7:]
+				if _, exists := b.queues[topic]; !exists {
+					b.queues[topic] = 0
+				}
+			} else {
+				retcodes = append(retcodes, QosFailure)
 				continue
 			}
 		}
-		if _, exist := c.subs[topic]; !exist {
-			queue := false
-			if strings.HasPrefix(topic, "$queue/") {
-				if len(t) > 7 {
-					t = t[7:]
-					queue = true
-					// b.qmu.Lock()
-					if _, exists := b.queues[topic]; !exists {
-						b.queues[topic] = 0
-					}
-					// b.qmu.Unlock()
-				} else {
-					retcodes = append(retcodes, message.QosFailure)
-					continue
-				}
-			}
-			sub := &subscription{
-				topic:  t,
-				qos:    qos[i],
-				client: c,
-				queue:  queue,
-			}
-
-			c.mu.Lock()
-			c.subs[topic] = sub
-			c.mu.Unlock()
-
-			err := b.sl.Insert(sub)
-			if err != nil {
-				log.Error("Insert subscription error: ", err)
-				retcodes = append(retcodes, message.QosFailure)
-			}
-			retcodes = append(retcodes, qos[i])
-		} else {
-			//if exist ,check whether qos change
-			c.subs[topic].qos = qos[i]
-			retcodes = append(retcodes, qos[i])
+		sub := &subscription{
+			topic:  t,
+			qos:    qoss[i],
+			client: c,
+			queue:  queue,
 		}
+		switch c.typ {
+		case CLIENT:
+			if _, exist := c.subs[topic]; !exist {
+				c.subs[topic] = sub
 
+			} else {
+				//if exist ,check whether qos change
+				c.subs[topic].qos = qoss[i]
+				retcodes = append(retcodes, qoss[i])
+				continue
+			}
+		case REMOTE:
+			if subinfo, exist := c.rsubs[topic]; !exist {
+				sinfo := &subInfo{sub: sub, num: 1}
+				c.rsubs[topic] = sinfo
+
+			} else {
+				subinfo.num = subinfo.num + 1
+				retcodes = append(retcodes, qoss[i])
+				continue
+			}
+		}
+		err := b.sl.Insert(sub)
+		if err != nil {
+			log.Error("Insert subscription error: ", err, " clientID = ", c.info.clientID)
+			retcodes = append(retcodes, QosFailure)
+		} else {
+			retcodes = append(retcodes, qoss[i])
+		}
 	}
+	suback.ReturnCodes = retcodes
 
-	if err := suback.AddReturnCodes(retcodes); err != nil {
-		log.Error("add return suback code error, ", err)
-		// if typ == CLIENT {
-		c.Close()
-		// }
-		return
-	}
-
-	err1 := c.writeMessage(suback)
-	if err1 != nil {
-		log.Error("send suback error, ", err1)
+	err := c.WriterPacket(suback)
+	if err != nil {
+		log.Error("send suback error, ", err, " clientID = ", c.info.clientID)
 		return
 	}
 	//broadcast subscribe message
 	if c.typ == CLIENT {
-		go b.BroadcastSubOrUnsubMessage(buf)
+		go b.BroadcastSubOrUnsubMessage(packet)
 	}
 
 	//process retain message
 	for _, t := range topics {
-		bufs := b.rl.Match(t)
-		for _, buf := range bufs {
-			log.Info("process retain  message: ", string(buf))
-			if buf != nil && string(buf) != "" {
-				c.writeBuffer(buf)
+		packets := b.rl.Match(t)
+		for _, packet := range packets {
+			log.Info("process retain  message: ", packet, " clientID = ", c.info.clientID)
+			if packet != nil {
+				c.WriterPacket(packet)
 			}
 		}
 	}
 }
 
-func (c *client) ProcessUnSubscribe(buf []byte) {
+func (c *client) ProcessUnSubscribe(packet *packets.UnsubscribePacket) {
+	if c.status == Disconnected {
+		return
+	}
 	b := c.broker
 	if b == nil {
 		return
 	}
-
-	unsub, err := DecodeUnsubscribeMessage(buf)
-	if err != nil {
-		log.Error("Decode UnSubscribe Message error: ", err)
-		c.Close()
-		return
-	}
-	topics := unsub.Topics()
+	typ := c.typ
+	topics := packet.Topics
 
 	for _, t := range topics {
-		var sub *subscription
-		ok := false
 
-		if sub, ok = c.subs[string(t)]; ok {
-			go c.unsubscribe(sub)
+		switch typ {
+		case CLIENT:
+			sub, ok := c.subs[t]
+			if ok {
+				c.unsubscribe(sub)
+			}
+		case REMOTE:
+			subinfo, ok := c.rsubs[t]
+			if ok {
+				subinfo.num = subinfo.num - 1
+				if subinfo.num < 1 {
+					delete(c.rsubs, t)
+					c.unsubscribe(subinfo.sub)
+				} else {
+					c.rsubs[t] = subinfo
+				}
+			}
 		}
 
 	}
 
-	resp := message.NewUnsubackMessage()
-	resp.SetPacketId(unsub.PacketId())
+	unsuback := packets.NewControlPacket(packets.Unsuback).(*packets.UnsubackPacket)
+	unsuback.MessageID = packet.MessageID
 
-	err1 := c.writeMessage(resp)
-	if err1 != nil {
-		log.Error("send ubsuback error, ", err1)
+	err := c.WriterPacket(unsuback)
+	if err != nil {
+		log.Error("send unsuback error, ", err, " clientID = ", c.info.clientID)
 		return
 	}
 	// //process ubsubscribe message
 	if c.typ == CLIENT {
-		b.BroadcastSubOrUnsubMessage(buf)
+		b.BroadcastSubOrUnsubMessage(packet)
 	}
 }
 
 func (c *client) unsubscribe(sub *subscription) {
 
-	c.mu.Lock()
-	delete(c.subs, string(sub.topic))
-	c.mu.Unlock()
+	if c.typ == CLIENT {
+		delete(c.subs, sub.topic)
 
-	if c.broker != nil {
-		c.broker.sl.Remove(sub)
 	}
+	b := c.broker
+	if b != nil && sub != nil {
+		b.sl.Remove(sub)
+	}
+
 }
 
-func (c *client) ProcessPing(buf []byte) {
-	_, err := DecodePingreqMessage(buf)
-	if err != nil {
-		log.Error("Decode PingRequest Message error: ", err)
-		c.Close()
+func (c *client) ProcessPing() {
+	if c.status == Disconnected {
 		return
 	}
-
-	pingRspMsg := message.NewPingrespMessage()
-	err = c.writeMessage(pingRspMsg)
+	resp := packets.NewControlPacket(packets.Pingresp).(*packets.PingrespPacket)
+	err := c.WriterPacket(resp)
 	if err != nil {
-		log.Error("send PingResponse error, ", err)
+		log.Error("send PingResponse error, ", err, " clientID = ", c.info.clientID)
 		return
 	}
 }
 
 func (c *client) Close() {
+	c.smu.Lock()
+	if c.status == Disconnected {
+		c.smu.Unlock()
+		return
+	}
+	//wait for message complete
+	time.Sleep(1 * time.Second)
+	c.status = Disconnected
+
+	if c.conn != nil {
+		c.conn.Close()
+		c.conn = nil
+	}
+
+	c.smu.Unlock()
+
+	close(c.closed)
+
 	b := c.broker
 	subs := c.subs
 	if b != nil {
@@ -402,37 +501,33 @@ func (c *client) Close() {
 		for _, sub := range subs {
 			err := b.sl.Remove(sub)
 			if err != nil {
-				log.Error("closed client but remove sublist error, ", err)
+				log.Error("closed client but remove sublist error, ", err, " clientID = ", c.info.clientID)
 			}
 		}
-		if c.info.willMsg != nil {
-			b.ProcessPublishMessage(c.info.willMsg)
+		if c.typ == CLIENT {
+			b.BroadcastUnSubscribe(subs)
+		}
+		if c.info.willMsg != nil {
+			b.PublishMessage(c.info.willMsg)
+		}
+
+		//do reconnect
+		if c.typ == REMOTE {
+			localUrl := c.info.localIP + ":" + c.broker.config.Cluster.Port
+			if c.route.remoteUrl != localUrl {
+				b.connectRouter(c.route.remoteUrl, "")
+			}
 		}
-	}
-	if c.conn != nil {
-		c.conn.Close()
-		c.conn = nil
 	}
 }
 
-func WriteBuffer(conn net.Conn, buf []byte) error {
-	if conn == nil {
-		return errors.New("conn is nul")
+func (c *client) WriterPacket(packet packets.ControlPacket) error {
+	if packet == nil {
+		return nil
 	}
-	_, err := conn.Write(buf)
-	return err
-}
-func (c *client) writeBuffer(buf []byte) error {
+
 	c.mu.Lock()
-	err := WriteBuffer(c.conn, buf)
+	err := packet.Write(c.conn)
 	c.mu.Unlock()
 	return err
 }
-
-func (c *client) writeMessage(msg message.Message) error {
-	buf, err := EncodeMessage(msg)
-	if err != nil {
-		return err
-	}
-	return c.writeBuffer(buf)
-}

broker/clientmap.go

@@ -1,73 +0,0 @@
-package broker
-
-import "sync"
-
-type cMap interface {
-	Set(key string, val *client)
-	Get(key string) (*client, bool)
-	Items() map[string]*client
-	Exist(key string) bool
-	Update(key string, val *client) (*client, bool)
-	Count() int
-	Remove(key string)
-}
-
-type clientMap struct {
-	items map[string]*client
-	mu    sync.RWMutex
-}
-
-func NewClientMap() cMap {
-	smap := &clientMap{
-		items: make(map[string]*client),
-	}
-	return smap
-}
-
-func (s *clientMap) Set(key string, val *client) {
-	s.mu.Lock()
-	s.items[key] = val
-	s.mu.Unlock()
-}
-
-func (s *clientMap) Get(key string) (*client, bool) {
-	s.mu.RLock()
-	val, ok := s.items[key]
-	s.mu.RUnlock()
-	return val, ok
-}
-
-func (s *clientMap) Exist(key string) bool {
-	s.mu.RLock()
-	_, ok := s.items[key]
-	s.mu.RUnlock()
-	return ok
-}
-
-func (s *clientMap) Update(key string, val *client) (*client, bool) {
-	s.mu.Lock()
-	old, ok := s.items[key]
-	s.items[key] = val
-	s.mu.Unlock()
-	return old, ok
-}
-
-func (s *clientMap) Count() int {
-	s.mu.RLock()
-	len := len(s.items)
-	s.mu.RUnlock()
-	return len
-}
-
-func (s *clientMap) Remove(key string) {
-	s.mu.Lock()
-	delete(s.items, key)
-	s.mu.Unlock()
-}
-
-func (s *clientMap) Items() map[string]*client {
-	s.mu.RLock()
-	items := s.items
-	s.mu.RUnlock()
-	return items
-}

broker/comm.go

@@ -1,7 +1,6 @@
 package broker
 
 import (
-	"bytes"
 	"crypto/md5"
 	"crypto/rand"
 	"encoding/base64"
@@ -40,17 +39,17 @@ const (
 	PINGRESP
 	DISCONNECT
 )
+const (
+	QosAtMostOnce byte = iota
+	QosAtLeastOnce
+	QosExactlyOnce
+	QosFailure = 0x80
+)
 
-func SubscribeTopicCheckAndSpilt(subject []byte) ([]string, error) {
-
-	topic := string(subject)
-
-	if bytes.IndexByte(subject, '#') != -1 {
-		if bytes.IndexByte(subject, '#') != len(subject)-1 {
-			return nil, errors.New("Topic format error with index of #")
-		}
+func SubscribeTopicCheckAndSpilt(topic string) ([]string, error) {
+	if strings.Index(topic, "#") != -1 && strings.Index(topic, "#") != len(topic)-1 {
+		return nil, errors.New("Topic format error with index of #")
 	}
-
 	re := strings.Split(topic, "/")
 	for i, v := range re {
 		if i != 0 && i != (len(re)-1) {
@@ -70,11 +69,10 @@ func SubscribeTopicCheckAndSpilt(subject []byte) ([]string, error) {
 
 }
 
-func PublishTopicCheckAndSpilt(subject []byte) ([]string, error) {
-	if bytes.IndexByte(subject, '#') != -1 || bytes.IndexByte(subject, '+') != -1 {
+func PublishTopicCheckAndSpilt(topic string) ([]string, error) {
+	if strings.Index(topic, "#") != -1 || strings.Index(topic, "+") != -1 {
 		return nil, errors.New("Publish Topic format error with + and #")
 	}
-	topic := string(subject)
 	re := strings.Split(topic, "/")
 	for i, v := range re {
 		if v == "" {

broker/config.go

@@ -11,10 +11,11 @@ import (
 )
 
 const (
-	CONFIGFILE = "broker.config"
+	CONFIGFILE = "conf/hmq.config"
 )
 
 type Config struct {
+	Worker  int       `json:"workerNum"`
 	Host    string    `json:"host"`
 	Port    string    `json:"port"`
 	Cluster RouteInfo `json:"cluster"`
@@ -57,6 +58,12 @@ func LoadConfig() (*Config, error) {
 		return nil, err
 	}
 
+	if config.Worker == 0 {
+		config.Worker = 1024
+	}
+
+	WorkNum = config.Worker
+
 	if config.Port != "" {
 		if config.Host == "" {
 			config.Host = "0.0.0.0"

broker/dispatcher.go

@@ -1,14 +1,12 @@
 package broker
 
-const (
-	WorkNum = 2048
-)
+var WorkNum int
 
 type Dispatcher struct {
 	WorkerPool chan chan *Message
 }
 
-func init() {
+func StartDispatcher() {
 	InitMessagePool()
 	dispatcher := NewDispatcher()
 	dispatcher.Run()
@@ -29,7 +27,7 @@ func NewDispatcher() *Dispatcher {
 }
 
 func (d *Dispatcher) dispatch() {
-	for i := 0; i < MessagePoolNum; i++ {
+	for i := 0; i < (MessagePoolNum + 2); i++ {
 		go func(idx int) {
 			for {
 				select {

broker/info.go

@@ -2,34 +2,42 @@ package broker
 
 import (
 	"fmt"
-	"hmq/lib/message"
 	"time"
 
+	"github.com/eclipse/paho.mqtt.golang/packets"
+
 	simplejson "github.com/bitly/go-simplejson"
 	log "github.com/cihub/seelog"
 )
 
 func (c *client) SendInfo() {
+	if c.status == Disconnected {
+		return
+	}
 	url := c.info.localIP + ":" + c.broker.config.Cluster.Port
 
 	infoMsg := NewInfo(c.broker.id, url, false)
-	err := c.writeMessage(infoMsg)
+	err := c.WriterPacket(infoMsg)
 	if err != nil {
 		log.Error("send info message error, ", err)
 		return
 	}
-	// log.Info("send info success")
 }
 
 func (c *client) StartPing() {
 	timeTicker := time.NewTicker(time.Second * 30)
-	ping := message.NewPingreqMessage()
+	ping := packets.NewControlPacket(packets.Pingreq).(*packets.PingreqPacket)
 	for {
 		select {
 		case <-timeTicker.C:
-			err := c.writeMessage(ping)
+			err := c.WriterPacket(ping)
 			if err != nil {
 				log.Error("ping error: ", err)
+				c.Close()
+			}
+		case _, ok := <-c.closed:
+			if !ok {
+				return
 			}
 		}
 	}
@@ -37,39 +45,43 @@ func (c *client) StartPing() {
 
 func (c *client) SendConnect() {
 
-	clientID := c.info.clientID
-	connMsg := message.NewConnectMessage()
-	connMsg.SetClientId(clientID)
-	connMsg.SetVersion(0x04)
-	err := c.writeMessage(connMsg)
+	if c.status != Connected {
+		return
+	}
+	m := packets.NewControlPacket(packets.Connect).(*packets.ConnectPacket)
+
+	m.CleanSession = true
+	m.ClientIdentifier = c.info.clientID
+	m.Keepalive = uint16(60)
+	err := c.WriterPacket(m)
 	if err != nil {
 		log.Error("send connect message error, ", err)
 		return
 	}
-	// log.Info("send connet success")
+	log.Info("send connect success")
 }
 
-func NewInfo(sid, url string, isforword bool) *message.PublishMessage {
-	infoMsg := message.NewPublishMessage()
-	infoMsg.SetTopic([]byte(BrokerInfoTopic))
+func NewInfo(sid, url string, isforword bool) *packets.PublishPacket {
+	pub := packets.NewControlPacket(packets.Publish).(*packets.PublishPacket)
+	pub.Qos = 0
+	pub.TopicName = BrokerInfoTopic
+	pub.Retain = false
 	info := fmt.Sprintf(`{"remoteID":"%s","url":"%s","isForward":%t}`, sid, url, isforword)
 	// log.Info("new info", string(info))
-	infoMsg.SetPayload([]byte(info))
-	infoMsg.SetQoS(0)
-	infoMsg.SetRetain(false)
-	return infoMsg
+	pub.Payload = []byte(info)
+	return pub
 }
 
-func (c *client) ProcessInfo(msg *message.PublishMessage) {
+func (c *client) ProcessInfo(packet *packets.PublishPacket) {
 	nc := c.conn
 	b := c.broker
 	if nc == nil {
 		return
 	}
 
-	log.Info("recv remoteInfo: ", string(msg.Payload()))
+	log.Info("recv remoteInfo: ", string(packet.Payload))
 
-	js, e := simplejson.NewJson(msg.Payload())
+	js, e := simplejson.NewJson(packet.Payload)
 	if e != nil {
 		log.Warn("parse info message err", e)
 		return
@@ -91,17 +103,21 @@ func (c *client) ProcessInfo(msg *message.PublishMessage) {
 		return
 	}
 
+	b.mu.Lock()
 	exist := b.CheckRemoteExist(rid, rurl)
 	if !exist {
-		go b.connectRouter(rurl, rid)
+		b.connectRouter(rurl, rid)
 	}
-	// log.Info("isforword: ", isForward)
+	b.mu.Unlock()
+
 	if !isForward {
-		route := &route{
-			remoteUrl: rurl,
-			remoteID:  rid,
+		if c.typ == ROUTER {
+			route := route{
+				remoteUrl: rurl,
+				remoteID:  rid,
+			}
+			c.route = route
 		}
-		c.route = route
 
 		go b.SendLocalSubsToRouter(c)
 		// log.Info("BroadcastInfoMessage starting... ")

broker/msgpool.go

@@ -1,6 +1,10 @@
 package broker
 
-import "sync"
+import (
+	"sync"
+
+	"github.com/eclipse/paho.mqtt.golang/packets"
+)
 
 const (
 	MaxUser               = 1024 * 1024
@@ -11,7 +15,7 @@ const (
 
 type Message struct {
 	client *client
-	msg    []byte
+	packet packets.ControlPacket
 }
 
 var (

broker/packet.go

@@ -1,236 +0,0 @@
-package broker
-
-import (
-	"errors"
-	"hmq/lib/message"
-	"io"
-	"net"
-
-	log "github.com/cihub/seelog"
-)
-
-func checkError(desc string, err error) {
-	if err != nil {
-		log.Error(desc, " : ", err)
-	}
-}
-
-func ReadPacket(conn net.Conn) ([]byte, error) {
-	if conn == nil {
-		return nil, errors.New("conn is null")
-	}
-	// conn.SetReadDeadline(t)
-	var buf []byte
-	// read fix header
-	b := make([]byte, 1)
-	_, err := io.ReadFull(conn, b)
-	if err != nil {
-		return nil, err
-	}
-	buf = append(buf, b...)
-	// read rem msg length
-	rembuf, remlen := decodeLength(conn)
-	buf = append(buf, rembuf...)
-	// read rem msg
-	packetBytes := make([]byte, remlen)
-	_, err = io.ReadFull(conn, packetBytes)
-	if err != nil {
-		return nil, err
-	}
-	buf = append(buf, packetBytes...)
-	// log.Info("len buf: ", len(buf))
-	return buf, nil
-}
-
-func decodeLength(r io.Reader) ([]byte, int) {
-	var rLength uint32
-	var multiplier uint32
-	var buf []byte
-	b := make([]byte, 1)
-	for {
-		io.ReadFull(r, b)
-		digit := b[0]
-		buf = append(buf, b[0])
-		rLength |= uint32(digit&127) << multiplier
-		if (digit & 128) == 0 {
-			break
-		}
-		multiplier += 7
-
-	}
-	return buf, int(rLength)
-}
-
-func DecodeMessage(buf []byte) (message.Message, error) {
-	msgType := uint8(buf[0] & 0xF0 >> 4)
-	switch msgType {
-	case CONNECT:
-		return DecodeConnectMessage(buf)
-	case CONNACK:
-		return DecodeConnackMessage(buf)
-	case PUBLISH:
-		return DecodePublishMessage(buf)
-	case PUBACK:
-		return DecodePubackMessage(buf)
-	case PUBCOMP:
-		return DecodePubcompMessage(buf)
-	case PUBREC:
-		return DecodePubrecMessage(buf)
-	case PUBREL:
-		return DecodePubrelMessage(buf)
-	case SUBSCRIBE:
-		return DecodeSubscribeMessage(buf)
-	case SUBACK:
-		return DecodeSubackMessage(buf)
-	case UNSUBSCRIBE:
-		return DecodeUnsubscribeMessage(buf)
-	case UNSUBACK:
-		return DecodeUnsubackMessage(buf)
-	case PINGREQ:
-		return DecodePingreqMessage(buf)
-	case PINGRESP:
-		return DecodePingrespMessage(buf)
-	case DISCONNECT:
-		return DecodeDisconnectMessage(buf)
-	default:
-		return nil, errors.New("error message type")
-	}
-}
-
-func DecodeConnectMessage(buf []byte) (*message.ConnectMessage, error) {
-	connMsg := message.NewConnectMessage()
-	_, err := connMsg.Decode(buf)
-	if err != nil {
-		if !message.ValidConnackError(err) {
-			return nil, errors.New("Connect message format error, " + err.Error())
-		}
-		return nil, errors.New("Deode connect message error, " + err.Error())
-	}
-	return connMsg, nil
-}
-
-func DecodeConnackMessage(buf []byte) (*message.ConnackMessage, error) {
-	msg := message.NewConnackMessage()
-	_, err := msg.Decode(buf)
-	if err != nil {
-		return nil, errors.New("Decode Connack message error, " + err.Error())
-	}
-	return msg, nil
-}
-
-func DecodePublishMessage(buf []byte) (*message.PublishMessage, error) {
-	msg := message.NewPublishMessage()
-	_, err := msg.Decode(buf)
-	if err != nil {
-		return nil, errors.New("Decode Publish message error, " + err.Error())
-	}
-	return msg, nil
-}
-
-func DecodePubackMessage(buf []byte) (*message.PubackMessage, error) {
-	msg := message.NewPubackMessage()
-	_, err := msg.Decode(buf)
-	if err != nil {
-		return nil, errors.New("Decode Puback message error, " + err.Error())
-	}
-	return msg, nil
-}
-
-func DecodePubrecMessage(buf []byte) (*message.PubrecMessage, error) {
-	msg := message.NewPubrecMessage()
-	_, err := msg.Decode(buf)
-	if err != nil {
-		return nil, errors.New("Decode Pubrec message error, " + err.Error())
-	}
-	return msg, nil
-}
-
-func DecodePubrelMessage(buf []byte) (*message.PubrelMessage, error) {
-	msg := message.NewPubrelMessage()
-	_, err := msg.Decode(buf)
-	if err != nil {
-		return nil, errors.New("Decode Pubrel message error, " + err.Error())
-	}
-	return msg, nil
-}
-
-func DecodePubcompMessage(buf []byte) (*message.PubcompMessage, error) {
-	msg := message.NewPubcompMessage()
-	_, err := msg.Decode(buf)
-	if err != nil {
-		return nil, errors.New("Decode Pubcomp message error, " + err.Error())
-	}
-	return msg, nil
-}
-
-func DecodeSubscribeMessage(buf []byte) (*message.SubscribeMessage, error) {
-	msg := message.NewSubscribeMessage()
-	_, err := msg.Decode(buf)
-	if err != nil {
-		return nil, errors.New("Decode Subscribe message error, " + err.Error())
-	}
-	return msg, nil
-}
-
-func DecodeSubackMessage(buf []byte) (*message.SubackMessage, error) {
-	msg := message.NewSubackMessage()
-	_, err := msg.Decode(buf)
-	if err != nil {
-		return nil, errors.New("Decode Suback message error, " + err.Error())
-	}
-	return msg, nil
-}
-
-func DecodeUnsubscribeMessage(buf []byte) (*message.UnsubscribeMessage, error) {
-	msg := message.NewUnsubscribeMessage()
-	_, err := msg.Decode(buf)
-	if err != nil {
-		return nil, errors.New("Decode Unsubscribe message error, " + err.Error())
-	}
-	return msg, nil
-}
-
-func DecodeUnsubackMessage(buf []byte) (*message.UnsubackMessage, error) {
-	msg := message.NewUnsubackMessage()
-	_, err := msg.Decode(buf)
-	if err != nil {
-		return nil, errors.New("Decode Unsuback message error, " + err.Error())
-	}
-	return msg, nil
-}
-
-func DecodePingreqMessage(buf []byte) (*message.PingreqMessage, error) {
-	msg := message.NewPingreqMessage()
-	_, err := msg.Decode(buf)
-	if err != nil {
-		return nil, errors.New("Decode Pingreq message error, " + err.Error())
-	}
-	return msg, nil
-}
-
-func DecodePingrespMessage(buf []byte) (*message.PingrespMessage, error) {
-	msg := message.NewPingrespMessage()
-	_, err := msg.Decode(buf)
-	if err != nil {
-		return nil, errors.New("Decode Pingresp message error, " + err.Error())
-	}
-	return msg, nil
-}
-
-func DecodeDisconnectMessage(buf []byte) (*message.DisconnectMessage, error) {
-	msg := message.NewDisconnectMessage()
-	_, err := msg.Decode(buf)
-	if err != nil {
-		return nil, errors.New("Decode Disconnect message error, " + err.Error())
-	}
-	return msg, nil
-}
-
-func EncodeMessage(msg message.Message) ([]byte, error) {
-	buf := make([]byte, msg.Len())
-	_, err := msg.Encode(buf)
-	if err != nil {
-		return nil, err
-	}
-	return buf, nil
-}

broker/retain.go

@@ -2,6 +2,8 @@ package broker
 
 import (
 	"sync"
+
+	"github.com/eclipse/paho.mqtt.golang/packets"
 )
 
 type RetainList struct {
@@ -13,14 +15,14 @@ type rlevel struct {
 }
 type rnode struct {
 	next *rlevel
-	msg  []byte
+	msg  *packets.PublishPacket
 }
 type RetainResult struct {
-	msg [][]byte
+	msg []*packets.PublishPacket
 }
 
 func newRNode() *rnode {
-	return &rnode{msg: make([]byte, 0, 4)}
+	return &rnode{}
 }
 
 func newRLevel() *rlevel {
@@ -31,7 +33,7 @@ func NewRetainList() *RetainList {
 	return &RetainList{root: newRLevel()}
 }
 
-func (r *RetainList) Insert(topic, buf []byte) error {
+func (r *RetainList) Insert(topic string, buf *packets.PublishPacket) error {
 
 	tokens, err := PublishTopicCheckAndSpilt(topic)
 	if err != nil {
@@ -58,7 +60,7 @@ func (r *RetainList) Insert(topic, buf []byte) error {
 	return nil
 }
 
-func (r *RetainList) Match(topic []byte) [][]byte {
+func (r *RetainList) Match(topic string) []*packets.PublishPacket {
 
 	tokens, err := SubscribeTopicCheckAndSpilt(topic)
 	if err != nil {
@@ -110,7 +112,7 @@ func matchRLevel(l *rlevel, toks []string, results *RetainResult) {
 
 func (r *rnode) GetAll(results *RetainResult) {
 	// log.Info("node 's message: ", string(r.msg))
-	if r.msg != nil && string(r.msg) != "" {
+	if r.msg != nil {
 		results.msg = append(results.msg, r.msg)
 	}
 	l := r.next

broker/sublist.go

@@ -124,8 +124,8 @@ func (s *Sublist) removeFromCache(topic string, sub *subscription) {
 }
 
 func matchLiteral(literal, topic string) bool {
-	tok, _ := SubscribeTopicCheckAndSpilt([]byte(topic))
-	li, _ := PublishTopicCheckAndSpilt([]byte(literal))
+	tok, _ := SubscribeTopicCheckAndSpilt(topic)
+	li, _ := PublishTopicCheckAndSpilt(literal)
 
 	for i := 0; i < len(tok); i++ {
 		b := tok[i]
@@ -207,7 +207,7 @@ func (s *Sublist) Match(topic string) *SublistResult {
 		return rc
 	}
 
-	tokens, err := PublishTopicCheckAndSpilt([]byte(topic))
+	tokens, err := PublishTopicCheckAndSpilt(topic)
 	if err != nil {
 		log.Error("\tserver/sublist.go: ", err)
 		return nil
@@ -241,7 +241,6 @@ func (s *Sublist) Match(topic string) *SublistResult {
 	}
 
 	s.Unlock()
-	// log.Info("SublistResult: ", result)
 	return result
 }
 
@@ -294,7 +293,6 @@ func removeSubFromList(sub *subscription, sl []*subscription) ([]*subscription,
 			sl[i] = sl[last]
 			sl[last] = nil
 			sl = sl[:last]
-			// log.Info("removeSubFromList success")
 			return shrinkAsNeeded(sl), true
 		}
 	}

conf/hmq.config

@@ -1,4 +1,5 @@
 {
+	"workerNum": 4096,
 	"port": "1883",
 	"host": "0.0.0.0",
 	"cluster": {
@@ -17,6 +18,6 @@
 		"certFile": "ssl/server/cert.pem",
 		"keyFile": "ssl/server/key.pem"
 	},
-	"acl": true,
+	"acl": false,
 	"aclConf": "conf/acl.conf"
-}
+}

lib/message/AUTHORS

@@ -1,16 +0,0 @@
-# This is the official list of SurgeMQ authors for copyright purposes.
-
-# If you are submitting a patch, please add your name or the name of the
-# organization which holds the copyright to this list in alphabetical order.
-
-# Names should be added to this file as
-#	Name <email address>
-# The email address is not required for organizations.
-# Please keep the list sorted.
-
-
-# Individual Persons
-
-Jian Zhen <zhenjl@gmail.com>
-
-# Organizations

lib/message/CONTRIBUTING.md

@@ -1,36 +0,0 @@
-# Contributing Guidelines
-
-## Reporting Issues
-
-Before creating a new Issue, please check first if a similar Issue [already exists](https://github.com/surgemq/message/issues?state=open) or was [recently closed](https://github.com/surgemq/message/issues?direction=desc&page=1&sort=updated&state=closed).
-
-Please provide the following minimum information:
-* Your SurgeMQ version (or git SHA)
-* Your Go version (run `go version` in your console)
-* A detailed issue description
-* Error Log if present
-* If possible, a short example
-
-
-## Contributing Code
-
-By contributing to this project, you share your code under the Apache License, Version 2.0, as specified in the LICENSE file.
-Don't forget to add yourself to the AUTHORS file.
-
-### Pull Requests Checklist
-
-Please check the following points before submitting your pull request:
-- [x] Code compiles correctly
-- [x] Created tests, if possible
-- [x] All tests pass
-- [x] Extended the README / documentation, if necessary
-- [x] Added yourself to the AUTHORS file
-
-### Code Review
-
-Everyone is invited to review and comment on pull requests.
-If it looks fine to you, comment with "LGTM" (Looks good to me).
-
-If changes are required, notice the reviewers with "PTAL" (Please take another look) after committing the fixes.
-
-Before merging the Pull Request, at least one [team member](https://github.com/orgs/surgemq/people) must have commented with "LGTM".

lib/message/LICENSE

@@ -1,201 +0,0 @@
-Apache License
-                           Version 2.0, January 2004
-                        http://www.apache.org/licenses/
-
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
-   1. Definitions.
-
-      "License" shall mean the terms and conditions for use, reproduction,
-      and distribution as defined by Sections 1 through 9 of this document.
-
-      "Licensor" shall mean the copyright owner or entity authorized by
-      the copyright owner that is granting the License.
-
-      "Legal Entity" shall mean the union of the acting entity and all
-      other entities that control, are controlled by, or are under common
-      control with that entity. For the purposes of this definition,
-      "control" means (i) the power, direct or indirect, to cause the
-      direction or management of such entity, whether by contract or
-      otherwise, or (ii) ownership of fifty percent (50%) or more of the
-      outstanding shares, or (iii) beneficial ownership of such entity.
-
-      "You" (or "Your") shall mean an individual or Legal Entity
-      exercising permissions granted by this License.
-
-      "Source" form shall mean the preferred form for making modifications,
-      including but not limited to software source code, documentation
-      source, and configuration files.
-
-      "Object" form shall mean any form resulting from mechanical
-      transformation or translation of a Source form, including but
-      not limited to compiled object code, generated documentation,
-      and conversions to other media types.
-
-      "Work" shall mean the work of authorship, whether in Source or
-      Object form, made available under the License, as indicated by a
-      copyright notice that is included in or attached to the work
-      (an example is provided in the Appendix below).
-
-      "Derivative Works" shall mean any work, whether in Source or Object
-      form, that is based on (or derived from) the Work and for which the
-      editorial revisions, annotations, elaborations, or other modifications
-      represent, as a whole, an original work of authorship. For the purposes
-      of this License, Derivative Works shall not include works that remain
-      separable from, or merely link (or bind by name) to the interfaces of,
-      the Work and Derivative Works thereof.
-
-      "Contribution" shall mean any work of authorship, including
-      the original version of the Work and any modifications or additions
-      to that Work or Derivative Works thereof, that is intentionally
-      submitted to Licensor for inclusion in the Work by the copyright owner
-      or by an individual or Legal Entity authorized to submit on behalf of
-      the copyright owner. For the purposes of this definition, "submitted"
-      means any form of electronic, verbal, or written communication sent
-      to the Licensor or its representatives, including but not limited to
-      communication on electronic mailing lists, source code control systems,
-      and issue tracking systems that are managed by, or on behalf of, the
-      Licensor for the purpose of discussing and improving the Work, but
-      excluding communication that is conspicuously marked or otherwise
-      designated in writing by the copyright owner as "Not a Contribution."
-
-      "Contributor" shall mean Licensor and any individual or Legal Entity
-      on behalf of whom a Contribution has been received by Licensor and
-      subsequently incorporated within the Work.
-
-   2. Grant of Copyright License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      copyright license to reproduce, prepare Derivative Works of,
-      publicly display, publicly perform, sublicense, and distribute the
-      Work and such Derivative Works in Source or Object form.
-
-   3. Grant of Patent License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      (except as stated in this section) patent license to make, have made,
-      use, offer to sell, sell, import, and otherwise transfer the Work,
-      where such license applies only to those patent claims licensable
-      by such Contributor that are necessarily infringed by their
-      Contribution(s) alone or by combination of their Contribution(s)
-      with the Work to which such Contribution(s) was submitted. If You
-      institute patent litigation against any entity (including a
-      cross-claim or counterclaim in a lawsuit) alleging that the Work
-      or a Contribution incorporated within the Work constitutes direct
-      or contributory patent infringement, then any patent licenses
-      granted to You under this License for that Work shall terminate
-      as of the date such litigation is filed.
-
-   4. Redistribution. You may reproduce and distribute copies of the
-      Work or Derivative Works thereof in any medium, with or without
-      modifications, and in Source or Object form, provided that You
-      meet the following conditions:
-
-      (a) You must give any other recipients of the Work or
-          Derivative Works a copy of this License; and
-
-      (b) You must cause any modified files to carry prominent notices
-          stating that You changed the files; and
-
-      (c) You must retain, in the Source form of any Derivative Works
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-          that such additional attribution notices cannot be construed
-          as modifying the License.
-
-      You may add Your own copyright statement to Your modifications and
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-      for use, reproduction, or distribution of Your modifications, or
-      for any such Derivative Works as a whole, provided Your use,
-      reproduction, and distribution of the Work otherwise complies with
-      the conditions stated in this License.
-
-   5. Submission of Contributions. Unless You explicitly state otherwise,
-      any Contribution intentionally submitted for inclusion in the Work
-      by You to the Licensor shall be under the terms and conditions of
-      this License, without any additional terms or conditions.
-      Notwithstanding the above, nothing herein shall supersede or modify
-      the terms of any separate license agreement you may have executed
-      with Licensor regarding such Contributions.
-
-   6. Trademarks. This License does not grant permission to use the trade
-      names, trademarks, service marks, or product names of the Licensor,
-      except as required for reasonable and customary use in describing the
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-   7. Disclaimer of Warranty. Unless required by applicable law or
-      agreed to in writing, Licensor provides the Work (and each
-      Contributor provides its Contributions) on an "AS IS" BASIS,
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-      appropriateness of using or redistributing the Work and assume any
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-
-   8. Limitation of Liability. In no event and under no legal theory,
-      whether in tort (including negligence), contract, or otherwise,
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-      negligent acts) or agreed to in writing, shall any Contributor be
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-      defend, and hold each Contributor harmless for any liability
-      incurred by, or claims asserted against, such Contributor by reason
-      of your accepting any such warranty or additional liability.
-
-   END OF TERMS AND CONDITIONS
-
-   APPENDIX: How to apply the Apache License to your work.
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-      To apply the Apache License to your work, attach the following
-      boilerplate notice, with the fields enclosed by brackets "{}"
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-      file or class name and description of purpose be included on the
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-   Copyright {yyyy} {name of copyright owner}
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-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.

lib/message/README.md

@@ -1,136 +0,0 @@
-Package message is an encoder/decoder library for MQTT 3.1 and 3.1.1 messages. You can
-find the MQTT specs at the following locations:
-
->	3.1.1 - http://docs.oasis-open.org/mqtt/mqtt/v3.1.1/
->	3.1 - http://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html
-
-From the spec:
-
->	MQTT is a Client Server publish/subscribe messaging transport protocol. It is
->	light weight, open, simple, and designed so as to be easy to implement. These
->	characteristics make it ideal for use in many situations, including constrained
->	environments such as for communication in Machine to Machine (M2M) and Internet
->	of Things (IoT) contexts where a small code footprint is required and/or network
->	bandwidth is at a premium.
->
->	The MQTT protocol works by exchanging a series of MQTT messages in a defined way.
->	The protocol runs over TCP/IP, or over other network protocols that provide
->	ordered, lossless, bi-directional connections.
-
-
-There are two main items to take note in this package. The first is
-
-```
-	type MessageType byte
-```
-
-MessageType is the type representing the MQTT packet types. In the MQTT spec, MQTT
-control packet type is represented as a 4-bit unsigned value. MessageType receives
-several methods that returns string representations of the names and descriptions.
-
-Also, one of the methods is New(). It returns a new Message object based on the mtype
-parameter. For example:
-
-```
-	m, err := CONNECT.New()
-	msg := m.(*ConnectMessage)
-```
-
-This would return a PublishMessage struct, but mapped to the Message interface. You can
-then type assert it back to a *PublishMessage. Another way to create a new
-PublishMessage is to call
-
-```
-	msg := NewConnectMessage()
-```
-
-Every message type has a New function that returns a new message. The list of available
-message types are defined as constants below.
-
-As you may have noticed, the second important item is the Message interface. It defines
-several methods that are common to all messages, including Name(), Desc(), and Type().
-Most importantly, it also defines the Encode() and Decode() methods.
-
-```
-	Encode() (io.Reader, int, error)
-	Decode(io.Reader) (int, error)
-```
-
-Encode returns an io.Reader in which the encoded bytes can be read. The second return
-value is the number of bytes encoded, so the caller knows how many bytes there will be.
-If Encode returns an error, then the first two return values should be considered invalid.
-Any changes to the message after Encode() is called will invalidate the io.Reader.
-
-Decode reads from the io.Reader parameter until a full message is decoded, or when io.Reader
-returns EOF or error. The first return value is the number of bytes read from io.Reader.
-The second is error if Decode encounters any problems.
-
-With these in mind, we can now do:
-
-```
-	// Create a new CONNECT message
-	msg := NewConnectMessage()
-
-	// Set the appropriate parameters
-	msg.SetWillQos(1)
-	msg.SetVersion(4)
-	msg.SetCleanSession(true)
-	msg.SetClientId([]byte("surgemq"))
-	msg.SetKeepAlive(10)
-	msg.SetWillTopic([]byte("will"))
-	msg.SetWillMessage([]byte("send me home"))
-	msg.SetUsername([]byte("surgemq"))
-	msg.SetPassword([]byte("verysecret"))
-
-	// Encode the message and get the io.Reader
-	r, n, err := msg.Encode()
-	if err == nil {
-		return err
-	}
-
-	// Write n bytes into the connection
-	m, err := io.CopyN(conn, r, int64(n))
-	if err != nil {
-		return err
-	}
-
-	fmt.Printf("Sent %d bytes of %s message", m, msg.Name())
-```
-
-To receive a CONNECT message from a connection, we can do:
-
-```
-	// Create a new CONNECT message
-	msg := NewConnectMessage()
-
-	// Decode the message by reading from conn
-	n, err := msg.Decode(conn)
-```
-
-If you don't know what type of message is coming down the pipe, you can do something like this:
-
-```
-	// Create a buffered IO reader for the connection
-	br := bufio.NewReader(conn)
-
-	// Peek at the first byte, which contains the message type
-	b, err := br.Peek(1)
-	if err != nil {
-		return err
-	}
-
-	// Extract the type from the first byte
-	t := MessageType(b[0] >> 4)
-
-	// Create a new message
-	msg, err := t.New()
-	if err != nil {
-		return err
-	}
-
-	// Decode it from the bufio.Reader
-	n, err := msg.Decode(br)
-	if err != nil {
-		return err
-	}
-```

lib/message/connack.go

@@ -1,168 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-import "fmt"
-
-// The CONNACK Packet is the packet sent by the Server in response to a CONNECT Packet
-// received from a Client. The first packet sent from the Server to the Client MUST
-// be a CONNACK Packet [MQTT-3.2.0-1].
-//
-// If the Client does not receive a CONNACK Packet from the Server within a reasonable
-// amount of time, the Client SHOULD close the Network Connection. A "reasonable" amount
-// of time depends on the type of application and the communications infrastructure.
-type ConnackMessage struct {
-	header
-
-	sessionPresent bool
-	returnCode     ConnackCode
-}
-
-var _ Message = (*ConnackMessage)(nil)
-
-// NewConnackMessage creates a new CONNACK message
-func NewConnackMessage() *ConnackMessage {
-	msg := &ConnackMessage{}
-	msg.SetType(CONNACK)
-
-	return msg
-}
-
-// String returns a string representation of the CONNACK message
-func (this ConnackMessage) String() string {
-	return fmt.Sprintf("%s, Session Present=%t, Return code=%q\n", this.header, this.sessionPresent, this.returnCode)
-}
-
-// SessionPresent returns the session present flag value
-func (this *ConnackMessage) SessionPresent() bool {
-	return this.sessionPresent
-}
-
-// SetSessionPresent sets the value of the session present flag
-func (this *ConnackMessage) SetSessionPresent(v bool) {
-	if v {
-		this.sessionPresent = true
-	} else {
-		this.sessionPresent = false
-	}
-
-	this.dirty = true
-}
-
-// ReturnCode returns the return code received for the CONNECT message. The return
-// type is an error
-func (this *ConnackMessage) ReturnCode() ConnackCode {
-	return this.returnCode
-}
-
-func (this *ConnackMessage) SetReturnCode(ret ConnackCode) {
-	this.returnCode = ret
-	this.dirty = true
-}
-
-func (this *ConnackMessage) Len() int {
-	if !this.dirty {
-		return len(this.dbuf)
-	}
-
-	ml := this.msglen()
-
-	if err := this.SetRemainingLength(int32(ml)); err != nil {
-		return 0
-	}
-
-	return this.header.msglen() + ml
-}
-
-func (this *ConnackMessage) Decode(src []byte) (int, error) {
-	total := 0
-
-	n, err := this.header.decode(src)
-	total += n
-	if err != nil {
-		return total, err
-	}
-
-	b := src[total]
-
-	if b&254 != 0 {
-		return 0, fmt.Errorf("connack/Decode: Bits 7-1 in Connack Acknowledge Flags byte (1) are not 0")
-	}
-
-	this.sessionPresent = b&0x1 == 1
-	total++
-
-	b = src[total]
-
-	// Read return code
-	if b > 5 {
-		return 0, fmt.Errorf("connack/Decode: Invalid CONNACK return code (%d)", b)
-	}
-
-	this.returnCode = ConnackCode(b)
-	total++
-
-	this.dirty = false
-
-	return total, nil
-}
-
-func (this *ConnackMessage) Encode(dst []byte) (int, error) {
-	if !this.dirty {
-		if len(dst) < len(this.dbuf) {
-			return 0, fmt.Errorf("connack/Encode: Insufficient buffer size. Expecting %d, got %d.", len(this.dbuf), len(dst))
-		}
-
-		return copy(dst, this.dbuf), nil
-	}
-
-	// CONNACK remaining length fixed at 2 bytes
-	hl := this.header.msglen()
-	ml := this.msglen()
-
-	if len(dst) < hl+ml {
-		return 0, fmt.Errorf("connack/Encode: Insufficient buffer size. Expecting %d, got %d.", hl+ml, len(dst))
-	}
-
-	if err := this.SetRemainingLength(int32(ml)); err != nil {
-		return 0, err
-	}
-
-	total := 0
-
-	n, err := this.header.encode(dst[total:])
-	total += n
-	if err != nil {
-		return 0, err
-	}
-
-	if this.sessionPresent {
-		dst[total] = 1
-	}
-	total++
-
-	if this.returnCode > 5 {
-		return total, fmt.Errorf("connack/Encode: Invalid CONNACK return code (%d)", this.returnCode)
-	}
-
-	dst[total] = this.returnCode.Value()
-	total++
-
-	return total, nil
-}
-
-func (this *ConnackMessage) msglen() int {
-	return 2
-}

lib/message/connack_test.go

@@ -1,160 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TestConnackMessageFields(t *testing.T) {
-	msg := NewConnackMessage()
-
-	msg.SetSessionPresent(true)
-	require.True(t, msg.SessionPresent(), "Error setting session present flag.")
-
-	msg.SetSessionPresent(false)
-	require.False(t, msg.SessionPresent(), "Error setting session present flag.")
-
-	msg.SetReturnCode(ConnectionAccepted)
-	require.Equal(t, ConnectionAccepted, msg.ReturnCode(), "Error setting return code.")
-}
-
-func TestConnackMessageDecode(t *testing.T) {
-	msgBytes := []byte{
-		byte(CONNACK << 4),
-		2,
-		0, // session not present
-		0, // connection accepted
-	}
-
-	msg := NewConnackMessage()
-
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.False(t, msg.SessionPresent(), "Error decoding session present flag.")
-	require.Equal(t, ConnectionAccepted, msg.ReturnCode(), "Error decoding return code.")
-}
-
-// testing wrong message length
-func TestConnackMessageDecode2(t *testing.T) {
-	msgBytes := []byte{
-		byte(CONNACK << 4),
-		3,
-		0, // session not present
-		0, // connection accepted
-	}
-
-	msg := NewConnackMessage()
-
-	_, err := msg.Decode(msgBytes)
-	require.Error(t, err, "Error decoding message.")
-}
-
-// testing wrong message size
-func TestConnackMessageDecode3(t *testing.T) {
-	msgBytes := []byte{
-		byte(CONNACK << 4),
-		2,
-		0, // session not present
-	}
-
-	msg := NewConnackMessage()
-
-	_, err := msg.Decode(msgBytes)
-	require.Error(t, err, "Error decoding message.")
-}
-
-// testing wrong reserve bits
-func TestConnackMessageDecode4(t *testing.T) {
-	msgBytes := []byte{
-		byte(CONNACK << 4),
-		2,
-		64, // <- wrong size
-		0,  // connection accepted
-	}
-
-	msg := NewConnackMessage()
-
-	_, err := msg.Decode(msgBytes)
-	require.Error(t, err, "Error decoding message.")
-}
-
-// testing invalid return code
-func TestConnackMessageDecode5(t *testing.T) {
-	msgBytes := []byte{
-		byte(CONNACK << 4),
-		2,
-		0,
-		6, // <- wrong code
-	}
-
-	msg := NewConnackMessage()
-
-	_, err := msg.Decode(msgBytes)
-	require.Error(t, err, "Error decoding message.")
-}
-
-func TestConnackMessageEncode(t *testing.T) {
-	msgBytes := []byte{
-		byte(CONNACK << 4),
-		2,
-		1, // session present
-		0, // connection accepted
-	}
-
-	msg := NewConnackMessage()
-	msg.SetReturnCode(ConnectionAccepted)
-	msg.SetSessionPresent(true)
-
-	dst := make([]byte, 10)
-	n, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error encoding message.")
-	require.Equal(t, msgBytes, dst[:n], "Error encoding connack message.")
-}
-
-// test to ensure encoding and decoding are the same
-// decode, encode, and decode again
-func TestConnackDecodeEncodeEquiv(t *testing.T) {
-	msgBytes := []byte{
-		byte(CONNACK << 4),
-		2,
-		0, // session not present
-		0, // connection accepted
-	}
-
-	msg := NewConnackMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-
-	dst := make([]byte, 100)
-	n2, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n2, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n2], "Error decoding message.")
-
-	n3, err := msg.Decode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n3, "Error decoding message.")
-}

lib/message/connackcode.go

@@ -1,89 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-// ConnackCode is the type representing the return code in the CONNACK message,
-// returned after the initial CONNECT message
-type ConnackCode byte
-
-const (
-	// Connection accepted
-	ConnectionAccepted ConnackCode = iota
-
-	// The Server does not support the level of the MQTT protocol requested by the Client
-	ErrInvalidProtocolVersion
-
-	// The Client identifier is correct UTF-8 but not allowed by the server
-	ErrIdentifierRejected
-
-	// The Network Connection has been made but the MQTT service is unavailable
-	ErrServerUnavailable
-
-	// The data in the user name or password is malformed
-	ErrBadUsernameOrPassword
-
-	// The Client is not authorized to connect
-	ErrNotAuthorized
-)
-
-// Value returns the value of the ConnackCode, which is just the byte representation
-func (this ConnackCode) Value() byte {
-	return byte(this)
-}
-
-// Desc returns the description of the ConnackCode
-func (this ConnackCode) Desc() string {
-	switch this {
-	case 0:
-		return "Connection accepted"
-	case 1:
-		return "The Server does not support the level of the MQTT protocol requested by the Client"
-	case 2:
-		return "The Client identifier is correct UTF-8 but not allowed by the server"
-	case 3:
-		return "The Network Connection has been made but the MQTT service is unavailable"
-	case 4:
-		return "The data in the user name or password is malformed"
-	case 5:
-		return "The Client is not authorized to connect"
-	}
-
-	return ""
-}
-
-// Valid checks to see if the ConnackCode is valid. Currently valid codes are <= 5
-func (this ConnackCode) Valid() bool {
-	return this <= 5
-}
-
-// Error returns the corresonding error string for the ConnackCode
-func (this ConnackCode) Error() string {
-	switch this {
-	case 0:
-		return "Connection accepted"
-	case 1:
-		return "Connection Refused, unacceptable protocol version"
-	case 2:
-		return "Connection Refused, identifier rejected"
-	case 3:
-		return "Connection Refused, Server unavailable"
-	case 4:
-		return "Connection Refused, bad user name or password"
-	case 5:
-		return "Connection Refused, not authorized"
-	}
-
-	return "Unknown error"
-}

lib/message/connect.go

@@ -1,635 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-import (
-	"encoding/binary"
-	"fmt"
-	"regexp"
-)
-
-var clientIdRegexp *regexp.Regexp
-
-func init() {
-	// Added space for Paho compliance test
-	// Added underscore (_) for MQTT C client test
-	clientIdRegexp = regexp.MustCompile("^[0-9a-zA-Z _]*$")
-}
-
-// After a Network Connection is established by a Client to a Server, the first Packet
-// sent from the Client to the Server MUST be a CONNECT Packet [MQTT-3.1.0-1].
-//
-// A Client can only send the CONNECT Packet once over a Network Connection. The Server
-// MUST process a second CONNECT Packet sent from a Client as a protocol violation and
-// disconnect the Client [MQTT-3.1.0-2].  See section 4.8 for information about
-// handling errors.
-type ConnectMessage struct {
-	header
-
-	// 7: username flag
-	// 6: password flag
-	// 5: will retain
-	// 4-3: will QoS
-	// 2: will flag
-	// 1: clean session
-	// 0: reserved
-	connectFlags byte
-
-	version byte
-
-	keepAlive uint16
-
-	protoName,
-	clientId,
-	willTopic,
-	willMessage,
-	username,
-	password []byte
-}
-
-var _ Message = (*ConnectMessage)(nil)
-
-// NewConnectMessage creates a new CONNECT message.
-func NewConnectMessage() *ConnectMessage {
-	msg := &ConnectMessage{}
-	msg.SetType(CONNECT)
-
-	return msg
-}
-
-// String returns a string representation of the CONNECT message
-func (this ConnectMessage) String() string {
-	return fmt.Sprintf("%s, Connect Flags=%08b, Version=%d, KeepAlive=%d, Client ID=%q, Will Topic=%q, Will Message=%q, Username=%q, Password=%q",
-		this.header,
-		this.connectFlags,
-		this.Version(),
-		this.KeepAlive(),
-		this.ClientId(),
-		this.WillTopic(),
-		this.WillMessage(),
-		this.Username(),
-		this.Password(),
-	)
-}
-
-// Version returns the the 8 bit unsigned value that represents the revision level
-// of the protocol used by the Client. The value of the Protocol Level field for
-// the version 3.1.1 of the protocol is 4 (0x04).
-func (this *ConnectMessage) Version() byte {
-	return this.version
-}
-
-// SetVersion sets the version value of the CONNECT message
-func (this *ConnectMessage) SetVersion(v byte) error {
-	if _, ok := SupportedVersions[v]; !ok {
-		return fmt.Errorf("connect/SetVersion: Invalid version number %d", v)
-	}
-
-	this.version = v
-	this.dirty = true
-
-	return nil
-}
-
-// CleanSession returns the bit that specifies the handling of the Session state.
-// The Client and Server can store Session state to enable reliable messaging to
-// continue across a sequence of Network Connections. This bit is used to control
-// the lifetime of the Session state.
-func (this *ConnectMessage) CleanSession() bool {
-	return ((this.connectFlags >> 1) & 0x1) == 1
-}
-
-// SetCleanSession sets the bit that specifies the handling of the Session state.
-func (this *ConnectMessage) SetCleanSession(v bool) {
-	if v {
-		this.connectFlags |= 0x2 // 00000010
-	} else {
-		this.connectFlags &= 253 // 11111101
-	}
-
-	this.dirty = true
-}
-
-// WillFlag returns the bit that specifies whether a Will Message should be stored
-// on the server. If the Will Flag is set to 1 this indicates that, if the Connect
-// request is accepted, a Will Message MUST be stored on the Server and associated
-// with the Network Connection.
-func (this *ConnectMessage) WillFlag() bool {
-	return ((this.connectFlags >> 2) & 0x1) == 1
-}
-
-// SetWillFlag sets the bit that specifies whether a Will Message should be stored
-// on the server.
-func (this *ConnectMessage) SetWillFlag(v bool) {
-	if v {
-		this.connectFlags |= 0x4 // 00000100
-	} else {
-		this.connectFlags &= 251 // 11111011
-	}
-
-	this.dirty = true
-}
-
-// WillQos returns the two bits that specify the QoS level to be used when publishing
-// the Will Message.
-func (this *ConnectMessage) WillQos() byte {
-	return (this.connectFlags >> 3) & 0x3
-}
-
-// SetWillQos sets the two bits that specify the QoS level to be used when publishing
-// the Will Message.
-func (this *ConnectMessage) SetWillQos(qos byte) error {
-	if qos != QosAtMostOnce && qos != QosAtLeastOnce && qos != QosExactlyOnce {
-		return fmt.Errorf("connect/SetWillQos: Invalid QoS level %d", qos)
-	}
-
-	this.connectFlags = (this.connectFlags & 231) | (qos << 3) // 231 = 11100111
-	this.dirty = true
-
-	return nil
-}
-
-// WillRetain returns the bit specifies if the Will Message is to be Retained when it
-// is published.
-func (this *ConnectMessage) WillRetain() bool {
-	return ((this.connectFlags >> 5) & 0x1) == 1
-}
-
-// SetWillRetain sets the bit specifies if the Will Message is to be Retained when it
-// is published.
-func (this *ConnectMessage) SetWillRetain(v bool) {
-	if v {
-		this.connectFlags |= 32 // 00100000
-	} else {
-		this.connectFlags &= 223 // 11011111
-	}
-
-	this.dirty = true
-}
-
-// UsernameFlag returns the bit that specifies whether a user name is present in the
-// payload.
-func (this *ConnectMessage) UsernameFlag() bool {
-	return ((this.connectFlags >> 7) & 0x1) == 1
-}
-
-// SetUsernameFlag sets the bit that specifies whether a user name is present in the
-// payload.
-func (this *ConnectMessage) SetUsernameFlag(v bool) {
-	if v {
-		this.connectFlags |= 128 // 10000000
-	} else {
-		this.connectFlags &= 127 // 01111111
-	}
-
-	this.dirty = true
-}
-
-// PasswordFlag returns the bit that specifies whether a password is present in the
-// payload.
-func (this *ConnectMessage) PasswordFlag() bool {
-	return ((this.connectFlags >> 6) & 0x1) == 1
-}
-
-// SetPasswordFlag sets the bit that specifies whether a password is present in the
-// payload.
-func (this *ConnectMessage) SetPasswordFlag(v bool) {
-	if v {
-		this.connectFlags |= 64 // 01000000
-	} else {
-		this.connectFlags &= 191 // 10111111
-	}
-
-	this.dirty = true
-}
-
-// KeepAlive returns a time interval measured in seconds. Expressed as a 16-bit word,
-// it is the maximum time interval that is permitted to elapse between the point at
-// which the Client finishes transmitting one Control Packet and the point it starts
-// sending the next.
-func (this *ConnectMessage) KeepAlive() uint16 {
-	return this.keepAlive
-}
-
-// SetKeepAlive sets the time interval in which the server should keep the connection
-// alive.
-func (this *ConnectMessage) SetKeepAlive(v uint16) {
-	this.keepAlive = v
-
-	this.dirty = true
-}
-
-// ClientId returns an ID that identifies the Client to the Server. Each Client
-// connecting to the Server has a unique ClientId. The ClientId MUST be used by
-// Clients and by Servers to identify state that they hold relating to this MQTT
-// Session between the Client and the Server
-func (this *ConnectMessage) ClientId() []byte {
-	return this.clientId
-}
-
-// SetClientId sets an ID that identifies the Client to the Server.
-func (this *ConnectMessage) SetClientId(v []byte) error {
-	if len(v) > 0 && !this.validClientId(v) {
-		return ErrIdentifierRejected
-	}
-
-	this.clientId = v
-	this.dirty = true
-
-	return nil
-}
-
-// WillTopic returns the topic in which the Will Message should be published to.
-// If the Will Flag is set to 1, the Will Topic must be in the payload.
-func (this *ConnectMessage) WillTopic() []byte {
-	return this.willTopic
-}
-
-// SetWillTopic sets the topic in which the Will Message should be published to.
-func (this *ConnectMessage) SetWillTopic(v []byte) {
-	this.willTopic = v
-
-	if len(v) > 0 {
-		this.SetWillFlag(true)
-	} else if len(this.willMessage) == 0 {
-		this.SetWillFlag(false)
-	}
-
-	this.dirty = true
-}
-
-// WillMessage returns the Will Message that is to be published to the Will Topic.
-func (this *ConnectMessage) WillMessage() []byte {
-	return this.willMessage
-}
-
-// SetWillMessage sets the Will Message that is to be published to the Will Topic.
-func (this *ConnectMessage) SetWillMessage(v []byte) {
-	this.willMessage = v
-
-	if len(v) > 0 {
-		this.SetWillFlag(true)
-	} else if len(this.willTopic) == 0 {
-		this.SetWillFlag(false)
-	}
-
-	this.dirty = true
-}
-
-// Username returns the username from the payload. If the User Name Flag is set to 1,
-// this must be in the payload. It can be used by the Server for authentication and
-// authorization.
-func (this *ConnectMessage) Username() []byte {
-	return this.username
-}
-
-// SetUsername sets the username for authentication.
-func (this *ConnectMessage) SetUsername(v []byte) {
-	this.username = v
-
-	if len(v) > 0 {
-		this.SetUsernameFlag(true)
-	} else {
-		this.SetUsernameFlag(false)
-	}
-
-	this.dirty = true
-}
-
-// Password returns the password from the payload. If the Password Flag is set to 1,
-// this must be in the payload. It can be used by the Server for authentication and
-// authorization.
-func (this *ConnectMessage) Password() []byte {
-	return this.password
-}
-
-// SetPassword sets the username for authentication.
-func (this *ConnectMessage) SetPassword(v []byte) {
-	this.password = v
-
-	if len(v) > 0 {
-		this.SetPasswordFlag(true)
-	} else {
-		this.SetPasswordFlag(false)
-	}
-
-	this.dirty = true
-}
-
-func (this *ConnectMessage) Len() int {
-	if !this.dirty {
-		return len(this.dbuf)
-	}
-
-	ml := this.msglen()
-
-	if err := this.SetRemainingLength(int32(ml)); err != nil {
-		return 0
-	}
-
-	return this.header.msglen() + ml
-}
-
-// For the CONNECT message, the error returned could be a ConnackReturnCode, so
-// be sure to check that. Otherwise it's a generic error. If a generic error is
-// returned, this Message should be considered invalid.
-//
-// Caller should call ValidConnackError(err) to see if the returned error is
-// a Connack error. If so, caller should send the Client back the corresponding
-// CONNACK message.
-func (this *ConnectMessage) Decode(src []byte) (int, error) {
-	total := 0
-
-	n, err := this.header.decode(src[total:])
-	if err != nil {
-		return total + n, err
-	}
-	total += n
-
-	if n, err = this.decodeMessage(src[total:]); err != nil {
-		return total + n, err
-	}
-	total += n
-
-	this.dirty = false
-
-	return total, nil
-}
-
-func (this *ConnectMessage) Encode(dst []byte) (int, error) {
-	if !this.dirty {
-		if len(dst) < len(this.dbuf) {
-			return 0, fmt.Errorf("connect/Encode: Insufficient buffer size. Expecting %d, got %d.", len(this.dbuf), len(dst))
-		}
-
-		return copy(dst, this.dbuf), nil
-	}
-
-	if this.Type() != CONNECT {
-		return 0, fmt.Errorf("connect/Encode: Invalid message type. Expecting %d, got %d", CONNECT, this.Type())
-	}
-
-	_, ok := SupportedVersions[this.version]
-	if !ok {
-		return 0, ErrInvalidProtocolVersion
-	}
-
-	hl := this.header.msglen()
-	ml := this.msglen()
-
-	if len(dst) < hl+ml {
-		return 0, fmt.Errorf("connect/Encode: Insufficient buffer size. Expecting %d, got %d.", hl+ml, len(dst))
-	}
-
-	if err := this.SetRemainingLength(int32(ml)); err != nil {
-		return 0, err
-	}
-
-	total := 0
-
-	n, err := this.header.encode(dst[total:])
-	total += n
-	if err != nil {
-		return total, err
-	}
-
-	n, err = this.encodeMessage(dst[total:])
-	total += n
-	if err != nil {
-		return total, err
-	}
-
-	return total, nil
-}
-
-func (this *ConnectMessage) encodeMessage(dst []byte) (int, error) {
-	total := 0
-
-	n, err := writeLPBytes(dst[total:], []byte(SupportedVersions[this.version]))
-	total += n
-	if err != nil {
-		return total, err
-	}
-
-	dst[total] = this.version
-	total += 1
-
-	dst[total] = this.connectFlags
-	total += 1
-
-	binary.BigEndian.PutUint16(dst[total:], this.keepAlive)
-	total += 2
-
-	n, err = writeLPBytes(dst[total:], this.clientId)
-	total += n
-	if err != nil {
-		return total, err
-	}
-
-	if this.WillFlag() {
-		n, err = writeLPBytes(dst[total:], this.willTopic)
-		total += n
-		if err != nil {
-			return total, err
-		}
-
-		n, err = writeLPBytes(dst[total:], this.willMessage)
-		total += n
-		if err != nil {
-			return total, err
-		}
-	}
-
-	// According to the 3.1 spec, it's possible that the usernameFlag is set,
-	// but the username string is missing.
-	if this.UsernameFlag() && len(this.username) > 0 {
-		n, err = writeLPBytes(dst[total:], this.username)
-		total += n
-		if err != nil {
-			return total, err
-		}
-	}
-
-	// According to the 3.1 spec, it's possible that the passwordFlag is set,
-	// but the password string is missing.
-	if this.PasswordFlag() && len(this.password) > 0 {
-		n, err = writeLPBytes(dst[total:], this.password)
-		total += n
-		if err != nil {
-			return total, err
-		}
-	}
-
-	return total, nil
-}
-
-func (this *ConnectMessage) decodeMessage(src []byte) (int, error) {
-	var err error
-	n, total := 0, 0
-
-	this.protoName, n, err = readLPBytes(src[total:])
-	total += n
-	if err != nil {
-		return total, err
-	}
-
-	this.version = src[total]
-	total++
-
-	if verstr, ok := SupportedVersions[this.version]; !ok {
-		return total, ErrInvalidProtocolVersion
-	} else if verstr != string(this.protoName) {
-		return total, ErrInvalidProtocolVersion
-	}
-
-	this.connectFlags = src[total]
-	total++
-
-	if this.connectFlags&0x1 != 0 {
-		return total, fmt.Errorf("connect/decodeMessage: Connect Flags reserved bit 0 is not 0")
-	}
-
-	if this.WillQos() > QosExactlyOnce {
-		return total, fmt.Errorf("connect/decodeMessage: Invalid QoS level (%d) for %s message", this.WillQos(), this.Name())
-	}
-
-	if !this.WillFlag() && (this.WillRetain() || this.WillQos() != QosAtMostOnce) {
-		return total, fmt.Errorf("connect/decodeMessage: Protocol violation: If the Will Flag (%t) is set to 0 the Will QoS (%d) and Will Retain (%t) fields MUST be set to zero", this.WillFlag(), this.WillQos(), this.WillRetain())
-	}
-
-	if this.UsernameFlag() && !this.PasswordFlag() {
-		return total, fmt.Errorf("connect/decodeMessage: Username flag is set but Password flag is not set")
-	}
-
-	if len(src[total:]) < 2 {
-		return 0, fmt.Errorf("connect/decodeMessage: Insufficient buffer size. Expecting %d, got %d.", 2, len(src[total:]))
-	}
-
-	this.keepAlive = binary.BigEndian.Uint16(src[total:])
-	total += 2
-
-	this.clientId, n, err = readLPBytes(src[total:])
-	total += n
-	if err != nil {
-		return total, err
-	}
-
-	// If the Client supplies a zero-byte ClientId, the Client MUST also set CleanSession to 1
-	if len(this.clientId) == 0 && !this.CleanSession() {
-		return total, ErrIdentifierRejected
-	}
-
-	// The ClientId must contain only characters 0-9, a-z, and A-Z
-	// We also support ClientId longer than 23 encoded bytes
-	// We do not support ClientId outside of the above characters
-	if len(this.clientId) > 0 && !this.validClientId(this.clientId) {
-		return total, ErrIdentifierRejected
-	}
-
-	if this.WillFlag() {
-		this.willTopic, n, err = readLPBytes(src[total:])
-		total += n
-		if err != nil {
-			return total, err
-		}
-
-		this.willMessage, n, err = readLPBytes(src[total:])
-		total += n
-		if err != nil {
-			return total, err
-		}
-	}
-
-	// According to the 3.1 spec, it's possible that the passwordFlag is set,
-	// but the password string is missing.
-	if this.UsernameFlag() && len(src[total:]) > 0 {
-		this.username, n, err = readLPBytes(src[total:])
-		total += n
-		if err != nil {
-			return total, err
-		}
-	}
-
-	// According to the 3.1 spec, it's possible that the passwordFlag is set,
-	// but the password string is missing.
-	if this.PasswordFlag() && len(src[total:]) > 0 {
-		this.password, n, err = readLPBytes(src[total:])
-		total += n
-		if err != nil {
-			return total, err
-		}
-	}
-
-	return total, nil
-}
-
-func (this *ConnectMessage) msglen() int {
-	total := 0
-
-	verstr, ok := SupportedVersions[this.version]
-	if !ok {
-		return total
-	}
-
-	// 2 bytes protocol name length
-	// n bytes protocol name
-	// 1 byte protocol version
-	// 1 byte connect flags
-	// 2 bytes keep alive timer
-	total += 2 + len(verstr) + 1 + 1 + 2
-
-	// Add the clientID length, 2 is the length prefix
-	total += 2 + len(this.clientId)
-
-	// Add the will topic and will message length, and the length prefixes
-	if this.WillFlag() {
-		total += 2 + len(this.willTopic) + 2 + len(this.willMessage)
-	}
-
-	// Add the username length
-	// According to the 3.1 spec, it's possible that the usernameFlag is set,
-	// but the user name string is missing.
-	if this.UsernameFlag() && len(this.username) > 0 {
-		total += 2 + len(this.username)
-	}
-
-	// Add the password length
-	// According to the 3.1 spec, it's possible that the passwordFlag is set,
-	// but the password string is missing.
-	if this.PasswordFlag() && len(this.password) > 0 {
-		total += 2 + len(this.password)
-	}
-
-	return total
-}
-
-// validClientId checks the client ID, which is a slice of bytes, to see if it's valid.
-// Client ID is valid if it meets the requirement from the MQTT spec:
-// 		The Server MUST allow ClientIds which are between 1 and 23 UTF-8 encoded bytes in length,
-//		and that contain only the characters
-//
-//		"0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
-func (this *ConnectMessage) validClientId(cid []byte) bool {
-	// Fixed https://github.com/surgemq/surgemq/issues/4
-	//if len(cid) > 23 {
-	//	return false
-	//}
-
-	if this.Version() == 0x3 {
-		return true
-	}
-
-	return clientIdRegexp.Match(cid)
-}

lib/message/connect_test.go

@@ -1,373 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TestConnectMessageFields(t *testing.T) {
-	msg := NewConnectMessage()
-
-	err := msg.SetVersion(0x3)
-	require.NoError(t, err, "Error setting message version.")
-
-	require.Equal(t, 0x3, int(msg.Version()), "Incorrect version number")
-
-	err = msg.SetVersion(0x5)
-	require.Error(t, err)
-
-	msg.SetCleanSession(true)
-	require.True(t, msg.CleanSession(), "Error setting clean session flag.")
-
-	msg.SetCleanSession(false)
-	require.False(t, msg.CleanSession(), "Error setting clean session flag.")
-
-	msg.SetWillFlag(true)
-	require.True(t, msg.WillFlag(), "Error setting will flag.")
-
-	msg.SetWillFlag(false)
-	require.False(t, msg.WillFlag(), "Error setting will flag.")
-
-	msg.SetWillRetain(true)
-	require.True(t, msg.WillRetain(), "Error setting will retain.")
-
-	msg.SetWillRetain(false)
-	require.False(t, msg.WillRetain(), "Error setting will retain.")
-
-	msg.SetPasswordFlag(true)
-	require.True(t, msg.PasswordFlag(), "Error setting password flag.")
-
-	msg.SetPasswordFlag(false)
-	require.False(t, msg.PasswordFlag(), "Error setting password flag.")
-
-	msg.SetUsernameFlag(true)
-	require.True(t, msg.UsernameFlag(), "Error setting username flag.")
-
-	msg.SetUsernameFlag(false)
-	require.False(t, msg.UsernameFlag(), "Error setting username flag.")
-
-	msg.SetWillQos(1)
-	require.Equal(t, 1, int(msg.WillQos()), "Error setting will QoS.")
-
-	err = msg.SetWillQos(4)
-	require.Error(t, err)
-
-	err = msg.SetClientId([]byte("j0j0jfajf02j0asdjf"))
-	require.NoError(t, err, "Error setting client ID")
-
-	require.Equal(t, "j0j0jfajf02j0asdjf", string(msg.ClientId()), "Error setting client ID.")
-
-	err = msg.SetClientId([]byte("this is good for v3"))
-	require.NoError(t, err)
-
-	msg.SetVersion(0x4)
-
-	err = msg.SetClientId([]byte("this is no good for v4!"))
-	require.Error(t, err)
-
-	msg.SetVersion(0x3)
-
-	msg.SetWillTopic([]byte("willtopic"))
-	require.Equal(t, "willtopic", string(msg.WillTopic()), "Error setting will topic.")
-
-	require.True(t, msg.WillFlag(), "Error setting will flag.")
-
-	msg.SetWillTopic([]byte(""))
-	require.Equal(t, "", string(msg.WillTopic()), "Error setting will topic.")
-
-	require.False(t, msg.WillFlag(), "Error setting will flag.")
-
-	msg.SetWillMessage([]byte("this is a will message"))
-	require.Equal(t, "this is a will message", string(msg.WillMessage()), "Error setting will message.")
-
-	require.True(t, msg.WillFlag(), "Error setting will flag.")
-
-	msg.SetWillMessage([]byte(""))
-	require.Equal(t, "", string(msg.WillMessage()), "Error setting will topic.")
-
-	require.False(t, msg.WillFlag(), "Error setting will flag.")
-
-	msg.SetWillTopic([]byte("willtopic"))
-	msg.SetWillMessage([]byte("this is a will message"))
-	msg.SetWillTopic([]byte(""))
-	require.True(t, msg.WillFlag(), "Error setting will topic.")
-
-	msg.SetUsername([]byte("myname"))
-	require.Equal(t, "myname", string(msg.Username()), "Error setting will message.")
-
-	require.True(t, msg.UsernameFlag(), "Error setting will flag.")
-
-	msg.SetUsername([]byte(""))
-	require.Equal(t, "", string(msg.Username()), "Error setting will message.")
-
-	require.False(t, msg.UsernameFlag(), "Error setting will flag.")
-
-	msg.SetPassword([]byte("myname"))
-	require.Equal(t, "myname", string(msg.Password()), "Error setting will message.")
-
-	require.True(t, msg.PasswordFlag(), "Error setting will flag.")
-
-	msg.SetPassword([]byte(""))
-	require.Equal(t, "", string(msg.Password()), "Error setting will message.")
-
-	require.False(t, msg.PasswordFlag(), "Error setting will flag.")
-}
-
-func TestConnectMessageDecode(t *testing.T) {
-	msgBytes := []byte{
-		byte(CONNECT << 4),
-		60,
-		0, // Length MSB (0)
-		4, // Length LSB (4)
-		'M', 'Q', 'T', 'T',
-		4,   // Protocol level 4
-		206, // connect flags 11001110, will QoS = 01
-		0,   // Keep Alive MSB (0)
-		10,  // Keep Alive LSB (10)
-		0,   // Client ID MSB (0)
-		7,   // Client ID LSB (7)
-		's', 'u', 'r', 'g', 'e', 'm', 'q',
-		0, // Will Topic MSB (0)
-		4, // Will Topic LSB (4)
-		'w', 'i', 'l', 'l',
-		0,  // Will Message MSB (0)
-		12, // Will Message LSB (12)
-		's', 'e', 'n', 'd', ' ', 'm', 'e', ' ', 'h', 'o', 'm', 'e',
-		0, // Username ID MSB (0)
-		7, // Username ID LSB (7)
-		's', 'u', 'r', 'g', 'e', 'm', 'q',
-		0,  // Password ID MSB (0)
-		10, // Password ID LSB (10)
-		'v', 'e', 'r', 'y', 's', 'e', 'c', 'r', 'e', 't',
-	}
-
-	msg := NewConnectMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, 206, int(msg.connectFlags), "Incorrect flag value.")
-	require.Equal(t, 10, int(msg.KeepAlive()), "Incorrect KeepAlive value.")
-	require.Equal(t, "surgemq", string(msg.ClientId()), "Incorrect client ID value.")
-	require.Equal(t, "will", string(msg.WillTopic()), "Incorrect will topic value.")
-	require.Equal(t, "send me home", string(msg.WillMessage()), "Incorrect will message value.")
-	require.Equal(t, "surgemq", string(msg.Username()), "Incorrect username value.")
-	require.Equal(t, "verysecret", string(msg.Password()), "Incorrect password value.")
-}
-
-func TestConnectMessageDecode2(t *testing.T) {
-	// missing last byte 't'
-	msgBytes := []byte{
-		byte(CONNECT << 4),
-		60,
-		0, // Length MSB (0)
-		4, // Length LSB (4)
-		'M', 'Q', 'T', 'T',
-		4,   // Protocol level 4
-		206, // connect flags 11001110, will QoS = 01
-		0,   // Keep Alive MSB (0)
-		10,  // Keep Alive LSB (10)
-		0,   // Client ID MSB (0)
-		7,   // Client ID LSB (7)
-		's', 'u', 'r', 'g', 'e', 'm', 'q',
-		0, // Will Topic MSB (0)
-		4, // Will Topic LSB (4)
-		'w', 'i', 'l', 'l',
-		0,  // Will Message MSB (0)
-		12, // Will Message LSB (12)
-		's', 'e', 'n', 'd', ' ', 'm', 'e', ' ', 'h', 'o', 'm', 'e',
-		0, // Username ID MSB (0)
-		7, // Username ID LSB (7)
-		's', 'u', 'r', 'g', 'e', 'm', 'q',
-		0,  // Password ID MSB (0)
-		10, // Password ID LSB (10)
-		'v', 'e', 'r', 'y', 's', 'e', 'c', 'r', 'e',
-	}
-
-	msg := NewConnectMessage()
-	_, err := msg.Decode(msgBytes)
-
-	require.Error(t, err)
-}
-
-func TestConnectMessageDecode3(t *testing.T) {
-	// extra bytes
-	msgBytes := []byte{
-		byte(CONNECT << 4),
-		60,
-		0, // Length MSB (0)
-		4, // Length LSB (4)
-		'M', 'Q', 'T', 'T',
-		4,   // Protocol level 4
-		206, // connect flags 11001110, will QoS = 01
-		0,   // Keep Alive MSB (0)
-		10,  // Keep Alive LSB (10)
-		0,   // Client ID MSB (0)
-		7,   // Client ID LSB (7)
-		's', 'u', 'r', 'g', 'e', 'm', 'q',
-		0, // Will Topic MSB (0)
-		4, // Will Topic LSB (4)
-		'w', 'i', 'l', 'l',
-		0,  // Will Message MSB (0)
-		12, // Will Message LSB (12)
-		's', 'e', 'n', 'd', ' ', 'm', 'e', ' ', 'h', 'o', 'm', 'e',
-		0, // Username ID MSB (0)
-		7, // Username ID LSB (7)
-		's', 'u', 'r', 'g', 'e', 'm', 'q',
-		0,  // Password ID MSB (0)
-		10, // Password ID LSB (10)
-		'v', 'e', 'r', 'y', 's', 'e', 'c', 'r', 'e', 't',
-		'e', 'x', 't', 'r', 'a',
-	}
-
-	msg := NewConnectMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err)
-	require.Equal(t, 62, n)
-}
-
-func TestConnectMessageDecode4(t *testing.T) {
-	// missing client Id, clean session == 0
-	msgBytes := []byte{
-		byte(CONNECT << 4),
-		53,
-		0, // Length MSB (0)
-		4, // Length LSB (4)
-		'M', 'Q', 'T', 'T',
-		4,   // Protocol level 4
-		204, // connect flags 11001110, will QoS = 01
-		0,   // Keep Alive MSB (0)
-		10,  // Keep Alive LSB (10)
-		0,   // Client ID MSB (0)
-		0,   // Client ID LSB (0)
-		0,   // Will Topic MSB (0)
-		4,   // Will Topic LSB (4)
-		'w', 'i', 'l', 'l',
-		0,  // Will Message MSB (0)
-		12, // Will Message LSB (12)
-		's', 'e', 'n', 'd', ' ', 'm', 'e', ' ', 'h', 'o', 'm', 'e',
-		0, // Username ID MSB (0)
-		7, // Username ID LSB (7)
-		's', 'u', 'r', 'g', 'e', 'm', 'q',
-		0,  // Password ID MSB (0)
-		10, // Password ID LSB (10)
-		'v', 'e', 'r', 'y', 's', 'e', 'c', 'r', 'e', 't',
-	}
-
-	msg := NewConnectMessage()
-	_, err := msg.Decode(msgBytes)
-
-	require.Error(t, err)
-}
-
-func TestConnectMessageEncode(t *testing.T) {
-	msgBytes := []byte{
-		byte(CONNECT << 4),
-		60,
-		0, // Length MSB (0)
-		4, // Length LSB (4)
-		'M', 'Q', 'T', 'T',
-		4,   // Protocol level 4
-		206, // connect flags 11001110, will QoS = 01
-		0,   // Keep Alive MSB (0)
-		10,  // Keep Alive LSB (10)
-		0,   // Client ID MSB (0)
-		7,   // Client ID LSB (7)
-		's', 'u', 'r', 'g', 'e', 'm', 'q',
-		0, // Will Topic MSB (0)
-		4, // Will Topic LSB (4)
-		'w', 'i', 'l', 'l',
-		0,  // Will Message MSB (0)
-		12, // Will Message LSB (12)
-		's', 'e', 'n', 'd', ' ', 'm', 'e', ' ', 'h', 'o', 'm', 'e',
-		0, // Username ID MSB (0)
-		7, // Username ID LSB (7)
-		's', 'u', 'r', 'g', 'e', 'm', 'q',
-		0,  // Password ID MSB (0)
-		10, // Password ID LSB (10)
-		'v', 'e', 'r', 'y', 's', 'e', 'c', 'r', 'e', 't',
-	}
-
-	msg := NewConnectMessage()
-	msg.SetWillQos(1)
-	msg.SetVersion(4)
-	msg.SetCleanSession(true)
-	msg.SetClientId([]byte("surgemq"))
-	msg.SetKeepAlive(10)
-	msg.SetWillTopic([]byte("will"))
-	msg.SetWillMessage([]byte("send me home"))
-	msg.SetUsername([]byte("surgemq"))
-	msg.SetPassword([]byte("verysecret"))
-
-	dst := make([]byte, 100)
-	n, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n], "Error decoding message.")
-}
-
-// test to ensure encoding and decoding are the same
-// decode, encode, and decode again
-func TestConnectDecodeEncodeEquiv(t *testing.T) {
-	msgBytes := []byte{
-		byte(CONNECT << 4),
-		60,
-		0, // Length MSB (0)
-		4, // Length LSB (4)
-		'M', 'Q', 'T', 'T',
-		4,   // Protocol level 4
-		206, // connect flags 11001110, will QoS = 01
-		0,   // Keep Alive MSB (0)
-		10,  // Keep Alive LSB (10)
-		0,   // Client ID MSB (0)
-		7,   // Client ID LSB (7)
-		's', 'u', 'r', 'g', 'e', 'm', 'q',
-		0, // Will Topic MSB (0)
-		4, // Will Topic LSB (4)
-		'w', 'i', 'l', 'l',
-		0,  // Will Message MSB (0)
-		12, // Will Message LSB (12)
-		's', 'e', 'n', 'd', ' ', 'm', 'e', ' ', 'h', 'o', 'm', 'e',
-		0, // Username ID MSB (0)
-		7, // Username ID LSB (7)
-		's', 'u', 'r', 'g', 'e', 'm', 'q',
-		0,  // Password ID MSB (0)
-		10, // Password ID LSB (10)
-		'v', 'e', 'r', 'y', 's', 'e', 'c', 'r', 'e', 't',
-	}
-
-	msg := NewConnectMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-
-	dst := make([]byte, 100)
-	n2, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n2, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n2], "Error decoding message.")
-
-	n3, err := msg.Decode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n3, "Error decoding message.")
-}

lib/message/disconnect.go

@@ -1,49 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-import "fmt"
-
-// The DISCONNECT Packet is the final Control Packet sent from the Client to the Server.
-// It indicates that the Client is disconnecting cleanly.
-type DisconnectMessage struct {
-	header
-}
-
-var _ Message = (*DisconnectMessage)(nil)
-
-// NewDisconnectMessage creates a new DISCONNECT message.
-func NewDisconnectMessage() *DisconnectMessage {
-	msg := &DisconnectMessage{}
-	msg.SetType(DISCONNECT)
-
-	return msg
-}
-
-func (this *DisconnectMessage) Decode(src []byte) (int, error) {
-	return this.header.decode(src)
-}
-
-func (this *DisconnectMessage) Encode(dst []byte) (int, error) {
-	if !this.dirty {
-		if len(dst) < len(this.dbuf) {
-			return 0, fmt.Errorf("disconnect/Encode: Insufficient buffer size. Expecting %d, got %d.", len(this.dbuf), len(dst))
-		}
-
-		return copy(dst, this.dbuf), nil
-	}
-
-	return this.header.encode(dst)
-}

lib/message/disconnect_test.go

@@ -1,78 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TestDisconnectMessageDecode(t *testing.T) {
-	msgBytes := []byte{
-		byte(DISCONNECT << 4),
-		0,
-	}
-
-	msg := NewDisconnectMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, DISCONNECT, msg.Type(), "Error decoding message.")
-}
-
-func TestDisconnectMessageEncode(t *testing.T) {
-	msgBytes := []byte{
-		byte(DISCONNECT << 4),
-		0,
-	}
-
-	msg := NewDisconnectMessage()
-
-	dst := make([]byte, 10)
-	n, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n], "Error decoding message.")
-}
-
-// test to ensure encoding and decoding are the same
-// decode, encode, and decode again
-func TestDisconnectDecodeEncodeEquiv(t *testing.T) {
-	msgBytes := []byte{
-		byte(DISCONNECT << 4),
-		0,
-	}
-
-	msg := NewDisconnectMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-
-	dst := make([]byte, 100)
-	n2, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n2, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n2], "Error decoding message.")
-
-	n3, err := msg.Decode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n3, "Error decoding message.")
-}

lib/message/doc.go

@@ -1,141 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-/*
-Package message is an encoder/decoder library for MQTT 3.1 and 3.1.1 messages. You can
-find the MQTT specs at the following locations:
-
-	3.1.1 - http://docs.oasis-open.org/mqtt/mqtt/v3.1.1/
-	3.1 - http://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html
-
-From the spec:
-
-	MQTT is a Client Server publish/subscribe messaging transport protocol. It is
-	light weight, open, simple, and designed so as to be easy to implement. These
-	characteristics make it ideal for use in many situations, including constrained
-	environments such as for communication in Machine to Machine (M2M) and Internet
-	of Things (IoT) contexts where a small code footprint is required and/or network
-	bandwidth is at a premium.
-
-	The MQTT protocol works by exchanging a series of MQTT messages in a defined way.
-	The protocol runs over TCP/IP, or over other network protocols that provide
-	ordered, lossless, bi-directional connections.
-
-
-There are two main items to take note in this package. The first is
-
-	type MessageType byte
-
-MessageType is the type representing the MQTT packet types. In the MQTT spec, MQTT
-control packet type is represented as a 4-bit unsigned value. MessageType receives
-several methods that returns string representations of the names and descriptions.
-
-Also, one of the methods is New(). It returns a new Message object based on the mtype
-parameter. For example:
-
-	m, err := CONNECT.New()
-	msg := m.(*ConnectMessage)
-
-This would return a PublishMessage struct, but mapped to the Message interface. You can
-then type assert it back to a *PublishMessage. Another way to create a new
-PublishMessage is to call
-
-	msg := NewConnectMessage()
-
-Every message type has a New function that returns a new message. The list of available
-message types are defined as constants below.
-
-As you may have noticed, the second important item is the Message interface. It defines
-several methods that are common to all messages, including Name(), Desc(), and Type().
-Most importantly, it also defines the Encode() and Decode() methods.
-
-	Encode() (io.Reader, int, error)
-	Decode(io.Reader) (int, error)
-
-Encode returns an io.Reader in which the encoded bytes can be read. The second return
-value is the number of bytes encoded, so the caller knows how many bytes there will be.
-If Encode returns an error, then the first two return values should be considered invalid.
-Any changes to the message after Encode() is called will invalidate the io.Reader.
-
-Decode reads from the io.Reader parameter until a full message is decoded, or when io.Reader
-returns EOF or error. The first return value is the number of bytes read from io.Reader.
-The second is error if Decode encounters any problems.
-
-With these in mind, we can now do:
-
-	// Create a new CONNECT message
-	msg := NewConnectMessage()
-
-	// Set the appropriate parameters
-	msg.SetWillQos(1)
-	msg.SetVersion(4)
-	msg.SetCleanSession(true)
-	msg.SetClientId([]byte("surgemq"))
-	msg.SetKeepAlive(10)
-	msg.SetWillTopic([]byte("will"))
-	msg.SetWillMessage([]byte("send me home"))
-	msg.SetUsername([]byte("surgemq"))
-	msg.SetPassword([]byte("verysecret"))
-
-	// Encode the message and get the io.Reader
-	r, n, err := msg.Encode()
-	if err == nil {
-		return err
-	}
-
-	// Write n bytes into the connection
-	m, err := io.CopyN(conn, r, int64(n))
-	if err != nil {
-		return err
-	}
-
-	fmt.Printf("Sent %d bytes of %s message", m, msg.Name())
-
-To receive a CONNECT message from a connection, we can do:
-
-	// Create a new CONNECT message
-	msg := NewConnectMessage()
-
-	// Decode the message by reading from conn
-	n, err := msg.Decode(conn)
-
-If you don't know what type of message is coming down the pipe, you can do something like this:
-
-	// Create a buffered IO reader for the connection
-	br := bufio.NewReader(conn)
-
-	// Peek at the first byte, which contains the message type
-	b, err := br.Peek(1)
-	if err != nil {
-		return err
-	}
-
-	// Extract the type from the first byte
-	t := MessageType(b[0] >> 4)
-
-	// Create a new message
-	msg, err := t.New()
-	if err != nil {
-		return err
-	}
-
-	// Decode it from the bufio.Reader
-	n, err := msg.Decode(br)
-	if err != nil {
-		return err
-	}
-
-
-*/
-package message

lib/message/header.go

@@ -1,248 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-import (
-	"encoding/binary"
-	"fmt"
-)
-
-var (
-	gPacketId uint64 = 0
-)
-
-// Fixed header
-// - 1 byte for control packet type (bits 7-4) and flags (bits 3-0)
-// - up to 4 byte for remaining length
-type header struct {
-	// Header fields
-	//mtype  MessageType
-	//flags  byte
-	remlen int32
-
-	// mtypeflags is the first byte of the buffer, 4 bits for mtype, 4 bits for flags
-	mtypeflags []byte
-
-	// Some messages need packet ID, 2 byte uint16
-	packetId []byte
-
-	// Points to the decoding buffer
-	dbuf []byte
-
-	// Whether the message has changed since last decode
-	dirty bool
-}
-
-// String returns a string representation of the message.
-func (this header) String() string {
-	return fmt.Sprintf("Type=%q, Flags=%08b, Remaining Length=%d", this.Type().Name(), this.Flags(), this.remlen)
-}
-
-// Name returns a string representation of the message type. Examples include
-// "PUBLISH", "SUBSCRIBE", and others. This is statically defined for each of
-// the message types and cannot be changed.
-func (this *header) Name() string {
-	return this.Type().Name()
-}
-
-// Desc returns a string description of the message type. For example, a
-// CONNECT message would return "Client request to connect to Server." These
-// descriptions are statically defined (copied from the MQTT spec) and cannot
-// be changed.
-func (this *header) Desc() string {
-	return this.Type().Desc()
-}
-
-// Type returns the MessageType of the Message. The retured value should be one
-// of the constants defined for MessageType.
-func (this *header) Type() MessageType {
-	//return this.mtype
-	if len(this.mtypeflags) != 1 {
-		this.mtypeflags = make([]byte, 1)
-		this.dirty = true
-	}
-
-	return MessageType(this.mtypeflags[0] >> 4)
-}
-
-// SetType sets the message type of this message. It also correctly sets the
-// default flags for the message type. It returns an error if the type is invalid.
-func (this *header) SetType(mtype MessageType) error {
-	if !mtype.Valid() {
-		return fmt.Errorf("header/SetType: Invalid control packet type %d", mtype)
-	}
-
-	// Notice we don't set the message to be dirty when we are not allocating a new
-	// buffer. In this case, it means the buffer is probably a sub-slice of another
-	// slice. If that's the case, then during encoding we would have copied the whole
-	// backing buffer anyway.
-	if len(this.mtypeflags) != 1 {
-		this.mtypeflags = make([]byte, 1)
-		this.dirty = true
-	}
-
-	this.mtypeflags[0] = byte(mtype)<<4 | (mtype.DefaultFlags() & 0xf)
-
-	return nil
-}
-
-// Flags returns the fixed header flags for this message.
-func (this *header) Flags() byte {
-	//return this.flags
-	return this.mtypeflags[0] & 0x0f
-}
-
-// RemainingLength returns the length of the non-fixed-header part of the message.
-func (this *header) RemainingLength() int32 {
-	return this.remlen
-}
-
-// SetRemainingLength sets the length of the non-fixed-header part of the message.
-// It returns error if the length is greater than 268435455, which is the max
-// message length as defined by the MQTT spec.
-func (this *header) SetRemainingLength(remlen int32) error {
-	if remlen > maxRemainingLength || remlen < 0 {
-		return fmt.Errorf("header/SetLength: Remaining length (%d) out of bound (max %d, min 0)", remlen, maxRemainingLength)
-	}
-
-	this.remlen = remlen
-	this.dirty = true
-
-	return nil
-}
-
-func (this *header) Len() int {
-	return this.msglen()
-}
-
-// PacketId returns the ID of the packet.
-func (this *header) PacketId() uint16 {
-	if len(this.packetId) == 2 {
-		return binary.BigEndian.Uint16(this.packetId)
-	}
-
-	return 0
-}
-
-// SetPacketId sets the ID of the packet.
-func (this *header) SetPacketId(v uint16) {
-	// If setting to 0, nothing to do, move on
-	if v == 0 {
-		return
-	}
-
-	// If packetId buffer is not 2 bytes (uint16), then we allocate a new one and
-	// make dirty. Then we encode the packet ID into the buffer.
-	if len(this.packetId) != 2 {
-		this.packetId = make([]byte, 2)
-		this.dirty = true
-	}
-
-	// Notice we don't set the message to be dirty when we are not allocating a new
-	// buffer. In this case, it means the buffer is probably a sub-slice of another
-	// slice. If that's the case, then during encoding we would have copied the whole
-	// backing buffer anyway.
-	binary.BigEndian.PutUint16(this.packetId, v)
-}
-
-func (this *header) encode(dst []byte) (int, error) {
-	ml := this.msglen()
-
-	if len(dst) < ml {
-		return 0, fmt.Errorf("header/Encode: Insufficient buffer size. Expecting %d, got %d.", ml, len(dst))
-	}
-
-	total := 0
-
-	if this.remlen > maxRemainingLength || this.remlen < 0 {
-		return total, fmt.Errorf("header/Encode: Remaining length (%d) out of bound (max %d, min 0)", this.remlen, maxRemainingLength)
-	}
-
-	if !this.Type().Valid() {
-		return total, fmt.Errorf("header/Encode: Invalid message type %d", this.Type())
-	}
-
-	dst[total] = this.mtypeflags[0]
-	total += 1
-
-	n := binary.PutUvarint(dst[total:], uint64(this.remlen))
-	total += n
-
-	return total, nil
-}
-
-// Decode reads from the io.Reader parameter until a full message is decoded, or
-// when io.Reader returns EOF or error. The first return value is the number of
-// bytes read from io.Reader. The second is error if Decode encounters any problems.
-func (this *header) decode(src []byte) (int, error) {
-	total := 0
-
-	this.dbuf = src
-
-	mtype := this.Type()
-	//mtype := MessageType(0)
-
-	this.mtypeflags = src[total : total+1]
-	//mtype := MessageType(src[total] >> 4)
-	if !this.Type().Valid() {
-		return total, fmt.Errorf("header/Decode: Invalid message type %d.", mtype)
-	}
-
-	if mtype != this.Type() {
-		return total, fmt.Errorf("header/Decode: Invalid message type %d. Expecting %d.", this.Type(), mtype)
-	}
-
-	//this.flags = src[total] & 0x0f
-	if this.Type() != PUBLISH && this.Flags() != this.Type().DefaultFlags() {
-		return total, fmt.Errorf("header/Decode: Invalid message (%d) flags. Expecting %d, got %d", this.Type(), this.Type().DefaultFlags(), this.Flags())
-	}
-
-	if this.Type() == PUBLISH && !ValidQos((this.Flags()>>1)&0x3) {
-		return total, fmt.Errorf("header/Decode: Invalid QoS (%d) for PUBLISH message.", (this.Flags()>>1)&0x3)
-	}
-
-	total++
-
-	remlen, m := binary.Uvarint(src[total:])
-	total += m
-	this.remlen = int32(remlen)
-
-	if this.remlen > maxRemainingLength || remlen < 0 {
-		return total, fmt.Errorf("header/Decode: Remaining length (%d) out of bound (max %d, min 0)", this.remlen, maxRemainingLength)
-	}
-
-	if int(this.remlen) > len(src[total:]) {
-		return total, fmt.Errorf("header/Decode: Remaining length (%d) is greater than remaining buffer (%d)", this.remlen, len(src[total:]))
-	}
-
-	return total, nil
-}
-
-func (this *header) msglen() int {
-	// message type and flag byte
-	total := 1
-
-	if this.remlen <= 127 {
-		total += 1
-	} else if this.remlen <= 16383 {
-		total += 2
-	} else if this.remlen <= 2097151 {
-		total += 3
-	} else {
-		total += 4
-	}
-
-	return total
-}

lib/message/header_test.go

@@ -1,182 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TestMessageHeaderFields(t *testing.T) {
-	header := &header{}
-
-	header.SetRemainingLength(33)
-
-	require.Equal(t, int32(33), header.RemainingLength())
-
-	err := header.SetRemainingLength(268435456)
-
-	require.Error(t, err)
-
-	err = header.SetRemainingLength(-1)
-
-	require.Error(t, err)
-
-	err = header.SetType(RESERVED)
-
-	require.Error(t, err)
-
-	err = header.SetType(PUBREL)
-
-	require.NoError(t, err)
-	require.Equal(t, PUBREL, header.Type())
-	require.Equal(t, "PUBREL", header.Name())
-	require.Equal(t, 2, int(header.Flags()))
-}
-
-// Not enough bytes
-func TestMessageHeaderDecode(t *testing.T) {
-	buf := []byte{0x6f, 193, 2}
-	header := &header{}
-
-	_, err := header.decode(buf)
-	require.Error(t, err)
-}
-
-// Remaining length too big
-func TestMessageHeaderDecode2(t *testing.T) {
-	buf := []byte{0x62, 0xff, 0xff, 0xff, 0xff}
-	header := &header{}
-
-	_, err := header.decode(buf)
-	require.Error(t, err)
-}
-
-func TestMessageHeaderDecode3(t *testing.T) {
-	buf := []byte{0x62, 0xff}
-	header := &header{}
-
-	_, err := header.decode(buf)
-	require.Error(t, err)
-}
-
-func TestMessageHeaderDecode4(t *testing.T) {
-	buf := []byte{0x62, 0xff, 0xff, 0xff, 0x7f}
-	header := &header{
-		mtypeflags: []byte{6<<4 | 2},
-		//mtype:      6,
-		//flags:      2,
-	}
-
-	n, err := header.decode(buf)
-
-	require.Error(t, err)
-	require.Equal(t, 5, n)
-	require.Equal(t, maxRemainingLength, header.RemainingLength())
-}
-
-func TestMessageHeaderDecode5(t *testing.T) {
-	buf := []byte{0x62, 0xff, 0x7f}
-	header := &header{
-		mtypeflags: []byte{6<<4 | 2},
-		//mtype:      6,
-		//flags:      2,
-	}
-
-	n, err := header.decode(buf)
-	require.Error(t, err)
-	require.Equal(t, 3, n)
-}
-
-func TestMessageHeaderEncode1(t *testing.T) {
-	header := &header{}
-	headerBytes := []byte{0x62, 193, 2}
-
-	err := header.SetType(PUBREL)
-
-	require.NoError(t, err)
-
-	err = header.SetRemainingLength(321)
-
-	require.NoError(t, err)
-
-	buf := make([]byte, 3)
-	n, err := header.encode(buf)
-
-	require.NoError(t, err)
-	require.Equal(t, 3, n)
-	require.Equal(t, headerBytes, buf)
-}
-
-func TestMessageHeaderEncode2(t *testing.T) {
-	header := &header{}
-
-	err := header.SetType(PUBREL)
-	require.NoError(t, err)
-
-	header.remlen = 268435456
-
-	buf := make([]byte, 5)
-	_, err = header.encode(buf)
-
-	require.Error(t, err)
-}
-
-func TestMessageHeaderEncode3(t *testing.T) {
-	header := &header{}
-	headerBytes := []byte{0x62, 0xff, 0xff, 0xff, 0x7f}
-
-	err := header.SetType(PUBREL)
-
-	require.NoError(t, err)
-
-	err = header.SetRemainingLength(maxRemainingLength)
-
-	require.NoError(t, err)
-
-	buf := make([]byte, 5)
-	n, err := header.encode(buf)
-
-	require.NoError(t, err)
-	require.Equal(t, 5, n)
-	require.Equal(t, headerBytes, buf)
-}
-
-func TestMessageHeaderEncode4(t *testing.T) {
-	header := &header{
-		mtypeflags: []byte{byte(RESERVED2) << 4},
-		//mtype:      6,
-		//flags:      2,
-	}
-
-	buf := make([]byte, 5)
-	_, err := header.encode(buf)
-	require.Error(t, err)
-}
-
-/*
-// This test is to ensure that an empty message is at least 2 bytes long
-func TestMessageHeaderEncode5(t *testing.T) {
-	msg := NewPingreqMessage()
-
-	dst, n, err := msg.encode()
-	if err != nil {
-		t.Errorf("Error encoding PINGREQ message: %v", err)
-	} else if n != 2 {
-		t.Errorf("Incorrect result. Expecting length of 2 bytes, got %d.", dst.(*bytes.Buffer).Len())
-	}
-}
-*/

lib/message/message.go

@@ -1,410 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-import (
-	"bytes"
-	"encoding/binary"
-	"fmt"
-)
-
-const (
-	maxLPString          uint16 = 65535
-	maxFixedHeaderLength int    = 5
-	maxRemainingLength   int32  = 268435455 // bytes, or 256 MB
-)
-
-const (
-	// QoS 0: At most once delivery
-	// The message is delivered according to the capabilities of the underlying network.
-	// No response is sent by the receiver and no retry is performed by the sender. The
-	// message arrives at the receiver either once or not at all.
-	QosAtMostOnce byte = iota
-
-	// QoS 1: At least once delivery
-	// This quality of service ensures that the message arrives at the receiver at least once.
-	// A QoS 1 PUBLISH Packet has a Packet Identifier in its variable header and is acknowledged
-	// by a PUBACK Packet. Section 2.3.1 provides more information about Packet Identifiers.
-	QosAtLeastOnce
-
-	// QoS 2: Exactly once delivery
-	// This is the highest quality of service, for use when neither loss nor duplication of
-	// messages are acceptable. There is an increased overhead associated with this quality of
-	// service.
-	QosExactlyOnce
-
-	// QosFailure is a return value for a subscription if there's a problem while subscribing
-	// to a specific topic.
-	QosFailure = 0x80
-)
-
-// SupportedVersions is a map of the version number (0x3 or 0x4) to the version string,
-// "MQIsdp" for 0x3, and "MQTT" for 0x4.
-var SupportedVersions map[byte]string = map[byte]string{
-	0x3: "MQIsdp",
-	0x4: "MQTT",
-}
-
-// MessageType is the type representing the MQTT packet types. In the MQTT spec,
-// MQTT control packet type is represented as a 4-bit unsigned value.
-type MessageType byte
-
-// Message is an interface defined for all MQTT message types.
-type Message interface {
-	// Name returns a string representation of the message type. Examples include
-	// "PUBLISH", "SUBSCRIBE", and others. This is statically defined for each of
-	// the message types and cannot be changed.
-	Name() string
-
-	// Desc returns a string description of the message type. For example, a
-	// CONNECT message would return "Client request to connect to Server." These
-	// descriptions are statically defined (copied from the MQTT spec) and cannot
-	// be changed.
-	Desc() string
-
-	// Type returns the MessageType of the Message. The retured value should be one
-	// of the constants defined for MessageType.
-	Type() MessageType
-
-	// PacketId returns the packet ID of the Message. The retured value is 0 if
-	// there's no packet ID for this message type. Otherwise non-0.
-	PacketId() uint16
-
-	// Encode writes the message bytes into the byte array from the argument. It
-	// returns the number of bytes encoded and whether there's any errors along
-	// the way. If there's any errors, then the byte slice and count should be
-	// considered invalid.
-	Encode([]byte) (int, error)
-
-	// Decode reads the bytes in the byte slice from the argument. It returns the
-	// total number of bytes decoded, and whether there's any errors during the
-	// process. The byte slice MUST NOT be modified during the duration of this
-	// message being available since the byte slice is internally stored for
-	// references.
-	Decode([]byte) (int, error)
-
-	Len() int
-}
-
-const (
-	// RESERVED is a reserved value and should be considered an invalid message type
-	RESERVED MessageType = iota
-
-	// CONNECT: Client to Server. Client request to connect to Server.
-	CONNECT
-
-	// CONNACK: Server to Client. Connect acknowledgement.
-	CONNACK
-
-	// PUBLISH: Client to Server, or Server to Client. Publish message.
-	PUBLISH
-
-	// PUBACK: Client to Server, or Server to Client. Publish acknowledgment for
-	// QoS 1 messages.
-	PUBACK
-
-	// PUBACK: Client to Server, or Server to Client. Publish received for QoS 2 messages.
-	// Assured delivery part 1.
-	PUBREC
-
-	// PUBREL: Client to Server, or Server to Client. Publish release for QoS 2 messages.
-	// Assured delivery part 1.
-	PUBREL
-
-	// PUBCOMP: Client to Server, or Server to Client. Publish complete for QoS 2 messages.
-	// Assured delivery part 3.
-	PUBCOMP
-
-	// SUBSCRIBE: Client to Server. Client subscribe request.
-	SUBSCRIBE
-
-	// SUBACK: Server to Client. Subscribe acknowledgement.
-	SUBACK
-
-	// UNSUBSCRIBE: Client to Server. Unsubscribe request.
-	UNSUBSCRIBE
-
-	// UNSUBACK: Server to Client. Unsubscribe acknowlegment.
-	UNSUBACK
-
-	// PINGREQ: Client to Server. PING request.
-	PINGREQ
-
-	// PINGRESP: Server to Client. PING response.
-	PINGRESP
-
-	// DISCONNECT: Client to Server. Client is disconnecting.
-	DISCONNECT
-
-	// RESERVED2 is a reserved value and should be considered an invalid message type.
-	RESERVED2
-)
-
-func (this MessageType) String() string {
-	return this.Name()
-}
-
-// Name returns the name of the message type. It should correspond to one of the
-// constant values defined for MessageType. It is statically defined and cannot
-// be changed.
-func (this MessageType) Name() string {
-	switch this {
-	case RESERVED:
-		return "RESERVED"
-	case CONNECT:
-		return "CONNECT"
-	case CONNACK:
-		return "CONNACK"
-	case PUBLISH:
-		return "PUBLISH"
-	case PUBACK:
-		return "PUBACK"
-	case PUBREC:
-		return "PUBREC"
-	case PUBREL:
-		return "PUBREL"
-	case PUBCOMP:
-		return "PUBCOMP"
-	case SUBSCRIBE:
-		return "SUBSCRIBE"
-	case SUBACK:
-		return "SUBACK"
-	case UNSUBSCRIBE:
-		return "UNSUBSCRIBE"
-	case UNSUBACK:
-		return "UNSUBACK"
-	case PINGREQ:
-		return "PINGREQ"
-	case PINGRESP:
-		return "PINGRESP"
-	case DISCONNECT:
-		return "DISCONNECT"
-	case RESERVED2:
-		return "RESERVED2"
-	}
-
-	return "UNKNOWN"
-}
-
-// Desc returns the description of the message type. It is statically defined (copied
-// from MQTT spec) and cannot be changed.
-func (this MessageType) Desc() string {
-	switch this {
-	case RESERVED:
-		return "Reserved"
-	case CONNECT:
-		return "Client request to connect to Server"
-	case CONNACK:
-		return "Connect acknowledgement"
-	case PUBLISH:
-		return "Publish message"
-	case PUBACK:
-		return "Publish acknowledgement"
-	case PUBREC:
-		return "Publish received (assured delivery part 1)"
-	case PUBREL:
-		return "Publish release (assured delivery part 2)"
-	case PUBCOMP:
-		return "Publish complete (assured delivery part 3)"
-	case SUBSCRIBE:
-		return "Client subscribe request"
-	case SUBACK:
-		return "Subscribe acknowledgement"
-	case UNSUBSCRIBE:
-		return "Unsubscribe request"
-	case UNSUBACK:
-		return "Unsubscribe acknowledgement"
-	case PINGREQ:
-		return "PING request"
-	case PINGRESP:
-		return "PING response"
-	case DISCONNECT:
-		return "Client is disconnecting"
-	case RESERVED2:
-		return "Reserved"
-	}
-
-	return "UNKNOWN"
-}
-
-// DefaultFlags returns the default flag values for the message type, as defined by
-// the MQTT spec.
-func (this MessageType) DefaultFlags() byte {
-	switch this {
-	case RESERVED:
-		return 0
-	case CONNECT:
-		return 0
-	case CONNACK:
-		return 0
-	case PUBLISH:
-		return 0
-	case PUBACK:
-		return 0
-	case PUBREC:
-		return 0
-	case PUBREL:
-		return 2
-	case PUBCOMP:
-		return 0
-	case SUBSCRIBE:
-		return 2
-	case SUBACK:
-		return 0
-	case UNSUBSCRIBE:
-		return 2
-	case UNSUBACK:
-		return 0
-	case PINGREQ:
-		return 0
-	case PINGRESP:
-		return 0
-	case DISCONNECT:
-		return 0
-	case RESERVED2:
-		return 0
-	}
-
-	return 0
-}
-
-// New creates a new message based on the message type. It is a shortcut to call
-// one of the New*Message functions. If an error is returned then the message type
-// is invalid.
-func (this MessageType) New() (Message, error) {
-	switch this {
-	case CONNECT:
-		return NewConnectMessage(), nil
-	case CONNACK:
-		return NewConnackMessage(), nil
-	case PUBLISH:
-		return NewPublishMessage(), nil
-	case PUBACK:
-		return NewPubackMessage(), nil
-	case PUBREC:
-		return NewPubrecMessage(), nil
-	case PUBREL:
-		return NewPubrelMessage(), nil
-	case PUBCOMP:
-		return NewPubcompMessage(), nil
-	case SUBSCRIBE:
-		return NewSubscribeMessage(), nil
-	case SUBACK:
-		return NewSubackMessage(), nil
-	case UNSUBSCRIBE:
-		return NewUnsubscribeMessage(), nil
-	case UNSUBACK:
-		return NewUnsubackMessage(), nil
-	case PINGREQ:
-		return NewPingreqMessage(), nil
-	case PINGRESP:
-		return NewPingrespMessage(), nil
-	case DISCONNECT:
-		return NewDisconnectMessage(), nil
-	}
-
-	return nil, fmt.Errorf("msgtype/NewMessage: Invalid message type %d", this)
-}
-
-// Valid returns a boolean indicating whether the message type is valid or not.
-func (this MessageType) Valid() bool {
-	return this > RESERVED && this < RESERVED2
-}
-
-// ValidTopic checks the topic, which is a slice of bytes, to see if it's valid. Topic is
-// considered valid if it's longer than 0 bytes, and doesn't contain any wildcard characters
-// such as + and #.
-func ValidTopic(topic []byte) bool {
-	return len(topic) > 0 && bytes.IndexByte(topic, '#') == -1 && bytes.IndexByte(topic, '+') == -1
-}
-
-// ValidQos checks the QoS value to see if it's valid. Valid QoS are QosAtMostOnce,
-// QosAtLeastonce, and QosExactlyOnce.
-func ValidQos(qos byte) bool {
-	return qos == QosAtMostOnce || qos == QosAtLeastOnce || qos == QosExactlyOnce
-}
-
-// ValidVersion checks to see if the version is valid. Current supported versions include 0x3 and 0x4.
-func ValidVersion(v byte) bool {
-	_, ok := SupportedVersions[v]
-	return ok
-}
-
-// ValidConnackError checks to see if the error is a Connack Error or not
-func ValidConnackError(err error) bool {
-	return err == ErrInvalidProtocolVersion || err == ErrIdentifierRejected ||
-		err == ErrServerUnavailable || err == ErrBadUsernameOrPassword || err == ErrNotAuthorized
-}
-
-func ValidConnackErrorEx(err error) (bool, ConnackCode) {
-	if err == ErrInvalidProtocolVersion {
-		return true, ErrInvalidProtocolVersion
-	}
-	if err == ErrIdentifierRejected {
-		return true, ErrIdentifierRejected
-	}
-	if err == ErrServerUnavailable {
-		return true, ErrServerUnavailable
-	}
-	if err == ErrBadUsernameOrPassword {
-		return true, ErrBadUsernameOrPassword
-	}
-	if err == ErrNotAuthorized {
-		return true, ErrNotAuthorized
-	}
-	return false, ConnectionAccepted
-
-}
-
-// Read length prefixed bytes
-func readLPBytes(buf []byte) ([]byte, int, error) {
-	if len(buf) < 2 {
-		return nil, 0, fmt.Errorf("utils/readLPBytes: Insufficient buffer size. Expecting %d, got %d.", 2, len(buf))
-	}
-
-	n, total := 0, 0
-
-	n = int(binary.BigEndian.Uint16(buf))
-	total += 2
-
-	if len(buf) < n {
-		return nil, total, fmt.Errorf("utils/readLPBytes: Insufficient buffer size. Expecting %d, got %d.", n, len(buf))
-	}
-
-	total += n
-
-	return buf[2:total], total, nil
-}
-
-// Write length prefixed bytes
-func writeLPBytes(buf []byte, b []byte) (int, error) {
-	total, n := 0, len(b)
-
-	if n > int(maxLPString) {
-		return 0, fmt.Errorf("utils/writeLPBytes: Length (%d) greater than %d bytes.", n, maxLPString)
-	}
-
-	if len(buf) < 2+n {
-		return 0, fmt.Errorf("utils/writeLPBytes: Insufficient buffer size. Expecting %d, got %d.", 2+n, len(buf))
-	}
-
-	binary.BigEndian.PutUint16(buf, uint16(n))
-	total += 2
-
-	copy(buf[total:], b)
-	total += n
-
-	return total, nil
-}

lib/message/message_test.go

@@ -1,178 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-var (
-	lpstrings []string = []string{
-		"this is a test",
-		"hope it succeeds",
-		"but just in case",
-		"send me your millions",
-		"",
-	}
-
-	lpstringBytes []byte = []byte{
-		0x0, 0xe, 't', 'h', 'i', 's', ' ', 'i', 's', ' ', 'a', ' ', 't', 'e', 's', 't',
-		0x0, 0x10, 'h', 'o', 'p', 'e', ' ', 'i', 't', ' ', 's', 'u', 'c', 'c', 'e', 'e', 'd', 's',
-		0x0, 0x10, 'b', 'u', 't', ' ', 'j', 'u', 's', 't', ' ', 'i', 'n', ' ', 'c', 'a', 's', 'e',
-		0x0, 0x15, 's', 'e', 'n', 'd', ' ', 'm', 'e', ' ', 'y', 'o', 'u', 'r', ' ', 'm', 'i', 'l', 'l', 'i', 'o', 'n', 's',
-		0x0, 0x0,
-	}
-
-	msgBytes []byte = []byte{
-		byte(CONNECT << 4),
-		60,
-		0, // Length MSB (0)
-		4, // Length LSB (4)
-		'M', 'Q', 'T', 'T',
-		4,   // Protocol level 4
-		206, // connect flags 11001110, will QoS = 01
-		0,   // Keep Alive MSB (0)
-		10,  // Keep Alive LSB (10)
-		0,   // Client ID MSB (0)
-		7,   // Client ID LSB (7)
-		's', 'u', 'r', 'g', 'e', 'm', 'q',
-		0, // Will Topic MSB (0)
-		4, // Will Topic LSB (4)
-		'w', 'i', 'l', 'l',
-		0,  // Will Message MSB (0)
-		12, // Will Message LSB (12)
-		's', 'e', 'n', 'd', ' ', 'm', 'e', ' ', 'h', 'o', 'm', 'e',
-		0, // Username ID MSB (0)
-		7, // Username ID LSB (7)
-		's', 'u', 'r', 'g', 'e', 'm', 'q',
-		0,  // Password ID MSB (0)
-		10, // Password ID LSB (10)
-		'v', 'e', 'r', 'y', 's', 'e', 'c', 'r', 'e', 't',
-	}
-)
-
-func TestReadLPBytes(t *testing.T) {
-	total := 0
-
-	for _, str := range lpstrings {
-		b, n, err := readLPBytes(lpstringBytes[total:])
-
-		require.NoError(t, err)
-		require.Equal(t, str, string(b))
-		require.Equal(t, len(str)+2, n)
-
-		total += n
-	}
-}
-
-func TestWriteLPBytes(t *testing.T) {
-	total := 0
-	buf := make([]byte, 1000)
-
-	for _, str := range lpstrings {
-		n, err := writeLPBytes(buf[total:], []byte(str))
-
-		require.NoError(t, err)
-		require.Equal(t, 2+len(str), n)
-
-		total += n
-	}
-
-	require.Equal(t, lpstringBytes, buf[:total])
-}
-
-func TestMessageTypes(t *testing.T) {
-	if CONNECT != 1 ||
-		CONNACK != 2 ||
-		PUBLISH != 3 ||
-		PUBACK != 4 ||
-		PUBREC != 5 ||
-		PUBREL != 6 ||
-		PUBCOMP != 7 ||
-		SUBSCRIBE != 8 ||
-		SUBACK != 9 ||
-		UNSUBSCRIBE != 10 ||
-		UNSUBACK != 11 ||
-		PINGREQ != 12 ||
-		PINGRESP != 13 ||
-		DISCONNECT != 14 {
-
-		t.Errorf("Message types have invalid code")
-	}
-}
-
-func TestQosCodes(t *testing.T) {
-	if QosAtMostOnce != 0 || QosAtLeastOnce != 1 || QosExactlyOnce != 2 {
-		t.Errorf("QOS codes invalid")
-	}
-}
-
-func TestConnackReturnCodes(t *testing.T) {
-	require.Equal(t, ErrInvalidProtocolVersion.Error(), ConnackCode(1).Error(), "Incorrect ConnackCode error value.")
-
-	require.Equal(t, ErrIdentifierRejected.Error(), ConnackCode(2).Error(), "Incorrect ConnackCode error value.")
-
-	require.Equal(t, ErrServerUnavailable.Error(), ConnackCode(3).Error(), "Incorrect ConnackCode error value.")
-
-	require.Equal(t, ErrBadUsernameOrPassword.Error(), ConnackCode(4).Error(), "Incorrect ConnackCode error value.")
-
-	require.Equal(t, ErrNotAuthorized.Error(), ConnackCode(5).Error(), "Incorrect ConnackCode error value.")
-}
-
-func TestFixedHeaderFlags(t *testing.T) {
-	type detail struct {
-		name  string
-		flags byte
-	}
-
-	details := map[MessageType]detail{
-		RESERVED:    detail{"RESERVED", 0},
-		CONNECT:     detail{"CONNECT", 0},
-		CONNACK:     detail{"CONNACK", 0},
-		PUBLISH:     detail{"PUBLISH", 0},
-		PUBACK:      detail{"PUBACK", 0},
-		PUBREC:      detail{"PUBREC", 0},
-		PUBREL:      detail{"PUBREL", 2},
-		PUBCOMP:     detail{"PUBCOMP", 0},
-		SUBSCRIBE:   detail{"SUBSCRIBE", 2},
-		SUBACK:      detail{"SUBACK", 0},
-		UNSUBSCRIBE: detail{"UNSUBSCRIBE", 2},
-		UNSUBACK:    detail{"UNSUBACK", 0},
-		PINGREQ:     detail{"PINGREQ", 0},
-		PINGRESP:    detail{"PINGRESP", 0},
-		DISCONNECT:  detail{"DISCONNECT", 0},
-		RESERVED2:   detail{"RESERVED2", 0},
-	}
-
-	for m, d := range details {
-		if m.Name() != d.name {
-			t.Errorf("Name mismatch. Expecting %s, got %s.", d.name, m.Name())
-		}
-
-		if m.DefaultFlags() != d.flags {
-			t.Errorf("Flag mismatch for %s. Expecting %d, got %d.", m.Name(), d.flags, m.DefaultFlags())
-		}
-	}
-}
-
-func TestSupportedVersions(t *testing.T) {
-	for k, v := range SupportedVersions {
-		if k == 0x03 && v != "MQIsdp" {
-			t.Errorf("Protocol version and name mismatch. Expect %s, got %s.", "MQIsdp", v)
-		}
-	}
-}

lib/message/ping_test.go

@@ -1,135 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TestPingreqMessageDecode(t *testing.T) {
-	msgBytes := []byte{
-		byte(PINGREQ << 4),
-		0,
-	}
-
-	msg := NewPingreqMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, PINGREQ, msg.Type(), "Error decoding message.")
-}
-
-func TestPingreqMessageEncode(t *testing.T) {
-	msgBytes := []byte{
-		byte(PINGREQ << 4),
-		0,
-	}
-
-	msg := NewPingreqMessage()
-
-	dst := make([]byte, 10)
-	n, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n], "Error decoding message.")
-}
-
-func TestPingrespMessageDecode(t *testing.T) {
-	msgBytes := []byte{
-		byte(PINGRESP << 4),
-		0,
-	}
-
-	msg := NewPingrespMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, PINGRESP, msg.Type(), "Error decoding message.")
-}
-
-func TestPingrespMessageEncode(t *testing.T) {
-	msgBytes := []byte{
-		byte(PINGRESP << 4),
-		0,
-	}
-
-	msg := NewPingrespMessage()
-
-	dst := make([]byte, 10)
-	n, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n], "Error decoding message.")
-}
-
-// test to ensure encoding and decoding are the same
-// decode, encode, and decode again
-func TestPingreqDecodeEncodeEquiv(t *testing.T) {
-	msgBytes := []byte{
-		byte(PINGREQ << 4),
-		0,
-	}
-
-	msg := NewPingreqMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-
-	dst := make([]byte, 100)
-	n2, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n2, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n2], "Error decoding message.")
-
-	n3, err := msg.Decode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n3, "Error decoding message.")
-}
-
-// test to ensure encoding and decoding are the same
-// decode, encode, and decode again
-func TestPingrespDecodeEncodeEquiv(t *testing.T) {
-	msgBytes := []byte{
-		byte(PINGRESP << 4),
-		0,
-	}
-
-	msg := NewPingrespMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-
-	dst := make([]byte, 100)
-	n2, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n2, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n2], "Error decoding message.")
-
-	n3, err := msg.Decode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n3, "Error decoding message.")
-}

lib/message/pingreq.go

@@ -1,34 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-// The PINGREQ Packet is sent from a Client to the Server. It can be used to:
-// 1. Indicate to the Server that the Client is alive in the absence of any other
-//    Control Packets being sent from the Client to the Server.
-// 2. Request that the Server responds to confirm that it is alive.
-// 3. Exercise the network to indicate that the Network Connection is active.
-type PingreqMessage struct {
-	DisconnectMessage
-}
-
-var _ Message = (*PingreqMessage)(nil)
-
-// NewPingreqMessage creates a new PINGREQ message.
-func NewPingreqMessage() *PingreqMessage {
-	msg := &PingreqMessage{}
-	msg.SetType(PINGREQ)
-
-	return msg
-}

lib/message/pingresp.go

@@ -1,31 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-// A PINGRESP Packet is sent by the Server to the Client in response to a PINGREQ
-// Packet. It indicates that the Server is alive.
-type PingrespMessage struct {
-	DisconnectMessage
-}
-
-var _ Message = (*PingrespMessage)(nil)
-
-// NewPingrespMessage creates a new PINGRESP message.
-func NewPingrespMessage() *PingrespMessage {
-	msg := &PingrespMessage{}
-	msg.SetType(PINGRESP)
-
-	return msg
-}

lib/message/puback.go

@@ -1,109 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-import "fmt"
-
-// A PUBACK Packet is the response to a PUBLISH Packet with QoS level 1.
-type PubackMessage struct {
-	header
-}
-
-var _ Message = (*PubackMessage)(nil)
-
-// NewPubackMessage creates a new PUBACK message.
-func NewPubackMessage() *PubackMessage {
-	msg := &PubackMessage{}
-	msg.SetType(PUBACK)
-
-	return msg
-}
-
-func (this PubackMessage) String() string {
-	return fmt.Sprintf("%s, Packet ID=%d", this.header, this.packetId)
-}
-
-func (this *PubackMessage) Len() int {
-	if !this.dirty {
-		return len(this.dbuf)
-	}
-
-	ml := this.msglen()
-
-	if err := this.SetRemainingLength(int32(ml)); err != nil {
-		return 0
-	}
-
-	return this.header.msglen() + ml
-}
-
-func (this *PubackMessage) Decode(src []byte) (int, error) {
-	total := 0
-
-	n, err := this.header.decode(src[total:])
-	total += n
-	if err != nil {
-		return total, err
-	}
-
-	//this.packetId = binary.BigEndian.Uint16(src[total:])
-	this.packetId = src[total : total+2]
-	total += 2
-
-	this.dirty = false
-
-	return total, nil
-}
-
-func (this *PubackMessage) Encode(dst []byte) (int, error) {
-	if !this.dirty {
-		if len(dst) < len(this.dbuf) {
-			return 0, fmt.Errorf("puback/Encode: Insufficient buffer size. Expecting %d, got %d.", len(this.dbuf), len(dst))
-		}
-
-		return copy(dst, this.dbuf), nil
-	}
-
-	hl := this.header.msglen()
-	ml := this.msglen()
-
-	if len(dst) < hl+ml {
-		return 0, fmt.Errorf("puback/Encode: Insufficient buffer size. Expecting %d, got %d.", hl+ml, len(dst))
-	}
-
-	if err := this.SetRemainingLength(int32(ml)); err != nil {
-		return 0, err
-	}
-
-	total := 0
-
-	n, err := this.header.encode(dst[total:])
-	total += n
-	if err != nil {
-		return total, err
-	}
-
-	if copy(dst[total:total+2], this.packetId) != 2 {
-		dst[total], dst[total+1] = 0, 0
-	}
-	total += 2
-
-	return total, nil
-}
-
-func (this *PubackMessage) msglen() int {
-	// packet ID
-	return 2
-}

lib/message/puback_test.go

@@ -1,108 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TestPubackMessageFields(t *testing.T) {
-	msg := NewPubackMessage()
-
-	msg.SetPacketId(100)
-
-	require.Equal(t, 100, int(msg.PacketId()))
-}
-
-func TestPubackMessageDecode(t *testing.T) {
-	msgBytes := []byte{
-		byte(PUBACK << 4),
-		2,
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-	}
-
-	msg := NewPubackMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, PUBACK, msg.Type(), "Error decoding message.")
-	require.Equal(t, 7, int(msg.PacketId()), "Error decoding message.")
-}
-
-// test insufficient bytes
-func TestPubackMessageDecode2(t *testing.T) {
-	msgBytes := []byte{
-		byte(PUBACK << 4),
-		2,
-		7, // packet ID LSB (7)
-	}
-
-	msg := NewPubackMessage()
-	_, err := msg.Decode(msgBytes)
-
-	require.Error(t, err)
-}
-
-func TestPubackMessageEncode(t *testing.T) {
-	msgBytes := []byte{
-		byte(PUBACK << 4),
-		2,
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-	}
-
-	msg := NewPubackMessage()
-	msg.SetPacketId(7)
-
-	dst := make([]byte, 10)
-	n, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n], "Error decoding message.")
-}
-
-// test to ensure encoding and decoding are the same
-// decode, encode, and decode again
-func TestPubackDecodeEncodeEquiv(t *testing.T) {
-	msgBytes := []byte{
-		byte(PUBACK << 4),
-		2,
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-	}
-
-	msg := NewPubackMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-
-	dst := make([]byte, 100)
-	n2, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n2, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n2], "Error decoding message.")
-
-	n3, err := msg.Decode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n3, "Error decoding message.")
-}

lib/message/pubcomp.go

@@ -1,31 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-// The PUBCOMP Packet is the response to a PUBREL Packet. It is the fourth and
-// final packet of the QoS 2 protocol exchange.
-type PubcompMessage struct {
-	PubackMessage
-}
-
-var _ Message = (*PubcompMessage)(nil)
-
-// NewPubcompMessage creates a new PUBCOMP message.
-func NewPubcompMessage() *PubcompMessage {
-	msg := &PubcompMessage{}
-	msg.SetType(PUBCOMP)
-
-	return msg
-}

lib/message/pubcomp_test.go

@@ -1,108 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TestPubcompMessageFields(t *testing.T) {
-	msg := NewPubcompMessage()
-
-	msg.SetPacketId(100)
-
-	require.Equal(t, 100, int(msg.PacketId()))
-}
-
-func TestPubcompMessageDecode(t *testing.T) {
-	msgBytes := []byte{
-		byte(PUBCOMP << 4),
-		2,
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-	}
-
-	msg := NewPubcompMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, PUBCOMP, msg.Type(), "Error decoding message.")
-	require.Equal(t, 7, int(msg.PacketId()), "Error decoding message.")
-}
-
-// test insufficient bytes
-func TestPubcompMessageDecode2(t *testing.T) {
-	msgBytes := []byte{
-		byte(PUBCOMP << 4),
-		2,
-		7, // packet ID LSB (7)
-	}
-
-	msg := NewPubcompMessage()
-	_, err := msg.Decode(msgBytes)
-
-	require.Error(t, err)
-}
-
-func TestPubcompMessageEncode(t *testing.T) {
-	msgBytes := []byte{
-		byte(PUBCOMP << 4),
-		2,
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-	}
-
-	msg := NewPubcompMessage()
-	msg.SetPacketId(7)
-
-	dst := make([]byte, 10)
-	n, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n], "Error decoding message.")
-}
-
-// test to ensure encoding and decoding are the same
-// decode, encode, and decode again
-func TestPubcompDecodeEncodeEquiv(t *testing.T) {
-	msgBytes := []byte{
-		byte(PUBCOMP << 4),
-		2,
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-	}
-
-	msg := NewPubcompMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-
-	dst := make([]byte, 100)
-	n2, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n2, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n2], "Error decoding message.")
-
-	n3, err := msg.Decode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n3, "Error decoding message.")
-}

lib/message/publish.go

@@ -1,250 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-import (
-	"fmt"
-	"sync/atomic"
-)
-
-// A PUBLISH Control Packet is sent from a Client to a Server or from Server to a Client
-// to transport an Application Message.
-type PublishMessage struct {
-	header
-
-	topic   []byte
-	payload []byte
-}
-
-var _ Message = (*PublishMessage)(nil)
-
-// NewPublishMessage creates a new PUBLISH message.
-func NewPublishMessage() *PublishMessage {
-	msg := &PublishMessage{}
-	msg.SetType(PUBLISH)
-
-	return msg
-}
-
-func (this PublishMessage) String() string {
-	return fmt.Sprintf("%s, Topic=%q, Packet ID=%d, QoS=%d, Retained=%t, Dup=%t, Payload=%v",
-		this.header, this.topic, this.packetId, this.QoS(), this.Retain(), this.Dup(), this.payload)
-}
-
-// Dup returns the value specifying the duplicate delivery of a PUBLISH Control Packet.
-// If the DUP flag is set to 0, it indicates that this is the first occasion that the
-// Client or Server has attempted to send this MQTT PUBLISH Packet. If the DUP flag is
-// set to 1, it indicates that this might be re-delivery of an earlier attempt to send
-// the Packet.
-func (this *PublishMessage) Dup() bool {
-	return ((this.Flags() >> 3) & 0x1) == 1
-}
-
-// SetDup sets the value specifying the duplicate delivery of a PUBLISH Control Packet.
-func (this *PublishMessage) SetDup(v bool) {
-	if v {
-		this.mtypeflags[0] |= 0x8 // 00001000
-	} else {
-		this.mtypeflags[0] &= 247 // 11110111
-	}
-}
-
-// Retain returns the value of the RETAIN flag. This flag is only used on the PUBLISH
-// Packet. If the RETAIN flag is set to 1, in a PUBLISH Packet sent by a Client to a
-// Server, the Server MUST store the Application Message and its QoS, so that it can be
-// delivered to future subscribers whose subscriptions match its topic name.
-func (this *PublishMessage) Retain() bool {
-	return (this.Flags() & 0x1) == 1
-}
-
-// SetRetain sets the value of the RETAIN flag.
-func (this *PublishMessage) SetRetain(v bool) {
-	if v {
-		this.mtypeflags[0] |= 0x1 // 00000001
-	} else {
-		this.mtypeflags[0] &= 254 // 11111110
-	}
-}
-
-// QoS returns the field that indicates the level of assurance for delivery of an
-// Application Message. The values are QosAtMostOnce, QosAtLeastOnce and QosExactlyOnce.
-func (this *PublishMessage) QoS() byte {
-	return (this.Flags() >> 1) & 0x3
-}
-
-// SetQoS sets the field that indicates the level of assurance for delivery of an
-// Application Message. The values are QosAtMostOnce, QosAtLeastOnce and QosExactlyOnce.
-// An error is returned if the value is not one of these.
-func (this *PublishMessage) SetQoS(v byte) error {
-	if v != 0x0 && v != 0x1 && v != 0x2 {
-		return fmt.Errorf("publish/SetQoS: Invalid QoS %d.", v)
-	}
-
-	this.mtypeflags[0] = (this.mtypeflags[0] & 249) | (v << 1) // 249 = 11111001
-
-	return nil
-}
-
-// Topic returns the the topic name that identifies the information channel to which
-// payload data is published.
-func (this *PublishMessage) Topic() []byte {
-	return this.topic
-}
-
-// SetTopic sets the the topic name that identifies the information channel to which
-// payload data is published. An error is returned if ValidTopic() is falbase.
-func (this *PublishMessage) SetTopic(v []byte) error {
-	if !ValidTopic(v) {
-		return fmt.Errorf("publish/SetTopic: Invalid topic name (%s). Must not be empty or contain wildcard characters", string(v))
-	}
-
-	this.topic = v
-	this.dirty = true
-
-	return nil
-}
-
-// Payload returns the application message that's part of the PUBLISH message.
-func (this *PublishMessage) Payload() []byte {
-	return this.payload
-}
-
-// SetPayload sets the application message that's part of the PUBLISH message.
-func (this *PublishMessage) SetPayload(v []byte) {
-	this.payload = v
-	this.dirty = true
-}
-
-func (this *PublishMessage) Len() int {
-	if !this.dirty {
-		return len(this.dbuf)
-	}
-
-	ml := this.msglen()
-
-	if err := this.SetRemainingLength(int32(ml)); err != nil {
-		return 0
-	}
-
-	return this.header.msglen() + ml
-}
-
-func (this *PublishMessage) Decode(src []byte) (int, error) {
-	total := 0
-
-	hn, err := this.header.decode(src[total:])
-	total += hn
-	if err != nil {
-		return total, err
-	}
-
-	n := 0
-
-	this.topic, n, err = readLPBytes(src[total:])
-	total += n
-	if err != nil {
-		return total, err
-	}
-
-	if !ValidTopic(this.topic) {
-		return total, fmt.Errorf("publish/Decode: Invalid topic name (%s). Must not be empty or contain wildcard characters", string(this.topic))
-	}
-
-	// The packet identifier field is only present in the PUBLISH packets where the
-	// QoS level is 1 or 2
-	if this.QoS() != 0 {
-		//this.packetId = binary.BigEndian.Uint16(src[total:])
-		this.packetId = src[total : total+2]
-		total += 2
-	}
-
-	l := int(this.remlen) - (total - hn)
-	this.payload = src[total : total+l]
-	total += len(this.payload)
-
-	this.dirty = false
-
-	return total, nil
-}
-
-func (this *PublishMessage) Encode(dst []byte) (int, error) {
-	if !this.dirty {
-		if len(dst) < len(this.dbuf) {
-			return 0, fmt.Errorf("publish/Encode: Insufficient buffer size. Expecting %d, got %d.", len(this.dbuf), len(dst))
-		}
-
-		return copy(dst, this.dbuf), nil
-	}
-
-	if len(this.topic) == 0 {
-		return 0, fmt.Errorf("publish/Encode: Topic name is empty.")
-	}
-
-	if len(this.payload) == 0 {
-		return 0, fmt.Errorf("publish/Encode: Payload is empty.")
-	}
-
-	ml := this.msglen()
-
-	if err := this.SetRemainingLength(int32(ml)); err != nil {
-		return 0, err
-	}
-
-	hl := this.header.msglen()
-
-	if len(dst) < hl+ml {
-		return 0, fmt.Errorf("publish/Encode: Insufficient buffer size. Expecting %d, got %d.", hl+ml, len(dst))
-	}
-
-	total := 0
-
-	n, err := this.header.encode(dst[total:])
-	total += n
-	if err != nil {
-		return total, err
-	}
-
-	n, err = writeLPBytes(dst[total:], this.topic)
-	total += n
-	if err != nil {
-		return total, err
-	}
-
-	// The packet identifier field is only present in the PUBLISH packets where the QoS level is 1 or 2
-	if this.QoS() != 0 {
-		if this.PacketId() == 0 {
-			this.SetPacketId(uint16(atomic.AddUint64(&gPacketId, 1) & 0xffff))
-			//this.packetId = uint16(atomic.AddUint64(&gPacketId, 1) & 0xffff)
-		}
-
-		n = copy(dst[total:], this.packetId)
-		//binary.BigEndian.PutUint16(dst[total:], this.packetId)
-		total += n
-	}
-
-	copy(dst[total:], this.payload)
-	total += len(this.payload)
-
-	return total, nil
-}
-
-func (this *PublishMessage) msglen() int {
-	total := 2 + len(this.topic) + len(this.payload)
-	if this.QoS() != 0 {
-		total += 2
-	}
-
-	return total
-}

lib/message/publish_test.go

@@ -1,281 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TestPublishMessageHeaderFields(t *testing.T) {
-	msg := NewPublishMessage()
-	msg.mtypeflags[0] |= 11
-
-	require.True(t, msg.Dup(), "Incorrect DUP flag.")
-	require.True(t, msg.Retain(), "Incorrect RETAIN flag.")
-	require.Equal(t, 1, int(msg.QoS()), "Incorrect QoS.")
-
-	msg.SetDup(false)
-
-	require.False(t, msg.Dup(), "Incorrect DUP flag.")
-
-	msg.SetRetain(false)
-
-	require.False(t, msg.Retain(), "Incorrect RETAIN flag.")
-
-	err := msg.SetQoS(2)
-
-	require.NoError(t, err, "Error setting QoS.")
-	require.Equal(t, 2, int(msg.QoS()), "Incorrect QoS.")
-
-	err = msg.SetQoS(3)
-
-	require.Error(t, err)
-
-	err = msg.SetQoS(0)
-
-	require.NoError(t, err, "Error setting QoS.")
-	require.Equal(t, 0, int(msg.QoS()), "Incorrect QoS.")
-
-	msg.SetDup(true)
-
-	require.True(t, msg.Dup(), "Incorrect DUP flag.")
-
-	msg.SetRetain(true)
-
-	require.True(t, msg.Retain(), "Incorrect RETAIN flag.")
-}
-
-func TestPublishMessageFields(t *testing.T) {
-	msg := NewPublishMessage()
-
-	msg.SetTopic([]byte("coolstuff"))
-
-	require.Equal(t, "coolstuff", string(msg.Topic()), "Error setting message topic.")
-
-	err := msg.SetTopic([]byte("coolstuff/#"))
-
-	require.Error(t, err)
-
-	msg.SetPacketId(100)
-
-	require.Equal(t, 100, int(msg.PacketId()), "Error setting acket ID.")
-
-	msg.SetPayload([]byte("this is a payload to be sent"))
-
-	require.Equal(t, []byte("this is a payload to be sent"), msg.Payload(), "Error setting payload.")
-}
-
-func TestPublishMessageDecode1(t *testing.T) {
-	msgBytes := []byte{
-		byte(PUBLISH<<4) | 2,
-		23,
-		0, // topic name MSB (0)
-		7, // topic name LSB (7)
-		's', 'u', 'r', 'g', 'e', 'm', 'q',
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-		's', 'e', 'n', 'd', ' ', 'm', 'e', ' ', 'h', 'o', 'm', 'e',
-	}
-
-	msg := NewPublishMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, 7, int(msg.PacketId()), "Error decoding message.")
-	require.Equal(t, "surgemq", string(msg.Topic()), "Error deocding topic name.")
-	require.Equal(t, []byte{'s', 'e', 'n', 'd', ' ', 'm', 'e', ' ', 'h', 'o', 'm', 'e'}, msg.Payload(), "Error deocding payload.")
-}
-
-// test insufficient bytes
-func TestPublishMessageDecode2(t *testing.T) {
-	msgBytes := []byte{
-		byte(PUBLISH<<4) | 2,
-		26,
-		0, // topic name MSB (0)
-		7, // topic name LSB (7)
-		's', 'u', 'r', 'g', 'e', 'm', 'q',
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-		's', 'e', 'n', 'd', ' ', 'm', 'e', ' ', 'h', 'o', 'm', 'e',
-	}
-
-	msg := NewPublishMessage()
-	_, err := msg.Decode(msgBytes)
-
-	require.Error(t, err)
-}
-
-// test qos = 0 and no client id
-func TestPublishMessageDecode3(t *testing.T) {
-	msgBytes := []byte{
-		byte(PUBLISH << 4),
-		21,
-		0, // topic name MSB (0)
-		7, // topic name LSB (7)
-		's', 'u', 'r', 'g', 'e', 'm', 'q',
-		's', 'e', 'n', 'd', ' ', 'm', 'e', ' ', 'h', 'o', 'm', 'e',
-	}
-
-	msg := NewPublishMessage()
-	_, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-}
-
-func TestPublishMessageEncode(t *testing.T) {
-	msgBytes := []byte{
-		byte(PUBLISH<<4) | 2,
-		23,
-		0, // topic name MSB (0)
-		7, // topic name LSB (7)
-		's', 'u', 'r', 'g', 'e', 'm', 'q',
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-		's', 'e', 'n', 'd', ' ', 'm', 'e', ' ', 'h', 'o', 'm', 'e',
-	}
-
-	msg := NewPublishMessage()
-	msg.SetTopic([]byte("surgemq"))
-	msg.SetQoS(1)
-	msg.SetPacketId(7)
-	msg.SetPayload([]byte{'s', 'e', 'n', 'd', ' ', 'm', 'e', ' ', 'h', 'o', 'm', 'e'})
-
-	dst := make([]byte, 100)
-	n, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n], "Error decoding message.")
-}
-
-// test empty topic name
-func TestPublishMessageEncode2(t *testing.T) {
-	msg := NewPublishMessage()
-	msg.SetTopic([]byte(""))
-	msg.SetPacketId(7)
-	msg.SetPayload([]byte{'s', 'e', 'n', 'd', ' ', 'm', 'e', ' ', 'h', 'o', 'm', 'e'})
-
-	dst := make([]byte, 100)
-	_, err := msg.Encode(dst)
-	require.Error(t, err)
-}
-
-// test encoding qos = 0 and no packet id
-func TestPublishMessageEncode3(t *testing.T) {
-	msgBytes := []byte{
-		byte(PUBLISH << 4),
-		21,
-		0, // topic name MSB (0)
-		7, // topic name LSB (7)
-		's', 'u', 'r', 'g', 'e', 'm', 'q',
-		's', 'e', 'n', 'd', ' ', 'm', 'e', ' ', 'h', 'o', 'm', 'e',
-	}
-
-	msg := NewPublishMessage()
-	msg.SetTopic([]byte("surgemq"))
-	msg.SetQoS(0)
-	msg.SetPayload([]byte{'s', 'e', 'n', 'd', ' ', 'm', 'e', ' ', 'h', 'o', 'm', 'e'})
-
-	dst := make([]byte, 100)
-	n, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n], "Error decoding message.")
-}
-
-// test large message
-func TestPublishMessageEncode4(t *testing.T) {
-	msgBytes := []byte{
-		byte(PUBLISH << 4),
-		137,
-		8,
-		0, // topic name MSB (0)
-		7, // topic name LSB (7)
-		's', 'u', 'r', 'g', 'e', 'm', 'q',
-	}
-
-	payload := make([]byte, 1024)
-	msgBytes = append(msgBytes, payload...)
-
-	msg := NewPublishMessage()
-	msg.SetTopic([]byte("surgemq"))
-	msg.SetQoS(0)
-	msg.SetPayload(payload)
-
-	require.Equal(t, len(msgBytes), msg.Len())
-
-	dst := make([]byte, 1100)
-	n, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n], "Error decoding message.")
-}
-
-// test from github issue #2, @mrdg
-func TestPublishDecodeEncodeEquiv2(t *testing.T) {
-	msgBytes := []byte{50, 18, 0, 9, 103, 114, 101, 101, 116, 105, 110, 103, 115, 0, 1, 72, 101, 108, 108, 111}
-
-	msg := NewPublishMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-
-	dst := make([]byte, 100)
-	n2, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n2, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n], "Error decoding message.")
-}
-
-// test to ensure encoding and decoding are the same
-// decode, encode, and decode again
-func TestPublishDecodeEncodeEquiv(t *testing.T) {
-	msgBytes := []byte{
-		byte(PUBLISH<<4) | 2,
-		23,
-		0, // topic name MSB (0)
-		7, // topic name LSB (7)
-		's', 'u', 'r', 'g', 'e', 'm', 'q',
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-		's', 'e', 'n', 'd', ' ', 'm', 'e', ' ', 'h', 'o', 'm', 'e',
-	}
-
-	msg := NewPublishMessage()
-
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-
-	dst := make([]byte, 100)
-	n2, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n2, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n2], "Error decoding message.")
-
-	n3, err := msg.Decode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n3, "Error decoding message.")
-}

lib/message/pubrec.go

@@ -1,31 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-type PubrecMessage struct {
-	PubackMessage
-}
-
-// A PUBREC Packet is the response to a PUBLISH Packet with QoS 2. It is the second
-// packet of the QoS 2 protocol exchange.
-var _ Message = (*PubrecMessage)(nil)
-
-// NewPubrecMessage creates a new PUBREC message.
-func NewPubrecMessage() *PubrecMessage {
-	msg := &PubrecMessage{}
-	msg.SetType(PUBREC)
-
-	return msg
-}

lib/message/pubrec_test.go

@@ -1,108 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TestPubrecMessageFields(t *testing.T) {
-	msg := NewPubrecMessage()
-
-	msg.SetPacketId(100)
-
-	require.Equal(t, 100, int(msg.PacketId()))
-}
-
-func TestPubrecMessageDecode(t *testing.T) {
-	msgBytes := []byte{
-		byte(PUBREC << 4),
-		2,
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-	}
-
-	msg := NewPubrecMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, PUBREC, msg.Type(), "Error decoding message.")
-	require.Equal(t, 7, int(msg.PacketId()), "Error decoding message.")
-}
-
-// test insufficient bytes
-func TestPubrecMessageDecode2(t *testing.T) {
-	msgBytes := []byte{
-		byte(PUBREC << 4),
-		2,
-		7, // packet ID LSB (7)
-	}
-
-	msg := NewPubrecMessage()
-	_, err := msg.Decode(msgBytes)
-
-	require.Error(t, err)
-}
-
-func TestPubrecMessageEncode(t *testing.T) {
-	msgBytes := []byte{
-		byte(PUBREC << 4),
-		2,
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-	}
-
-	msg := NewPubrecMessage()
-	msg.SetPacketId(7)
-
-	dst := make([]byte, 10)
-	n, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n], "Error decoding message.")
-}
-
-// test to ensure encoding and decoding are the same
-// decode, encode, and decode again
-func TestPubrecDecodeEncodeEquiv(t *testing.T) {
-	msgBytes := []byte{
-		byte(PUBREC << 4),
-		2,
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-	}
-
-	msg := NewPubrecMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-
-	dst := make([]byte, 100)
-	n2, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n2, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n2], "Error decoding message.")
-
-	n3, err := msg.Decode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n3, "Error decoding message.")
-}

lib/message/pubrel.go

@@ -1,31 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-// A PUBREL Packet is the response to a PUBREC Packet. It is the third packet of the
-// QoS 2 protocol exchange.
-type PubrelMessage struct {
-	PubackMessage
-}
-
-var _ Message = (*PubrelMessage)(nil)
-
-// NewPubrelMessage creates a new PUBREL message.
-func NewPubrelMessage() *PubrelMessage {
-	msg := &PubrelMessage{}
-	msg.SetType(PUBREL)
-
-	return msg
-}

lib/message/pubrel_test.go

@@ -1,108 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TestPubrelMessageFields(t *testing.T) {
-	msg := NewPubrelMessage()
-
-	msg.SetPacketId(100)
-
-	require.Equal(t, 100, int(msg.PacketId()))
-}
-
-func TestPubrelMessageDecode(t *testing.T) {
-	msgBytes := []byte{
-		byte(PUBREL<<4) | 2,
-		2,
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-	}
-
-	msg := NewPubrelMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, PUBREL, msg.Type(), "Error decoding message.")
-	require.Equal(t, 7, int(msg.PacketId()), "Error decoding message.")
-}
-
-// test insufficient bytes
-func TestPubrelMessageDecode2(t *testing.T) {
-	msgBytes := []byte{
-		byte(PUBREL<<4) | 2,
-		2,
-		7, // packet ID LSB (7)
-	}
-
-	msg := NewPubrelMessage()
-	_, err := msg.Decode(msgBytes)
-
-	require.Error(t, err)
-}
-
-func TestPubrelMessageEncode(t *testing.T) {
-	msgBytes := []byte{
-		byte(PUBREL<<4) | 2,
-		2,
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-	}
-
-	msg := NewPubrelMessage()
-	msg.SetPacketId(7)
-
-	dst := make([]byte, 10)
-	n, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n], "Error decoding message.")
-}
-
-// test to ensure encoding and decoding are the same
-// decode, encode, and decode again
-func TestPubrelDecodeEncodeEquiv(t *testing.T) {
-	msgBytes := []byte{
-		byte(PUBREL<<4) | 2,
-		2,
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-	}
-
-	msg := NewPubrelMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-
-	dst := make([]byte, 100)
-	n2, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n2, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n2], "Error decoding message.")
-
-	n3, err := msg.Decode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n3, "Error decoding message.")
-}

lib/message/suback.go

@@ -1,160 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-import "fmt"
-
-// A SUBACK Packet is sent by the Server to the Client to confirm receipt and processing
-// of a SUBSCRIBE Packet.
-//
-// A SUBACK Packet contains a list of return codes, that specify the maximum QoS level
-// that was granted in each Subscription that was requested by the SUBSCRIBE.
-type SubackMessage struct {
-	header
-
-	returnCodes []byte
-}
-
-var _ Message = (*SubackMessage)(nil)
-
-// NewSubackMessage creates a new SUBACK message.
-func NewSubackMessage() *SubackMessage {
-	msg := &SubackMessage{}
-	msg.SetType(SUBACK)
-
-	return msg
-}
-
-// String returns a string representation of the message.
-func (this SubackMessage) String() string {
-	return fmt.Sprintf("%s, Packet ID=%d, Return Codes=%v", this.header, this.PacketId(), this.returnCodes)
-}
-
-// ReturnCodes returns the list of QoS returns from the subscriptions sent in the SUBSCRIBE message.
-func (this *SubackMessage) ReturnCodes() []byte {
-	return this.returnCodes
-}
-
-// AddReturnCodes sets the list of QoS returns from the subscriptions sent in the SUBSCRIBE message.
-// An error is returned if any of the QoS values are not valid.
-func (this *SubackMessage) AddReturnCodes(ret []byte) error {
-	for _, c := range ret {
-		if c != QosAtMostOnce && c != QosAtLeastOnce && c != QosExactlyOnce && c != QosFailure {
-			return fmt.Errorf("suback/AddReturnCode: Invalid return code %d. Must be 0, 1, 2, 0x80.", c)
-		}
-
-		this.returnCodes = append(this.returnCodes, c)
-	}
-
-	this.dirty = true
-
-	return nil
-}
-
-// AddReturnCode adds a single QoS return value.
-func (this *SubackMessage) AddReturnCode(ret byte) error {
-	return this.AddReturnCodes([]byte{ret})
-}
-
-func (this *SubackMessage) Len() int {
-	if !this.dirty {
-		return len(this.dbuf)
-	}
-
-	ml := this.msglen()
-
-	if err := this.SetRemainingLength(int32(ml)); err != nil {
-		return 0
-	}
-
-	return this.header.msglen() + ml
-}
-
-func (this *SubackMessage) Decode(src []byte) (int, error) {
-	total := 0
-
-	hn, err := this.header.decode(src[total:])
-	total += hn
-	if err != nil {
-		return total, err
-	}
-
-	//this.packetId = binary.BigEndian.Uint16(src[total:])
-	this.packetId = src[total : total+2]
-	total += 2
-
-	l := int(this.remlen) - (total - hn)
-	this.returnCodes = src[total : total+l]
-	total += len(this.returnCodes)
-
-	for i, code := range this.returnCodes {
-		if code != 0x00 && code != 0x01 && code != 0x02 && code != 0x80 {
-			return total, fmt.Errorf("suback/Decode: Invalid return code %d for topic %d", code, i)
-		}
-	}
-
-	this.dirty = false
-
-	return total, nil
-}
-
-func (this *SubackMessage) Encode(dst []byte) (int, error) {
-	if !this.dirty {
-		if len(dst) < len(this.dbuf) {
-			return 0, fmt.Errorf("suback/Encode: Insufficient buffer size. Expecting %d, got %d.", len(this.dbuf), len(dst))
-		}
-
-		return copy(dst, this.dbuf), nil
-	}
-
-	for i, code := range this.returnCodes {
-		if code != 0x00 && code != 0x01 && code != 0x02 && code != 0x80 {
-			return 0, fmt.Errorf("suback/Encode: Invalid return code %d for topic %d", code, i)
-		}
-	}
-
-	hl := this.header.msglen()
-	ml := this.msglen()
-
-	if len(dst) < hl+ml {
-		return 0, fmt.Errorf("suback/Encode: Insufficient buffer size. Expecting %d, got %d.", hl+ml, len(dst))
-	}
-
-	if err := this.SetRemainingLength(int32(ml)); err != nil {
-		return 0, err
-	}
-
-	total := 0
-
-	n, err := this.header.encode(dst[total:])
-	total += n
-	if err != nil {
-		return total, err
-	}
-
-	if copy(dst[total:total+2], this.packetId) != 2 {
-		dst[total], dst[total+1] = 0, 0
-	}
-	total += 2
-
-	copy(dst[total:], this.returnCodes)
-	total += len(this.returnCodes)
-
-	return total, nil
-}
-
-func (this *SubackMessage) msglen() int {
-	return 2 + len(this.returnCodes)
-}

lib/message/suback_test.go

@@ -1,134 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TestSubackMessageFields(t *testing.T) {
-	msg := NewSubackMessage()
-
-	msg.SetPacketId(100)
-	require.Equal(t, 100, int(msg.PacketId()), "Error setting packet ID.")
-
-	msg.AddReturnCode(1)
-	require.Equal(t, 1, len(msg.ReturnCodes()), "Error adding return code.")
-
-	err := msg.AddReturnCode(0x90)
-	require.Error(t, err)
-}
-
-func TestSubackMessageDecode(t *testing.T) {
-	msgBytes := []byte{
-		byte(SUBACK << 4),
-		6,
-		0,    // packet ID MSB (0)
-		7,    // packet ID LSB (7)
-		0,    // return code 1
-		1,    // return code 2
-		2,    // return code 3
-		0x80, // return code 4
-	}
-
-	msg := NewSubackMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, SUBACK, msg.Type(), "Error decoding message.")
-	require.Equal(t, 4, len(msg.ReturnCodes()), "Error adding return code.")
-}
-
-// test with wrong return code
-func TestSubackMessageDecode2(t *testing.T) {
-	msgBytes := []byte{
-		byte(SUBACK << 4),
-		6,
-		0,    // packet ID MSB (0)
-		7,    // packet ID LSB (7)
-		0,    // return code 1
-		1,    // return code 2
-		2,    // return code 3
-		0x81, // return code 4
-	}
-
-	msg := NewSubackMessage()
-	_, err := msg.Decode(msgBytes)
-
-	require.Error(t, err)
-}
-
-func TestSubackMessageEncode(t *testing.T) {
-	msgBytes := []byte{
-		byte(SUBACK << 4),
-		6,
-		0,    // packet ID MSB (0)
-		7,    // packet ID LSB (7)
-		0,    // return code 1
-		1,    // return code 2
-		2,    // return code 3
-		0x80, // return code 4
-	}
-
-	msg := NewSubackMessage()
-	msg.SetPacketId(7)
-	msg.AddReturnCode(0)
-	msg.AddReturnCode(1)
-	msg.AddReturnCode(2)
-	msg.AddReturnCode(0x80)
-
-	dst := make([]byte, 10)
-	n, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n], "Error decoding message.")
-}
-
-// test to ensure encoding and decoding are the same
-// decode, encode, and decode again
-func TestSubackDecodeEncodeEquiv(t *testing.T) {
-	msgBytes := []byte{
-		byte(SUBACK << 4),
-		6,
-		0,    // packet ID MSB (0)
-		7,    // packet ID LSB (7)
-		0,    // return code 1
-		1,    // return code 2
-		2,    // return code 3
-		0x80, // return code 4
-	}
-
-	msg := NewSubackMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-
-	dst := make([]byte, 100)
-	n2, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n2, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n2], "Error decoding message.")
-
-	n3, err := msg.Decode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n3, "Error decoding message.")
-}

lib/message/subscribe.go

@@ -1,253 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-import (
-	"bytes"
-	"fmt"
-	"sync/atomic"
-)
-
-// The SUBSCRIBE Packet is sent from the Client to the Server to create one or more
-// Subscriptions. Each Subscription registers a Client’s interest in one or more
-// Topics. The Server sends PUBLISH Packets to the Client in order to forward
-// Application Messages that were published to Topics that match these Subscriptions.
-// The SUBSCRIBE Packet also specifies (for each Subscription) the maximum QoS with
-// which the Server can send Application Messages to the Client.
-type SubscribeMessage struct {
-	header
-
-	topics [][]byte
-	qos    []byte
-}
-
-var _ Message = (*SubscribeMessage)(nil)
-
-// NewSubscribeMessage creates a new SUBSCRIBE message.
-func NewSubscribeMessage() *SubscribeMessage {
-	msg := &SubscribeMessage{}
-	msg.SetType(SUBSCRIBE)
-
-	return msg
-}
-
-func (this SubscribeMessage) String() string {
-	msgstr := fmt.Sprintf("%s, Packet ID=%d", this.header, this.PacketId())
-
-	for i, t := range this.topics {
-		msgstr = fmt.Sprintf("%s, Topic[%d]=%q/%d", msgstr, i, string(t), this.qos[i])
-	}
-
-	return msgstr
-}
-
-// Topics returns a list of topics sent by the Client.
-func (this *SubscribeMessage) Topics() [][]byte {
-	return this.topics
-}
-
-// AddTopic adds a single topic to the message, along with the corresponding QoS.
-// An error is returned if QoS is invalid.
-func (this *SubscribeMessage) AddTopic(topic []byte, qos byte) error {
-	if !ValidQos(qos) {
-		return fmt.Errorf("Invalid QoS %d", qos)
-	}
-
-	var i int
-	var t []byte
-	var found bool
-
-	for i, t = range this.topics {
-		if bytes.Equal(t, topic) {
-			found = true
-			break
-		}
-	}
-
-	if found {
-		this.qos[i] = qos
-		return nil
-	}
-
-	this.topics = append(this.topics, topic)
-	this.qos = append(this.qos, qos)
-	this.dirty = true
-
-	return nil
-}
-
-// RemoveTopic removes a single topic from the list of existing ones in the message.
-// If topic does not exist it just does nothing.
-func (this *SubscribeMessage) RemoveTopic(topic []byte) {
-	var i int
-	var t []byte
-	var found bool
-
-	for i, t = range this.topics {
-		if bytes.Equal(t, topic) {
-			found = true
-			break
-		}
-	}
-
-	if found {
-		this.topics = append(this.topics[:i], this.topics[i+1:]...)
-		this.qos = append(this.qos[:i], this.qos[i+1:]...)
-	}
-
-	this.dirty = true
-}
-
-// TopicExists checks to see if a topic exists in the list.
-func (this *SubscribeMessage) TopicExists(topic []byte) bool {
-	for _, t := range this.topics {
-		if bytes.Equal(t, topic) {
-			return true
-		}
-	}
-
-	return false
-}
-
-// TopicQos returns the QoS level of a topic. If topic does not exist, QosFailure
-// is returned.
-func (this *SubscribeMessage) TopicQos(topic []byte) byte {
-	for i, t := range this.topics {
-		if bytes.Equal(t, topic) {
-			return this.qos[i]
-		}
-	}
-
-	return QosFailure
-}
-
-// Qos returns the list of QoS current in the message.
-func (this *SubscribeMessage) Qos() []byte {
-	return this.qos
-}
-
-func (this *SubscribeMessage) Len() int {
-	if !this.dirty {
-		return len(this.dbuf)
-	}
-
-	ml := this.msglen()
-
-	if err := this.SetRemainingLength(int32(ml)); err != nil {
-		return 0
-	}
-
-	return this.header.msglen() + ml
-}
-
-func (this *SubscribeMessage) Decode(src []byte) (int, error) {
-	total := 0
-
-	hn, err := this.header.decode(src[total:])
-	total += hn
-	if err != nil {
-		return total, err
-	}
-
-	//this.packetId = binary.BigEndian.Uint16(src[total:])
-	this.packetId = src[total : total+2]
-	total += 2
-
-	remlen := int(this.remlen) - (total - hn)
-	for remlen > 0 {
-		t, n, err := readLPBytes(src[total:])
-		total += n
-		if err != nil {
-			return total, err
-		}
-
-		this.topics = append(this.topics, t)
-
-		this.qos = append(this.qos, src[total])
-		total++
-
-		remlen = remlen - n - 1
-	}
-
-	if len(this.topics) == 0 {
-		return 0, fmt.Errorf("subscribe/Decode: Empty topic list")
-	}
-
-	this.dirty = false
-
-	return total, nil
-}
-
-func (this *SubscribeMessage) Encode(dst []byte) (int, error) {
-	if !this.dirty {
-		if len(dst) < len(this.dbuf) {
-			return 0, fmt.Errorf("subscribe/Encode: Insufficient buffer size. Expecting %d, got %d.", len(this.dbuf), len(dst))
-		}
-
-		return copy(dst, this.dbuf), nil
-	}
-
-	hl := this.header.msglen()
-	ml := this.msglen()
-
-	if len(dst) < hl+ml {
-		return 0, fmt.Errorf("subscribe/Encode: Insufficient buffer size. Expecting %d, got %d.", hl+ml, len(dst))
-	}
-
-	if err := this.SetRemainingLength(int32(ml)); err != nil {
-		return 0, err
-	}
-
-	total := 0
-
-	n, err := this.header.encode(dst[total:])
-	total += n
-	if err != nil {
-		return total, err
-	}
-
-	if this.PacketId() == 0 {
-		this.SetPacketId(uint16(atomic.AddUint64(&gPacketId, 1) & 0xffff))
-		//this.packetId = uint16(atomic.AddUint64(&gPacketId, 1) & 0xffff)
-	}
-
-	n = copy(dst[total:], this.packetId)
-	//binary.BigEndian.PutUint16(dst[total:], this.packetId)
-	total += n
-
-	for i, t := range this.topics {
-		n, err := writeLPBytes(dst[total:], t)
-		total += n
-		if err != nil {
-			return total, err
-		}
-
-		dst[total] = this.qos[i]
-		total++
-	}
-
-	return total, nil
-}
-
-func (this *SubscribeMessage) msglen() int {
-	// packet ID
-	total := 2
-
-	for _, t := range this.topics {
-		total += 2 + len(t) + 1
-	}
-
-	return total
-}

lib/message/subscribe_test.go

@@ -1,161 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TestSubscribeMessageFields(t *testing.T) {
-	msg := NewSubscribeMessage()
-
-	msg.SetPacketId(100)
-	require.Equal(t, 100, int(msg.PacketId()), "Error setting packet ID.")
-
-	msg.AddTopic([]byte("/a/b/#/c"), 1)
-	require.Equal(t, 1, len(msg.Topics()), "Error adding topic.")
-
-	require.False(t, msg.TopicExists([]byte("a/b")), "Topic should not exist.")
-
-	msg.RemoveTopic([]byte("/a/b/#/c"))
-	require.False(t, msg.TopicExists([]byte("/a/b/#/c")), "Topic should not exist.")
-}
-
-func TestSubscribeMessageDecode(t *testing.T) {
-	msgBytes := []byte{
-		byte(SUBSCRIBE<<4) | 2,
-		36,
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-		0, // topic name MSB (0)
-		7, // topic name LSB (7)
-		's', 'u', 'r', 'g', 'e', 'm', 'q',
-		0, // QoS
-		0, // topic name MSB (0)
-		8, // topic name LSB (8)
-		'/', 'a', '/', 'b', '/', '#', '/', 'c',
-		1,  // QoS
-		0,  // topic name MSB (0)
-		10, // topic name LSB (10)
-		'/', 'a', '/', 'b', '/', '#', '/', 'c', 'd', 'd',
-		2, // QoS
-	}
-
-	msg := NewSubscribeMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, SUBSCRIBE, msg.Type(), "Error decoding message.")
-	require.Equal(t, 3, len(msg.Topics()), "Error decoding topics.")
-	require.True(t, msg.TopicExists([]byte("surgemq")), "Topic 'surgemq' should exist.")
-	require.Equal(t, 0, int(msg.TopicQos([]byte("surgemq"))), "Incorrect topic qos.")
-	require.True(t, msg.TopicExists([]byte("/a/b/#/c")), "Topic '/a/b/#/c' should exist.")
-	require.Equal(t, 1, int(msg.TopicQos([]byte("/a/b/#/c"))), "Incorrect topic qos.")
-	require.True(t, msg.TopicExists([]byte("/a/b/#/cdd")), "Topic '/a/b/#/c' should exist.")
-	require.Equal(t, 2, int(msg.TopicQos([]byte("/a/b/#/cdd"))), "Incorrect topic qos.")
-}
-
-// test empty topic list
-func TestSubscribeMessageDecode2(t *testing.T) {
-	msgBytes := []byte{
-		byte(SUBSCRIBE<<4) | 2,
-		2,
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-	}
-
-	msg := NewSubscribeMessage()
-	_, err := msg.Decode(msgBytes)
-
-	require.Error(t, err)
-}
-
-func TestSubscribeMessageEncode(t *testing.T) {
-	msgBytes := []byte{
-		byte(SUBSCRIBE<<4) | 2,
-		36,
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-		0, // topic name MSB (0)
-		7, // topic name LSB (7)
-		's', 'u', 'r', 'g', 'e', 'm', 'q',
-		0, // QoS
-		0, // topic name MSB (0)
-		8, // topic name LSB (8)
-		'/', 'a', '/', 'b', '/', '#', '/', 'c',
-		1,  // QoS
-		0,  // topic name MSB (0)
-		10, // topic name LSB (10)
-		'/', 'a', '/', 'b', '/', '#', '/', 'c', 'd', 'd',
-		2, // QoS
-	}
-
-	msg := NewSubscribeMessage()
-	msg.SetPacketId(7)
-	msg.AddTopic([]byte("surgemq"), 0)
-	msg.AddTopic([]byte("/a/b/#/c"), 1)
-	msg.AddTopic([]byte("/a/b/#/cdd"), 2)
-
-	dst := make([]byte, 100)
-	n, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n], "Error decoding message.")
-}
-
-// test to ensure encoding and decoding are the same
-// decode, encode, and decode again
-func TestSubscribeDecodeEncodeEquiv(t *testing.T) {
-	msgBytes := []byte{
-		byte(SUBSCRIBE<<4) | 2,
-		36,
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-		0, // topic name MSB (0)
-		7, // topic name LSB (7)
-		's', 'u', 'r', 'g', 'e', 'm', 'q',
-		0, // QoS
-		0, // topic name MSB (0)
-		8, // topic name LSB (8)
-		'/', 'a', '/', 'b', '/', '#', '/', 'c',
-		1,  // QoS
-		0,  // topic name MSB (0)
-		10, // topic name LSB (10)
-		'/', 'a', '/', 'b', '/', '#', '/', 'c', 'd', 'd',
-		2, // QoS
-	}
-
-	msg := NewSubscribeMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-
-	dst := make([]byte, 100)
-	n2, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n2, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n2], "Error decoding message.")
-
-	n3, err := msg.Decode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n3, "Error decoding message.")
-}

lib/message/unsuback.go

@@ -1,31 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-// The UNSUBACK Packet is sent by the Server to the Client to confirm receipt of an
-// UNSUBSCRIBE Packet.
-type UnsubackMessage struct {
-	PubackMessage
-}
-
-var _ Message = (*UnsubackMessage)(nil)
-
-// NewUnsubackMessage creates a new UNSUBACK message.
-func NewUnsubackMessage() *UnsubackMessage {
-	msg := &UnsubackMessage{}
-	msg.SetType(UNSUBACK)
-
-	return msg
-}

lib/message/unsuback_test.go

@@ -1,108 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TestUnsubackMessageFields(t *testing.T) {
-	msg := NewUnsubackMessage()
-
-	msg.SetPacketId(100)
-
-	require.Equal(t, 100, int(msg.PacketId()))
-}
-
-func TestUnsubackMessageDecode(t *testing.T) {
-	msgBytes := []byte{
-		byte(UNSUBACK << 4),
-		2,
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-	}
-
-	msg := NewUnsubackMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, UNSUBACK, msg.Type(), "Error decoding message.")
-	require.Equal(t, 7, int(msg.PacketId()), "Error decoding message.")
-}
-
-// test insufficient bytes
-func TestUnsubackMessageDecode2(t *testing.T) {
-	msgBytes := []byte{
-		byte(UNSUBACK << 4),
-		2,
-		7, // packet ID LSB (7)
-	}
-
-	msg := NewUnsubackMessage()
-	_, err := msg.Decode(msgBytes)
-
-	require.Error(t, err)
-}
-
-func TestUnsubackMessageEncode(t *testing.T) {
-	msgBytes := []byte{
-		byte(UNSUBACK << 4),
-		2,
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-	}
-
-	msg := NewUnsubackMessage()
-	msg.SetPacketId(7)
-
-	dst := make([]byte, 10)
-	n, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n], "Error decoding message.")
-}
-
-// test to ensure encoding and decoding are the same
-// decode, encode, and decode again
-func TestUnsubackDecodeEncodeEquiv(t *testing.T) {
-	msgBytes := []byte{
-		byte(UNSUBACK << 4),
-		2,
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-	}
-
-	msg := NewUnsubackMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-
-	dst := make([]byte, 100)
-	n2, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n2, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n2], "Error decoding message.")
-
-	n3, err := msg.Decode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n3, "Error decoding message.")
-}

lib/message/unsubscribe.go

@@ -1,210 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-import (
-	"bytes"
-	"fmt"
-	"sync/atomic"
-)
-
-// An UNSUBSCRIBE Packet is sent by the Client to the Server, to unsubscribe from topics.
-type UnsubscribeMessage struct {
-	header
-
-	topics [][]byte
-}
-
-var _ Message = (*UnsubscribeMessage)(nil)
-
-// NewUnsubscribeMessage creates a new UNSUBSCRIBE message.
-func NewUnsubscribeMessage() *UnsubscribeMessage {
-	msg := &UnsubscribeMessage{}
-	msg.SetType(UNSUBSCRIBE)
-
-	return msg
-}
-
-func (this UnsubscribeMessage) String() string {
-	msgstr := fmt.Sprintf("%s", this.header)
-
-	for i, t := range this.topics {
-		msgstr = fmt.Sprintf("%s, Topic%d=%s", msgstr, i, string(t))
-	}
-
-	return msgstr
-}
-
-// Topics returns a list of topics sent by the Client.
-func (this *UnsubscribeMessage) Topics() [][]byte {
-	return this.topics
-}
-
-// AddTopic adds a single topic to the message.
-func (this *UnsubscribeMessage) AddTopic(topic []byte) {
-	if this.TopicExists(topic) {
-		return
-	}
-
-	this.topics = append(this.topics, topic)
-	this.dirty = true
-}
-
-// RemoveTopic removes a single topic from the list of existing ones in the message.
-// If topic does not exist it just does nothing.
-func (this *UnsubscribeMessage) RemoveTopic(topic []byte) {
-	var i int
-	var t []byte
-	var found bool
-
-	for i, t = range this.topics {
-		if bytes.Equal(t, topic) {
-			found = true
-			break
-		}
-	}
-
-	if found {
-		this.topics = append(this.topics[:i], this.topics[i+1:]...)
-	}
-
-	this.dirty = true
-}
-
-// TopicExists checks to see if a topic exists in the list.
-func (this *UnsubscribeMessage) TopicExists(topic []byte) bool {
-	for _, t := range this.topics {
-		if bytes.Equal(t, topic) {
-			return true
-		}
-	}
-
-	return false
-}
-
-func (this *UnsubscribeMessage) Len() int {
-	if !this.dirty {
-		return len(this.dbuf)
-	}
-
-	ml := this.msglen()
-
-	if err := this.SetRemainingLength(int32(ml)); err != nil {
-		return 0
-	}
-
-	return this.header.msglen() + ml
-}
-
-// Decode reads from the io.Reader parameter until a full message is decoded, or
-// when io.Reader returns EOF or error. The first return value is the number of
-// bytes read from io.Reader. The second is error if Decode encounters any problems.
-func (this *UnsubscribeMessage) Decode(src []byte) (int, error) {
-	total := 0
-
-	hn, err := this.header.decode(src[total:])
-	total += hn
-	if err != nil {
-		return total, err
-	}
-
-	//this.packetId = binary.BigEndian.Uint16(src[total:])
-	this.packetId = src[total : total+2]
-	total += 2
-
-	remlen := int(this.remlen) - (total - hn)
-	for remlen > 0 {
-		t, n, err := readLPBytes(src[total:])
-		total += n
-		if err != nil {
-			return total, err
-		}
-
-		this.topics = append(this.topics, t)
-		remlen = remlen - n - 1
-	}
-
-	if len(this.topics) == 0 {
-		return 0, fmt.Errorf("unsubscribe/Decode: Empty topic list")
-	}
-
-	this.dirty = false
-
-	return total, nil
-}
-
-// Encode returns an io.Reader in which the encoded bytes can be read. The second
-// return value is the number of bytes encoded, so the caller knows how many bytes
-// there will be. If Encode returns an error, then the first two return values
-// should be considered invalid.
-// Any changes to the message after Encode() is called will invalidate the io.Reader.
-func (this *UnsubscribeMessage) Encode(dst []byte) (int, error) {
-	if !this.dirty {
-		if len(dst) < len(this.dbuf) {
-			return 0, fmt.Errorf("unsubscribe/Encode: Insufficient buffer size. Expecting %d, got %d.", len(this.dbuf), len(dst))
-		}
-
-		return copy(dst, this.dbuf), nil
-	}
-
-	hl := this.header.msglen()
-	ml := this.msglen()
-
-	if len(dst) < hl+ml {
-		return 0, fmt.Errorf("unsubscribe/Encode: Insufficient buffer size. Expecting %d, got %d.", hl+ml, len(dst))
-	}
-
-	if err := this.SetRemainingLength(int32(ml)); err != nil {
-		return 0, err
-	}
-
-	total := 0
-
-	n, err := this.header.encode(dst[total:])
-	total += n
-	if err != nil {
-		return total, err
-	}
-
-	if this.PacketId() == 0 {
-		this.SetPacketId(uint16(atomic.AddUint64(&gPacketId, 1) & 0xffff))
-		//this.packetId = uint16(atomic.AddUint64(&gPacketId, 1) & 0xffff)
-	}
-
-	n = copy(dst[total:], this.packetId)
-	//binary.BigEndian.PutUint16(dst[total:], this.packetId)
-	total += n
-
-	for _, t := range this.topics {
-		n, err := writeLPBytes(dst[total:], t)
-		total += n
-		if err != nil {
-			return total, err
-		}
-	}
-
-	return total, nil
-}
-
-func (this *UnsubscribeMessage) msglen() int {
-	// packet ID
-	total := 2
-
-	for _, t := range this.topics {
-		total += 2 + len(t)
-	}
-
-	return total
-}

lib/message/unsubscribe_test.go

@@ -1,155 +0,0 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package message
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TestUnsubscribeMessageFields(t *testing.T) {
-	msg := NewUnsubscribeMessage()
-
-	msg.SetPacketId(100)
-	require.Equal(t, 100, int(msg.PacketId()), "Error setting packet ID.")
-
-	msg.AddTopic([]byte("/a/b/#/c"))
-	require.Equal(t, 1, len(msg.Topics()), "Error adding topic.")
-
-	msg.AddTopic([]byte("/a/b/#/c"))
-	require.Equal(t, 1, len(msg.Topics()), "Error adding duplicate topic.")
-
-	msg.RemoveTopic([]byte("/a/b/#/c"))
-	require.False(t, msg.TopicExists([]byte("/a/b/#/c")), "Topic should not exist.")
-
-	require.False(t, msg.TopicExists([]byte("a/b")), "Topic should not exist.")
-
-	msg.RemoveTopic([]byte("/a/b/#/c"))
-	require.False(t, msg.TopicExists([]byte("/a/b/#/c")), "Topic should not exist.")
-}
-
-func TestUnsubscribeMessageDecode(t *testing.T) {
-	msgBytes := []byte{
-		byte(UNSUBSCRIBE<<4) | 2,
-		33,
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-		0, // topic name MSB (0)
-		7, // topic name LSB (7)
-		's', 'u', 'r', 'g', 'e', 'm', 'q',
-		0, // topic name MSB (0)
-		8, // topic name LSB (8)
-		'/', 'a', '/', 'b', '/', '#', '/', 'c',
-		0,  // topic name MSB (0)
-		10, // topic name LSB (10)
-		'/', 'a', '/', 'b', '/', '#', '/', 'c', 'd', 'd',
-	}
-
-	msg := NewUnsubscribeMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, UNSUBSCRIBE, msg.Type(), "Error decoding message.")
-	require.Equal(t, 3, len(msg.Topics()), "Error decoding topics.")
-	require.True(t, msg.TopicExists([]byte("surgemq")), "Topic 'surgemq' should exist.")
-	require.True(t, msg.TopicExists([]byte("/a/b/#/c")), "Topic '/a/b/#/c' should exist.")
-	require.True(t, msg.TopicExists([]byte("/a/b/#/cdd")), "Topic '/a/b/#/c' should exist.")
-}
-
-// test empty topic list
-func TestUnsubscribeMessageDecode2(t *testing.T) {
-	msgBytes := []byte{
-		byte(UNSUBSCRIBE<<4) | 2,
-		2,
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-	}
-
-	msg := NewUnsubscribeMessage()
-	_, err := msg.Decode(msgBytes)
-
-	require.Error(t, err)
-}
-
-func TestUnsubscribeMessageEncode(t *testing.T) {
-	msgBytes := []byte{
-		byte(UNSUBSCRIBE<<4) | 2,
-		33,
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-		0, // topic name MSB (0)
-		7, // topic name LSB (7)
-		's', 'u', 'r', 'g', 'e', 'm', 'q',
-		0, // topic name MSB (0)
-		8, // topic name LSB (8)
-		'/', 'a', '/', 'b', '/', '#', '/', 'c',
-		0,  // topic name MSB (0)
-		10, // topic name LSB (10)
-		'/', 'a', '/', 'b', '/', '#', '/', 'c', 'd', 'd',
-	}
-
-	msg := NewUnsubscribeMessage()
-	msg.SetPacketId(7)
-	msg.AddTopic([]byte("surgemq"))
-	msg.AddTopic([]byte("/a/b/#/c"))
-	msg.AddTopic([]byte("/a/b/#/cdd"))
-
-	dst := make([]byte, 100)
-	n, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n], "Error decoding message.")
-}
-
-// test to ensure encoding and decoding are the same
-// decode, encode, and decode again
-func TestUnsubscribeDecodeEncodeEquiv(t *testing.T) {
-	msgBytes := []byte{
-		byte(UNSUBSCRIBE<<4) | 2,
-		33,
-		0, // packet ID MSB (0)
-		7, // packet ID LSB (7)
-		0, // topic name MSB (0)
-		7, // topic name LSB (7)
-		's', 'u', 'r', 'g', 'e', 'm', 'q',
-		0, // topic name MSB (0)
-		8, // topic name LSB (8)
-		'/', 'a', '/', 'b', '/', '#', '/', 'c',
-		0,  // topic name MSB (0)
-		10, // topic name LSB (10)
-		'/', 'a', '/', 'b', '/', '#', '/', 'c', 'd', 'd',
-	}
-
-	msg := NewUnsubscribeMessage()
-	n, err := msg.Decode(msgBytes)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n, "Error decoding message.")
-
-	dst := make([]byte, 100)
-	n2, err := msg.Encode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n2, "Error decoding message.")
-	require.Equal(t, msgBytes, dst[:n2], "Error decoding message.")
-
-	n3, err := msg.Decode(dst)
-
-	require.NoError(t, err, "Error decoding message.")
-	require.Equal(t, len(msgBytes), n3, "Error decoding message.")
-}

main.go

@@ -4,23 +4,43 @@ import (
 	"hmq/broker"
 	"os"
 	"os/signal"
+	"runtime"
 
 	log "github.com/cihub/seelog"
 )
 
+func init() {
+	testConfig := `
+<seelog type="sync">
+	<outputs formatid="main">
+		<console/>
+	</outputs>
+	<formats>
+		<format id="main" format="Time:%Date %Time%tfile:%File%tlevel:%LEVEL%t%Msg%n"/>
+	</formats>
+</seelog>`
+
+	logger, err := log.LoggerFromConfigAsBytes([]byte(testConfig))
+	if err != nil {
+		panic(err)
+	}
+	log.ReplaceLogger(logger)
+}
+
 func main() {
+	runtime.GOMAXPROCS(runtime.NumCPU())
 	config, er := broker.LoadConfig()
 	if er != nil {
 		log.Error("Load Config file error: ", er)
 		return
 	}
 
-	broker, err := broker.NewBroker(config)
+	b, err := broker.NewBroker(config)
 	if err != nil {
 		log.Error("New Broker error: ", er)
 		return
 	}
-	broker.Start()
+	b.Start()
 
 	s := waitForSignal()
 	log.Infof("signal got: %v ,broker closed.", s)