func main() {
myNoOpStore := &NoOpStore{}
opts := MQTT.NewClientOptions()
opts.AddBroker("tcp://iot.eclipse.org:1883")
opts.SetClientID("custom-store")
opts.SetStore(myNoOpStore)
var callback MQTT.MessageHandler = func(client *MQTT.Client, msg MQTT.Message) {
fmt.Printf("TOPIC: %s\n", msg.Topic())
fmt.Printf("MSG: %s\n", msg.Payload())
}
c := MQTT.NewClient(opts)
if token := c.Connect(); token.Wait() && token.Error() != nil {
panic(token.Error())
}
c.Subscribe("/go-mqtt/sample", 0, callback)
for i := 0; i < 5; i++ {
text := fmt.Sprintf("this is msg #%d!", i)
token := c.Publish("/go-mqtt/sample", 0, false, text)
token.Wait()
}
for i := 1; i < 5; i++ {
time.Sleep(1 * time.Second)
}
c.Disconnect(250)
}
func main() {
opts := MQTT.NewClientOptions().AddBroker("tcp://iot.eclipse.org:1883").SetClientID("gotrivial")
opts.SetDefaultPublishHandler(f)
c := MQTT.NewClient(opts)
if token := c.Connect(); token.Wait() && token.Error() != nil {
panic(token.Error())
}
if token := c.Subscribe("/go-mqtt/sample", 0, nil); token.Wait() && token.Error() != nil {
fmt.Println(token.Error())
os.Exit(1)
}
for i := 0; i < 5; i++ {
text := fmt.Sprintf("this is msg #%d!", i)
token := c.Publish("/go-mqtt/sample", 0, false, text)
token.Wait()
}
time.Sleep(3 * time.Second)
if token := c.Unsubscribe("/go-mqtt/sample"); token.Wait() && token.Error() != nil {
fmt.Println(token.Error())
os.Exit(1)
}
c.Disconnect(250)
}
func main() {
tlsconfig := NewTLSConfig()
opts := MQTT.NewClientOptions()
opts.AddBroker("ssl://iot.eclipse.org:8883")
opts.SetClientID("ssl-sample").SetTLSConfig(tlsconfig)
opts.SetDefaultPublishHandler(f)
// Start the connection
c := MQTT.NewClient(opts)
if token := c.Connect(); token.Wait() && token.Error() != nil {
panic(token.Error())
}
c.Subscribe("/go-mqtt/sample", 0, nil)
i := 0
for _ = range time.Tick(time.Duration(1) * time.Second) {
if i == 5 {
break
}
text := fmt.Sprintf("this is msg #%d!", i)
c.Publish("/go-mqtt/sample", 0, false, text)
i++
}
c.Disconnect(250)
}
func (p *Publish) initConnection() error {
p.lg.InfoC("开始组成员建立MQTT数据连接初始化...")
ul := len(p.userData)
var wgroup sync.WaitGroup
wgroup.Add(ul)
for i := 0; i < ul; i++ {
go func(user config.User) {
defer wgroup.Done()
clientID := user.UserID
opts := MQTT.NewClientOptions()
opts.AddBroker(fmt.Sprintf("%s://%s", p.cfg.Network, p.cfg.Address))
opts.SetClientID(clientID)
opts.SetStore(MQTT.NewMemoryStore())
opts.SetProtocolVersion(4)
opts.SetAutoReconnect(p.cfg.AutoReconnect)
if name, pwd := p.cfg.UserName, p.cfg.Password; name != "" && pwd != "" {
opts.SetUsername(name)
opts.SetPassword(pwd)
}
if v := p.cfg.KeepAlive; v > 0 {
opts.SetKeepAlive(time.Duration(v) * time.Second)
}
if v := p.cfg.CleanSession; v {
opts.SetCleanSession(v)
}
clientHandle := NewHandleConnect(clientID, p)
opts.SetConnectionLostHandler(func(cli *MQTT.Client, err error) {
clientHandle.ErrorHandle(err)
})
LB_RECONNECT:
cli := MQTT.NewClient(opts)
connectToken := cli.Connect()
if connectToken.Wait() && connectToken.Error() != nil {
time.Sleep(time.Millisecond * 100)
goto LB_RECONNECT
}
subTopics := make(map[string]byte)
for j := 0; j < len(user.Groups); j++ {
topic := "G/" + user.Groups[j]
subTopics[topic] = p.cfg.Qos
}
subToken := cli.SubscribeMultiple(subTopics, func(cli *MQTT.Client, msg MQTT.Message) {
clientHandle.Subscribe([]byte(msg.Topic()), msg.Payload())
})
if subToken.Wait() && subToken.Error() != nil {
time.Sleep(time.Millisecond * 100)
goto LB_RECONNECT
}
p.clients.Set(clientID, cli)
}(p.userData[i])
}
wgroup.Wait()
p.lg.InfoC("组成员建立MQTT数据连接完成.")
return nil
}
func (p *Publish) initConnection() error {
p.lg.Info("开始建立MQTT数据连接初始化...")
var wgroup sync.WaitGroup
cl := len(p.clientData)
wgroup.Add(cl)
for i, l := 0, cl; i < l; i++ {
go func(clientInfo config.ClientInfo) {
defer wgroup.Done()
clientID := clientInfo.ClientID
opts := MQTT.NewClientOptions()
opts.AddBroker(fmt.Sprintf("%s://%s", p.cfg.Network, p.cfg.Address))
opts.SetClientID(clientID)
opts.SetProtocolVersion(4)
opts.SetAutoReconnect(p.cfg.AutoReconnect)
opts.SetStore(MQTT.NewMemoryStore())
if name, pwd := p.cfg.UserName, p.cfg.Password; name != "" && pwd != "" {
opts.SetUsername(name)
opts.SetPassword(pwd)
}
if v := p.cfg.KeepAlive; v > 0 {
opts.SetKeepAlive(time.Duration(v) * time.Second)
}
if v := p.cfg.CleanSession; v {
opts.SetCleanSession(v)
}
clientHandle := NewHandleConnect(clientID, p)
opts.SetConnectionLostHandler(func(cli *MQTT.Client, err error) {
clientHandle.ErrorHandle(err)
})
LB_RECONNECT:
cli := MQTT.NewClient(opts)
connectToken := cli.Connect()
if connectToken.Wait() && connectToken.Error() != nil {
// p.lg.Errorf("客户端[%s]建立连接发生异常:%s", clientID, connectToken.Error().Error())
goto LB_RECONNECT
}
topic := "C/" + clientID
subToken := cli.Subscribe(topic, p.cfg.Qos, func(cli *MQTT.Client, msg MQTT.Message) {
clientHandle.Subscribe([]byte(msg.Topic()), msg.Payload())
})
if subToken.Wait() && subToken.Error() != nil {
// p.lg.Errorf("客户端[%s]订阅主题发生异常:%s", clientID, subToken.Error().Error())
// return
goto LB_RECONNECT
}
p.clients.Set(clientID, cli)
}(p.clientData[i])
}
wgroup.Wait()
p.lg.Info("MQTT数据连接初始化完成.")
return nil
}
func main() {
//MQTT.DEBUG = log.New(os.Stdout, "", 0)
//MQTT.ERROR = log.New(os.Stdout, "", 0)
c := make(chan os.Signal, 1)
i = 0
signal.Notify(c, os.Interrupt, syscall.SIGTERM)
go func() {
<-c
fmt.Println("signal received, exiting")
os.Exit(0)
}()
hostname, _ := os.Hostname()
server := flag.String("server", "tcp://127.0.0.1:1883", "The full url of the MQTT server to connect to ex: tcp://127.0.0.1:1883")
topic := flag.String("topic", "#", "Topic to subscribe to")
qos := flag.Int("qos", 0, "The QoS to subscribe to messages at")
clientid := flag.String("clientid", hostname+strconv.Itoa(time.Now().Second()), "A clientid for the connection")
username := flag.String("username", "", "A username to authenticate to the MQTT server")
password := flag.String("password", "", "Password to match username")
flag.Parse()
connOpts := &MQTT.ClientOptions{
ClientID: *clientid,
CleanSession: true,
Username: *username,
Password: *password,
MaxReconnectInterval: 1 * time.Second,
KeepAlive: 10 * time.Second,
TLSConfig: tls.Config{InsecureSkipVerify: true, ClientAuth: tls.NoClientCert},
AutoReconnect: true,
}
connOpts.AddBroker(*server)
connOpts.OnConnect = func(c *MQTT.Client) {
if token := c.Subscribe(*topic, byte(*qos), onMessageReceived); token.Wait() && token.Error() != nil {
panic(token.Error())
}
}
client := MQTT.NewClient(connOpts)
if token := client.Connect(); token.Wait() && token.Error() != nil {
panic(token.Error())
} else {
fmt.Printf("Connected to %s\n", *server)
}
for {
time.Sleep(1 * time.Second)
}
}
func main() {
opts := MQTT.NewClientOptions().AddBroker("tcp://iot.eclipse.org:1883").SetClientID("router-sample")
opts.SetCleanSession(true)
c := MQTT.NewClient(opts)
if token := c.Connect(); token.Wait() && token.Error() != nil {
panic(token.Error())
}
if token := c.Subscribe("$SYS/broker/load/#", 0, brokerLoadHandler); token.Wait() && token.Error() != nil {
fmt.Println(token.Error())
os.Exit(1)
}
if token := c.Subscribe("$SYS/broker/connection/#", 0, brokerConnectionHandler); token.Wait() && token.Error() != nil {
fmt.Println(token.Error())
os.Exit(1)
}
if token := c.Subscribe("$SYS/broker/clients/#", 0, brokerClientsHandler); token.Wait() && token.Error() != nil {
fmt.Println(token.Error())
os.Exit(1)
}
loadCount := 0
connectionCount := 0
clientsCount := 0
for i := 0; i < 100; i++ {
select {
case <-brokerLoad:
loadCount++
case <-brokerConnection:
connectionCount++
case <-brokerClients:
clientsCount++
}
}
fmt.Printf("Received %3d Broker Load messages\n", loadCount)
fmt.Printf("Received %3d Broker Connection messages\n", connectionCount)
fmt.Printf("Received %3d Broker Clients messages\n", clientsCount)
c.Disconnect(250)
}
func main() {
//MQTT.DEBUG = log.New(os.Stdout, "", 0)
//MQTT.ERROR = log.New(os.Stdout, "", 0)
stdin := bufio.NewReader(os.Stdin)
hostname, _ := os.Hostname()
server := flag.String("server", "tcp://127.0.0.1:1883", "The full URL of the MQTT server to connect to")
topic := flag.String("topic", hostname, "Topic to publish the messages on")
qos := flag.Int("qos", 0, "The QoS to send the messages at")
retained := flag.Bool("retained", false, "Are the messages sent with the retained flag")
clientid := flag.String("clientid", hostname+strconv.Itoa(time.Now().Second()), "A clientid for the connection")
username := flag.String("username", "", "A username to authenticate to the MQTT server")
password := flag.String("password", "", "Password to match username")
flag.Parse()
connOpts := MQTT.NewClientOptions().AddBroker(*server).SetClientID(*clientid).SetCleanSession(true)
if *username != "" {
connOpts.SetUsername(*username)
if *password != "" {
connOpts.SetPassword(*password)
}
}
tlsConfig := &tls.Config{InsecureSkipVerify: true, ClientAuth: tls.NoClientCert}
connOpts.SetTLSConfig(tlsConfig)
client := MQTT.NewClient(connOpts)
if token := client.Connect(); token.Wait() && token.Error() != nil {
fmt.Println(token.Error())
return
}
fmt.Printf("Connected to %s\n", *server)
for {
message, err := stdin.ReadString('\n')
if err == io.EOF {
os.Exit(0)
}
client.Publish(*topic, byte(*qos), *retained, message)
}
}
func main() {
topic := flag.String("topic", "", "The topic name to/from which to publish/subscribe")
broker := flag.String("broker", "tcp://iot.eclipse.org:1883", "The broker URI. ex: tcp://10.10.1.1:1883")
password := flag.String("password", "", "The password (optional)")
user := flag.String("user", "", "The User (optional)")
id := flag.String("id", "testgoid", "The ClientID (optional)")
cleansess := flag.Bool("clean", false, "Set Clean Session (default false)")
qos := flag.Int("qos", 0, "The Quality of Service 0,1,2 (default 0)")
num := flag.Int("num", 1, "The number of messages to publish or subscribe (default 1)")
payload := flag.String("message", "", "The message text to publish (default empty)")
action := flag.String("action", "", "Action publish or subscribe (required)")
store := flag.String("store", ":memory:", "The Store Directory (default use memory store)")
flag.Parse()
if *action != "pub" && *action != "sub" {
fmt.Println("Invalid setting for -action, must be pub or sub")
return
}
if *topic == "" {
fmt.Println("Invalid setting for -topic, must not be empty")
return
}
fmt.Printf("Sample Info:\n")
fmt.Printf("\taction: %s\n", *action)
fmt.Printf("\tbroker: %s\n", *broker)
fmt.Printf("\tclientid: %s\n", *id)
fmt.Printf("\tuser: %s\n", *user)
fmt.Printf("\tpassword: %s\n", *password)
fmt.Printf("\ttopic: %s\n", *topic)
fmt.Printf("\tmessage: %s\n", *payload)
fmt.Printf("\tqos: %d\n", *qos)
fmt.Printf("\tcleansess: %v\n", *cleansess)
fmt.Printf("\tnum: %d\n", *num)
fmt.Printf("\tstore: %s\n", *store)
opts := MQTT.NewClientOptions()
opts.AddBroker(*broker)
opts.SetClientID(*id)
opts.SetUsername(*user)
opts.SetPassword(*password)
opts.SetCleanSession(*cleansess)
if *store != ":memory:" {
opts.SetStore(MQTT.NewFileStore(*store))
}
if *action == "pub" {
client := MQTT.NewClient(opts)
if token := client.Connect(); token.Wait() && token.Error() != nil {
panic(token.Error())
}
fmt.Println("Sample Publisher Started")
for i := 0; i < *num; i++ {
fmt.Println("---- doing publish ----")
token := client.Publish(*topic, byte(*qos), false, *payload)
token.Wait()
}
client.Disconnect(250)
fmt.Println("Sample Publisher Disconnected")
} else {
receiveCount := 0
choke := make(chan [2]string)
opts.SetDefaultPublishHandler(func(client *MQTT.Client, msg MQTT.Message) {
choke <- [2]string{msg.Topic(), string(msg.Payload())}
})
client := MQTT.NewClient(opts)
if token := client.Connect(); token.Wait() && token.Error() != nil {
panic(token.Error())
}
if token := client.Subscribe(*topic, byte(*qos), nil); token.Wait() && token.Error() != nil {
fmt.Println(token.Error())
os.Exit(1)
}
for receiveCount < *num {
incoming := <-choke
fmt.Printf("RECEIVED TOPIC: %s MESSAGE: %s\n", incoming[0], incoming[1])
receiveCount++
}
client.Disconnect(250)
fmt.Println("Sample Subscriber Disconnected")
}
}