func test_pub() {
//create a ClientOptions struct setting the broker address, clientid, turn
//off trace output
opts := MQTT.NewClientOptions().AddBroker(*uri)
opts.SetCleanSession(false)
opts.SetDefaultPublishHandler(default_msg_handler)
opts.SetClientID(*cid)
//create and start a client using the above ClientOptions
c := MQTT.NewClient(opts)
if token := c.Connect(); token.Wait() && token.Error() != nil {
panic(token.Error())
}
//Publish messages to topic at qos and wait for the receipt
//from the server after sending each message
for i := 0; i < *count; i++ {
text := fmt.Sprintf("%s #%d", *msg, i)
token := c.Publish(*topic, byte(*qos), false, text)
if token == nil {
fmt.Printf("Publish failed\n")
} else {
token.Wait()
fmt.Printf("Published msg qos[%d] topic[%s] payload[%s]\n",
*qos, *topic, text)
}
}
// Publish the end-of-test message
token := c.Publish(*topic, byte(*qos), false, end_of_test)
if token != nil {
token.Wait()
}
c.Disconnect(250)
}
// SetupMQTT : connect to server and register callbacks
func setupMQTT(config Config) {
fmt.Printf("username : %s", config.MQTT.Username)
if pass := config.MQTT.Password; pass == "" {
fmt.Println("No password given")
} else {
fmt.Printf("password: %s\n", config.MQTT.Password)
}
var server = fmt.Sprintf("tcp://%s:%s", config.MQTT.Host, config.MQTT.Port)
opts := MQTT.NewClientOptions().AddBroker(server)
opts.SetUsername(config.MQTT.Username)
opts.SetPassword(config.MQTT.Password)
opts.SetClientID(config.MQTT.ClientID)
c = MQTT.NewClient(opts)
if token := c.Connect(); token.Wait() && token.Error() != nil {
panic(token.Error())
} else {
fmt.Printf("connected to %s\n", server)
}
//defer c.Disconnect(250)
if token := c.Subscribe(config.MQTT.Topic, 0, f); token.Wait() && token.Error() != nil {
fmt.Println(token.Error())
os.Exit(1)
}
text := fmt.Sprintf("Hello from %s who just connected!", config.MQTT.ClientID)
token := c.Publish(config.MQTT.Topic, 0, false, text)
token.Wait()
time.Sleep(2 * time.Second)
}
func main() {
//create a ClientOptions struct setting the broker address, clientid, turn
//off trace output and set the default message handler
opts := MQTT.NewClientOptions().AddBroker("tcp://nava.work:1883")
opts.SetClientID("go-simple")
opts.SetDefaultPublishHandler(f)
//create and start a client using the above ClientOptions
c := MQTT.NewClient(opts)
if token := c.Connect(); token.Wait() && token.Error() != nil {
panic(token.Error())
}
//subscribe to the topic /go-mqtt/sample and request messages to be delivered
//at a maximum qos of zero, wait for the receipt to confirm the subscription
//if token := c.Subscribe("go-mqtt/sample", 0, nil); token.Wait() && token.Error() != nil {
//fmt.Println(token.Error())
//os.Exit(1)
//}
//Publish 5 messages to /go-mqtt/sample at qos 1 and wait for the receipt
//from the server after sending each message
type payload struct {
Vendorid int
Value int
Jobid int
Siteid int
Cardid int
Timestamp string
}
for {
p := payload{
Cardid: rand.Intn(100),
Jobid: rand.Intn(5),
Siteid: rand.Intn(100),
Value: rand.Intn(100) * 10,
Vendorid: rand.Intn(2000),
Timestamp: time.Now().Format(time.RFC3339),
}
ret, _ := json.Marshal(p)
val := string(ret)
text := val
fmt.Println(text)
token := c.Publish("paybox", 0, false, text)
token.Wait()
//os.Exit(0)
time.Sleep(10 * time.Second)
}
//unsubscribe from /go-mqtt/sample
c.Disconnect(250)
}
func parser(cmd *cobra.Command, args []string) {
if verbose {
jww.SetStdoutThreshold(jww.LevelTrace)
}
opts := MQTT.NewClientOptions().AddBroker(viper.GetString("broker")).SetClientID("parser").SetCleanSession(true)
client := MQTT.NewClient(opts)
if token := client.Connect(); token.Wait() && token.Error() != nil {
jww.FATAL.Println(token.Error())
panic(token.Error())
}
defer client.Disconnect(0)
fi, err := os.Stat(viper.GetString("port"))
if err != nil {
jww.FATAL.Println(err)
panic(err)
}
if fi.Mode()&os.ModeType != 0 {
serialLoop(client)
} else {
file, err := os.Open(viper.GetString("port"))
if err != nil {
jww.FATAL.Println(err)
panic(err)
}
defer file.Close()
loop(file, client)
}
}
func main() {
opts := MQTT.NewClientOptions().AddBroker("tcp://test.mosquitto.org:1883").SetClientId("trivial")
opts.SetDefaultPublishHandler(f)
c := MQTT.NewClient(opts)
_, err := c.Start()
if err != nil {
panic(err)
}
filter, _ := MQTT.NewTopicFilter("/go-mqtt/sample", 0)
if receipt, err := c.StartSubscription(nil, filter); err != nil {
fmt.Println(err)
os.Exit(1)
} else {
<-receipt
}
for i := 0; i < 5; i++ {
text := fmt.Sprintf("this is msg #%d!", i)
receipt := c.Publish(MQTT.QOS_ONE, "/go-mqtt/sample", []byte(text))
<-receipt
}
time.Sleep(3 * time.Second)
if receipt, err := c.EndSubscription("/go-mqtt/sample"); err != nil {
fmt.Println(err)
os.Exit(1)
} else {
<-receipt
}
c.Disconnect(250)
}
// setupWillSubscriber start subscriber process and returnes a channel witch can receive will message.
func setupWillSubscriber(gw *gateway.Gateway, broker *broker.Broker) (chan MQTT.Message, inidef.Error) {
// Setup MQTT pub/sub client to confirm published content.
//
messageOutputChannel := make(chan MQTT.Message)
opts := MQTT.NewClientOptions()
brokerUrl := fmt.Sprintf("tcp://%s:%d", broker.Host, broker.Port)
opts.AddBroker(brokerUrl)
opts.SetClientID(gw.Name + "testSubscriber") // to distinguish MQTT client from publisher
opts.SetCleanSession(false)
opts.SetDefaultPublishHandler(func(client *MQTT.Client, msg MQTT.Message) {
messageOutputChannel <- msg
})
client := MQTT.NewClient(opts)
if client == nil {
return nil, inidef.Error("NewClient failed")
}
if token := client.Connect(); token.Wait() && token.Error() != nil {
return nil, inidef.Error(fmt.Sprintf("NewClient Start failed %q", token.Error()))
}
qos := 0
// assume topicPrefix == ""
willTopic := fmt.Sprintf("/%s/will", gw.Name)
client.Subscribe(willTopic, byte(qos), func(client *MQTT.Client, msg MQTT.Message) {
messageOutputChannel <- msg
})
return messageOutputChannel, inidef.Error("")
}
// MQTTConnect returns MQTTClient with options.
func MQTTConnect(gwName string, b *Broker) (*MQTT.Client, error) {
opts := MQTT.NewClientOptions()
defaulturl := fmt.Sprintf("tcp://%s:%d", b.Host, b.Port)
if b.Tls {
defaulturl := fmt.Sprintf("ssl://%s:%d", b.Host, b.Port)
opts.AddBroker(defaulturl)
opts.SetClientID(gwName)
opts.SetTLSConfig(b.TLSConfig)
} else {
opts.AddBroker(defaulturl)
opts.SetClientID(gwName)
}
log.Infof("broker connecting to: %v", defaulturl)
opts.SetUsername(b.Username)
opts.SetPassword(b.Password)
if !inidef.IsNil(b.WillMessage) {
willTopic := strings.Join([]string{b.TopicPrefix, gwName, "will"}, "/")
willQoS := 0
opts.SetBinaryWill(willTopic, b.WillMessage, byte(willQoS), true)
}
opts.SetOnConnectHandler(b.SubscribeOnConnect)
opts.SetConnectionLostHandler(b.onConnectionLost)
client := MQTT.NewClient(opts)
return client, nil
}
func publishMqtt() {
opts := mqtt.NewClientOptions()
opts.SetBroker(*broker)
opts.SetClientId("pinpad-main")
opts.SetCleanSession(true)
opts.SetTraceLevel(mqtt.Off)
opts.SetOnConnectionLost(func(client *mqtt.MqttClient, err error) {
fmt.Printf("lost mqtt connection, trying to reconnect: %s\n", err)
client.Start()
})
client := mqtt.NewClient(opts)
_, err := client.Start()
if err != nil {
fmt.Printf("could not connect to mqtt broker: %s\n", err)
return
}
var msg string
if newStatus.Open {
msg = "\"open\""
} else {
msg = "\"closed\""
}
mqttMsg := mqtt.NewMessage([]byte(msg))
mqttMsg.SetQoS(mqtt.QOS_ONE)
mqttMsg.SetRetainedFlag(true)
r := client.PublishMessage(*topic, mqttMsg)
<-r
lastPublishedStatus = newStatus
client.ForceDisconnect()
}
func main() {
config := &serial.Config{Name: "/dev/tty.usbmodem1411", Baud: 57600}
s, err := serial.OpenPort(config)
if err != nil {
panic(err)
}
opts := MQTT.NewClientOptions().AddBroker("tcp://46.101.145.61:1883")
opts.SetClientID("meteo-studio")
// Connect MQTT client
c := MQTT.NewClient(opts)
if token := c.Connect(); token.Wait() && token.Error() != nil {
panic(token.Error())
}
// Loop over serial port lines
scanner := bufio.NewScanner(s)
for scanner.Scan() {
parts := strings.Split(scanner.Text(), "|")
if parts[0] == "6" {
// if command is "6" (meteo data payload), push it to the broker
token := c.Publish("studio/meteo", 0, false, parts[1])
token.Wait()
}
}
if err := scanner.Err(); err != nil {
fmt.Fprintln(os.Stderr, "reading standard input:", err)
}
}
// setupRetainSubscriber returnes channel in order to read messages with retained flag
func setupRetainSubscriber(gw *gateway.Gateway, broker *broker.Broker, dummyDevice *device.DummyDevice) (chan [2]string, inidef.Error) {
// Setup MQTT pub/sub client to confirm published content.
//
messageOutputChannel := make(chan [2]string)
opts := MQTT.NewClientOptions()
brokerUrl := fmt.Sprintf("tcp://%s:%d", broker.Host, broker.Port)
opts.AddBroker(brokerUrl)
opts.SetClientID(gw.Name + "testSubscriber") // to distinguish MQTT client from publisher
opts.SetCleanSession(false)
opts.SetDefaultPublishHandler(func(client *MQTT.Client, msg MQTT.Message) {
messageOutputChannel <- [2]string{msg.Topic(), string(msg.Payload())}
})
client := MQTT.NewClient(opts)
if client == nil {
return nil, inidef.Error("NewClient failed")
}
if token := client.Connect(); token.Wait() && token.Error() != nil {
return nil, inidef.Error(fmt.Sprintf("NewClient Start failed %q", token.Error()))
}
qos := 0
retainedTopic := fmt.Sprintf("%s/%s/%s/%s", broker.TopicPrefix, gw.Name, dummyDevice.Name, dummyDevice.Type)
client.Subscribe(retainedTopic, byte(qos), func(client *MQTT.Client, msg MQTT.Message) {
})
return messageOutputChannel, inidef.Error("")
}
func (d *Device) DoAccess() error {
logger := log.New(os.Stdout, "", log.LstdFlags)
MQTT.ERROR = logger
MQTT.CRITICAL = logger
MQTT.WARN = logger
MQTT.DEBUG = logger
//create a ClientOptions struct setting the broker address, clientid, turn
//off trace output and set the default message handler
opts := MQTT.NewClientOptions().AddBroker("tls://" + d.access)
clientid := fmt.Sprintf("%x", d.id)
opts.SetClientID(clientid)
opts.SetUsername(clientid) // clientid as username
opts.SetPassword(hex.EncodeToString(d.token))
opts.SetKeepAlive(30 * time.Second)
opts.SetDefaultPublishHandler(d.messageHandler)
opts.SetTLSConfig(&tls.Config{Certificates: nil, InsecureSkipVerify: true})
//create and start a client using the above ClientOptions
c := MQTT.NewClient(opts)
if token := c.Connect(); token.Wait() && token.Error() != nil {
return token.Error()
}
// beigin report event test
go d.reportEvent(c)
// we just pause here to wait for messages
<-make(chan int)
defer c.Disconnect(250)
return nil
}
func main() {
tlsconfig := NewTlsConfig()
opts := MQTT.NewClientOptions()
opts.AddBroker("ssl://hushbox.net:17004")
opts.SetClientId("ssl-sample").SetTlsConfig(tlsconfig)
opts.SetDefaultPublishHandler(f)
// Start the connection
c := MQTT.NewClient(opts)
_, err := c.Start()
if err != nil {
panic(err)
}
filter, _ := MQTT.NewTopicFilter("/go-mqtt/sample", 0)
c.StartSubscription(nil, filter)
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(MQTT.QOS_ZERO, "/go-mqtt/sample", []byte(text))
i++
}
c.Disconnect(250)
}
func mqttClient(mqttUrl string) (*MQTT.MqttClient, error) {
opts := MQTT.NewClientOptions()
opts.AddBroker(mqttUrl)
opts.SetCleanSession(true)
opts.SetClientId(clientId())
opts.SetOnConnectionLost(func(client *MQTT.MqttClient, reason error) {
log.Fatal("MQTT CONNECTION LOST", reason) // TODO reconnect
})
parsed, err := url.Parse(mqttUrl)
if err != nil {
return nil, err
}
if user := parsed.User; user != nil {
if username := user.Username(); username != "" {
opts.SetUsername(username)
}
if password, set := user.Password(); set {
opts.SetPassword(password)
}
}
client := MQTT.NewClient(opts)
_, err = client.Start()
if err != nil {
return nil, err
}
return client, nil
}
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() {
/*
* MQTT setup
*/
opts := MQTT.NewClientOptions().AddBroker("tcp://localhost:1883")
opts.SetClientID("golirc")
mc := MQTT.NewClient(opts)
if token := mc.Connect(); token.Wait() && token.Error() != nil {
panic(token.Error())
}
/*
* LIRC setup
*/
ir, err := lirc.Init("/var/run/lirc/lircd")
if err != nil {
panic(err)
}
ir.Handle("", "BTN_0", makeHandler(mc, "0"))
ir.Handle("", "BTN_1", makeHandler(mc, "1"))
ir.Handle("", "BTN_2", makeHandler(mc, "2"))
ir.Handle("", "BTN_3", makeHandler(mc, "3"))
go ir.Run()
select {}
}
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() {
myNoOpStore := &NoOpStore{}
opts := MQTT.NewClientOptions()
opts.AddBroker("tcp://test.mosquitto.org:1883")
opts.SetClientId("custom-store")
opts.SetStore(myNoOpStore)
var callback MQTT.MessageHandler = func(client *MQTT.MqttClient, msg MQTT.Message) {
fmt.Printf("TOPIC: %s\n", msg.Topic())
fmt.Printf("MSG: %s\n", msg.Payload())
}
c := MQTT.NewClient(opts)
_, err := c.Start()
if err != nil {
panic(err)
}
filter, _ := MQTT.NewTopicFilter("/go-mqtt/sample", 0)
c.StartSubscription(callback, filter)
for i := 0; i < 5; i++ {
text := fmt.Sprintf("this is msg #%d!", i)
c.Publish(MQTT.QOS_ONE, "/go-mqtt/sample", []byte(text))
}
for i := 1; i < 5; i++ {
time.Sleep(1 * time.Second)
}
c.Disconnect(250)
}
func main() {
opts := MQTT.NewClientOptions().AddBroker("tcp://lite.mqtt.shiguredo.jp:1883")
opts.SetDefaultPublishHandler(f)
opts.SetOnConnectHandler(onConnect)
opts.SetCleanSession(true)
opts.SetUsername("shirou@github")
opts.SetPassword("8Ub6F68kfYlr7RoV")
c := MQTT.NewClient(opts)
if token := c.Connect(); token.Wait() && token.Error() != nil {
panic(token.Error())
}
qos := 0
retain := false
payload := "sanple"
topic := "shirou@github/log"
token := c.Publish(topic, byte(qos), retain, payload)
// token.Wait()
fmt.Println("%v", token.Error())
for {
time.Sleep(1 * time.Second)
}
}
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)
}
// connectToHub sets up an MQTT client and registers as a "jet/..." client.
// Uses last-will to automatically unregister on disconnect. This returns a
// "topic notifier" channel to allow updating the registered status value.
func connectToHub(clientName, port string, retain bool) chan<- interface{} {
// add a "fairly random" 6-digit suffix to make the client name unique
nanos := time.Now().UnixNano()
clientID := fmt.Sprintf("%s/%06d", clientName, nanos%1e6)
options := mqtt.NewClientOptions()
options.AddBroker(port)
options.SetClientID(clientID)
options.SetKeepAlive(10)
options.SetBinaryWill(clientName+"/"+clientID, nil, 1, retain)
hub = mqtt.NewClient(options)
if t := hub.Connect(); t.Wait() && t.Error() != nil {
log.Fatal(t.Error())
}
if retain {
log.Println("connected as", clientID, "to", port)
}
// register as jet client, cleared on disconnect by the will
feed := topicNotifier("jet/"+clientID, retain)
feed <- 0 // start off with state "0" to indicate connection
// return a topic feed to allow publishing hub status changes
return feed
}
// 指定されたBrokerへ接続し、そのMQTTクライアントを返す。
// 接続に失敗した場合は nil を返す。
func Connect(id int, execOpts ExecOptions) *MQTT.Client {
// 複数プロセスで、ClientIDが重複すると、Broker側で問題となるため、
// プロセスIDを利用して、IDを割り振る。
// mqttbench<プロセスIDの16進数値>-<クライアントの連番>
pid := strconv.FormatInt(int64(os.Getpid()), 16)
clientId := fmt.Sprintf("mqttbench%s-%d", pid, id)
opts := MQTT.NewClientOptions()
opts.AddBroker(execOpts.Broker)
opts.SetClientID(clientId)
if execOpts.Username != "" {
opts.SetUsername(execOpts.Username)
}
if execOpts.Password != "" {
opts.SetPassword(execOpts.Password)
}
// TLSの設定
certConfig := execOpts.CertConfig
switch c := certConfig.(type) {
case ServerCertConfig:
tlsConfig := CreateServerTlsConfig(c.ServerCertFile)
opts.SetTLSConfig(tlsConfig)
case ClientCertConfig:
tlsConfig := CreateClientTlsConfig(c.RootCAFile, c.ClientCertFile, c.ClientKeyFile)
opts.SetTLSConfig(tlsConfig)
default:
// do nothing.
}
if execOpts.UseDefaultHandler == true {
// Apollo(1.7.1利用)の場合、DefaultPublishHandlerを指定しないと、Subscribeできない。
// ただし、指定した場合でもretainされたメッセージは最初の1度しか取得されず、2回目以降のアクセスでは空になる点に注意。
var result *SubscribeResult = &SubscribeResult{}
result.Count = 0
var handler MQTT.MessageHandler = func(client *MQTT.Client, msg MQTT.Message) {
result.Count++
if Debug {
fmt.Printf("Received at defaultHandler : topic=%s, message=%s\n", msg.Topic(), msg.Payload())
}
}
opts.SetDefaultPublishHandler(handler)
DefaultHandlerResults[id] = result
}
client := MQTT.NewClient(opts)
token := client.Connect()
if token.Wait() && token.Error() != nil {
fmt.Printf("Connected error: %s\n", token.Error())
return nil
}
return client
}
func (t *Conn) Connect() error {
t.client = MQTT.NewClient(t.opts)
if token := t.client.Connect(); token.Wait() && token.Error() != nil {
return token.Error()
}
return nil
}
func StartMqttConnection() (*MQTT.MqttClient, *MQTT.ClientOptions, error) {
opts := MQTT.NewClientOptions().AddBroker("tcp://test.mosquitto.org:1883").SetClientId("GolangWeatherStation")
opts.SetOnConnectionLost(onMqttConnLost)
c := MQTT.NewClient(opts)
_, err := c.Start()
mqttConnected = true
return c, opts, err
}
// Connects connect to the MQTT broker with Options.
func (m *MQTTClient) Connect() (*MQTT.MqttClient, error) {
m.Client = MQTT.NewClient(m.Opts)
_, err := m.Client.Start()
if err != nil {
return nil, err
}
return m.Client, nil
}
func main() {
opts := MQTT.NewClientOptions().SetBroker("tcp://test.mosquitto.org:1883").SetClientId("router-sample")
opts.SetTraceLevel(MQTT.Off)
opts.SetCleanSession(true)
c := MQTT.NewClient(opts)
_, err := c.Start()
if err != nil {
panic(err)
}
loadFilter, _ := MQTT.NewTopicFilter("$SYS/broker/load/#", 0)
if receipt, err := c.StartSubscription(brokerLoadHandler, loadFilter); err != nil {
fmt.Println(err)
os.Exit(1)
} else {
<-receipt
}
connectionFilter, _ := MQTT.NewTopicFilter("$SYS/broker/connection/#", 0)
if receipt, err := c.StartSubscription(brokerConnectionHandler, connectionFilter); err != nil {
fmt.Println(err)
os.Exit(1)
} else {
<-receipt
}
clientsFilter, _ := MQTT.NewTopicFilter("$SYS/broker/clients/#", 0)
if receipt, err := c.StartSubscription(brokerClientsHandler, clientsFilter); err != nil {
fmt.Println(err)
os.Exit(1)
} else {
<-receipt
}
num_bload := 0
num_bconns := 0
num_bclients := 0
for i := 0; i < 100; i++ {
select {
case <-broker_load:
num_bload++
case <-broker_connection:
num_bconns++
case <-broker_clients:
num_bclients++
}
}
fmt.Printf("Received %3d Broker Load messages\n", num_bload)
fmt.Printf("Received %3d Broker Connection messages\n", num_bconns)
fmt.Printf("Received %3d Broker Clients messages\n", num_bclients)
c.Disconnect(250)
}
func main() {
opts := MQTT.NewClientOptions().AddBroker("tcp://localhost:1883")
c := MQTT.NewClient(opts)
if token := c.Connect(); token.Wait() && token.Error() != nil {
panic(token.Error())
}
for {
time.Sleep(1 * time.Second)
}
}
// connects MQTT broker
func (m MqttClient) Connect(conf MqttConf, opts *MQTT.ClientOptions, subscribed map[string]byte) (*MQTT.Client, error) {
m.Client = MQTT.NewClient(m.Opts)
log.Info("connecting...")
if token := m.Client.Connect(); token.Wait() && token.Error() != nil {
return nil, token.Error()
}
return m.Client, nil
}
func client(s string) *MQTT.Client {
connOpts := MQTT.NewClientOptions().AddBroker(server).SetClientID(topic + s)
client := MQTT.NewClient(connOpts)
if t := client.Connect(); t.Wait() && t.Error() != nil {
panic(t.Error())
}
return client
}
// Connects connect to the MQTT broker with Options.
func (m *MQTTClient) Connect() (*MQTT.Client, error) {
m.Client = MQTT.NewClient(m.Opts)
log.Info("connecting...")
if token := m.Client.Connect(); token.Wait() && token.Error() != nil {
return nil, token.Error()
}
return m.Client, nil
}
func (c *Client) pubMessages(in, out chan *Message, doneGen, donePub chan bool) {
onConnected := func(client *mqtt.Client) {
log.Printf("CLIENT %v is connected to the broker %v\n", c.ID, c.BrokerURL)
ctr := 0
for {
select {
case m := <-in:
m.Sent = time.Now()
token := client.Publish(m.Topic, m.QoS, false, m.Payload)
token.Wait()
if token.Error() != nil {
log.Printf("CLIENT %v Error sending message: %v\n", c.ID, token.Error())
m.Error = true
} else {
m.Delivered = time.Now()
m.Error = false
}
out <- m
if ctr > 0 && ctr%100 == 0 {
log.Printf("CLIENT %v published %v messages and keeps publishing...\n", c.ID, ctr)
}
ctr++
case <-doneGen:
donePub <- true
log.Printf("CLIENT %v is done publishing\n", c.ID)
return
}
}
}
opts := mqtt.NewClientOptions().
AddBroker(c.BrokerURL).
SetClientID(fmt.Sprintf("mqtt-benchmark-%v-%v", time.Now(), c.ID)).
SetCleanSession(true).
SetAutoReconnect(true).
SetOnConnectHandler(onConnected).
SetConnectionLostHandler(func(client *mqtt.Client, reason error) {
log.Printf("CLIENT %v lost connection to the broker: %v. Will reconnect...\n", c.ID, reason.Error())
})
if c.BrokerUser != "" && c.BrokerPass != "" {
opts.SetUsername(c.BrokerUser)
opts.SetPassword(c.BrokerPass)
}
client := mqtt.NewClient(opts)
token := client.Connect()
token.Wait()
if token.Error() != nil {
log.Printf("CLIENT %v had error connecting to the broker: %v\n", c.ID, token.Error())
}
}