func pub(c *service.Client, msg *message.PublishMessage) error {
log.Printf("on publish: topic=%s payload=%s\n", string(msg.Topic()), string(msg.Payload()))
pub := message.NewPublishMessage()
pub.SetTopic([]byte("a/b/c/response"))
pub.SetQoS(0)
pub.SetPayload([]byte("Hi MQTT Server"))
return c.Publish(pub, nil)
}
func main() {
flag.Parse()
c := service.Client{}
msg := message.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"))
// Connects to the remote server at 127.0.0.1 port 1883
str := *addr + ":" + *port
c.Connect("tcp://"+str, msg)
// Creates a new SUBSCRIBE message to subscribe to topic "abc"
submsg := message.NewSubscribeMessage()
submsg.AddTopic([]byte("abc"), 0)
// Subscribes to the topic by sending the message. The first nil in the function
// call is a OnCompleteFunc that should handle the SUBACK message from the server.
// Nil means we are ignoring the SUBACK messages. The second nil should be a
// OnPublishFunc that handles any messages send to the client because of this
// subscription. Nil means we are ignoring any PUBLISH messages for this topic.
c.Subscribe(submsg, onCompleteFunc, onPublishFunc)
// Creates a new PUBLISH message with the appropriate contents for publishing
pubmsg := message.NewPublishMessage()
pubmsg.SetTopic([]byte("abc"))
pubmsg.SetPayload(make([]byte, 1024))
pubmsg.SetQoS(0)
// Publishes to the server by sending the message
c.Publish(pubmsg, onCompleteFunc)
// Disconnects from the server
jklog.L().Infoln("disconnected.")
for {
time.Sleep(5000 * time.Millisecond)
// c.Publish(pubmsg, onCompleteFunc)
}
c.Disconnect()
}
