on_publish(client, userdata, mid): 1. 1 对于Qos级别为1和2的消息,这意味着已经完成了与代理的握手。 对于Qos级别为0的消息,这只意味着消息离开了客户端。 mid变量与从相应的publish()返回的mid变量匹配,以允许跟踪传出的消息。 此回调很重要,因为即使publish()调用返回,但并不总意味着消息已发送。 (5)o...
def on_connect(mqttc, obj, rc): print("OnConnetc, rc: " + str(rc)) def on_publish(mqttc, obj, mid): print("OnPublish, mid: " + str(mid)) def on_subscribe(mqttc, obj, mid, granted_qos): print("Subscribed: " + str(mid) + " " + str(granted_qos)) def on_log(mqttc...
print("On onPublish: qos = %d" % mid) pass # 断开链接回调 def on_disconnect(client, userdata, rc): print "断开链接" print("Unexpected disconnection rc = " + str(rc)) pass client = mqtt.Client() client.on_connect = on_connect client.on_message = on_message client.on_publish = on...
def on_publish(mqttc, obj, mid): print("OnPublish, mid: " + str(mid)) def on_subscribe(mqttc, obj, mid, granted_qos): print("Subscribed: " + str(mid) + " " + str(granted_qos)) def on_log(mqttc, obj, level, string): print("Log:" + string) def on_message(mqttc, obj...
def on_publish(mqttc, obj, mid): print("OnPublish, mid: "+str(mid)) def on_subscribe(mqttc, obj, mid, granted_qos): print("Subscribed: "+str(mid)+" "+str(granted_qos)) def on_log(mqttc, obj, level, string): print("Log:"+string) def on_message(mqttc, obj, msg): curti...
on_message(client, userdata, message): 当收到关于客户订阅的主题的消息时调用。 message是一个描述所有消息参数的MQTTMessage。 (4)on_publish() 当使用使用publish()发送的消息已经传输到代理时被调用。 on_publish(client, userdata, mid): 对于Qos级别为1和2的消息,这意味着已经完成了与代理的握手。
on_code_list[0]}") client.disconnect() #发布消息回调 def on_publish(client, userdata, mid, reason_code, properties): print("发布消息") print("On onPublish: qos = %d" % mid) #断开连接回调 def on_disconnect(client, userdata, rc, reason, properties): #CallbackAPIVersion.VERSION2 on_...
on_publish(client, userdata, mid) 当一个信息被publish()发送给Broker 后,会调用on_publish()。对于QoS为1和2的消息(message),这意味着适当的握手都已经完成了。对于QoS为0的消息,这仅仅意味着消息离开了client。mid 变量匹配publish()返回的mid变量,使得出去的消息可以被追踪。
importpaho.mqtt.clientasmqttdefon_publish(client,userdata,mid):print("message ID ",mid)client.disconnect()defon_connect(client,userdata,flags,rc):ifrc==0:client.publish("test",payload="hello world",qos=1)else:print("connection failed ",rc)mqtt_client=mqtt.Client(client_id="demo_...
print("OnPublish, mid: " + str(mid)) def on_subscribe(mqttc, obj, mid, granted_qos): print("Subscribed: " + str(mid) + " " + str(granted_qos)) def on_log(mqttc, obj, level, string): print("Log:" + string) def on_message(mqttc, obj, msg): ...