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我正在使用AWS上託管的mosquitto broker。我的客戶已經連接到經紀人，但一段時間後，它斷開連接。它發生很多次。MQTT：蚊子斷開連接
我傳遞QOS = 2，保留=真實，乾淨的會話=假，沒有用戶名和密碼，LWT =無，端口= 1883年，IP =服務器託管在AWS上，客戶端ID =時間標記（始終是唯一的）
這裏是我的代碼 -
import time
import paho.mqtt.client as mqtt
class MqttCommunication(object):
def __init__(self):
self.current_module = "Mqtt Communication class"
self.clientID = clientId
self.name = thread_name
self.DEBUG = True
self.MQTT_HOST = ""
self.MQTT_PORT = 1883
self.MQTT_USERNAME = ""
self.MQTT_PASSWORD = ""
self.MQTT_CLIENT_ID = self.clientID
self.MQTT_TOPIC = ""
self.MQTT_QOS = 0
self.MQTT_RETAIN = None
self.MQTT_CLEAN_SESSION = None
self.MQTT_LWT = ""
self.client = mqtt.Client(self.MQTT_CLIENT_ID,clean_session=self.MQTT_CLEAN_SESSION)
self.on_connect = None
self.on_disconnect = None
self.on_message = None
self.on_subscribe = None
self.on_unsubscribe = None
self.on_publish = None
self.client.on_connect = self.mqtt_on_connect
#self.client.on_message = self.mqtt_on_message
self.client.on_disconnect = self.mqtt_on_disconnect
self.client.on_subscribe = self.mqtt_on_subscribe
self.client.on_unsubscribe = self.mqtt_on_unsubscribe
self.client.on_publish = self.mqtt_on_publish
def connectHost(self,mqtt_host,mqtt_port,mqtt_username,mqtt_password):
self.MQTT_USERNAME = mqtt_username
self.MQTT_PASSWORD = mqtt_password
self.MQTT_HOST = mqtt_host
self.MQTT_PORT = mqtt_port
try:
self.client.username_pw_set(self.MQTT_USERNAME, self.MQTT_PASSWORD)
self.client.connect(self.MQTT_HOST,self.MQTT_PORT,60)
print self.MQTT_HOST
self.client.loop_start()
except Exception, e:
print "Error connecting to %s:%d: %s" % (mqtt_host, mqtt_port, str(e))
return True
def disconnectHost(self):
self.client.disconnect()
return True
def mqttSettings(self,qos,mqtt_retain,mqtt_clean_session,mqtt_lwt):
self.MQTT_QOS = qos
self.MQTT_RETAIN = mqtt_retain
self.MQTT_CLEAN_SESSION = mqtt_clean_session
self.MQTT_LWT = mqtt_lwt
return True
def subscribeTopic(self,topic):
self.MQTT_TOPIC = topic
self.client.subscribe(self.MQTT_TOPIC, qos=self.MQTT_QOS)
return True
def unsubscribeTopic(self,topic):
self.client.unsubscribe(self.MQTT_TOPIC)
return True
def setClientId(self,clientID):
self.MQTT_CLIENT_ID= clientID
return True
def getClientId(self):
return self.MQTT_CLIENT_ID
def publishData(self,topic,message,qos):
self.client.publish(topic,message,qos)
return True
# The callback for when the client receives a CONNACK response from the server.
def mqtt_on_connect(self,client, userdata, flags, rc):
if rc == 0:
print "Connected to %s:%s" % (self.MQTT_HOST, self.MQTT_PORT)
time.sleep(3)
elif rc == 1:
print "Connection refused - unacceptable protocol version"
elif rc == 2:
print "Connection refused - identifier rejected"
elif rc == 3:
print "Connection refused - server unavailable"
elif rc == 4:
print "Connection refused - bad user name or password"
elif rc == 5:
print "Connection refused - not authorised"
else:
print "Connection failed - result code %d" % (rc)
# The callback for when a PUBLISH message is received from the server.
def mqtt_on_message(self , client, userdata, msg):
#print msg
print(msg.topic+" : "+str(msg.payload))
def mqtt_on_disconnect(self, client, userdata, rc):
if rc != 0:
print("Unexpected disconnection.")
else:
print('hello from disconnect')
def mqtt_on_publish(self, client, userdata, mid):
"""
What to do when a message is published
"""
#print "publish"
def mqtt_on_subscribe(self,client, userdata, mid, granted_qos):
"""
What to do in the event of subscribing to a topic"
"""
#logging.debug("Subscribe with mid " + str(mid) + " received.")
def mqtt_on_unsubscribe(self, client, userdata, mid):
"""
What to do in the event of unsubscribing from a topic
"""
#logging.debug("Unsubscribe with mid " + str(mid) + " received.")
分享一些日誌---
1483617475: New connection from xx.xx.xx.xx on port 1883.
1483617475: New client connected from xx.xx.xx.xx as mqttjs_bd875699 (c1, k10$
1483617718: Saving in-memory database to /var/lib/mosquitto/mosquitto.db.
1483618131: Client 2017-01-05 17:27:18.963994 has exceeded timeout, disconnecti$
1483618131: Socket error on client 2017-01-05 17:27:18.963994, disconnecting.
1483618810: Socket error on client mqttjs_bd875699, disconnecting.
1483618854: New connection from xx.xx.xx.xx on port 1883.
1483618854: New client connected from xx.xx.xx.xx as mqttjs_7aa97fd9 (c1, k10$
1483618865: Socket error on client mqttjs_7aa97fd9, disconnecting.
1483618866: New connection from xx.xx.xx.xx on port 1883.
1483618866: New client connected from xx.xx.xx.xx as mqttjs_25e2f297 (c1, k10$
1483618886: New connection from xx.xx.xx.xx on port 1883.
1483618886: New client connected from xx.xx.xx.xx as 2017-01-05 17:51:23.51980$
1483619018: Socket error on client mqttjs_25e2f297, disconnecting.
1483619019: New connection from xx.xx.xx.xx on port 1883.
1483619019: New client connected from xx.xx.xx.xx as mqttjs_1c8ec6dd (c1, k10$
1483619023: Socket error on client mqttjs_1c8ec6dd, disconnecting.
1483619024: New connection from xx.xx.xx.xx on port 1883.
這些日誌只能從Python代碼顯示一個斷開，其餘都來自什麼看起來像一個過程的NodeJS – hardillb