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import paho.mqtt.client as mqtt
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3
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# The callback for when the client receives a CONNACK response from the server.
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def on_connect(client, userdata, flags, rc, properties=None):
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print("Connected with result code " + str(rc))
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# Subscribing in on_connect() means that if we lose the connection and
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# reconnect then subscriptions will be renewed.
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client.subscribe("$SYS/#")
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# The callback for when a PUBLISH message is received from the server.
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def on_message(client, userdata, message):
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print(message.topic + " " + str(message.payload))
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client = mqtt.Client()
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18
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client.on_connect = on_connect
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19
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client.on_message = on_message
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20
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client.connect("localhost", 1883, 60)
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# Blocking call that processes network traffic, dispatches callbacks and
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# handles reconnecting.
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25
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# Other loop*() functions are available that give a threaded interface and a
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26
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# manual interface.
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client.loop_forever()
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