Paho MQTT client connection reliability (reconnect on disconnection)

Question

What is the most reliable way to use the Python Paho MQTT client? I want to be able to handle connection interruptions due to WiFi drops and keep trying to reconnect until it\'s

Answer 1

1. Set a client_id so it's the same across reconnects
2. Set the clean_session=false connection option
3. Subscribe at QOS greater than 0

These options will help ensure that any messages published while disconnected will be delivered once the connection is restored.

You can set the client_id and clean_session flag in the constructor

client = mqtt.Client(client_id="foo123", clean_session=False)

And set the QOS of the subscription after the topic

client.subscribe(topic, qos=1)