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elad-bar / DahuaVTO2MQTT

Listens to events from Dahua VTO unit and publishes them via MQTT Message
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Retry on first-time connection error to the broker #43

Closed dudu631 closed 3 years ago

dudu631 commented 3 years ago

So, the problem was the first connection to the MQTT Broker.

When the Broker was UP, there was no problem:

============Connecting with BROKER UP============
2021-05-02 19:06:48,247 INFO __main__ Connecting
2021-05-02 19:06:48,305 INFO __main__ Initializing MQTT Broker
2021-05-02 19:06:48,306 INFO __main__ MQTT Broker is trying to connect...
2021-05-02 19:06:48,308 INFO __main__ MQTT Broker connected with result code 0
2021-05-02 19:06:48,833 INFO __main__ Attach event manager
===========================================

When the Broker was DOWN, the first connection didn't take this in consideration:

============Connecting with BROKER DOWN==========

2021-04-27 17:05:50,197 INFO __main__ Connecting
2021-04-27 17:05:50,274 INFO __main__ Connecting MQTT Broker
2021-04-27 17:05:50,275 ERROR __main__ Failed to handle message, error: [Errno 111] Connection refused, Line: 177
===========================================

The process would stop here, with no retries until container restart.

Solution: It'll keep trying until connected with the MQTT broker, just like the on_disconnect handler, but for first-time connection.

===========Connecting with BROKER DOWN===========
2021-05-02 19:09:48,751 INFO __main__ Connecting
2021-05-02 19:09:48,799 INFO __main__ Initializing MQTT Broker,
2021-05-02 19:09:48,799 INFO __main__ MQTT Broker is trying to connect...,
2021-05-02 19:09:48,800 ERROR __main__ Failed to connect to broker, retry in 60 seconds, error: [Errno 111] Connection refused, Line: 103,

2021-05-02 19:10:48,860 INFO __main__ MQTT Broker is trying to connect...,
2021-05-02 19:10:48,861 ERROR __main__ Failed to connect to broker, retry in 60 seconds, error: [Errno 111] Connection refused, Line: 103

2021-05-02 19:11:48,919 INFO __main__ MQTT Broker is trying to connect...
2021-05-02 19:11:48,959 INFO __main__ Attach event manager,
2021-05-02 19:11:49,125 INFO __main__ MQTT Broker connected with result code 0,
===========================================

I also tested a solution mentioned in the PAHO lib for this problem, with websocket type connection but it didn't work...

elad-bar commented 3 years ago

Thanks!