Disconnected from MQTT. Reason: TCP_DISCONNECTED

[lbarcella]

Hi,
i use PlatformIO with:
platform = espressif32
board = esp32dev

My MQTT server is Mosquitto based
With framework-arduinoespressif32 @ 2.17 all work fine.

The arduino framework is now updated to framework-arduinoespressif32 @ 3.0.0
I have update the wifi events.
In a first time all works fine, but next few minutes the connections to MQTT become very instable

If i use Mosquitto 1.6 on Windows i receive a lot of events TCP_DISCONNECTED and next TCP_CONNECTED
** If i use Mosquitto 2.0 on Linux (Debian) some time i receive the same events **

You can test this issue with your example named FullyFeatured-ESP32.ino and a mosquitto server listen on port 1883

To create this issue you need run the same example on two esp32 and you can see that connection fail more time !
Write into loop function to call mosquito subscribe every 500ms

Any idea?
Thank you
L.

[jeremyvnc]

I am running into the same issue. Have you found any workarounds?
I downgraded to Mosquitto 1.6.13 and now it connects fine.

[lbarcella]

Hi,
yes, by my side i have add the clientid on the client call and all work fine.