Invalid json sent to MQTT

[kamaradclimber]

From time to time it seems invalid json messages are sent to MQTT.

For instance:
{"uptime":2253526185,"voltage":3.33,"free memory":70,"free heap":28224,"wifi":100,"mqtt reconnects":7368,"total reads":450255,"good reads":450244,"bad crc reads0]�panasonic_heat_pump/logSun Jun 9 18:03:34 2024 (2253531506): Requesting new pana

or

{"uptime0]�panasonic_heat_pump/logSun Jun 9 08:03:46 2024 (2217544209): Requesting new panasonic data0m�panasonic_heat_pump/logSun Jun 9 08:03:47 2024 (2217544756): sent bytes: 111 including checksum value: 18 0��panasonic_heat_pump/LWTOnli

it seems to happen only on panasonic_heat_pump/stats topic.

[kamaradclimber]

@Egyras would that issue ring a bell?

Here is a count of those events on my installation (sadly I can't share the logs but you would see what I wrote in my first message, repeated over and over).

[kamaradclimber]

@geduxas and @IgorYbema might also have ideas on this

[geduxas]

I had noticed something like this in past.. but it was mqtt server issues..

In other cases, it could lead to memory issues..

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 5 days.

[kamaradclimber]

I don’t see traces of this anymore, let’s close for now.

[kamaradclimber]

Actually I can see traces of this in the last 15 days (around 60 occurrences)

[geduxas]

Actually I can see traces of this in the last 15 days (around 60 occurrences)

Is it possible to run some wireshark/tcpdump in mqtt server and capture network traffic from heishamon for a while.. it's important to get network level data..

[kamaradclimber]

It seems to happen quite infrequently, I’ve setup a tcpdump of mqtt traffic from heishamon and will be alerted when the issue reoccur.

[geduxas]

Personally I suspect some TCP stack buffer overflow.. or coruption.. strange things happens while trying to update frimware while listening in console window.. so i think something simmilar could lead to corruption of MQTT packet.. almost same happens for other's in rules... i had in past some problems with connection stability, but everything went away after i stoped accessing web page of heishamon at all.

IgorYbema#138 (comment)
kamaradclimber/heishamon-homeassistant#248 (comment)

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 5 days.