Having trouble subscribing

stefandreyer / CODESYS-MQTT

MQTT client library for CODESYS, supporting all QoS

MIT License

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Having trouble subscribing #65

Open DBraszak opened 8 months ago

DBraszak commented 8 months ago

Hello Stefan,

Following your documentation I have succesfully Published payload into the broker and received it on the other application, but I'm having an issue with Timeout during subscribing to a topic:

I have spent some time trying to debug it, but I'm out of ideas.

I would appreciate some help! Thanks in advance.

stefandreyer commented 8 months ago

Hi,

in the ClientFB there is a error History, is there any entry? Maybe the broker resets the connection. Which broker do you use?

Can you make a Wireshark snipped for the subscription attemp?

BR Stefan

DBraszak commented 8 months ago

Error history looks empty:

Wireshark scan starting from CPU start:

So basically nothing happened on the network after switching on the Subscribe input.

My setup: CODESYS Control Win V3 - x64 on my laptop

MQTT Mosquitto broker hosted on and Rapsberry PI 4b with Home Assistant OS

Subscribing from my laptop through the command line with mosquitto_sub works correctly with the same parameters.

stefandreyer commented 8 months ago

Hi,

is your dynamic memmory big enough? Check if CreatDynamicContentFailed is set in ClientFB, if so, increase dynamic memory ammount.

Hint for this, the Pointer to the history is zero.

BR Stefan