After pairing ESP with google IoT core ESP is subscribing to two topics: my/topic and proper one.
How to remove subscribing to my/topic
This is up to your mqtt server api.
Usually you send a message to some especific topic or with a specific payload.
How is it up to my mqtt serwer?
Look the mqtt how to unsubscribe it.
Are you sure you don’t subscribe to it in your code? Because I don’t see any subscribe to this topic in any library.
Could you provide a minimal example code to reproduce it, please?
I don’t use any mqtt command in main.c
I just solved this issue, I removed mjs lib from mos.yml
Cesanta should look closer at this.