can anyone point me to some docs to read, some code examples or some tutorial about CoAP observer?
Starting from CoAP client example, I'm stuck in a point where I, from a client, can ask to a server to observe a topic but I never get notified about changes. Data packages are sent from the server (I can see that with wireshark) but seems that the callback is never called. Maybe I'm missing something...
Debugging is twice as hard as writing the code in the first place.
Therefore, if you write the code as cleverly as possible, you are,
by definition, not smart enough to debug it.
- Brian W. Kernighan