Hi,
while browsing through the Q&A I came across this thread:
How to recover a nRF9160 from sporadic ENETDOWN
Conclusion is: if a (UDP socket) sendto returns en errno of ENETDOWN the modem has disconnected and I am supposed to close and reoopen
the socket. Fine.
But honestly, without randomly browsing through Q&A how should I have known this? Is there any documentation on how to
"just keep the network up and be able to send data?". Without finding this I would have guessed that, ok, network is down, it
will reconnect and my socket will work again.
Are there other cases of errors that do not recover by themselfes and action by the application is required?
I am aware that the action is application depended (how log to wait until trying reconnect to not drain batteries or stuff like this).
And yes I am supposed to do testing. But handing rare cases is hard to test and trying to find out the "black box" behavior by testing
is also hard.
A writeup of what can happen on how the application should react would be really nice. Or is there allready an overview?
Spending hours in the Q&A browsing through topics to find out if there is an other case I need to act on is not really
a solution.
Regards,
Clemens
