Re: [lwip-users] lwip crashing, apparently in sys_check_timeouts

[Sergio R. Caprile]

You can just check the code yourself, but no, sys_check_timeouts()
should return asap since it is meant to be called as frequently as
possible (afap?) and living in the main loop of many systems.
However, from time to time, something needs to be done, like for example
resending a TCP segment, so it will do something. It does call a system
function you provide, though, to get current time in ms. You should
first check for blocking there, and then perhaps try to discover the
whole scenario to get a clue on where the dragon is lurking. Did you
happen to log the traffic so you can correlate crashes to (for example)
retransmissions ?
Just rambling.