[lwip-users] RAW UDP polling, timeouts, so_options

[ncoage]

Hi,

I am writing TFTP server (by modifying Luminary Micro code) and I wonder how to 
implement timeouts in UDP connections (RAW API). In TCP we have a tcp_poll 
callbacks. Is there something similar in UDP?

Looking at udp_pcb, there is a field called so_options. Where can I find the 
list of the options with descriptions?

Thanks in advance.