RE: [lwip-devel] lwIP UDP and TFTP

[Zschocke, Florian]

Atte Kojo wrote on Wednesday, November 26, 2003 1:49 PM:

> I have to netconn_connect() to the tftp server address:port in
> order to send a request there.

I suspect you use the raw API? If you take a look at the lwip_sendto()
function in sockets.c, you will see that for an unconnected send (which
sendto is) the code will do a netconn_connect(), send the packet and do an
netconn_disconnect() directly afterwards. I would consider this a cleaner
solution that modifying the code to not set UDP_FLAGS_CONNECTED. 

Coming to think of it, has anyone ever checked if this could lead to a race
condition causing packet loss when an interrupt delivers an incoming packet
while UDP_FLAGS_CONNECTED is still set?

Florian