UDP listen for connection on port 12344

[GregEigsti]

I have made rryan's fix locally in the user contrib code; will be checking it in later today. If you are a UDP user please let me know if this fix makes UDP more stable for you.

WARNING - I will make sure stuff builds but am not going to test it - famous last words

[karmakazi]

Thanks Greg. I won't be able to try it today but I will get to it this week.

If it is the same change that I made to my code then I can tell you it does indeed prevent the UDP connection from locking to the first port that connects to it... but I have found something else that I have having a hard time duplicating in a reliable way. Sometimes the connection will not accept data right away... but if you hammer at it with a bunch of packets it will relent and connect.

These seem to be the conditions under which it happens (like I said I need to do more testing):
1) If I don't connect to the wishield right away.
2) The network is infrastructure mode
3) No security

My first hypothesis is that other UDP packets on the network are causing issues.

[GregEigsti]

Thanks! Maybe give this a try - I have not read all of the code today...

Was wondering if the following would help (did not add to user contrib code)

Code: Select all

   // currently in user contrib - this code commented out
   // if (uip_udp_conn->rport == 0) {
   //    uip_udp_conn->rport = UDPBUF->srcport;
   // }

   // should this be added to set rport in case it somehow gets set to non 0???
   uip_udp_conn->rport = 0;


I am still not convince that this is the best fix since rport information is lost; I think a better change might be to alter the (large) conditional above this code. But then I did not take the time or make the effort so I won't whine (much)

Keep us informed on your progress. Hmm, I should set up my UDP stress test with this fix in place...

Getting tired, work tomorrow...
Greg

[karmakazi]

Sorry Greg,

The real world keeps pulling me away. I have not tried your change yet but I thought I would let you know that these issues connecting do not happen if I connect directly through ADHOC mode.

Cheers,
Andrew