P2P System Not Relaying Messages properly

[AlecSadler]

Hello all, I am working on a P2P(Peer to peer) messenger, when I want to send a message over a direct connection it works fine, but when I try to relay a message it wont relay 90% of the time, I was wondering if someone could take a look at it and try to figure out why it doesnt want to relay messages(only deliver them direct)

My code is attached

Secure Interface Module.zip

[AlecSadler]

I think the P2P.au3 is bugged somehow. It's a version that I previously modified and released on here, I think I fixed the problem by reverting to the original P2PTCP.au3 UDF, still, if anyone can get my modified version working properly that would be swell, because in all honestly it's a lot more compatible with IM type applications (uses headers, regex, and doesn't limit characters allowed to be used.)

Edited December 2, 2016 by AlecSadler

[j0kky]

just for curiosity, have you implemented some NAT traversal solution?