I test p2p in different net connection with my two friends, I have come across a strange problem.
first ,friend A and me connect to p2p server ,both of us NetConnection and NetGroup are success, but there is no Neighbor.Connect message response. so we can't communicate with each other.
then, friend B connect to p2p server, he got two Neighbor.Connect response. then i can't communicate with friend A.
but as i konw , if members of NetGroup is less than 14 , all of members in group are neighbors. why friend A and me is not neighbor ?
perhaps the combination of your NAT and friend A's NAT is not compatible for P2P, but friend B's NAT is able to work with both yours and friend A's for P2P.