It is the use of UDP Through NAT one of the tenets of the source code, In this regard interested programmers, it is definitely a missing left off.

Packet : 33753149p2pandnat.rar filelist
P2P_by_shootingstars\P2P\Exception.h
P2P_by_shootingstars\P2P\P2PClient\P2PClient.cpp
P2P_by_shootingstars\P2P\P2PClient\P2PClient.dsp
P2P_by_shootingstars\P2P\P2PClient\P2PClient.dsw
P2P_by_shootingstars\P2P\P2PClient\P2PClient.ncb
P2P_by_shootingstars\P2P\P2PClient\P2PClient.opt
P2P_by_shootingstars\P2P\P2PClient\P2PClient.plg
P2P_by_shootingstars\P2P\P2PClient\P2PClient.sln
P2P_by_shootingstars\P2P\P2PClient\P2PClient.suo
P2P_by_shootingstars\P2P\P2PClient\P2PClient.vcproj
P2P_by_shootingstars\P2P\P2PClient
P2P_by_shootingstars\P2P\P2PServer\P2PServer.cpp
P2P_by_shootingstars\P2P\P2PServer\P2PServer.dsp
P2P_by_shootingstars\P2P\P2PServer\P2PServer.dsw
P2P_by_shootingstars\P2P\P2PServer\P2PServer.ncb
P2P_by_shootingstars\P2P\P2PServer\P2PServer.opt
P2P_by_shootingstars\P2P\P2PServer\P2PServer.plg
P2P_by_shootingstars\P2P\P2PServer\P2PServer.sln
P2P_by_shootingstars\P2P\P2PServer\P2PServer.suo
P2P_by_shootingstars\P2P\P2PServer\P2PServer.vcproj
P2P_by_shootingstars\P2P\P2PServer
P2P_by_shootingstars\P2P\proto.h
P2P_by_shootingstars\P2P\readme.txt
P2P_by_shootingstars\P2P\UDP穿越NAT.TXT
P2P_by_shootingstars\P2P
P2P_by_shootingstars
P2P之UDP穿透NAT的原理与实现.txt

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