P2P穿透NAT的一次探讨和局部实现，希望有兴趣的同志可以在此基础上真正实现peertopeer！-P2P NAT a penetrating exploration and partial realization, hope that the comrades are interested in the real basis of this realization peertopeer!

最近几年，对等计算( Peer-to-Peer，简称P2P) 迅速成为计算机界关注的热门话题之一，财富杂志更将P2P列为影响Internet未来的四项科技之一。-In recent years, peer-to-peer computing (Peer-to-Peer, referred to as P2P) computer industry is rapidly becoming a hot topic, one of Fortune magazine will affect the Int