基于UDP协议P2P通信技术的分析及实现

The Realization and Analysis of P2P Communication Based on UDP

处于Internet上的主机或处于NAT(Network Address Translation,网络地址转换协议)之后的主机与网内主机建立对等连接是实现P2P(Peer-To-Peer,点对点)通信的关键.本文在分析了基于UDP(User Datagram Protocol,用户数据报)协议穿透NAT的实现原理的基础上,给出了一个基于UDP协议P2P通信的实现方案.

The problem that an internal host can initiate a connection to an extemal host or to another internal one is the crux in the realization of P2P（peer to peer） conannnications to realize peer to peer connection in spite of that they are.behind different NAT（Network Address Translation）. This paper discusses the principle of the NAT traversal