P2P网络中利用JXTA穿越NAT的方法研究

Study of using JXTA to traverse NAT in P2P networks

P2P是当今网络技术的研究热点,如何在对等节点之间建立有效的连接也成为影响P2P应用的一个关键问题,但由于NAT设备的大量存在,使得因特网中的对等节点很难与NAT后的对等节点建立有效的连接。在分析了NAT的基本原理、阻碍对等节点之间通信的原因以及已有的解决方法的基础上,提出了一个基于JXTA的端点和管道技术的解决方案并给出一个开发实例。

P2P is a hot focus of network technology, and how to build connection between peers becomes a key problem that affects P2P applications. Because NAT is widly used, it is very hard to build connection with the peers behind NAT for the peers in internet. With the analysis of basic principle and the reasons of blocking correspondence and existing solutions, a new solution based on endpoint and pipe which is provided by JXTA and an example is given.