P2P网络中IP音频流穿越NAT的设计与实现

近年来，基于P2P网络的IP音频流媒体技术得到了迅速的发展和广泛的应用。但是，在P2P网络中，由于NAT设备的普遍存在使得外部主机不能主动向位于NAT后面的主机发起通信，这阻碍了VOIP技术的发展和应用。基于实际开发需求，文章在TURN和STUN协议的基础上总结了一种穿越NAT的解决方案，并建立了相应的通信协议。经测试，该方案可以较好地穿越NAT，有利于提高P2P网络的连通性，为实际应用提供有价值的参考。

Design and Implementation for IP Audio Stream to Traverse NAT in P2P Network

In recent years, the IP audio stream media technology based on P2P network has been rapidly developed and widely used. However, the NAT device, which is ubiquitous in P2P network, prevents the public host from actively communicating with the one on the back of a NAT device. This has been a barrier to the development and application of VOIP technology. Based on practical requirements, this paper presents a solution to traversing NAT, which is helpful in enhancing the connectivity of a P2P network and also serves as a valuable reference for many practical applications.