Skype电话协议分析  

Analysis of Skype Telephone Protocol

作　　者：蔡方萍[1] 王继军 

机构地区：[1]萍乡高等专科学校 [2]萍乡温盘中学,江西萍乡337055

出　　处：《萍乡高等专科学校学报》2006年第3期38-42,共5页Journal of Pingxiang College

摘　　要：Skype是2003年由KaZaa开发的点对点宽频电话客户端。Skype做到几乎无缝地穿越网络地址转换和防火墙,并且比MSN和Yahoo等即时讯息软件具有更佳的语音质量。它实现端到端的呼叫加密,并以分布式存储用户信息。Skype也支持即时讯息和会议。本文分析Skype的主要功能,例如注册,穿越NAT和防火墙,呼叫建立,媒体传输,编解码以及在三种不同网络设置下的会议通讯。Skype is a peer-to-peer VolP client developed by Ka Zaa in 2003.Skype claims that it can work almost seamlessly across NATs and firewalls and has better voice quality than the MSN and Yahoo IM applications. It encrypts calls end-to-end, and stores user information in a decentralized fashion. Skype also supports instant messaging and conferencing. This report analyzes key Skype functions such as login, NAT and firewall traversal, call establishment, media transfer, nodes, and conferencing under three different network setups.

关 键 词：点对点 网络电话 超级节点 用户数据简单传输协议 网络地址解析 

分 类 号：TN915[电子电信—通信与信息系统]