介绍P2P原理的资料，是作为课件的ppt，值得一看

简单C#编写的P2P网络编程，拥有简单界面。压缩包包含源码、课件，程序可直接运行。-Simply written in C# P2P network programming, with a simple interface. Archive contains the source code, courseware, the program can be run directly.