用C#Socket实现点对点的文件传输，利用4个类的建立来实现-C# Socket point-to-point file transfer, using four categories to achieve the establishment

采用C#做的局域网内P2P文件传输，可以对多个人同时传输多个文件,内有详细说明文档和程序代码。-C# to do with P2P file transfer within a local area network, multiple people can simultaneously transfer multiple files, with detailed documentation and program code.

c#实现p2p文件共享，①、按P2P原理规划一文件共享程序； ②、支持文件检索； ③、支持客户端间点对点直接文件传输； ④、支持文件共享信息维护（添加、删除、修改）； ⑤、支持服务端之间的共享信息交互；-c# achieve p2p file sharing, ①, according P2P principle planning a file-sharing program ②, support document retrieval ③, support for d