用于测试的tcp服务端，VC编写，绝对好用！-test for the tcp server, VC preparation, absolute handy!

采用VC实现局域网内点对点的通信，无需服务器支持，通信采用TCP协议，实现了远程身份认证和对数据的加密-LAN using VC to achieve point-to-point communications, without server support, communications using TCP protocol, the realization of a remote authentication and encryption of data

基于tcp/ip的网络通讯编程测试，适合初学者学习。-Based on tcp/ip network communication programming test, suitable for beginners to learn.