用VC编写的socket小程序，有客户端和服务端，两者3次握手建立连接，用到了最基本的socket，bind，listen，send，receive，函数，非常适合初学者，我就是用这个例子学习的socket编程，很经典的例子有，还有小界面-Socket using a small program written in VC, there are client and server, the two three-way handshake to establish a connection, us