说明：  给出基于TCPIP 协议的Windows 套接字编程设计方法及部分源程序, 并在局域网上通过了调试应用, 实现了基于TCPIP 协议下准确、方便地在服务器和客户端间的文件收发。
(Given that the Windows Sockets programming design method based on the TCPIP protocol and some source code, and debugging applications on the LAN by achieve accurate TCPIP protocol-based, easily send and receive files between the server and client.)