用C语言的并发套接字编程的典型例子，对于正在学习网络编程并且有一定基础的人 是不错的资料 里面还有相关的说明资料-Concurrent use of C language programming socket a typical example, are learning about network programming and have a certain person is the basis of the information there is also a good descr ip

这是一个基于windows的互联网错误退出程序，当连接出错时，调用这个程序，退出连接-This is a windows-based Internet error exit the program when the connection error, call this procedure to exit the connection