多线程实现客户-服务器结构的一个例子-Multithreading to achieve client-server structure of an example

用UICI库实现了父服务器策略。父进程接受客户机连接并创建出一个子进程来调用copyfile，这样父进程就可以继续等待连接了。-By UICI library implements strategy for the parent server. The parent process to accept the client connections and creates a child process to call copyfile, so the parent process can con