一个基于UDP方式的客户-服务端示例程序。用的是文档/视结构实现。 解压后，有两个目录，分别是客户端程序与服务端程序，是一个好的网络编程入门学习实例，简单，全面-UDP-based codes for service client program. Using a document/view structure. After decompression, there are two directories, which are client and services, is a good