网络程序和普通程序的最大区别就是网络程序分为两个部分：客户端和服务器端。

网络程序是服务器端先启动，等待客户端的连接。一般服务器端绑定在一个端口进行监听，直到有一个客户端发来了请求。-Network program and procedures biggest difference is the network program is divided into two parts: the client and server side. The network program is a server-side first start, waiting for a client connection. General server-side is bound to a port listener, until a client sent the request.