Windows Socket 编程 实验报告计算机网络.doc

实 验 报 告 实验名称 Windows Socket 编程 课程名称 计算机网络 Windows Socket 编程 实验报告 实验目的 掌握网络应用程序的开发方法； 掌握Client/Server结构软件的设计与开发方法； 掌握Socket机制的工作原理。 实验环境 操作系统：windows 7 旗舰版 开发环境：Visual Studio 2010，VC6桌号、机器IP地址等） 寝室号：韵苑23栋236室 IP地址：5 实验内容与结果 运行simplex-talk程序，理解代码并观察现象。 实验原理与实验过程在实验指导书上论述的较为详尽，在此不赘述。 修改simplex-talk程序，编制Duplex-talk程序，支持client与server的双向通信。 功能概述 Client端程序连接Server端程序，Client能给Server发送信息，同时Server也能给Client发送信息，实现双向通信。 编译源文件，生成可执行文件并运行，其过程如下： Client端 Socket端 server.exe [duplex-talk server] server is ready in listening ... client.exe localhost [duplex-talk server] received a connection from : [duplex-talk client] connection to localhost is ready [duplex-talk client] please input your message (empty input to halt): How are you? [duplex-talk client] send chars to server [duplex-talk server] received chars Fine,thanks. [duplex-talk client] received 14 chars I like programming [duplex-talk client] send 5 chars to server [duplex-talk server] received chars Me too.And I a m Geek [duplex-talk server] empty message is send to client [simplex-talk server] connection from is terminated [duplex-talk client] empty message is received [duplex-talk client] connection is terminated 利用windows时间函数，编制一个简单的定时器，模拟client和server之间的stop-and-wait的动作。 功能概述 客户端模仿sender，发送三个报文；服务器模拟receiver，回复ACK。客户和服务器分别维持自己的时钟（例如5ms），如果超时就报错。试模拟下面的四种停止等待协议可能出现的情况： 正常; (b)ACK丢失； (c)Frame丢失； (d)超时设置过短。 编译源文件，生成可执行文件并运行，其过程如下： Client端 Socket端 server.exe [时间] server is ready in listening ... client.exe localhost [时间] received a connection from : [时间] connection to localhost is ready [时间] please input your message (empty input to halt): case1 [21:04:26.181] send 5 chars to server [21:04:30.983] OverTime [21:04:30.983] ReSending Frame! [21:04:35.785] ACK Arrived! [21:04:27.382] Frame is received [21:04:27.382] ACK is sent! [21:04:32.183] Frame is received [21:04:32.183] ACK is sent! case2 [21:04:40.270] send 5 chars to server [21:04:47.469] OverTime [21:04:47.469] ReSending Frame! [21:04:52.272] ACK Arri