计算机网络课程设计报告-聊天程序

计算机网络课程设计报告题目：网络聊天程序的设计与实现

姓名：申超明学号：0705010313班级：计算机3班指导老师：文宏湖南科技大学计算机科学与工程学院2010年9月

一：实验名称网络聊天程序的设计与实现二：实验目的 了解Socket通信的原理，并通过程序实现通信的过程。三：实验要求熟悉Socket程序通信过程，熟悉在通信过程中流之间的转换。程序中熟悉灵活运用线程执行相关操作。四：实验原理Socket通信的原理还是比较简单的，它大致分为以下几个步骤。服务器端的步骤如下：建立服务器端的Socket，开始侦听整个网络中的连接请求。当检测到来自客户端的连接请求时，向客户端发送收到连接请求的信息，并建立与客户端之间的连接。当完成通信后，服务器关闭与客户端的Socket连接。客户端的步骤如下：建立客户端的Socket，确定要连接的服务器的主机名和端口。发送连接请求到服务器，并等待服务器的回馈信息。连接成功后，与服务器进行数据的交互。数据处理完毕后，关闭自身的Socket连接。

五：程序截图：图1-服务器端启动服务器 图2-客户端连接数据库图3-客户端发送消息图4-服务器段接收客户端发送过来的消息六：程序代码：Qserver.csusingSystem;usingSystem.Collections.Generic;usingSystem.ComponentModel;usingSystem.Data;usingSystem.Drawing;usingSystem.Text;usingSystem.Windows.Forms;usingSystem.IO;usingSystem.Net;usingSystem.Net.Sockets;usingSystem.Threading;namespaceWindowsApplication2{publicpartialclassqserver:Form{publicqserver(){InitializeComponent();}privatestringipv4;privatevoidForm1_Load(objectsender,EventArgse){IPAddress[]ip=Dns.GetHostAddresses(Dns.GetHostName());ipv4=ip[0].ToString();this.label4.Text=ipv4;}TcpListenertcpls;Socketsk;NetworkStreamns;StreamReadersr;StreamWritersw;Threadtred;privatevoidbutton1_Click(objectsender,EventArgse){tcpls=newTcpListener(1235);tcpls.Start();MessageBox.Show("服务器已启动");this.button1.Enabled=false;sk=tcpls.AcceptSocket();MessageBox.Show("客户端已连接");ns=newNetworkStream(sk);sr=newStreamReader(ns,Encoding.UTF8);sw=newStreamWriter(ns,Encoding.UTF8);}stringsmessage="";privatevoidbutton2_Click(objectsender,EventArgse){this.textBox1.Focus();tred=newThread(newThreadStart(this.acceptcm));tred.Start();this.textBox2.Focus();}privatevoidbutton3_Click(objectsender,EventArgse){sendtoc();this.textBox2.Focus();}privatevoidtextBox2_KeyPress(objectsender,KeyPressEventArgse){if(e.KeyChar=='\r')sendtoc();}privatevoidacceptcm(){lock(this){try{if(sr.ReadLine()!=null){this.textBox1.Text+=sr.ReadLine();}elsereturn;}catch(System.Exceptionex){}finally{tred.Abort();}}}publicvoidsendtoc(){try{smessage="\r\n"+this.textBox3.Text+"("+DateTime.Now.ToLongTimeString()+")"+""+this.textBox2.Text;this.textBox1.Text+=smessage;this.textBox2.Clear();sw.WriteLine(smessage);sw.Flush();}catch{MessageBox.Show("服务器端错误");}}privatevoidqserver_FormClosed(objectsender,FormClosedEventArgse){if(tcpls!=null)tcpls.Stop();//if(tred!=null)//tred.Abort();Application.Exit();}}}

客户端代码：usingSystem;usingSystem.Collections.Generic;usingSystem.ComponentModel;usingSystem.Data;usingSystem.Drawing;usingSystem.Text;usingSystem.Windows.Forms;usingSystem.IO;usingSystem.Net;usingSystem.Net.Sockets;usingSystem.Threading;namespaceClient{publicpartialclassqclient:Form{publicqclient(){InitializeComponent();}TcpClienttcpct;NetworkStreamns;StreamReadersr;StreamWritersw;Threadtrdc;///<summary>///连接服务器操作，发送socket请求///</summary>///<paramname="sender"></param>///<paramname="e"></param>privatevoidbutton1_Click(objectsender,EventArgse){try{stringip=this.textBox4.Text+"."+this.textBox5.Text+"."+this.textBox6.Text+"."+this.textBox7.Text;tcpct=newTcpClient(ip,1235);ns=tcpct.GetStream();sr=newStreamReader(ns);sw=newStreamWriter(ns);this.button1.Enabled=false;}catch{MessageBox.Show("请确认是否开启服务器...");}}stringcmessage="";///<summary>///发送消息事件///</summary>///<paramname="sender"></param>///<paramname="e"></param>privatevoidbutton2_Click(objectsender,EventArgse){try{sendtos();}catch{//MessageBox.Show("出错啦!"+"\r\n"+"1.你是否已经连接服务器?"+"\r\n"+"2.等待服务器发回消息.");}finally{this.textBox2.Focus();}}///<summary>///发送函数///</summary>publicvoidsendtos(){if(this.textBox2.Text=="")//发送{MessageBox.Show("内容不能为空");return;}else{cmessage="("+DateTime.Now.ToLongTimeString()+")"+"\r\n"+this.textBox3.Text+this.textBox2.Text;this.textBox1.Text+=cmessage;this.textBox2.Clear();//savechathistrory();sw.WriteLine(cmessage);sw.Flush();}}///<summary>///接收函数///</summary>publicvoidacceptsm(){lock(this){try//接收{this.textBox1.Text+=sr.ReadLine()+"\r\n";//savechathistrory();}catch{//MessageBox.Show("出错啦!"+"\r\n"+"1.你是否已经连接服务器?"+"\r\n"+"2.没有服务器消息.");}finally{trdc.Abort();}}}///<summary>///接收消息事件///</summary>///<paramname="sender"></param>///<paramname="e"></param>privatevoidbutton3_Click(objectsender,EventArgse){this.textBox1.Focus();trdc=newThread(newThreadStart(acceptsm));trdc.Start();this.textBox2.Focus();}///<summary>///保存历史记录，未做.///</summary>privatevoidsavechathistrory(){StreamWriterfsw=newStreamWriter(Application.UserAppDataPath+"chathistory.txt",false,Encoding.UTF8);sw.WriteLine(this.textBox1.Text);fsw.Flush();fsw.Close();}///<summary>///文件关闭之后，关闭客户端，关闭活动的线程///</summary>///<paramname="sender"></param>///<paramname="e"></param>privatevoidqclient_FormClosed(objectsender,FormC