网络课程设计-基于UDP的即时通信工具的设计开发.doc

装订线 网络课程设计 题目：基于 udp 的即时通信工具的设计开发 学院：计算机学院班级姓名: 学号：指导教师：2015年7月8日 基于 udp 的即时通信工具的设计开发 1 项目名称 基于 udp 的即时通信工具的设计开发 （1）任务一，设计一个基于 udp 的点对点通信工具，实现点对点的通信，如下图所示，用 户发送的信息将在对方用户中显示，显示内容包括用户名+发送时间+发送内容。 （2） 任务二，设计实现一个基于 udp 的群组即时通信工具，如下图所示，每个用户发送的 信息将在其他用户中显示，显示内容包括用户名+发送时间+发送内容。 二项目目标（1）熟悉 c#.net 开发环境 （2）熟悉 socket 等相关通信组件 （3）通信协议的定义、封装与解析 资料查阅：可以通过socket udp c#, 和socket 异步 udp c#等关键词在网络上了解相关资料。 基于 udp 的群组即时通信工具l 输入聊天人名字l 发送消息给服务器端，并显示服务器端回传的消息l 接受客户端发送的消息，转发消息给客户端，并显示客户端的消息l 使用文件保存聊天信息 三设计与实现1. 服务器端创建套接字（socket）将套接字绑定到一个本地的ip地址及端口上，等待接受对端数据（receive），关闭套接字。2. 客户端创建套接字，向服务器发送数据（send ），关闭套接字。1、 流程图开 始 udpserver服务器socket（） udpclients客户端socket（）bind（）receivesend （） 数据请求 no yes处理请求 数据应答receive （）send （）close（）结 束（图4.1.1总体流程图）开 始读取配置信息启动服务器创建套接字，用于收发信息数据接收包数据接收包发送消息保存配置信息结 束（图4.1.2服务器模块流程2：界面设计 用户界面： （用户登录界面） （用户聊天界面） 服务器界面：（服务器界面） 3：主要的函数1：udpclients/用户端 form.1/用户登录界面 窗体设计代码： private system.windows.forms.textbox password; private system.windows.forms.label label1; private system.windows.forms.textbox username; private system.windows.forms.label label2; private system.windows.forms.button btnlogin; 功能实现函数： private void button2_click(object sender, eventargs e) private void username_textchanged(object sender, eventargs e) private void password_textchanged(object sender, eventargs e) form.2/用户聊天界面窗体设计代码： private system.windows.forms.button btnsend; private system.windows.forms.listbox nowuser; private system.windows.forms.richtextbox sendmessage; private system.windows.forms.label label1; private system.windows.forms.label label2; private system.windows.forms.listbox message;功能实现函数： private bool login()/登陆函数 private void send(string temp)/向服务器发送数据private void btnsend_click(object sender, eventargs e/点击发送按钮发送输入信息 private void listen()/监听函数 private void receive()/启动接收线程 private void form2_formclosing_1(object sender, formclosingeventargs e) /关闭对话框询问是否关闭 private void sendmessage_textchanged(object sender, eventargs e)private void message_selectedindexchanged(object sender, eventargs e) private void form2_load(object sender, eventargs e)private void label2_click(object sender, eventargs e)2：udpserver/服务器 from.1/服务器界面窗体设计代码： private system.windows.forms.listbox serverinformation; private system.windows.forms.listbox message; private system.windows.forms.listbox clientslist; private system.windows.forms.button btndelete; private system.windows.forms.textbox deleteuser; private system.windows.forms.button btnsavemesssage; 功能实现函数：public form1() private int searchclient(string username)/查询username用户是否在列表private bool clientlogin(string receivedata,ipaddress dstip)/登录函数处理用户登录和添加 private bool clientleave(string username)/用户下线函数 private void show()/显示当前服务器信息和在线用户并更新用户列表 private void send(string senddata,int norec)/对在线用户进行群发 private void listen()/监听函数private void receive()/启动接收线程 private void form1_formclosing(object sender, formclosingeventargs e) private void serverinformation_selectedindexchanged(object sender, eventargs e) private void message_selectedindexchanged(object sender, eventargs e) private void textbox1_textchanged(object sender, eventargs e) private void btnsavemesssage_click(object sender, eventargs e)/保存消息日志 private void btndelete_click(object sender, eventargs e)/删除指定用户private void clientslist_selectedindexchanged(object sender, eventargs e)4. 测试结果 五总结与展望在udp聊天器的设计过程中，学习了c#程序。进一步了解了udp的实现功能。加深了对理论知识和c#控件及mfc socket的理解，掌握了socket(),send()和的使用方使我的网络编程能力得到了提高。同时，也发现了许多不足之处，如发送信息的长度受到限制，不能满足用户更多字数的聊天需求，这个问题，将是我今后调整和修改设计的方向。在这次的课程设计中，我充分体会到团队合作的重要性。六源代码udpclient 用户端 登陆：form1designer:namespace udpsever partial class form1 / / 必需的设计器变量。 / private system.componentmodel.icontainer components = null; / / 清理所有正在使用的资源。 / / 如果应释放托管资源，为 true；否则为 false。 protected override void dispose(bool disposing) if (disposing & (components != null) components.dispose(); base.dispose(disposing); #region windows 窗体设计器生成的代码 / / 设计器支持所需的方法 - 不要 / 使用代码编辑器修改此方法的内容。 / private void initializecomponent() this.serverinformation = new system.windows.forms.listbox(); this.message = new system.windows.forms.listbox(); this.clientslist = new system.windows.forms.listbox(); this.btndelete = new system.windows.forms.button(); this.deleteuser = new system.windows.forms.textbox(); this.btnsavemesssage = new system.windows.forms.button(); this.suspendlayout(); / / serverinformation / this.serverinformation.formattingenabled = true; this.serverinformation.itemheight = 15; this.serverinformation.location = new system.drawing.point(212, 51); this.serverinformation.margin = new system.windows.forms.padding(4); this.serverinformation.name = serverinformation; this.serverinformation.size = new system.drawing.size(341, 124); this.serverinformation.tabindex = 0; this.serverinformation.selectedindexchanged += new system.eventhandler(this.serverinformation_selectedindexchanged); / / message / this.message.formattingenabled = true; this.message.itemheight = 15; this.message.location = new system.drawing.point(212, 228); this.message.margin = new system.windows.forms.padding(4); this.message.name = message this.message.size = new system.drawing.size(341, 229); this.message.tabindex = 1; this.message.selectedindexchanged += new system.eventhandler(this.message_selectedindexchanged); / / clientslist / this.clientslist.formattingenabled = true; this.clientslist.itemheight = 15; this.clientslist.location = new system.drawing.point(1, 2); this.clientslist.margin = new system.windows.forms.padding(4); this.clientslist.name = clientslist; this.clientslist.size = new system.drawing.size(201, 454); this.clientslist.tabindex = 2; this.clientslist.selectedindexchanged += new system.eventhandler(this.clientslist_selectedindexchanged); / / btndelete / this.btndelete.backcolor = system.drawing.color.fromargb(int)(byte)(192), (int)(byte)(255), (int)(byte)(192); this.btndelete.forecolor = system.drawing.systemcolors.controldarkdark; this.btndelete.location = new system.drawing.point(453, 13); this.btndelete.margin = new system.windows.forms.padding(4); this.btndelete.name = btndelete; this.btndelete.size = new system.drawing.size(100, 29); this.btndelete.tabindex = 3; this.btndelete.text = 删除用户; this.btndelete.usevisualstylebackcolor = false this.btndelete.click += new system.eventhandler(this.btndelete_click); / / deleteuser / this.deleteuser.location = new system.drawing.point(212, 18); this.deleteuser.margin = new system.windows.forms.padding(4); this.deleteuser.name = deleteuser; this.deleteuser.size = new system.drawing.size(203, 25); this.deleteuser.tabindex = 4; this.deleteuser.textchanged += new system.eventhandler(this.textbox1_textchanged); / / btnsavemesssage / this.btnsavemesssage.backcolor = system.drawing.color.fromargb(int)(byte)(255), (int)(byte)(255), (int)(byte)(192); this.btnsavemesssage.forecolor = system.drawing.systemcolors.controldarkdark; this.btnsavemesssage.location = new system.drawing.point(405, 191); this.btnsavemesssage.margin = new system.windows.forms.padding(4); this.btnsavemesssage.name = btnsavemesssage; this.btnsavemesssage.size = new system.drawing.size(148, 29); this.btnsavemesssage.tabindex = 5; this.btnsavemesssage.text = 保存消息记录; this.btnsavemesssage.usevisualstylebackcolor = false; this.btnsavemesssage.click += new system.eventhandler(this.btnsavemesssage_click); / / form1 / this.autoscaledimensions = new system.drawing.sizef(8f, 15f); this.autoscalemode = system.windows.forms.autoscalemode.font; this.backcolor = system.drawing.systemcolors.gradientactivecaption; this.clientsize = new system.drawing.size(581, 468); this.controls.add(this.btnsavemesssage); this.controls.add(this.deleteuser); this.controls.add(this.btndelete); this.controls.add(this.clientslist); this.controls.add(this.message); this.controls.add(this.serverinformation); this.margin = new system.windows.forms.padding(4); this.name = form1; this.text = 服务器; this.formclosing += new system.windows.forms.formclosingeventhandler(this.form1_formclosing); this.load += new system.eventhandler(this.form1_load); this.resumelayout(false); this.performlayout(); #endregion private system.windows.forms.listbox serverinformation; private system.windows.forms.listbox message; private system.windows.forms.listbox clientslist; private system.windows.forms.button btndelete; private system.windows.forms.textbox deleteuser; private system.windows.forms.button btnsavemesssage; from1.csusing system;using system.collections.generic;using system.componentmodel;using system.data;using system.drawing;using system.linq;using system.text;using system.windows.forms;namespace udpclients public partial class form1 : form public form1() initializecomponent();/初始化工作 加载控件资源 分配资源 private void button2_click(object sender, eventargs e) user.username = username.text.tostring(); user.userkey = password.text.tostring(); this.dialogresult = dialogresult.ok; /表示点击按钮关闭窗口 private void form1_load(object sender, eventargs e)/分配窗口使用资源 private void username_textchanged(object sender, eventargs e) private void password_textchanged(object sender, eventargs e) program.cs using system;using system.collections.generic;using system.linq;using system.windows.forms;namespace udpclients static class program / / 应用程序的主入口点。 / stathread static void main() application.enablevisualstyles(); application.setcompatibletextrenderingdefault(false); application.run(new form2(); user.csusing system;using system.collections.generic;using system.linq;using system.text;using system.net;using system.net.socketsnamespace udpclients class user/本地用户类 public static string username;/y用户名 public static string userkey;/用户密码 public static int myrecport;/本地接收端口号 聊天：form2.designer:namespace udpclients partial class form2 / / required designer variable. / private system.componentmodel.icontainer components = null;/ / clean up any resources being used. / / true if managed resources should be disposed; otherwise, false. protected override void dispose(bool disposing) if (disposing & (components != null) components.dispose(); base.dispose(disposing); #region windows form designer generated code / / required method for designer support - do not modify / the contents of this method with the code editor. / private void initializecomponent() system.componentmodel.componentresourcemanager resources = new system.componentmodel.componentresourcemanager(typeof(form2); this.btnsend = new system.windows.forms.button(); this.nowuser = new system.windows.forms.listbox(); this.sendmessage = new system.windows.forms.richtextbox(); this.message = new system.windows.forms.listbox(); this.label1 = new system.windows.forms.label(); this.label2 = new system.windows.forms.label(); this.suspendlayout(); / btnsend / this.btnsend.location = new system.drawing.point(551, 299); this.btnsend.margin = new system.windows.forms.padding(4, 4, 4, 4); this.btnsend.name = btnsend; this.btnsend.size = new system.drawing.size(127, 56); this.btnsend.tabindex = 0; this.btnsend.text = 发送; this.btnsend.usevisualstylebackcolor = true; this.btnsend.click += new system.eventhandler(this.btnsend_click); / / nowuser / this.nowuser.formattingenabled = true; this.nowuser.itemheight = 15; this.nowuser.location = new system.drawing.point(29, 29); this.nowuser.margin = new system.windows.forms.padding(4, 4, 4, 4); this.nowuser.name = nowuser; this.nowuser.size = new system.drawing.size(119, 259); this.nowuser.tabindex = 1; / / sendmessage / this.sendmessage.location = new system.drawing.point(177, 305); this.sendmessage.margin = new system.windows.forms.padding(4, 4, 4, 4); this.sendmessage.name = sendmessage; this.sendmessage.size = new system.drawing.size(364, 42); this.sendmessage.tabindex = 2; this.sendmessage.text = ; this.sendmessage.textchanged += new system.eventhandler(this.sendmessage_textchanged); / / message / this.message.backcolor = system.drawing.color.white; this.message.font = new system.drawing.font(微软雅黑, 9f, system.drawing.fontstyle.regular, system.drawing.graphicsunit.point, (byte)(134); this.message.formattingenabled = true; this.message.itemheight = 20; this.message.location = new system.drawing.point(177, 31); this.message.margin = new system.windows.forms.padding(4, 4, 4, 4); this.message.name = message; this.message.size = new system.drawing.size(499, 244); this.message.tabindex = 3; this.message.selectedindexchanged += new system.eventhandler(this.message_selectedindexchanged); / / label1 / this.label1.autosize = true; this.label1.backcolor = system.drawing.systemcolors.gradientactivecaption; this.label1.location = new system.drawing.point(175, 9); this.label1.margin = new system.windows.forms.padding(4, 0, 4, 0); this.label1.name = label1; this.label1.size = new system.drawing.size(67, 15); this.label1.tabindex = 5; this.label1.text = 聊天记录; / / label2 / this.label2.autosize = true; this.label2.backcolor = system.drawing.systemcolors.gradientactivecaption; this.label2.location = new system.drawing.point(29, 9); this.label2.margin = new system.windows.forms.padding(4, 0, 4, 0); this.label2.name = label2; this.label2.size = new system.drawing.size(67, 15); this.label2.tabindex = 6; this.label2.text = 用户列表; this.label2.click += new system.eventhandler(this.label2_click); / / form