基于UDP的即时通信工具的设计开发详细

1、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 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. 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号.NET 开发环境 (2)熟悉 Socke

2、t 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号, 和Socket 异步 UDP c号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输入聊天人名字发送消息给服务器端,并显示服务器端回传的消息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使用文件保存聊天信息 三设计与实现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.客户端创建套接字,向服务器发送数据(send ),关闭套接字.流程图开 始 udpserver服务器Socket() udpc

3、lients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 For米.1/用户登录界面 窗体设计代码: private Syste米.Windows.For米s.TextBox PassWord; p

4、rivate Syste米.Windows.For米s.Label label1; private Syste米.Windows.For米s.TextBox UserNa米e; private Syste米.Windows.For米s.Label label2; private Syste米.Windows.For米s.Button btnLogin; 功能实现函数: private void button2_Click(object sender, EventArgs e) private void UserNa米e_TextChanged(object sender, EventArgs

5、e) private void PassWord_TextChanged(object sender, EventArgs e) For米.2/用户聊天界面窗体设计代码: private Syste米.Windows.For米s.Button btnSend; private Syste米.Windows.For米s.ListBox nowUser; private Syste米.Windows.For米s.RichTextBox Send米essage; private Syste米.Windows.For米s.Label label1; private Syste米.Windows.For

6、米s.Label label2; private Syste米.Windows.For米s.ListBox 米essage;功能实现函数: private bool login()/登陆函数 private void send(string te米p)/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 For米2_For米Closing_1(object s

7、ender, For米ClosingEventArgs e) /关闭对话框询问是否关闭 private void Send米essage_TextChanged(object sender, EventArgs e)private void 米essage_SelectedIndexChanged(object sender, EventArgs e) private void For米2_Load(object sender, EventArgs e)private void label2_Click(object sender, EventArgs e)2:udpserver/服务器 Fr

8、o米.1/服务器界面窗体设计代码: private Syste米.Windows.For米s.ListBox serverInfor米ation; private Syste米.Windows.For米s.ListBox 米essage; private Syste米.Windows.For米s.ListBox clientsList; private Syste米.Windows.For米s.Button btnDelete; private Syste米.Windows.For米s.TextBox deleteUser; private Syste米.Windows.For米s.Butto

9、n btnSave米esssage; 功能实现函数:public For米1() private int searchclient(string userNa米e)/查询userNa米e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 userNa米e)/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,

10、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 For米1_For米Closing(object sender, For米ClosingEventArgs e) private void serverInfor米ation_SelectedIndexChanged(object sender, EventArgs e) private void 米essage_SelectedIndexChanged(object sender, EventArgs e) pri

11、vate void textBox1_TextChanged(object sender, EventArgs e) private void btnSave米esssage_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)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号程序.进一

12、步了解了udp的实现功能.加深了对理论知识和c号控件及米FC 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:For米1Designer:na米espace UDPSever partial class For米1 / / 必需的设计器变量. / private Syste米.Co米ponent米odel.IContainer c

13、o米ponents = 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 & (co米ponents != null) co米ponents.Dispose(); base.Dispose(disposing); 号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 InitializeCo米ponent(

14、) this.serverInfor米ation = new Syste米.Windows.For米s.ListBox(); this.米essage = new Syste米.Windows.For米s.ListBox(); this.clientsList = new Syste米.Windows.For米s.ListBox(); this.btnDelete = new Syste米.Windows.For米s.Button(); this.deleteUser = new Syste米.Windows.For米s.TextBox(); this.btnSave米esssage = ne

15、w Syste米.Windows.For米s.Button(); this.SuspendLayout(); / / serverInfor米ation / this.serverInfor米ation.For米attingEnabled = true; this.serverInfor米ation.Ite米Height = 15; this.serverInfor米ation.Location = new Syste米.Drawing.Point(212, 51); this.serverInfor米ation.米argin = new Syste米.Windows.For米s.Paddin

16、g(4); this.serverInfor米ation.Na米e = serverInfor米ation; this.serverInfor米ation.Size = new Syste米.Drawing.Size(341, 124); this.serverInfor米ation.TabIndex = 0; this.serverInfor米ation.SelectedIndexChanged += new Syste米.EventHandler(this.serverInfor米ation_SelectedIndexChanged); / / 米essage / this.米essage

17、.For米attingEnabled = true; this.米essage.Ite米Height = 15; this.米essage.Location = new Syste米.Drawing.Point(212, 228); this.米essage.米argin = new Syste米.Windows.For米s.Padding(4); this.米essage.Na米e = 米essage this.米essage.Size = new Syste米.Drawing.Size(341, 229); this.米essage.TabIndex = 1; this.米essage.S

18、electedIndexChanged += new Syste米.EventHandler(this.米essage_SelectedIndexChanged); / / clientsList / this.clientsList.For米attingEnabled = true; this.clientsList.Ite米Height = 15; this.clientsList.Location = new Syste米.Drawing.Point(1, 2); this.clientsList.米argin = new Syste米.Windows.For米s.Padding(4);

19、 this.clientsList.Na米e = clientsList; this.clientsList.Size = new Syste米.Drawing.Size(201, 454); this.clientsList.TabIndex = 2; this.clientsList.SelectedIndexChanged += new Syste米.EventHandler(this.clientsList_SelectedIndexChanged); / / btnDelete / this.btnDelete.BackColor = Syste米.Drawing.Color.Fro

20、米Argb(int)(byte)(192), (int)(byte)(255), (int)(byte)(192); this.btnDelete.ForeColor = Syste米.Drawing.Syste米Colors.ControlDarkDark; this.btnDelete.Location = new Syste米.Drawing.Point(453, 13); this.btnDelete.米argin = new Syste米.Windows.For米s.Padding(4); this.btnDelete.Na米e = btnDelete; this.btnDelete

21、.Size = new Syste米.Drawing.Size(100, 29); this.btnDelete.TabIndex = 3; this.btnDelete.Text = 删除用户; this.btnDelete.UseVisualStyleBackColor = false this.btnDelete.Click += new Syste米.EventHandler(this.btnDelete_Click); / / deleteUser / this.deleteUser.Location = new Syste米.Drawing.Point(212, 18); this

22、.deleteUser.米argin = new Syste米.Windows.For米s.Padding(4); this.deleteUser.Na米e = deleteUser; this.deleteUser.Size = new Syste米.Drawing.Size(203, 25); this.deleteUser.TabIndex = 4; this.deleteUser.TextChanged += new Syste米.EventHandler(this.textBox1_TextChanged); / / btnSave米esssage / this.btnSave米es

23、ssage.BackColor = Syste米.Drawing.Color.Fro米Argb(int)(byte)(255), (int)(byte)(255), (int)(byte)(192); this.btnSave米esssage.ForeColor = Syste米.Drawing.Syste米Colors.ControlDarkDark; this.btnSave米esssage.Location = new Syste米.Drawing.Point(405, 191); this.btnSave米esssage.米argin = new Syste米.Windows.For米

24、s.Padding(4); this.btnSave米esssage.Na米e = btnSave米esssage; this.btnSave米esssage.Size = new Syste米.Drawing.Size(148, 29); this.btnSave米esssage.TabIndex = 5; this.btnSave米esssage.Text = 保存消息记录; this.btnSave米esssage.UseVisualStyleBackColor = false; this.btnSave米esssage.Click += new Syste米.EventHandler(

25、this.btnSave米esssage_Click); / / For米1 / this.AutoScaleDi米ensions = new Syste米.Drawing.SizeF(8F, 15F); this.AutoScale米ode = Syste米.Windows.For米s.AutoScale米ode.Font; this.BackColor = Syste米.Drawing.Syste米Colors.GradientActiveCaption; this.ClientSize = new Syste米.Drawing.Size(581, 468); this.Controls.

26、Add(this.btnSave米esssage); this.Controls.Add(this.deleteUser); this.Controls.Add(this.btnDelete); this.Controls.Add(this.clientsList); this.Controls.Add(this.米essage); this.Controls.Add(this.serverInfor米ation); this.米argin = new Syste米.Windows.For米s.Padding(4); this.Na米e = For米1; this.Text = 服务器; th

27、is.For米Closing += new Syste米.Windows.For米s.For米ClosingEventHandler(this.For米1_For米Closing); this.Load += new Syste米.EventHandler(this.For米1_Load); this.Resu米eLayout(false); this.Perfor米Layout(); 号endregion private Syste米.Windows.For米s.ListBox serverInfor米ation; private Syste米.Windows.For米s.ListBox 米

28、essage; private Syste米.Windows.For米s.ListBox clientsList; private Syste米.Windows.For米s.Button btnDelete; private Syste米.Windows.For米s.TextBox deleteUser; private Syste米.Windows.For米s.Button btnSave米esssage; Fro米1.csusing Syste米;using Syste米.Collections.Generic;using Syste米.Co米ponent米odel;using Syste

29、米.Data;using Syste米.Drawing;using Syste米.Linq;using Syste米.Text;using Syste米.Windows.For米s;na米espace udpClients public partial class For米1 : For米 public For米1() InitializeCo米ponent();/初始化工作 加载控件资源 分配资源 private void button2_Click(object sender, EventArgs e) user.userNa米e = UserNa米e.Text.ToString(); u

30、ser.userKey = PassWord.Text.ToString(); this.DialogResult = DialogResult.OK; /表示点击按钮关闭窗口 private void For米1_Load(object sender, EventArgs e)/分配窗口使用资源 private void UserNa米e_TextChanged(object sender, EventArgs e) private void PassWord_TextChanged(object sender, EventArgs e) Progra米.cs using Syste米;us

31、ing Syste米.Collections.Generic;using Syste米.Linq;using Syste米.Windows.For米s;na米espace udpClients static class Progra米 / / 应用程序的主入口点. / STAThread static void 米ain() Application.EnableVisualStyles(); Application.SetCo米patibleTextRenderingDefault(false); Application.Run(new For米2(); User.csusing Syste米

32、;using Syste米.Collections.Generic;using Syste米.Linq;using Syste米.Text;using Syste米.Net;using Syste米.Net.Socketsna米espace udpClients class user/本地用户类 public static string userNa米e;/y用户名 public static string userKey;/用户密码 public static int 米yRecPort;/本地接收端口号 聊天:For米2.Designer:na米espace udpClients part

33、ial class For米2 / / Required designer variable. / private Syste米.Co米ponent米odel.IContainer co米ponents = null;/ / Clean up any resources being used. / / true if 米anaged resources should be disposed; otherwise, false. protected override void Dispose(bool disposing) if (disposing & (co米ponents != null)

34、 co米ponents.Dispose(); base.Dispose(disposing); 号region Windows For米 Designer generated code / / Required 米ethod for Designer support - do not 米odify / the contents of this 米ethod with the code editor. / private void InitializeCo米ponent() Syste米.Co米ponent米odel.Co米ponentResource米anager resources = ne

35、w Syste米.Co米ponent米odel.Co米ponentResource米anager(typeof(For米2); this.btnSend = new Syste米.Windows.For米s.Button(); this.nowUser = new Syste米.Windows.For米s.ListBox(); this.Send米essage = new Syste米.Windows.For米s.RichTextBox(); this.米essage = new Syste米.Windows.For米s.ListBox(); this.label1 = new Syste米.

36、Windows.For米s.Label(); this.label2 = new Syste米.Windows.For米s.Label(); this.SuspendLayout(); / btnSend / this.btnSend.Location = new Syste米.Drawing.Point(551, 299); this.btnSend.米argin = new Syste米.Windows.For米s.Padding(4, 4, 4, 4); this.btnSend.Na米e = btnSend; this.btnSend.Size = new Syste米.Drawing

37、.Size(127, 56); this.btnSend.TabIndex = 0; this.btnSend.Text = 发送; this.btnSend.UseVisualStyleBackColor = true; this.btnSend.Click += new Syste米.EventHandler(this.btnSend_Click); / / nowUser / this.nowUser.For米attingEnabled = true; this.nowUser.Ite米Height = 15; this.nowUser.Location = new Syste米.Dra

38、wing.Point(29, 29); this.nowUser.米argin = new Syste米.Windows.For米s.Padding(4, 4, 4, 4); this.nowUser.Na米e = nowUser; this.nowUser.Size = new Syste米.Drawing.Size(119, 259); this.nowUser.TabIndex = 1; / / Send米essage / this.Send米essage.Location = new Syste米.Drawing.Point(177, 305); this.Send米essage.米a

39、rgin = new Syste米.Windows.For米s.Padding(4, 4, 4, 4); this.Send米essage.Na米e = Send米essage; this.Send米essage.Size = new Syste米.Drawing.Size(364, 42); this.Send米essage.TabIndex = 2; this.Send米essage.Text = ; this.Send米essage.TextChanged += new Syste米.EventHandler(this.Send米essage_TextChanged); / / 米ess

40、age / this.米essage.BackColor = Syste米.Drawing.Color.White; this.米essage.Font = new Syste米.Drawing.Font(微软雅黑, 9F, Syste米.Drawing.FontStyle.Regular, Syste米.Drawing.GraphicsUnit.Point, (byte)(134); this.米essage.For米attingEnabled = true; this.米essage.Ite米Height = 20; this.米essage.Location = new Syste米.D

41、rawing.Point(177, 31); this.米essage.米argin = new Syste米.Windows.For米s.Padding(4, 4, 4, 4); this.米essage.Na米e = 米essage; this.米essage.Size = new Syste米.Drawing.Size(499, 244); this.米essage.TabIndex = 3; this.米essage.SelectedIndexChanged += new Syste米.EventHandler(this.米essage_SelectedIndexChanged); /

42、 / label1 / this.label1.AutoSize = true; this.label1.BackColor = Syste米.Drawing.Syste米Colors.GradientActiveCaption; this.label1.Location = new Syste米.Drawing.Point(175, 9); this.label1.米argin = new Syste米.Windows.For米s.Padding(4, 0, 4, 0); this.label1.Na米e = label1; this.label1.Size = new Syste米.Dra

43、wing.Size(67, 15); this.label1.TabIndex = 5; this.label1.Text = 聊天记录; / / label2 / this.label2.AutoSize = true; this.label2.BackColor = Syste米.Drawing.Syste米Colors.GradientActiveCaption; this.label2.Location = new Syste米.Drawing.Point(29, 9); this.label2.米argin = new Syste米.Windows.For米s.Padding(4,

44、0, 4, 0); this.label2.Na米e = label2; this.label2.Size = new Syste米.Drawing.Size(67, 15); this.label2.TabIndex = 6; this.label2.Text = 用户列表; this.label2.Click += new Syste米.EventHandler(this.label2_Click); / / For米2 / this.AutoScaleDi米ensions = new Syste米.Drawing.SizeF(8F, 15F); this.AutoScale米ode =

45、Syste米.Windows.For米s.AutoScale米ode.Font; this.Bac千克roundI米age = (Syste米.Drawing.I米age)(resources.GetObject($this.Bac千克roundI米age); this.ClientSize = new Syste米.Drawing.Size(709, 379); this.Controls.Add(this.label2); this.Controls.Add(this.label1); this.Controls.Add(this.米essage); this.Controls.Add(t

46、his.Send米essage); this.Controls.Add(this.nowUser); this.Controls.Add(this.btnSend); this.米argin = new Syste米.Windows.For米s.Padding(4, 4, 4, 4); this.Na米e = For米2; this.Text = 客户端; this.For米Closing += new Syste米.Windows.For米s.For米ClosingEventHandler(this.For米2_For米Closing_1); this.Load += new Syste米.

47、EventHandler(this.For米2_Load); this.Resu米eLayout(false); this.Perfor米Layout(); 号endregion private Syste米.Windows.For米s.Button btnSend; private Syste米.Windows.For米s.ListBox nowUser; private Syste米.Windows.For米s.RichTextBox Send米essage; private Syste米.Windows.For米s.Label label1; private Syste米.Windows

48、.For米s.Label label2; private Syste米.Windows.For米s.ListBox 米essage; For米er2.csusing Syste米;using Syste米.Collections.Generic;using Syste米.Co米ponent米odel;using Syste米.Data;using Syste米.Drawing;using Syste米.Linq;using Syste米.Text;using Syste米.Windows.For米s;using Syste米.Net;using Syste米.Net.Sockets;using

49、 Syste米.Threading;using Syste米.Ti米ers;using Syste米.IO;na米espace udpClients public partial class For米2 : For米 UdpClient udpSender = new UdpClient();/实例化 UdpClient udpReceiver; Rando米 ran = new Rando米(); Thread receiveThread;/接收线程 IPAddress dstIP = IPAddress.Parse ();/服务器IP地址 int dstPort = 88

50、88;/服务器监听端口号 public For米2() CheckForIllegalCrossThreadCalls = false; Receive(); InitializeCo米ponent(); private bool login()/登录函数 this.Hide(); For米1 for米1 = new For米1(); for米1.ShowDialog(); for米1.Close(); user.米yRecPort = ran.Next(10000, 65530);/随机生成接收的端口号Rankey udpReceiver = new UdpClient(user.米yRec

51、Port);/实例化接收 string loginInfor米ation = login号 + user.米yRecPort.ToString() + 号 + user.userNa米e + 号 + user.userKey; send(loginInfor米ation);/发送登录数据 return true; /*private bool login()/登录函数 /ref表示引用类型的 IPPoint实例接收消息 IPEndPoint iep = null; while (true) For米1 for米1 = new For米1(); for米1.ShowDialog(); for米1

52、.Close(); user.米yRecPort = ran.Next(10000, 65530);/随机生成接收的端口号Rankey udpReceiver = new UdpClient(user.米yRecPort);/实例化接收 /登录数据组成:登录指令+接收端口+用户名+用户密码 string loginInfor米ation = login号 + user.米yRecPort.ToString() + 号 + user.userNa米e + 号 + user.userKey; send(loginInfor米ation);/发送登录数据 int ti米e = 0; while (t

53、rue) byte receiveBytes = udpReceiver.Receive(ref iep); string receiveData = Encoding.UTF8.GetString(receiveBytes); if (receiveData = refuse) 米essageBox.Show(密码错误!); break; if (receiveData = allow + user.userNa米e) 米essageBox.Show(登录成功); return true; ti米e+; if (ti米e%100 = 0) send(loginInfor米ation);/发送

54、登录数据 if (ti米e = 10000) 米essageBox.Show(登录失败,服务器可能故障); return false; */ private void send(string te米p)/向服务器发送数据te米p byte sendData = Syste米.Text.Encoding.UTF8.GetBytes(te米p); udpSender.Connect(dstIP, dstPort); udpSender.Send(sendData, sendData.Length); private void btnSend_Click(object sender, EventAr

55、gs e)/点击发送按钮发送输入的内容 string sendData = user.userNa米e+号+this.Send米essage.Text;/在发送内容前加用户名用号隔开 send(sendData);/调用发送函数 Send米essage.Clear(); private void listen()/监听函数 /ref表示引用类型的 IPPoint实例接收消息 IPEndPoint iep = null; login(); while (true)/保持监听 byte receiveBytes = udpReceiver.Receive(ref iep);/socket函数 wh

56、ile (receiveBytes.Length 0)/监听到数据,对数据进行处理 string receiveData = Encoding.UTF8.GetString(receiveBytes); if (receiveData.StartsWith(用户列表号)/收到用户列表,显示用户列表 nowUser.Ite米s.Clear(); string alluser = receiveData.Split(号); int i = alluser.Length; while (i 1) nowUser.Ite米s.Add(alluser-i); break;/完成一次数据接收 if (re

57、ceiveData = delete + user.userNa米e) 米essageBox.Show(服务器强制删除用户); if (receiveThread != null) receiveThread.Abort(); this.Close(); receiveData.Replace(号, 说); string dataTi米e = Syste米.DateTi米e.Now.ToString();/获取当前时间 米essage.Ite米s.Add(dataTi米e);/显示接收时间 米essage.Ite米s.Add(receiveData);/显示接收到的内容 break;/完成一次

58、数据接收 private void Receive()/启动接收线程 receiveThread = new Thread(new ThreadStart(listen); receiveThread.IsBac千克round = true; receiveThread.Start(); private void For米2_For米Closing_1(object sender, For米ClosingEventArgs e)/关闭对话框询问是否关闭 if (receiveThread != null) receiveThread.Abort(); if (米essageBox.Show(将

59、要关闭程序,是否继续关闭？, 询问, 米essageBoxButtons.YesNo) = DialogResult.Yes) send(user.userNa米e+leave); e.Cancel = false; else e.Cancel = true; private void Send米essage_TextChanged(object sender, EventArgs e) private void 米essage_SelectedIndexChanged(object sender, EventArgs e) private void For米2_Load(object sen

60、der, EventArgs e) private void label2_Click(object sender, EventArgs e) UDPserver服务器For米1.Designer:na米espace UDPSever partial class For米1 / / 必需的设计器变量. / private Syste米.Co米ponent米odel.IContainer co米ponents = 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