基于 UDP 即时通信工具设计开发

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 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

2、 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 ud

3、pserver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.Fo

4、rms.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(ob

5、ject 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; pri

6、vate 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

7、_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, EventAr

8、gs 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 Sys

9、tem.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 voi

10、d 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 s

11、ender, 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

12、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 / <summary> / 必需的设计器变量。 /

13、</summary> private System.ComponentModel.IContainer components = null; / <summary> / 清理所有正在使用的资源。 / </summary> / <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param> protected override void Dispose(bool disposing) if (disposing && (components !=

14、 null) components.Dispose(); base.Dispose(disposing); #region Windows 窗体设计器生成的代码 / <summary> / 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。 / </summary> private void InitializeComponent() this.serverInformation = new System.Windows.Forms.ListBox(); this.message = new System.Windows.Forms.ListBox()

15、; 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.Formatting

16、Enabled = 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.Drawi

17、ng.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.P

18、oint(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); / / cl

19、ientsList / 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.Drawi

20、ng.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.Fore

21、Color = 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 =

22、 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)

23、; 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.FromAr

24、gb(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 = &qu

25、ot;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_Cl

26、ick); / / 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.btnSaveMesssag

27、e); 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" thi

28、s.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 me

29、ssage; 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

30、.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(); us

31、er.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;usi

32、ng System.Collections.Generic;using System.Linq;using System.Windows.Forms;namespace udpClients static class Program / <summary> / 应用程序的主入口点。 / </summary> STAThread static void Main() Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); Application.Run(

33、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.De

34、signer:namespace udpClients partial class Form2 / <summary> / Required designer variable. / </summary> private System.ComponentModel.IContainer components = null;/ <summary> / Clean up any resources being used. / </summary> / <param name="disposing">true if ma

35、naged resources should be disposed; otherwise, false.</param> protected override void Dispose(bool disposing) if (disposing && (components != null) components.Dispose(); base.Dispose(disposing); #region Windows Form Designer generated code / <summary> / Required method for Design

36、er support - do not modify / the contents of this method with the code editor. / </summary> private void InitializeComponent() System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(Form2); this.btnSend = new System.Windows.Forms.Bu

37、tton(); 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 / t

38、his.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.UseV

39、isualStyleBackColor = 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,

40、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.Nam

41、e = "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

42、.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.Mar

43、gin = 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.Auto

44、Size = 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)

45、; 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