C#基于TCP协议网络聊天程序.docx

郑州轻工业学院网 络 高 级 编 程实 训 报 告实训名称： 基于TCP协议的网络聊天程序 姓 名 学 号 班 级 指导教师 实训地点 日 期 l实训一l.l实训目的：通过开发一款网络聊天程序, 熟练掌握多线程编程技术和TCP应用编程技术。通过本实训, 达到如下目标:1)理解委托的概念, 掌握线程之间通过委托与控件交互的方法。2)理解异常处理的机制,掌握异常处理语句的用法。3)理解线程的概念, 掌握多线程编程的一般方法。4)掌握基于TCP的应用编程技术 。l.2实训题目： 使用c#编程语言, 开发一款网络聊天程序, 玩家通过客户端登陆远程的服务器, 登陆成功后可以与其他在线的玩家通信, 如下图所示。1.3程序基本功能描述如下：1) 当服务器开启服务后, 允许任何一个玩家通过客户端登陆服务器。2) 每当有玩家登录或退出时, 每一个在线的玩家都会刷新玩家列表。3) 当玩家登陆成功后, 可以通过服务器端与任何一个在线的玩家聊天1.4 需求分析：网络聊天程序的系统结构图如下所示 。服务器端客户端通信接口用户接口 用户用户集合管理员玩家用户接口 定义数据字典如下:1)用户(User):在网络聊天程序中,用户是已登陆的玩家。用户具有玩家的用户名、 客户端与服务器之间建立的 Tc连接等属性 。 在程序中, 用户负责向服务器发送和接收数据。2)用户集合(UserList):在网络聊天程序中,用户集合是所有已经登陆服务器的玩家的列表 。 用户集合包含所有已登陆的玩家的用户名和 TcP连接等信息。在程序中,用户集合负责添加、删除用户, 以及向客户端发送和接收数据。1.5 设计说明：1.5.1 界面设计：服务器端：客户端：1.5.2 功能设计：根据需求分析可知, 管理员可以启动停止服务器; 玩家可以登陆服务器; 登录后的玩家可以与其它在线的玩家聊天; 在线玩家关闭客户端即退出登录。客户端发送给服务器端的命令有如下3种： 1）1ogin,用户名:玩家请求登陆服务器。玩家点击“登陆按钮后, 就会发送1ogin命令, 其中的用户名就是请求登陆玩家的用户名 。2）1ogout,用户名: 玩家请求退出服务器。 玩家关闭客户端的主窗体后, 就会发送1ogout命令, 其中的用户名就是请求退出玩家的用户名 。3）talk,用户名1 ,用户名2,信息: 玩家发出聊天信息 。 玩家点击 “发送按钮后,就会发送talk命令,其中的用户名1是发出信息的玩家, 用户名2是接收信息的玩家 。服务器端发送给客户端的命令有如下4种：1）1ogin,用户名:服务器接受到1ogin命令后,检査用户集合,如果没有重名的在线用户,则给所有用户发送1ogin命令,通知玩家更新用户列表。2）sorry:服务器接受到1ogin命令后,检査用户集合,如果发现有重名的在线用户, 就会向新登陆的用户发送sorry命令拒绝登陆。3）1ogout,用户名: 服务器接收到1ogout命令后, 向所有在线用户发送1ogout命令, 通知其他玩家更新用户列表 。4）talk,用户名1 ,用户名2,信息: 服务器接收到talk命令后, 先给用户2发送talk命令; 发送成功后, 再给用户1发送talk命令, 通知用户1 , 聊天信息发送成功。1.6 源代码：1）服务器端代码如下： User类：using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Net.NetworkInformation;using System.Net;using System.Net.Sockets;using System.Threading;using System.IO;namespace _541307110117TalkServer public class User public string userName; public TcpClient client; public BinaryReader br; public BinaryWriter bw; public User(TcpClient client) this.client = client; NetworkStream ns = client.GetStream(); br = new BinaryReader(ns); bw = new BinaryWriter(ns); public void Close() br.Close(); bw.Close(); client.Close(); public void Send(string message) try bw.Write(message); bw.Flush(); catch (Exception ex) throw ex; public string Receive() try return br.ReadString(); catch (Exception ex) throw ex; UserList类：using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace _541307110117TalkServer public class UserList public List list; public UserList() list = new List(); public void AddUser(User user) list.Add(user); public void RemoveUser(User user) user.Close(); list.Remove(user ); public void RemoveAllUsers() for (int i = list.Count - 1; i = 0; i-) RemoveUser(listi); /user是登录或退出的用户 public void SendToAllUsers(User user, string message) string splitStrings = message.Split(,); if (splitStrings0 = login) foreach (User u in list) u.Send(message); if (u.userName != splitStrings1) user.Send(login, + u.userName); else foreach (User u in list) if (u.userName != splitStrings1) u.Send(message); Mainwondow界面代码：using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows;using System.Windows.Controls;using System.Windows.Data;using System.Windows.Documents;using System.Windows.Input;using System.Windows.Media;using System.Windows.Media.Imaging;using System.Windows.Navigation;using System.Windows.Shapes;using System.Net.Sockets;using System.Net;using System.Threading;namespace _TalkServer / / MainWindow.xaml 的交互逻辑 / public partial class MainWindow : Window public MainWindow() InitializeComponent(); listener = new TcpListener(IPAddress.Parse(),port); userList = new UserList(); isStopped = true; public TcpListener listener; public UserList userList; public const int port = 8888; public bool isStopped; private void buttonStart_Click(object sender, RoutedEventArgs e) try listener.Start(); isStopped = false; Task.Run() = ListenConnect(); buttonStart.IsEnabled = false; buttonStop.IsEnabled = true; catch MessageBox.Show(port+端口已占用！); public void ListenConnect() while (!isStopped) TcpClient client; try client = listener.AcceptTcpClient(); catch break; User newUser = new User(client); userList.AddUser(newUser); Task.Run()=Receive(newUser); public void Receive(User user) while (!isStopped) string message = null; try message = user.Receive(); catch userList.SendToAllUsers(user,logout,+user.userName); userList.RemoveUser(user); break; string splitStrings = message.Split(,); switch (splitStrings0) case login: bool isLeagle = true; string name = splitStrings1; foreach (User u in userList.list) if (u.userName = name) isLeagle = false; break； if (isLeagle) user.userName = name; userList.SendToAllUsers(user, message); else user.Send(sorry); userList.RemoveUser(user); break; casetalk: string receiver = splitStrings2; foreach (User u in userList.list) if (u.userName = receiver) u.Send(message); user.Send(message); break; caselogout: userList.SendToAllUsers(user,message); userList.RemoveUser(user); break; private void buttonStop_Click(object sender, RoutedEventArgs e) userList.RemoveAllUsers(); isStopped = true; listener.Stop(); buttonStart.IsEnabled = true; buttonStop.IsEnabled = false; private void Window_Closing_1(object sender, System.ComponentModel.CancelEventArgs e) userList.RemoveAllUsers(); isStopped = true; listener.Stop(); 2）客户端代码如下：User类：using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Net;using System.IO;using System.Net.Sockets;namespace _TalkClient public class User public string userName; public TcpClient client; public BinaryReader br; public BinaryWriter bw; public User(TcpClient client) this.client = client; NetworkStream ns = client.GetStream(); br = new BinaryReader(ns); bw = new BinaryWriter(ns); public void Close() if (br != null) br.Close(); if (bw != null) bw.Close(); if (client != null) client.Close(); public void Send(string message) try bw.Write(message); bw.Flush(); catch(Exception ex) throw ex; public string Receive() try return br.ReadString(); catch(Exception ex) throw ex; Mainwondow界面代码：using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows;using System.Windows.Controls;using System.Windows.Data;using System.Windows.Documents;using System.Windows.Input;using System.Windows.Media;using System.Windows.Media.Imaging;using System.Windows.Navigation;using System.Windows.Shapes;using System.Net.Sockets;using System.IO;using System.Media;namespace _TalkClient / / MainWindow.xaml 的交互逻辑 / public partial class MainWindow : Window public MainWindow() InitializeComponent(); isConnected=false; public User user; public const int port=8888; public bool isConnected; private void buttonLogin_Click(object sender, RoutedEventArgs e) if (textBoxUserName.Text = ) listBoxHistory.Items.Add(请输入用户名!); return; try TcpClient client = new TcpClient(); client.Connect(, port); user = new User(client); user.userName = textBoxUserName.Text; listBoxHistory.Items.Add(连接成功！); SoundPlayer sndplayer= new SoundPlayer(); sndplayer.SoundLocation = D:DocumentsVisual Studio 2012Projects541307110117TalkClient541307110117TalkClientsongsQQ.wav; sndplayer.Load(); sndplayer.Play(); isConnected = true; SendMessage(login, + user.userName); Task.Run() = Receive(); buttonLogin.IsEnabled = false; buttonSend.IsEnabled = true; catch listBoxHistory.Items.Add(连接失败！); public void Receive() string message; while (isConnected) try message = user.Receive(); catch MessageBox.Show(断开连接！); DelUserOnline(user.userName,true); isConnected = false; buttonLogin.Dispatcher.Invoke()=buttonLogin.IsEnabled=true); buttonSend.Dispatcher.Invoke() = buttonSend.IsEnabled = false); break; string splitStrings = message.Split(,); switch (splitStrings0) case login: if (splitStrings1 = user.userName) AddTalkMessage(登录成功！); else AddUserOnline(splitStrings1); break; casesorry: AddTalkMessage(该用户已被使用！); user.Close(); break; case talk: if (splitStrings1 = user.userName) AddTalkMessage(我对 + splitStrings2 + 说： + splitStrings3); else AddTalkMessage(splitStrings1+对我说：+splitStrings3); break; caselogout: DelUserOnline(splitStrings1,false); break; public void SendMessage(string message) try user.Send(message); catch AddTalkMessage(发送失败！); private void AddTalkMessage(string message) listBoxHistory.Dispatcher.Invoke() = listBoxHistory.Items.Add(message); private void AddUserOnline(string name) listBoxUsers.Dispatcher.Invoke() = listBoxUsers.Items.Add(name); private void DelUserOnline(string name, bool all) listBoxUsers.Dispatcher.Invoke() = if (all) listBoxUsers.Items.Clear(); else listBoxUsers.Items.Remove(name); ); private void buttonSend_Click(object sender, RoutedEventArgs e) if (textBoxMessage.Text = ) AddTalkMessage(请输入对话信息！); return; if (listBoxUsers.SelectedIndex = -1) AddTalkMessage(请选择用户！); return; string receiver = listBoxUsers.SelectedItem.ToString(); SendMessage(talk,+user.userName+,+receiver+,+textBoxMessage.