利用TCP协议通过Socket编写的网络聊天工具1-客户端
来源：互联网 发布：jx300xp 软件培训课件 编辑：程序博客网 时间：2024/05/22 11:40
面向对象课程大作业要求写一个面向对象设计的工程，所以我选择了网络聊天。
整个项目源码下载地址：http://download.csdn.net/detail/weixingstudio/4301232
具体的分析以后给出，先给出部分代码实现。
这里的实现只有客户端，服务器端下一节给出。
登录窗口的代码：
using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using UtilityClass;using System.Net;using System.Net.Sockets;using System.Collections.Specialized;namespace Client{ public partial class Login : Form { public Login() { InitializeComponent(); } private void button_cancel_Click(object sender, EventArgs e) { this.Close(); } private void button_OK_Click(object sender, EventArgs e) { VerifyUserInfo verify = new VerifyUserInfo(); string userName = textBox1.Text.Trim(); string serverIP = textBox2.Text.Trim(); string serverPort = textBox3.Text.Trim(); if (!verify.VerifyUserName(userName)) { MessageBox.Show("请重新填写用户名！","提示"); textBox1.Focus(); } else { if (!verify.VerifyServerIP(serverIP)) { MessageBox.Show("请重新填写服务器IP！", "提示"); textBox2.Focus(); } else { if (!verify.VerifyServerPort(serverPort)) { MessageBox.Show("请重新填写服务器端口！", "提示"); textBox3.Focus(); } else { // 打开聊天窗口 //MessageBox.Show("Good", "提示"); try { int serverPort_int=int.Parse(serverPort); ServerConfig serverConfig = new ServerConfig(serverIP, serverPort_int); IPAddress serverIPAddress = IPAddress.Parse(serverConfig.ServerIP); TcpClient client = new TcpClient(); client.Connect(serverIPAddress, serverConfig.ServerPort); if (client==null) { MessageBox.Show("连接服务器失败，请重新填写服务器数据或者查看服务器运行状态！", "提示"); textBox1.Focus(); } else { // 连接成功以后的操作 NetworkStream clientNetWorkStream = client.GetStream(); // 发送用户名 byte[] bytes2beSend=Command.EncodeCommand(userName); clientNetWorkStream.Write(bytes2beSend, 0, bytes2beSend.Length); byte[] receiveBuffer=new byte[serverConfig.MaxBuffer]; clientNetWorkStream.Read(receiveBuffer, 0, receiveBuffer.Length); string connResult = Command.DecodeCommand(receiveBuffer); if (connResult==Command.RedundantUserName) { MessageBox.Show("重复的用户名，请重新填写用户名。", "提示"); } else if (connResult==Command.ExceedMaxAllowedNumber) { MessageBox.Show("超出了服务器最多允许的连接数量，请稍后连接！", "提示"); } else if (connResult==Command.ConnectConfirm) { //// 请求用户列表 //// 开始先请求一个在线用户列表 //byte[] cmd = new byte[serverConfig.MaxBuffer]; //cmd = Command.EncodeCommand(Command.RequestOnlineUser); //clientNetWorkStream.Write(cmd, 0, cmd.Length); //// 读取在线用户列表 //clientNetWorkStream.Read(cmd, 0, cmd.Length); //StringCollection sc = Command.DeserializeOnlineUser(cmd); // 打开聊天窗口 MainChatFrm mainChat = new MainChatFrm(userName,serverConfig,clientNetWorkStream); // 将数据流传递给另外一个窗口 mainChat.Owner = this; this.Hide(); mainChat.Show(); } } } catch (System.Exception ex) { MessageBox.Show("出错了！远程服务器没有响应。连接服务器失败，请重新填写服务器数据或者查看服务器运行状态！", "提示"); } } } } } }}
主聊天窗口的代码：
using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using UtilityClass;using System.Net.Sockets;using System.Threading;using System.Runtime.InteropServices;using System.Collections.Specialized;namespace Client{ public partial class MainChatFrm : Form { Thread receiveMegThread; ServerConfig serverConfig; NetworkStream networkStream; string userName; private bool isDisconnected = false; private delegate void showMessage(string s); private delegate void addOnlineUser(string s); public MainChatFrm() { InitializeComponent(); } public MainChatFrm(string name, ServerConfig config, NetworkStream ns) { InitializeComponent(); this.listBox_onlineuser.Items.Clear(); this.userName = name; this.serverConfig = config; this.networkStream = ns; this.label_username.Text += userName; this.label_serverIP.Text += serverConfig.ServerIP + ":" + serverConfig.ServerPort; this.richTextBox1.Text += "你好 " + userName + ",欢迎来到微星聊天室！ " + DateTime.Now + "\n"; try { // 开启接收消息的线程 receiveMegThread = new Thread(new ThreadStart(ReceiveMessage)); receiveMegThread.IsBackground = true; receiveMegThread.Start(); Thread.Sleep(100); } catch (System.Exception ex) { // } } /// <summary> /// 接收消息处理线程函数 /// </summary> private void ReceiveMessage() { try { while (true) { byte[] receiveBuffer=new byte[serverConfig.MaxBuffer]; networkStream.Read(receiveBuffer, 0, receiveBuffer.Length); string cmd_from_server = Command.DecodeCommand(receiveBuffer); switch (cmd_from_server) { // 服务器通知有用户上线 case Command.SomeoneConnected: { // 获取用户名 byte[] cmd=new byte[serverConfig.MaxBuffer]; networkStream.Read(cmd, 0, cmd.Length); string name = Command.DecodeCommand(cmd); if (name!=userName) { // 线程安全的添加数据到RichTextBox AddText2RTB("用户：" + name + " 上线了！" + " " + DateTime.Now); } else { // nothing } // 请求最新的用户列表 cmd = Command.EncodeCommand(Command.RequestOnlineUser); // 发送请求在线用户列表命令 networkStream.Write(cmd, 0, cmd.Length); break; } // 服务器发送用户列表 case Command.SendOnlinUserList: { // 接收数据 networkStream.Read(receiveBuffer, 0, receiveBuffer.Length); StringCollection sc = Command.DeserializeOnlineUser(receiveBuffer); ClearOnlineUserList(); ClearComboList(); foreach (string s in sc) { // 线程安全的添加数据 AddOnlineUserList(s); } break; } // 有人离开 case Command.SomeoneLeave: { byte[] cmd=new byte[serverConfig.MaxBuffer]; networkStream.Read(cmd, 0, cmd.Length); string name = Command.DecodeCommand(cmd); AddText2RTB("用户:" + name + " 离开了系统." + DateTime.Now); // 线程安全的移除下线的用户 Action<object> call = delegate(object s) { this.listBox_onlineuser.Items.Remove(s); this.comboBox_selectUser.Items.Remove(s); }; this.listBox_onlineuser.Invoke(call, name); break; } // 有广播消息 case Command.BroadcastAll: { // 获取广播消息的用户名 byte[] cmd=new byte[serverConfig.MaxBuffer]; networkStream.Read(cmd, 0, cmd.Length); string name = Command.DecodeCommand(cmd); AddText2RTB("用户:" + name + "在" + DateTime.Now + "对大家说："); byte[] msg=new byte[serverConfig.MaxBuffer]; networkStream.Read(msg, 0, msg.Length); string message = Command.DecodeCommand(msg); AddText2RTB(message); break; } // 对这个用户单独发送数据 case Command.SendMessage2One: { byte[] cmd = new byte[serverConfig.MaxBuffer]; networkStream.Read(cmd, 0, cmd.Length); string name_from = Command.DecodeCommand(cmd); // Thread.Sleep(20); networkStream.Read(cmd, 0, cmd.Length); string message = Command.DecodeCommand(cmd); AddText2RTB("用户:" + name_from + "在" + DateTime.Now + "对你悄悄的说："); AddText2RTB(message); break; } // 请求抖动 case Command.VibrateOne: { byte[] cmd = new byte[serverConfig.MaxBuffer]; networkStream.Read(cmd, 0, cmd.Length); string name_from = Command.DecodeCommand(cmd); AddText2RTB("用户:" + name_from + "在" + DateTime.Now + "给您发送了一个抖动"); Vibrate(); break; } case Command.VibrateAll: { byte[] cmd = new byte[serverConfig.MaxBuffer]; networkStream.Read(cmd, 0, cmd.Length); string name_from = Command.DecodeCommand(cmd); AddText2RTB("用户:" + name_from + "在" + DateTime.Now + "给所有人发送了一个抖动"); Vibrate(); break; } case Command.ServerShutdown: { AddText2RTB("服务器已经关闭，请退出程序，重新连接服务器。"); this.networkStream.Close(); networkStream=null; this.button_send.Enabled = false; break; } default: { break; } } } } catch (System.Exception ex) { // 服务器连接失败，清理连接 if (networkStream!=null) { MessageBox.Show("服务器连接失败！"); networkStream.Close(); networkStream = null; } } } private void ClearOnlineUserList() { Action call = delegate() { this.listBox_onlineuser.Items.Clear(); }; this.listBox_onlineuser.Invoke(call); } private void ClearComboList() { Action call = delegate() { this.comboBox_selectUser.Items.Clear(); }; this.comboBox_selectUser.Invoke(call); } private void AddOnlineUserList(string user) { addOnlineUser call = delegate(string s) { this.listBox_onlineuser.Items.Add(s); this.comboBox_selectUser.Items.Add(s); }; this.listBox_onlineuser.Invoke(call,user); } //private void fromClosed(object sender, FormClosedEventArgs e) //{ // DisConnectWithServer(); // this.Owner.Close(); // this.Close(); //} private void button_close_Click(object sender, EventArgs e) { if (networkStream != null) { DialogResult ret; ret = MessageBox.Show("确定与服务器断开连接吗？", "退出", MessageBoxButtons.OKCancel, MessageBoxIcon.Question, MessageBoxDefaultButton.Button2); if (ret == DialogResult.OK) { try { isDisconnected = true; // 向服务器发送离线请求 byte[] cmd = Command.EncodeCommand(Command.DisConnect); networkStream.Write(cmd, 0, cmd.Length); if (receiveMegThread != null) { receiveMegThread.Abort(); } if (networkStream != null) { // 关闭网络流 networkStream.Close(); networkStream.Dispose(); } this.Owner.Close(); this.Close(); } catch (System.Exception ex) { } } } else { this.Owner.Close(); this.Close(); } } /// <summary> /// 与服务器断开连接 /// </summary> private void DisConnectWithServer() { } [DllImport("user32.dll")] public static extern bool FlashWindow(IntPtr hWnd, bool bInvert); /// <summary> /// 给用户发送抖动 /// /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void pictureBox1_Click(object sender, EventArgs e) { if (radioButton_all.Checked) { //AddText2RTB("禁止对所有用户发送抖动！"); // 发送命令 byte[] cmd = Command.EncodeCommand(Command.VibrateAll); networkStream.Write(cmd, 0, cmd.Length); Thread.Sleep(20); AddText2RTB("您给所有人发送了一个抖动"); Vibrate(); } else if (radioButton_one.Checked) { // 给当个用户发送抖动 if (this.comboBox_selectUser.SelectedItem==null) { MessageBox.Show("请选择一个私聊用户"); } else { string name_private = comboBox_selectUser.SelectedItem.ToString(); if (name_private == userName) { MessageBox.Show("您不能给自己发送抖动！"); } else { // 发送命令 byte[] cmd=Command.EncodeCommand(Command.VibrateOne); networkStream.Write(cmd, 0, cmd.Length); Thread.Sleep(20); // 发送抖动用户 cmd = Command.EncodeCommand(name_private); networkStream.Write(cmd, 0, cmd.Length); Thread.Sleep(20); Vibrate(); } } } } private void Vibrate() { if (this.WindowState == FormWindowState.Minimized) { FlashWindow(this.Handle, true); } Nudge(); } /// <summary> /// 产生闪屏振动效果 /// </summary> private void Nudge() { if (this.WindowState == FormWindowState.Minimized) { this.WindowState = FormWindowState.Normal; } int i = 0; Point _old = this.Location; Point _new1 = new Point(_old.X + 2, _old.Y + 2); Point _new2 = new Point(_old.X - 2, _old.Y - 2); //_sp2.Play(); while (i < 4) { this.Location = _new1; Thread.Sleep(60); this.Location = _new2; Thread.Sleep(60); i++; } this.Location = _old; } private void chatFrm_close(object sender, FormClosedEventArgs e) { if (!isDisconnected) { try { if (networkStream != null) { DialogResult ret; ret = MessageBox.Show("确定与服务器断开连接吗？", "退出", MessageBoxButtons.OKCancel, MessageBoxIcon.Question, MessageBoxDefaultButton.Button2); if (ret == DialogResult.OK) { isDisconnected = true; // 向服务器发送离线请求 byte[] cmd = Command.EncodeCommand(Command.DisConnect); networkStream.Write(cmd, 0, cmd.Length); if (receiveMegThread != null) { receiveMegThread.Abort(); } if (networkStream != null) { // 关闭网络流 networkStream.Close(); networkStream.Dispose(); networkStream = null; } this.Owner.Close(); this.Close(); } } else { isDisconnected = true; this.Owner.Close(); this.Close(); } } catch (System.Exception ex) { // } } } private void AddText2RTB(string msg) { if (this.richTextBox1.InvokeRequired) { showMessage call = delegate(string s) { this.richTextBox1.Text += s + "\n"; }; this.richTextBox1.Invoke(call, msg); } else { this.richTextBox1.Text += msg + "\n"; } } /// <summary> /// 发送用户消息 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void button_send_Click(object sender, EventArgs e) { string messsage = this.richTextBox2.Text; if (Command.VerifyMessage(messsage)) { // 验证将要发送的消息正确 if (radioButton_all.Checked) { // 给所有人发送消息 // 给服务器发送命令 byte[] cmd = Command.EncodeCommand(Command.BroadcastAll); networkStream.Write(cmd, 0, cmd.Length); Thread.Sleep(50); // 发送要传送的数据 cmd = Command.EncodeCommand(messsage); networkStream.Write(cmd, 0, cmd.Length); AddText2RTB("你" + "在 " + DateTime.Now + " 对大家说："); AddText2RTB(messsage); this.richTextBox2.Text = ""; this.richTextBox2.Focus(); } else if (radioButton_one.Checked) { // 给单个人发送消息 try { if (comboBox_selectUser.SelectedItem==null) { MessageBox.Show("请选择一个私聊用户"); } string name_private = comboBox_selectUser.SelectedItem.ToString(); if (name_private == userName) { MessageBox.Show("您不能和自己私聊！"); this.richTextBox2.Text = ""; this.richTextBox2.Focus(); } else { // 发送命令 byte[] cmd = Command.EncodeCommand(Command.SendMessage2One); networkStream.Write(cmd, 0, cmd.Length); Thread.Sleep(50); // 发送对象名 cmd = Command.EncodeCommand(name_private); networkStream.Write(cmd, 0, cmd.Length); Thread.Sleep(50); // 发送数据 cmd = Command.EncodeCommand(messsage); networkStream.Write(cmd, 0, cmd.Length); AddText2RTB("你" + "在 " + DateTime.Now + " 对 " + name_private + "说："); AddText2RTB(messsage); this.richTextBox2.Text = ""; this.richTextBox2.Focus(); } } catch (System.Exception ex) { // } } } else { this.richTextBox2.Text = ""; this.richTextBox2.Focus(); AddText2RTB("请输入正确的消息然后在发送！！！" + DateTime.Now); } } /// <summary> /// 清除数据 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void button_clear_Click(object sender, EventArgs e) { this.richTextBox2.Text = ""; this.richTextBox2.Focus(); } private void richTextBox1_TextChanged(object sender, EventArgs e) { this.richTextBox1.SelectionStart = this.richTextBox1.TextLength; this.richTextBox1.ScrollToCaret(); if (this.WindowState == FormWindowState.Minimized) { FlashWindow(this.Handle, true); } } }}
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