using System;using System.Drawing;using System.Collections;using System.ComponentModel;using System.Windows.Forms;using System.Data;using System.Threading;using System.Net.Sockets;using System.Net;namespace Chat_Server...{ /**//// <summary> /// Form1 的摘要说明。 /// </summary> public class Form1 : System.Windows.Forms.Form ...{ /**//// <summary> /// 必需的设计器变量。 /// </summary> private System.ComponentModel.Container components = null; static int listenport=6666; Socket clientsocket; private System.Windows.Forms.ListBox lbClients; ArrayList clients; private System.Windows.Forms.Button button1; Thread clientservice; private System.Windows.Forms.Label label1; Thread threadListen; public Form1() ...{ InitializeComponent(); } /**//// <summary> /// 清理所有正在使用的资源。 /// </summary> protected override void Dispose( bool disposing ) ...{ if( disposing ) ...{ if(clientservice != null) ...{ clientservice.Abort(); } if(threadListen != null) ...{ try ...{ threadListen.Abort(); } catch(Exception ex) ...{ threadListen = null; } } if (components != null) ...{ components.Dispose(); } } base.Dispose( disposing ); } Windows 窗体设计器生成的代码#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.lbClients = new System.Windows.Forms.ListBox(); this.button1 = new System.Windows.Forms.Button(); this.label1 = new System.Windows.Forms.Label(); this.SuspendLayout(); // // lbClients // this.lbClients.ItemHeight = 12; this.lbClients.Location = new System.Drawing.Point(16, 24); this.lbClients.Name = "lbClients"; this.lbClients.Size = new System.Drawing.Size(184, 268); this.lbClients.TabIndex = 0; // // button1 // this.button1.Location = new System.Drawing.Point(272, 56); this.button1.Name = "button1"; this.button1.TabIndex = 1; this.button1.Text = "button1"; this.button1.Click += new System.EventHandler(this.button1_Click); // // label1 // this.label1.Location = new System.Drawing.Point(240, 136); this.label1.Name = "label1"; this.label1.Size = new System.Drawing.Size(120, 32); this.label1.TabIndex = 2; this.label1.Text = "label1"; // // Form1 // this.AutoScaleBaseSize = new System.Drawing.Size(6, 14); this.ClientSize = new System.Drawing.Size(368, 309); this.Controls.Add(this.label1); this.Controls.Add(this.button1); this.Controls.Add(this.lbClients); this.Name = "Form1"; this.Text = "Form1"; this.Load += new System.EventHandler(this.Form1_Load); this.ResumeLayout(false); } #endregion /**//// <summary> /// 应用程序的主入口点。 /// </summary> [STAThread] static void Main() ...{ Application.Run(new Form1()); } private void StartListening() ...{ TcpListener listener = new TcpListener(listenport); listener.Start(); label1.Text = "listening...."; while (true) ...{ try ...{ Socket s = listener.AcceptSocket(); clientsocket = s; clientservice = new Thread(new ThreadStart(ServiceClient)); clientservice.Start(); } catch(Exception ex) ...{ MessageBox.Show("listening Error: "+ex.Message); } } } private void ServiceClient() ...{ Socket client = clientsocket; bool keepalive = true; while (keepalive) ...{ Byte[] buffer = new Byte[1024]; int bufLen = 0; try ...{ bufLen = client.Available ; client.Receive(buffer,0,bufLen,SocketFlags.None); if(bufLen==0) continue; } catch(Exception ex) ...{ MessageBox.Show("Receive Error:"+ex.Message); return; } string clientcommand = System.Text.Encoding.ASCII.GetString(buffer).Substring(0,bufLen); string[] tokens = clientcommand.Split(new Char[]...{'|'}); Console.WriteLine(clientcommand); if (tokens[0] == "CONN") ...{ for(int n=0; n<clients.Count;n++) ...{ Client cl = (Client)clients[n]; SendToClient(cl, "JOIN|" + tokens[1]); } EndPoint ep = client.RemoteEndPoint; Client c = new Client(tokens[1], ep, clientservice, client); string message = "LIST|" + GetChatterList() +" "; SendToClient(c, message); clients.Add(c); lbClients.Items.Add(c); } if (tokens[0] == "CHAT") ...{ for(int n=0; n<clients.Count;n++) ...{ Client cl = (Client)clients[n]; SendToClient(cl, clientcommand); } } if (tokens[0] == "PRIV") ...{ string destclient = tokens[3]; for(int n=0; n<clients.Count;n++) ...{ Client cl = (Client)clients[n]; if(cl.Name.CompareTo(tokens[3]) == 0) SendToClient(cl, clientcommand); if(cl.Name.CompareTo(tokens[1]) == 0) SendToClient(cl, clientcommand); } } if (tokens[0] == "GONE") ...{ int remove = 0; bool found = false; int c = clients.Count; for(int n=0; n<clients.Count;n++) ...{ Client cl = (Client)clients[n]; SendToClient(cl, clientcommand); if(cl.Name.CompareTo(tokens[1]) == 0) ...{ remove = n; found = true; lbClients.Items.Remove(cl); } } if(found) clients.RemoveAt(remove); client.Close(); keepalive = false; } } } private string GetChatterList() ...{ string result = ""; for(int i=0;i<clients.Count;i++) ...{ result += ((Client)clients[i]).Name+"|"; } return result; } private void SendToClient(Client cl,string clientCommand) ...{ Byte[] message = System.Text.Encoding.ASCII.GetBytes(clientCommand); Socket s = cl.Sock; if(s.Connected) ...{ s.Send(message,message.Length,0); } } private void Form1_Load(object sender, System.EventArgs e) ...{ clients = new ArrayList(); } private void button1_Click(object sender, System.EventArgs e) ...{ threadListen = new Thread(new ThreadStart(StartListening)); threadListen.Start(); } } }/**//***************************** client类 ********************//**//************************** 放于 chatServer 项目中 *********/using System; using System.Threading; namespace Chat_Server ...{ using System.Net.Sockets; using System.Net; /**//// /// Client 的摘要说明。 /// public class Client ...{ private Thread clthread; private EndPoint endpoint; private string name; private Socket sock; public Client(string _name, EndPoint _endpoint, Thread _thread, Socket _sock) ...{ // TODO: 在此处添加构造函数逻辑 clthread = _thread; endpoint = _endpoint; name = _name; sock = _sock; } public override string ToString() ...{ return endpoint.ToString()+ " : " + name; } public Thread CLThread ...{ get...{return clthread;} set...{clthread = value;} } public EndPoint Host ...{ get...{return endpoint;} set...{endpoint = value;} } public string Name ...{ get...{return name;} set...{name = value;} } public Socket Sock ...{ get...{return sock;} set...{sock = value;} } } } /**//***************************** chatClient ************************************/using System;using System.Drawing;using System.Collections;using System.ComponentModel;using System.Windows.Forms;using System.Data;using System.IO;using System.Net;using System.Net.Sockets;using System.Threading;namespace Chat_Client...{ /**//// <summary> /// Form1 的摘要说明。 /// </summary> public class Form1 : System.Windows.Forms.Form ...{ private System.Windows.Forms.CheckBox checkBox1; private System.Windows.Forms.StatusBar statusBar1; NetworkStream ns; StreamReader sr; TcpClient clientsocket; bool connected; Thread receive; string serveraddress = "219.228.231.85"; int serverport = 6666; private System.Windows.Forms.RichTextBox rtbChatIn; private System.Windows.Forms.ListBox lbChatters; private System.Windows.Forms.TextBox ChatOut; private System.Windows.Forms.Button btnDisconnect; private System.Windows.Forms.Button btnSend; private System.Windows.Forms.TextBox clientName; string clientname; private System.Windows.Forms.Button btnConnect; private System.ComponentModel.Container components = null; public Form1() ...{ InitializeComponent(); } /**//// <summary> /// 清理所有正在使用的资源。 /// </summary> protected override void Dispose( bool disposing ) ...{ if( disposing ) ...{ if(receive != null) ...{ QuitChat(); } if (components != null) ...{ components.Dispose(); } } base.Dispose( disposing ); } Windows 窗体设计器生成的代码#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.lbChatters = new System.Windows.Forms.ListBox(); this.rtbChatIn = new System.Windows.Forms.RichTextBox(); this.checkBox1 = new System.Windows.Forms.CheckBox(); this.ChatOut = new System.Windows.Forms.TextBox(); this.btnSend = new System.Windows.Forms.Button(); this.statusBar1 = new System.Windows.Forms.StatusBar(); this.btnDisconnect = new System.Windows.Forms.Button(); this.clientName = new System.Windows.Forms.TextBox(); this.btnConnect = new System.Windows.Forms.Button(); this.SuspendLayout(); // // lbChatters // this.lbChatters.ItemHeight = 12; this.lbChatters.Location = new System.Drawing.Point(32, 40); this.lbChatters.Name = "lbChatters"; this.lbChatters.Size = new System.Drawing.Size(112, 172); this.lbChatters.TabIndex = 0; // // rtbChatIn // this.rtbChatIn.Location = new System.Drawing.Point(160, 40); this.rtbChatIn.Name = "rtbChatIn"; this.rtbChatIn.Size = new System.Drawing.Size(208, 176); this.rtbChatIn.TabIndex = 2; this.rtbChatIn.Text = ""; // // checkBox1 // this.checkBox1.Location = new System.Drawing.Point(16, 248); this.checkBox1.Name = "checkBox1"; this.checkBox1.TabIndex = 3; this.checkBox1.Text = "checkBox1"; // // ChatOut // this.ChatOut.Location = new System.Drawing.Point(136, 248); this.ChatOut.Name = "ChatOut"; this.ChatOut.Size = new System.Drawing.Size(136, 21); this.ChatOut.TabIndex = 4; this.ChatOut.Text = "message"; // // btnSend // this.btnSend.Location = new System.Drawing.Point(336, 248); this.btnSend.Name = "btnSend"; this.btnSend.TabIndex = 5; this.btnSend.Text = "send"; this.btnSend.Click += new System.EventHandler(this.btnSend_Click); // // statusBar1 // this.statusBar1.Location = new System.Drawing.Point(0, 287); this.statusBar1.Name = "statusBar1"; this.statusBar1.Size = new System.Drawing.Size(464, 22); this.statusBar1.TabIndex = 6; this.statusBar1.Text = "statusBar1"; // // btnDisconnect // this.btnDisconnect.Enabled = false; this.btnDisconnect.Location = new System.Drawing.Point(392, 112); this.btnDisconnect.Name = "btnDisconnect"; this.btnDisconnect.Size = new System.Drawing.Size(64, 32); this.btnDisconnect.TabIndex = 7; this.btnDisconnect.Text = "断开"; this.btnDisconnect.Click += new System.EventHandler(this.btnDisconnect_Click); // // clientName // this.clientName.Location = new System.Drawing.Point(96, 8); this.clientName.Name = "clientName"; this.clientName.TabIndex = 8; this.clientName.Text = "name"; // // btnConnect // this.btnConnect.Location = new System.Drawing.Point(392, 56); this.btnConnect.Name = "btnConnect"; this.btnConnect.Size = new System.Drawing.Size(64, 32); this.btnConnect.TabIndex = 9; this.btnConnect.Text = "连接"; this.btnConnect.Click += new System.EventHandler(this.btnConnect_Click); // // Form1 // this.AutoScaleBaseSize = new System.Drawing.Size(6, 14); this.ClientSize = new System.Drawing.Size(464, 309); this.Controls.Add(this.btnConnect); this.Controls.Add(this.clientName); this.Controls.Add(this.btnDisconnect); this.Controls.Add(this.statusBar1); this.Controls.Add(this.btnSend); this.Controls.Add(this.ChatOut); this.Controls.Add(this.checkBox1); this.Controls.Add(this.rtbChatIn); this.Controls.Add(this.lbChatters); this.Name = "Form1"; this.Text = "Form1"; this.ResumeLayout(false); } #endregion /**//// <summary> /// 应用程序的主入口点。 /// </summary> [STAThread] static void Main() ...{ Application.Run(new Form1()); } private void EstablishConnection() ...{ statusBar1.Text = "正在连接到服务器"; try ...{ clientsocket = new TcpClient(serveraddress,serverport); ns = clientsocket.GetStream(); sr = new StreamReader(ns); connected = true; } catch (Exception) ...{ MessageBox.Show("不能连接到服务器!","错误", MessageBoxButtons.OK, MessageBoxIcon.Exclamation); statusBar1.Text = "已断开连接"; } } private void RegisterWithServer() ...{ lbChatters.Items.Clear(); clientname = clientName.Text; try ...{ string command = "CONN|" + clientname; //+" "; Byte[] outbytes = System.Text.Encoding.ASCII.GetBytes(command.ToCharArray()); ns.Write(outbytes,0,outbytes.Length); string serverresponse = sr.ReadLine(); serverresponse.Trim(); string[] tokens = serverresponse.Split('|'); if(tokens[0] == "LIST") ...{ statusBar1.Text = "已连接"; btnDisconnect.Enabled = true; } if(tokens[1] != "") ...{ for(int n=1; n<tokens.Length;n++) lbChatters.Items.Add(tokens[n].Trim(new char[]...{' ',' '})); } this.Text = clientname + ":已连接到服务器"; } catch (Exception ex) ...{ MessageBox.Show("注册时发生错误!"+ex.Message,"错误", MessageBoxButtons.OK, MessageBoxIcon.Exclamation); connected = false; } } private void ReceiveChat() ...{ bool keepalive = true; while (keepalive) ...{ try ...{ Byte[] buffer = new Byte[1024]; // 2048??? ns.Read(buffer,0,buffer.Length); string chatter = System.Text.Encoding.ASCII.GetString(buffer); string[] tokens = chatter.Split(new Char[]...{'|'}); if (tokens[0] == "CHAT") ...{ rtbChatIn.AppendText(tokens[1]); // if(logging) // logwriter.WriteLine(tokens[1]); } if (tokens[0] == "PRIV") ...{ rtbChatIn.AppendText("Private from "); rtbChatIn.AppendText(tokens[1].Trim() ); rtbChatIn.AppendText(tokens[2] + " "); // if(logging) // { // logwriter.Write("Private from "); // logwriter.Write(tokens[1].Trim() ); // logwriter.WriteLine(tokens[2] + " "); // } } if (tokens[0] == "JOIN") ...{ rtbChatIn.AppendText(tokens[1].Trim() ); rtbChatIn.AppendText(" has joined the Chat "); // if(logging) // { // logwriter.WriteLine(tokens[1]+" has joined the Chat"); // } string newguy = tokens[1].Trim(new char[]...{' ',' '}); lbChatters.Items.Add(newguy); } if (tokens[0] == "GONE") ...{ rtbChatIn.AppendText(tokens[1].Trim() ); rtbChatIn.AppendText(" has left the Chat "); // if(logging) // { // logwriter.WriteLine(tokens[1]+" has left the Chat"); // } lbChatters.Items.Remove(tokens[1].Trim(new char[]...{' ',' '})); } if (tokens[0] == "QUIT") ...{ ns.Close(); clientsocket.Close(); keepalive = false; statusBar1.Text = "服务器端已停止"; connected= false; btnSend.Enabled = false; btnDisconnect.Enabled = false; } } catch(Exception)...{} } } private void QuitChat() ...{ if(connected) ...{ try ...{ string command = "GONE|" + clientname; Byte[] outbytes = System.Text.Encoding.ASCII.GetBytes(command.ToCharArray()); ns.Write(outbytes,0,outbytes.Length); clientsocket.Close(); } catch(Exception ex) ...{ MessageBox.Show(ex.Message); } } // if(logging) // logwriter.Close(); if(receive != null && receive.IsAlive) receive.Abort(); this.Text = "客户端"; connected = false; } private void btnSend_Click(object sender, System.EventArgs e) ...{ if(connected) ...{ try ...{ string command = "CHAT|" + clientname+": "+ChatOut.Text+" "; Byte[] outbytes = System.Text.Encoding.ASCII.GetBytes(command.ToCharArray()); ns.Write(outbytes,0,outbytes.Length); //clientsocket.Close(); } catch(Exception ex) ...{ MessageBox.Show(ex.Message); } } } private void btnConnect_Click(object sender, System.EventArgs e) ...{ EstablishConnection(); RegisterWithServer(); if(connected) ...{ receive = new Thread(new ThreadStart(ReceiveChat)); receive.Start(); } } private void btnDisconnect_Click(object sender, System.EventArgs e) ...{ QuitChat(); } }}