ICQ/即时通讯

开发平台：
C#

Form1.cs：源码内容
							using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Net.Sockets;
using System.Threading;
using System.Net;
namespace qqserver
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		string ip;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.Button button2;
		public System.Windows.Forms.RichTextBox richTextBox1;
		public System.Collections.ArrayList userlist;
		public System.Collections.ArrayList Threadlist;
		private TcpListener listener;
		private Thread getusers;
	
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;
		public Form1()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			
			userlist=new ArrayList();
			Threadlist=new ArrayList();
			InitializeComponent();
			getusers=new Thread(new ThreadStart(setup));
		
			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}
		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != 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.button1 = new System.Windows.Forms.Button();
			this.button2 = new System.Windows.Forms.Button();
			this.richTextBox1 = new System.Windows.Forms.RichTextBox();
			this.SuspendLayout();
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(32, 24);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(72, 40);
			this.button1.TabIndex = 0;
			this.button1.Text = "start";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// button2
			// 
			this.button2.Location = new System.Drawing.Point(160, 24);
			this.button2.Name = "button2";
			this.button2.Size = new System.Drawing.Size(72, 40);
			this.button2.TabIndex = 1;
			this.button2.Text = "stop";
			this.button2.Click += new System.EventHandler(this.button2_Click);
			// 
			// richTextBox1
			// 
			this.richTextBox1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
				| System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right)));
			this.richTextBox1.Location = new System.Drawing.Point(8, 88);
			this.richTextBox1.Name = "richTextBox1";
			this.richTextBox1.Size = new System.Drawing.Size(324, 224);
			this.richTextBox1.TabIndex = 2;
			this.richTextBox1.Text = "";
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(336, 325);
			this.Controls.Add(this.richTextBox1);
			this.Controls.Add(this.button2);
			this.Controls.Add(this.button1);
			this.Name = "Form1";
			this.Text = "qqserver";
			this.Closing += new System.ComponentModel.CancelEventHandler(this.Form1_Closing);
			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 button1_Click(object sender, System.EventArgs e)
		{
			try
			{
				if(getusers.ThreadState==ThreadState.Unstarted)
				{
					getusers.Start();
				}
				else
					getusers.Resume();
				this.button1.Enabled=false;
			}
			catch(Exception ee)
			{
				MessageBox.Show(ee.ToString());
			}
		}
		public void setup()
		{
			try
			{
				string hostname=Dns.GetHostName();
				IPAddress ipAddress = Dns.GetHostByName(hostname).AddressList[0];
				MessageBox.Show(""+ipAddress.ToString());
				this.listener=new TcpListener(ipAddress,5000);
			}
			catch(Exception ee)
			{
				MessageBox.Show(ee.ToString());
			}
			
			
			listener.Start();
			
			while(true)
			{
				user users=new user(listener.AcceptSocket(),this);
				userlist.Add(users);
				Thread thread=new Thread(new ThreadStart(users.run ));
				Threadlist.Add(thread);
				thread.Start();
				
			}
		}
		private void button2_Click(object sender, System.EventArgs e)
		{
		this.button1.Enabled=true;
		getusers.Suspend();
		
		}
		private void Form1_Closing(object sender, System.ComponentModel.CancelEventArgs e)
		{
			
			this.Threadlist.Clear();
			this.userlist.Clear();
			getusers.Abort();
			this.listener.Stop();
		}
	}
}

						