ICQ/即时通讯

开发平台：
C#

fserver.cs：源码内容
							using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;
using System.IO;
using System.Text;
using System.Threading ;
namespace qq
{
	/// <summary>
	/// fserver 的摘要说明。
	/// </summary>
	public class fserver : System.Windows.Forms.Form
	{
		int jieshou;
		Form1 form;
		string id;
	string path;
		Thread outputThread ;
		private TcpListener listener;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Button button1;
		Socket connection;
		System.Net.Sockets .NetworkStream socketstream;
		
		BinaryWriter writer;
		BinaryReader reader;
		private System.Windows.Forms.OpenFileDialog openFileDialog1;
		private System.Windows.Forms.Button button2;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;
		public fserver(Form1 f,string a)
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			form=f;
			this.id=a;
			InitializeComponent();
			this.jieshou=0;
			//
			// 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.label1 = new System.Windows.Forms.Label();
			this.button1 = new System.Windows.Forms.Button();
			this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
			this.button2 = new System.Windows.Forms.Button();
			this.SuspendLayout();
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(64, 32);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(120, 32);
			this.label1.TabIndex = 0;
			this.label1.Text = "发送文件";
			this.label1.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(144, 112);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(56, 48);
			this.button1.TabIndex = 1;
			this.button1.Text = "发送";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// button2
			// 
			this.button2.Location = new System.Drawing.Point(32, 112);
			this.button2.Name = "button2";
			this.button2.Size = new System.Drawing.Size(64, 48);
			this.button2.TabIndex = 2;
			this.button2.Text = "取消";
			this.button2.Click += new System.EventHandler(this.button2_Click);
			// 
			// fserver
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(264, 213);
			this.Controls.Add(this.button2);
			this.Controls.Add(this.button1);
			this.Controls.Add(this.label1);
			this.Name = "fserver";
			this.Text = "fserver";
			this.ResumeLayout(false);
		}
		#endregion
		public void sendfile()
		{
			this.label1.Text="等待对方。。。。";
			form.use.sendmessage(form.userid);
			form.use.sendmessage(id);
			form.use.sendmessage("发送文件");
			connection=listener.AcceptSocket();
			this.label1.Text="正在发送。。。。";
			socketstream=new NetworkStream(connection);
			
			writer=new BinaryWriter (socketstream);
			reader=new BinaryReader(socketstream);
			
			try 
			{
				byte[] b = new byte[1024];
				
		   	System.IO.FileInfo fle=new FileInfo(path);
			    
				
				FileStream fs= File.Open(path, FileMode.Open);
				writer.Write(fs.Length.ToString());
				writer.Write(fle.Name);
			
				while (fs.Read(b,0,b.Length) > 0) 
				{
					writer.Write(b);
				}
				b = System.Text.Encoding.ASCII.GetBytes("传输结束") ;
				writer.Write(b);
				this.label1.Text="发送结束！！！！";
				
				
				writer.Close();
				reader.Close();
				fs.Close();
				connection.Close();
				listener.Stop();
				
			} 
			catch (Exception e) 
			{
				MessageBox.Show(e.ToString());
				
			}
		}
		public void setup()
		{
			
		//	string path;
			
			if(this.openFileDialog1.ShowDialog()==DialogResult.OK)
			{
				path = this.openFileDialog1.FileName;
				
				
			}
			try
			{
				
				IPAddress ipAddress = Dns.Resolve(this.form.ip).AddressList[0];
				
				this.listener=new TcpListener(ipAddress,5002);
				listener.Start();
			outputThread =new Thread (new ThreadStart (sendfile));
				outputThread.Start ();
			
			}
			catch(Exception ee)
			{
				MessageBox.Show(ee.ToString());
			}
			
		
			
		}
		private void button1_Click(object sender, System.EventArgs e)
		{
			this.jieshou=1;
			this.setup();
		}
		private void button2_Click(object sender, System.EventArgs e)
		{
			if(this.jieshou==1)
			{
				this.outputThread.Abort();
				listener.Stop();
			}
			this.Close();
		}
	}
}

						