form1.cs

异步套接字客户端源程序用c#实现

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Net;//新加的
using System.Net.Sockets;//新加的
using System.Threading;//新加的

namespace Sock_Conn
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.TextBox textBox1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.TextBox textBox2;
		private System.Windows.Forms.Button button2;
		private IPAddress myIP=IPAddress.Parse("127.0.0.1");//新加的
		private IPEndPoint  MyServer;//新加的 
		private Socket sock;
	 
		private static ManualResetEvent connectDone = 
			new ManualResetEvent(false);
		private static ManualResetEvent sendDone = 
			new ManualResetEvent(false);
	 
 

		private System.Windows.Forms.StatusBar statusBar1;
		private System.Windows.Forms.StatusBarPanel statusBarPanel1;
		private System.Windows.Forms.Button button3;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.Label label4;
		private System.Windows.Forms.RichTextBox richTextBox1;
		private System.Windows.Forms.RichTextBox richTextBox2;
		private System.Windows.Forms.GroupBox groupBox1;
		private System.Windows.Forms.TextBox textBox3;//新加的
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form1()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			//
			// TODO: Add any constructor code after InitializeComponent call
			//
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.statusBarPanel1 = new System.Windows.Forms.StatusBarPanel();
			this.label4 = new System.Windows.Forms.Label();
			this.label1 = new System.Windows.Forms.Label();
			this.label2 = new System.Windows.Forms.Label();
			this.label3 = new System.Windows.Forms.Label();
			this.statusBar1 = new System.Windows.Forms.StatusBar();
			this.textBox2 = new System.Windows.Forms.TextBox();
			this.textBox1 = new System.Windows.Forms.TextBox();
			this.button1 = new System.Windows.Forms.Button();
			this.button2 = new System.Windows.Forms.Button();
			this.button3 = new System.Windows.Forms.Button();
			this.richTextBox1 = new System.Windows.Forms.RichTextBox();
			this.richTextBox2 = new System.Windows.Forms.RichTextBox();
			this.groupBox1 = new System.Windows.Forms.GroupBox();
			this.textBox3 = new System.Windows.Forms.TextBox();
			((System.ComponentModel.ISupportInitialize)(this.statusBarPanel1)).BeginInit();
			this.groupBox1.SuspendLayout();
			this.SuspendLayout();
			// 
			// statusBarPanel1
			// 
			this.statusBarPanel1.Width = 300;
			// 
			// label4
			// 
			this.label4.Location = new System.Drawing.Point(24, 160);
			this.label4.Name = "label4";
			this.label4.Size = new System.Drawing.Size(88, 23);
			this.label4.TabIndex = 11;
			this.label4.Text = "发送信息：";
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(24, 32);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(72, 23);
			this.label1.TabIndex = 0;
			this.label1.Text = "服务器IP：";
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(24, 64);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(72, 23);
			this.label2.TabIndex = 2;
			this.label2.Text = "请求端口：";
			// 
			// label3
			// 
			this.label3.Location = new System.Drawing.Point(24, 96);
			this.label3.Name = "label3";
			this.label3.Size = new System.Drawing.Size(80, 23);
			this.label3.TabIndex = 10;
			this.label3.Text = "接受信息：";
			// 
			// statusBar1
			// 
			this.statusBar1.Location = new System.Drawing.Point(0, 265);
			this.statusBar1.Name = "statusBar1";
			this.statusBar1.Panels.AddRange(new System.Windows.Forms.StatusBarPanel[] {
																						  this.statusBarPanel1});
			this.statusBar1.ShowPanels = true;
			this.statusBar1.Size = new System.Drawing.Size(376, 20);
			this.statusBar1.TabIndex = 6;
			// 
			// textBox2
			// 
			this.textBox2.Location = new System.Drawing.Point(120, 64);
			this.textBox2.Name = "textBox2";
			this.textBox2.Size = new System.Drawing.Size(152, 21);
			this.textBox2.TabIndex = 4;
			this.textBox2.Text = "6688";
			// 
			// textBox1
			// 
			this.textBox1.Location = new System.Drawing.Point(120, 32);
			this.textBox1.Name = "textBox1";
			this.textBox1.Size = new System.Drawing.Size(152, 21);
			this.textBox1.TabIndex = 1;
			this.textBox1.Text = "";
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(24, 224);
			this.button1.Name = "button1";
			this.button1.TabIndex = 3;
			this.button1.Text = "请求连接";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// button2
			// 
			this.button2.Location = new System.Drawing.Point(272, 224);
			this.button2.Name = "button2";
			this.button2.Size = new System.Drawing.Size(75, 24);
			this.button2.TabIndex = 5;
			this.button2.Text = "关闭连接";
			this.button2.Click += new System.EventHandler(this.button2_Click);
			// 
			// button3
			// 
			this.button3.Location = new System.Drawing.Point(152, 224);
			this.button3.Name = "button3";
			this.button3.TabIndex = 8;
			this.button3.Text = "发送消息";
			this.button3.Click += new System.EventHandler(this.button3_Click);
			// 
			// richTextBox1
			// 
			this.richTextBox1.Location = new System.Drawing.Point(120, 96);
			this.richTextBox1.Name = "richTextBox1";
			this.richTextBox1.Size = new System.Drawing.Size(256, 48);
			this.richTextBox1.TabIndex = 12;
			this.richTextBox1.Text = "";
			// 
			// richTextBox2
			// 
			this.richTextBox2.Location = new System.Drawing.Point(120, 160);
			this.richTextBox2.Name = "richTextBox2";
			this.richTextBox2.Size = new System.Drawing.Size(256, 48);
			this.richTextBox2.TabIndex = 13;
			this.richTextBox2.Text = "";
			// 
			// groupBox1
			// 
			this.groupBox1.Controls.AddRange(new System.Windows.Forms.Control[] {
																					this.textBox3});
			this.groupBox1.Location = new System.Drawing.Point(272, 24);
			this.groupBox1.Name = "groupBox1";
			this.groupBox1.Size = new System.Drawing.Size(104, 64);
			this.groupBox1.TabIndex = 14;
			this.groupBox1.TabStop = false;
			this.groupBox1.Text = "注册（昵称）";
			// 
			// textBox3
			// 
			this.textBox3.Location = new System.Drawing.Point(8, 24);
			this.textBox3.Name = "textBox3";
			this.textBox3.Size = new System.Drawing.Size(88, 21);
			this.textBox3.TabIndex = 0;
			this.textBox3.Text = "";
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(376, 285);
			this.Controls.AddRange(new System.Windows.Forms.Control[] {
																		  this.groupBox1,
																		  this.richTextBox2,
																		  this.richTextBox1,
																		  this.label4,
																		  this.label3,
																		  this.button3,
																		  this.statusBar1,
																		  this.button2,
																		  this.textBox2,
																		  this.button1,
																		  this.label2,
																		  this.textBox1,
																		  this.label1});
			this.MaximizeBox = false;
			this.MinimizeBox = false;
			this.Name = "Form1";
			this.Text = "聊天程序－客户端";
			((System.ComponentModel.ISupportInitialize)(this.statusBarPanel1)).EndInit();
			this.groupBox1.ResumeLayout(false);
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		private void button1_Click(object sender, System.EventArgs e)
		{
			
			try
			{
				myIP =IPAddress.Parse(textBox1.Text);
			
			}
			catch{MessageBox.Show("您输入的IP地址格式不正确，请重新输入！");}
			try
			{
				MyServer=new IPEndPoint(myIP,Int32.Parse(textBox2.Text));
				sock =new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);
			
				sock.BeginConnect( MyServer, 
					new AsyncCallback(ConnectCallback), sock);
				connectDone.WaitOne();

				


				
			}
			catch(Exception ee){MessageBox.Show(ee.Message);}
		}
		private  void ConnectCallback(IAsyncResult ar) 
		{
			try 
			{
			
				Socket client = (Socket) ar.AsyncState;

		
				client.EndConnect(ar);
                
				try
				{
					byte[] byteData = System.Text.Encoding.BigEndianUnicode.GetBytes("准备完毕，可以通话！"+"\n\r");

					
					sock.BeginSend(byteData, 0, byteData.Length, 0,
						new AsyncCallback(SendCallback), sock);
				
				}
				catch(Exception ee){MessageBox.Show(ee.Message);}


statusBarPanel1.Text="与主机"+textBox1.Text+"端口"+textBox2.Text+"建立连接！";
				 
				Thread thread=new Thread(new ThreadStart(targett));
				thread.Start();
			
				connectDone.Set();
			} 
			catch  
			{
				
			}
		}

		private void button2_Click(object sender, System.EventArgs e)
		{
			try
			{
				sock.Close();
				statusBarPanel1.Text="与主机"+textBox1.Text+"端口"+textBox2.Text+"断开连接！";
			}
			catch{MessageBox.Show("连接尚未建立，断开无效！");}
		}

		private void button3_Click(object sender, System.EventArgs e)
	 	{
			byte[] byteData = System.Text.Encoding.BigEndianUnicode.GetBytes(textBox3.Text+">>>"+richTextBox2.Text+"\r\n");


			sock.BeginSend(byteData, 0, byteData.Length, 0,
				new AsyncCallback(SendCallback), sock);

			 
		}

		private  void SendCallback(IAsyncResult ar) 
		{  
			try 
			{
				
				Socket client = (Socket) ar.AsyncState;


				sendDone.Set();
			} 
			catch (Exception ee) 
			{
				MessageBox.Show(ee.Message);
			}
		}


		private void targett()
		{

			 try 
			 {

				 StateObject state = new StateObject();
				 state.workSocket = sock;

				 sock.BeginReceive( state.buffer, 0, StateObject.BufferSize, 0,
					 new AsyncCallback(ReceiveCallback), state);
			 } 
			 catch(Exception ee)  
			 {
				 MessageBox.Show(ee.Message); 
			 }
		

		}
	
		private  void ReceiveCallback( IAsyncResult ar ) 
		{
			try 
			{
	
				StateObject state = (StateObject) ar.AsyncState;
				Socket client = state.workSocket;

			
				int bytesRead = client.EndReceive(ar);

				 
				

					state.sb.Append(System.Text.Encoding.BigEndianUnicode.GetString(state.buffer,0,bytesRead));
                    string aa=state.sb.ToString();
                    state.sb.Remove(0,aa.Length);
                    richTextBox1.AppendText(aa+"\r\n");
	
					client.BeginReceive(state.buffer,0,StateObject.BufferSize,0,
						new AsyncCallback(ReceiveCallback), state);
				
				 
			} 
			catch 
			{
				 
			}
		}


	
	
	}
}