日期:2014-05-18  浏览次数:21234 次

c#.net同步异步SOCKET通讯和多线程

c#.net同步异步SOCKET通讯和多线程
2009年12月18日
  基于TCP协议的发送和接收端
  TCP协议的接收端
  using System.Threading ; //使用到线程
  using System.IO ; //使用到StreamReader类
  int port = 8000; //定义侦听端口号
  private Thread thThreadRead; //创建线程,用以侦听端口号,接收信息
  private TcpListener tlTcpListen; //侦听端口号
  private bool blistener = true; //设定标示位,判断侦听状态
  private StreamReader srRead;
  private System.Windows.Forms.StatusBar statusBar1;
  private System.Windows.Forms.Button button1;
  private System.Windows.Forms.ListBox listBox1; //从网络基础数据流中读取数据
  private TcpClient tcClient ;
  private void Listen ( )
  {
  try
  {
  tlTcpListen = new TcpListener ( port ) ; //以8000端口号来初始化TcpListener实例
  tlTcpListen.Start ( ) ; //开始监听
  statusBar1.Text = "正在监听..." ;
  tcClient = tlTcpListen.AcceptTcpClient ( ) ; //通过TCP连接请求
  nsStream = tcClient.GetStream ( ) ; //获取用以发送、接收数据的网络基础数据流
  srRead=new StreamReader(nsStream);//以得到的网络基础数据流来初始化StreamReader实例
  statusBar1.Text = "已经连接!";
  while( blistener ) //循环侦听
  {
  string sMessage = srRead.ReadLine();//从网络基础数据流中读取一行数据
  if ( sMessage == "STOP" ) //判断是否为断开TCP连接控制码
  {
  tlTcpListen.Stop(); //关闭侦听
  nsStream.Close(); //释放资源
  srRead.Close();
  statusBar1.Text = "连接已经关闭!" ;
  thThreadRead.Abort(); //中止线程
  return;
  }
  string sTime = DateTime.Now.ToShortTimeString ( ) ; //获取接收数据时的时间
  listBox1.Items.Add ( sTime + " " + sMessage ) ;
  }
  }
  catch ( System.Security.SecurityException )
  {
  MessageBox.Show ( "侦听失败!" , "错误" ) ;
  }
  }
  //开始监听
  private void button1_Click(object sender, System.EventArgs e)
  {
  thThreadRead = new Thread ( new ThreadStart ( Listen ) );
  thThreadRead.Start();//启动线程          
  button1.Enabled=false;
  }
  // 清理所有正在使用的资源。
  protected override void Dispose( bool disposing )
  {
  try
  {
  tlTcpListen.Stop(); //关闭侦听
  nsStream.Close();
  srRead.Close();//释放资源
  thThreadRead.Abort();//中止线程
  }
  catch{}
  if( disposing )
  {
  if (components != null)
  {
  components.Dispose();
  }
  }
  base.Dispose( disposing );
  }
  TCP协议的发送端
  using System.Threading; //使用到线程
  using System.IO; //使用到StreamWriter类
  private StreamWriter swWriter; //用以向网络基础数据流传送数据 
  private TcpClient tcpClient;
  private System.Windows.Forms.Button button1;
  private System.Windows.Forms.TextBox textBox1;
  private System.Windows.Forms.Button button2;
  private System.Windows.Forms.TextBox textBox2;
  private System.Windows.Forms.StatusBar statusBar1;
  private System.Windows.Forms.Label label1;
  private System.Windows.Forms.Label label2; //通过它实现向远程主机提出TCP连接申请 
  private bool tcpConnect = false; //定义标识符,用以表示TCP连接是否建立
  //连接 
  private void button1_Click(object sender, System.EventArgs e)
  {
  IPAddress ipRemote ;
  try
  {
  ipRemote = IPAddress.Parse ( textBox1.Text ) ;
  }
  catch //判断给定的IP地址的合法性
  {
  MessageBox.Show ( "输入的IP地址不合法!" , "错误提示!" ) ;
  return ;
  }
  IPHostEntry ipHost ;
  try
  {
  ipHost = Dns.Resolve ( textBox1.Text ) ; 
  }
  catch //判断IP地址对应主机是否在线
  {
  MessageBox.Show ("远程主机不在线!" , "错误提示!" ) ;
  return ;
  }
  string sHostName = ipHost.HostName ;
  try
  {
  TcpClient tcpClient = new TcpClient(sHostName,8000);//对远程主机的8000端口提出TCP连接申请
  nsStream = tcpClient.GetStream();//通过申请,并获取传送数据的网络基础数据流  
  swWriter = new StreamWriter(nsStream);//使用获取的网络基础数据流来初始化StreamWriter实例
  button1.Enabled = false ;
  button2.Enabled =