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.net平台下socket异步通讯

  1,首先添加两个windows窗体项目,一个作为服务端server,一个作为客户端Client
  2,然后添加服务端代码,添加命名空间,界面上添加TextBox控件
  using System.Net;
  using System.Net.Sockets;
  3,FormLoad方法添加代码
  private void Form1_Load(object sender, EventArgs e)
  {
  IPEndPoint epServer = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 7878);//IP地址和端口号
  Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);//定义socket
  socket.Bind(epServer);//绑定
  socket.Listen(10);//监听
  socket.BeginAccept(new AsyncCallback(RecVing), socket);//异步接收,回调方法为RecVing
  }
  4,添加回调方法代码
  private void RecVing(IAsyncResult rec_socket)
  {
  string cmdstr = "";
  Socket sc = (Socket)rec_socket.AsyncState;
  Socket socket = sc.EndAccept(rec_socket);
  byte[] bytes = new byte[1024];
  int i = socket.Receive(bytes);
  cmdstr = Encoding.UTF8.GetString(bytes, 0, i);
  showstrs(cmdstr);
  sc.BeginAccept(new AsyncCallback(RecVing), sc);
  }
  5,添加showstrs方法,
  定义委托private delegate void shixudong_invoke(string invokefun);
  private void showstrs(string recv_strs)
  {
  if (recv_strs.Length != 0)
  {
  if (this.InvokeRequired)
  {
  shixudong_invoke invoke = new shixudong_invoke(showstrs);
  this.Invoke(invoke, (object)recv_strs);
  }
  else
  {
  textBox1.Text = recv_strs;
  }
  }
  }
  6,到此为止,服务端已经添加完毕
  7,客户端代码,首先跟服务端一样,添加命名空间,在界面上添加button事件
  private void button1_Click(object sender, EventArgs e)
  {
  IPEndPoint IPEndPoint = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 7878);//IP,端口号
  Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
  socket.BeginConnect(IPEndPoint, new AsyncCallback(Sending), socket);//回调方法Sending
  }
  8,添加回调方法,代码如下
  private void Sending(IAsyncResult rec_socket)
  {
  Socket socket = (Socket)rec_socket.AsyncState;
  try托福答案
  {
  if (socket.Connected)
  {
  byte[] msgBuff = Encoding.UTF8.GetBytes(textBox1.Text);
  socket.Send(msgBuff);
  //socket.Accept();
  }
  else
  {
  Console.WriteLine("Error!", "Error!");
  }
  }
  catch
  {
  Console.WriteLine("Error!", "Error!");
  }
  }
  9,到此为止,客户端代码已经完成,调试的时候先启动服务端,然后启动客户端

posted on 2014-05-12 23:38 haosola 阅读(...) 评论(...) 编辑 收藏

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