ex-21-11

Programming Csharp Source Code(代码) Programming Csharp Source Code

// Example 21-11: Implementing a client for asynchronous network I/O

using System;
using System.Net.Sockets;
using System.Threading;
using System.Runtime.Serialization.Formatters.Binary;

public class AsynchNetworkClient
{

   static public int Main()
   {

      AsynchNetworkClient client = 
         new AsynchNetworkClient();
      return client.Run();
   }

   AsynchNetworkClient()
   {
      string serverName = "localhost";
      Console.WriteLine("Connecting to {0}", serverName);
      TcpClient tcpSocket = new TcpClient(serverName, 65000);
      streamToServer = tcpSocket.GetStream();
   }

   private int Run()
   {
      string message = "Hello Programming C#";
      Console.WriteLine(
          "Sending {0} to server.", message);

      // create a streamWriter and use it to
      // write a string to the server
      System.IO.StreamWriter writer = 
         new System.IO.StreamWriter(streamToServer);
      writer.WriteLine(message);
      writer.Flush();

      // Read response
      System.IO.StreamReader reader = 
         new System.IO.StreamReader(streamToServer);
      string strResponse = reader.ReadLine();
      Console.WriteLine("Received: {0}", strResponse);
      streamToServer.Close();
      return 0;

   }

   private NetworkStream   streamToServer;
}