/*  File: EchoClient.java
 *
 *  An applet to open a socket to the ThreadedEchoServer class.
 *  This is set up to run on port 4882 and requires you to independently 
 *  run the Server on the web host.
 * 
 */
 
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.net.*;

public class EchoClient extends java.applet.Applet
                                implements ActionListener
{  
  TextArea t1, t2;
  Button send;
  Socket t;
  BufferedReader in;
  PrintWriter out;
 
  public void init()
  {
    t1 = new TextArea( "Type your message here.", 5, 40 );
    t2 = new TextArea( "Echo Server replies will appear here.", 5, 40 );
    send = new Button ( "Send >>>" );
    send.addActionListener( this );
    setLayout( new FlowLayout( FlowLayout.LEFT, 5,5 ) );
    add( t1 );
    add( send );
    add( t2 );

    try
    {
      t = new Socket( this.getCodeBase().getHost(), 4882 );  
      in = new BufferedReader(
             new InputStreamReader( t.getInputStream() ) );
      out = new PrintWriter( t.getOutputStream(), true );

      String str = in.readLine();
      t2.setText( str );
    }
    catch( Exception ex )
    { System.out.println( ex );
      t1.setText( ex.toString() );
    }
  } 

  public void actionPerformed ( ActionEvent e )
  {
      try
      {
        out.println( t1.getText() );
        t1.setText( "Sent" );
        String str = in.readLine();
        t2.setText( str );
      }
      catch ( IOException ex )
      { System.out.println( ex );
        t1.setText( ex.toString() );
      }
  }
}