Android Open Source - Android-Desktop-Remote-Control Server Window

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License

The source code is released under:

GNU General Public License

Java Source Code

//   Copyright 2010 Justin Taylor
//   This software can be distributed under the terms of the
//   GNU General Public License. 
/*from   w  ww .j ava2  s  .  c om*/
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.net.*;

public class ServerWindow implements ActionListener{
  
  private RemoteDataServer server;
  
  private Thread sThread; //server thread
  
  private static final int WINDOW_HEIGHT = 200;
  private static final int WINDOW_WIDTH = 350;
  
  private String ipAddress;
  
  private JFrame window = new JFrame("Remote Desktop Server");
  
  private JLabel addressLabel = new JLabel("");
  private JLabel portLabel = new JLabel("PORT: ");
  private JTextArea[] buffers = new JTextArea[3];
  private JTextField portTxt = new JTextField(5);
  private JLabel serverMessages = new JLabel("Not Connected");
  
  private JButton connectButton = new JButton("Connect");
  private JButton disconnectButton = new JButton("Disconnect");
  
  public ServerWindow(){
    server = new RemoteDataServer();
    
    window.setSize(WINDOW_WIDTH, WINDOW_HEIGHT);
    window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    
    connectButton.addActionListener(this);
    disconnectButton.addActionListener(this);
    
    Container c = window.getContentPane();
    c.setLayout(new FlowLayout());
    
    try{
      InetAddress ip = InetAddress.getLocalHost();
      ipAddress = ip.getHostAddress();
      addressLabel.setText("IP Address: "+ipAddress);
    }
    catch(Exception e){addressLabel.setText("IP Address Could Not be Resolved");}
    
    int x;
    for(x = 0; x < 3; x++){
      buffers[x] = new JTextArea("", 1, 30);
      buffers[x].setEditable(false);
      buffers[x].setBackground(window.getBackground());
    }
    
    c.add(addressLabel);
    c.add(buffers[0]);
    c.add(portLabel);
    portTxt.setText("5444");
    c.add(portTxt);
    c.add(buffers[1]);
    c.add(connectButton);
    c.add(disconnectButton);
    c.add(buffers[2]);
    c.add(serverMessages);
    
    window.setLocationRelativeTo(null);
    window.setVisible(true);
    window.setResizable(false);
  }
  
  public void actionPerformed(ActionEvent e){
    Object src = e.getSource();
    
    if(src instanceof JButton){
      if((JButton)src == connectButton){
        int port = Integer.parseInt(portTxt.getText());
        runServer(port);
      }
        
      else if((JButton)src == disconnectButton){
        closeServer();
      }
    }
  }
  
  public void runServer(int port){
    if(port <= 9999){
      server.setPort(port);
      sThread = new Thread(server);
      sThread.start();
    }
    else{
      serverMessages.setText("The port Number must be less than 10000");
    }
  }
  
  public void closeServer(){
    serverMessages.setText("Disconnected");
    server.shutdown();
    connectButton.setEnabled(true);
  }
  
  public static void main(String[] args){
    new ServerWindow();
  }
  
  public class RemoteDataServer implements Runnable{
    int PORT;
    private DatagramSocket server;
    private byte[] buf;
    private DatagramPacket dgp;
    
    private String message;
    private AutoBot bot;
    
    public RemoteDataServer(int port){
      PORT = port;
      buf = new byte[1000];
      dgp = new DatagramPacket(buf, buf.length);
      bot = new AutoBot();
      serverMessages.setText("Not Connected");
    }
    
    public RemoteDataServer(){
      buf = new byte[1000];
      dgp = new DatagramPacket(buf, buf.length);
      bot = new AutoBot();
      serverMessages.setText("Not Connected");
    }
    
    public String getIpAddress(){
      String returnStr;
      try{
          InetAddress ip = InetAddress.getLocalHost();
          returnStr = ip.getCanonicalHostName();
      }
      catch(Exception e){ returnStr = new String("Could Not Resolve Ip Address");}
      return returnStr;
    }
    
    public void setPort(int port){
      PORT = port;
    }
    
    public void shutdown(){
      try{server.close();
        serverMessages.setText("Disconnected");}
      catch(Exception e){}
    }
    
    public void run(){
      boolean connected = false;
      try {InetAddress ip = InetAddress.getLocalHost(); 
        serverMessages.setText("Waiting for connection on " + ip.getCanonicalHostName());
        
        server = new DatagramSocket(PORT, ip);
        
        connected = true;
        connectButton.setEnabled(false);
      }
      catch(BindException e){ serverMessages.setText("Port "+PORT+" is already in use. Use a different Port"); }
      catch(Exception e){serverMessages.setText("Unable to connect");}
      
      while(connected){
        // get message from sender
        try{ server.receive(dgp);
        
          // translate and use the message to automate the desktop
          message = new String(dgp.getData(), 0, dgp.getLength());
          if (message.equals("Connectivity")){
            //send response to confirm connectivity
            serverMessages.setText("Trying to Connect");
            server.send(dgp); //echo the message back
          }else if(message.equals("Connected")){
            server.send(dgp); //echo the message back
          }else if(message.equals("Close")){
            serverMessages.setText("Controller has Disconnected. Trying to reconnect."); //echo the message back
          }else{
            serverMessages.setText("Connected to Controller");
            bot.handleMessage(message);
          }
        }catch(Exception e){
          serverMessages.setText("Disconnected");
          connected = false;}
      }
    }
  }
}

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