Android Open Source - android_opengles Web Socket Adapter

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License

The source code is released under:
MIT License
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Java Source Code

package org.java_websocket;
//www  . jav a 2  s.  c om
import java.net.InetSocketAddress;

import org.java_websocket.drafts.Draft;
import org.java_websocket.exceptions.InvalidDataException;
import org.java_websocket.exceptions.InvalidHandshakeException;
import org.java_websocket.framing.Framedata;
import org.java_websocket.framing.Framedata.Opcode;
import org.java_websocket.framing.FramedataImpl1;
import org.java_websocket.handshake.ClientHandshake;
import org.java_websocket.handshake.HandshakeImpl1Server;
import org.java_websocket.handshake.ServerHandshake;
import org.java_websocket.handshake.ServerHandshakeBuilder;

/**
 * This class default implements all methods of the WebSocketListener that can be overridden optionally when advances functionalities is needed.<br>
 **/
public abstract class WebSocketAdapter implements WebSocketListener {

  /**
   * This default implementation does not do anything. Go ahead and overwrite it.
   * 
   * @see org.java_websocket.WebSocketListener#onWebsocketHandshakeReceivedAsServer(WebSocket, Draft, ClientHandshake)
   */
  @Override
  public ServerHandshakeBuilder onWebsocketHandshakeReceivedAsServer( WebSocket conn, Draft draft, ClientHandshake request ) throws InvalidDataException {
    return new HandshakeImpl1Server();
  }

  @Override
  public void onWebsocketHandshakeReceivedAsClient( WebSocket conn, ClientHandshake request, ServerHandshake response ) throws InvalidDataException {
  }

  /**
   * This default implementation does not do anything which will cause the connections to always progress.
   * 
   * @see org.java_websocket.WebSocketListener#onWebsocketHandshakeSentAsClient(WebSocket, ClientHandshake)
   */
  @Override
  public void onWebsocketHandshakeSentAsClient( WebSocket conn, ClientHandshake request ) throws InvalidDataException {
  }

  /**
   * This default implementation does not do anything. Go ahead and overwrite it
   * 
   * @see org.java_websocket.WebSocketListener#onWebsocketMessageFragment(WebSocket, Framedata)
   */
  @Override
  public void onWebsocketMessageFragment( WebSocket conn, Framedata frame ) {
  }

  /**
   * This default implementation will send a pong in response to the received ping.
   * The pong frame will have the same payload as the ping frame.
   * 
   * @see org.java_websocket.WebSocketListener#onWebsocketPing(WebSocket, Framedata)
   */
  @Override
  public void onWebsocketPing( WebSocket conn, Framedata f ) {
    FramedataImpl1 resp = new FramedataImpl1( f );
    resp.setOptcode( Opcode.PONG );
    conn.sendFrame( resp );
  }

  /**
   * This default implementation does not do anything. Go ahead and overwrite it.
   * 
   * @see @see org.java_websocket.WebSocketListener#onWebsocketPong(WebSocket, Framedata)
   */
  @Override
  public void onWebsocketPong( WebSocket conn, Framedata f ) {
  }

  /**
   * Gets the XML string that should be returned if a client requests a Flash
   * security policy.
   * 
   * The default implementation allows access from all remote domains, but
   * only on the port that this WebSocketServer is listening on.
   * 
   * This is specifically implemented for gitime's WebSocket client for Flash:
   * http://github.com/gimite/web-socket-js
   * 
   * @return An XML String that comforts to Flash's security policy. You MUST
   *         not include the null char at the end, it is appended automatically.
   * @throws InvalidDataException thrown when some data that is required to generate the flash-policy like the websocket local port could not be obtained e.g because the websocket is not connected.
   */
  @Override
  public String getFlashPolicy( WebSocket conn ) throws InvalidDataException {
    InetSocketAddress adr = conn.getLocalSocketAddress();
    if(null == adr){
      throw new InvalidHandshakeException( "socket not bound" );
    }
    
    StringBuffer sb = new StringBuffer( 90 );
    sb.append( "<cross-domain-policy><allow-access-from domain=\"*\" to-ports=\"" );
    sb.append(adr.getPort());
    sb.append( "\" /></cross-domain-policy>\0" );
    
    return sb.toString();
  }

}
Java Source Code List
