package jxm.JWS;
import jxm.JWS.EX.InvalidDataException;
import jxm.JWS.FR.FramedataImpl1;
import jxm.JWS.HS.HandshakeImpl1Server;
import jxm.JWS.DF.Draft;
import jxm.JWS.EX.InvalidHandshakeException;
import jxm.JWS.FR.Framedata;
import jxm.JWS.FR.Framedata.Opcode;
import jxm.JWS.HS.ClientHandshake;
import jxm.JWS.HS.ServerHandshake;
import jxm.JWS.HS.ServerHandshakeBuilder;
import java.net.InetSocketAddress;
/**
* 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 jxm._.JWS.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 jxm._.JWS.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 jxm._.JWS.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 jxm._.JWS.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 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.
* <p/>
* The default implementation allows access from all remote domains, but
* only on the port that this WebSocketServer is listening on.
* <p/>
* 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();
}
}