// ---------------------------------------------------------------------------
// jWebSocket - Copyright (c) 2010 jwebsocket.org
// ---------------------------------------------------------------------------
// This program is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License as published by the
// Free Software Foundation; either version 3 of the License, or (at your
// option) any later version.
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
// more details.
// You should have received a copy of the GNU Lesser General Public License along
// with this program; if not, see <http://www.gnu.org/licenses/lgpl.html>.
// ---------------------------------------------------------------------------
package org.jwebsocket.console;
import org.apache.log4j.Logger;
import org.jwebsocket.api.WebSocketPacket;
import org.jwebsocket.config.JWebSocketCommonConstants;
import org.jwebsocket.config.JWebSocketServerConstants;
import org.jwebsocket.kit.WebSocketServerEvent;
import org.jwebsocket.listener.WebSocketServerTokenEvent;
import org.jwebsocket.listener.WebSocketServerTokenListener;
import org.jwebsocket.logging.Logging;
import org.jwebsocket.token.Token;
/**
* This shows an example of a simple WebSocket listener
* @author aschulze
*/
public class JWebSocketTokenListenerSample implements WebSocketServerTokenListener {
private static Logger log = Logging.getLogger(JWebSocketTokenListenerSample.class);
/**
*
* @param aEvent
*/
@Override
public void processOpened(WebSocketServerEvent aEvent) {
if (log.isDebugEnabled()) {
log.debug("Client '" + aEvent.getSessionId() + "' connected.");
}
}
/**
*
* @param aEvent
* @param aPacket
*/
@Override
public void processPacket(WebSocketServerEvent aEvent, WebSocketPacket aPacket) {
if (log.isDebugEnabled()) {
log.debug("Processing data packet '" + aPacket.getUTF8() + "'...");
}
// Here you can answer an arbitrary text package...
// this is how to easily respond to a previous client's request
// aEvent.sendPacket(aPacket);
// this is how to send a packet to any connector
// aEvent.getServer().sendPacket(aEvent.getConnector(), aPacket);
}
/**
*
* @param aEvent
* @param aToken
*/
@Override
public void processToken(WebSocketServerTokenEvent aEvent, Token aToken) {
if (log.isDebugEnabled()) {
log.debug("Client '" + aEvent.getSessionId() + "' sent Token: '" + aToken.toString() + "'.");
}
// here you can simply interpret the token type sent from the client
// according to your needs.
String lNS = aToken.getNS();
String lType = aToken.getType();
// check if token has a type and a matching namespace
if (lType != null && "my.namespace".equals(lNS)) {
// if type is "getInfo" return some server information
Token lResponse = aEvent.createResponse(aToken);
if ("getInfo".equals(lType)) {
lResponse.put("vendor", JWebSocketCommonConstants.VENDOR);
lResponse.put("version", JWebSocketServerConstants.VERSION_STR);
lResponse.put("copyright", JWebSocketCommonConstants.COPYRIGHT);
lResponse.put("license", JWebSocketCommonConstants.LICENSE);
} else {
// if unknown type in this namespace, return corresponding error message
lResponse.put("code", -1);
lResponse.put("msg", "Token type '" + lType + "' not supported in namespace '" + lNS + "'.");
}
aEvent.sendToken(lResponse);
}
}
/**
*
* @param aEvent
*/
@Override
public void processClosed(WebSocketServerEvent aEvent) {
if (log.isDebugEnabled()) {
log.debug("Client '" + aEvent.getSessionId() + "' disconnected.");
}
}
}