From: Shahbaz <shahbazc_at_gmail.com>
Date: Sun, 6 Apr 2008 23:03:01 -0400

Hi,
I have a Java server application which receives and sends messages to
a number of other application (I am using quickfixj.org, for those who
know what it is). I would like to add 'comet' to the server, so I can
send server updates to web browsers (and eventually receive info as
well). Following is a minimalistic example I have tried to implement.
 I get an error, which I don't really understand. I haven't done any
ajax/comet type development before so please let me know if I am
missing something obvious.

Error:
Exception in thread "main" java.lang.IllegalStateException: Grizzly
Comet hasn't been registered
        at com.sun.grizzly.comet.CometContext.addCometHandler(CometContext.java:220)
        at com.sun.grizzly.comet.CometContext.addCometHandler(CometContext.java:266)
        at com.mpn.test.CometTest.main(CometTest.java:25)

Code:
---------------------CometTest.java:
package com.mpn.test;



import java.io.IOException;


import com.sun.grizzly.comet.CometContext;

import com.sun.grizzly.comet.CometEngine;

import com.sun.grizzly.cometd.BayeuxCometHandler;




public class CometTest {

        

        public CometTest() throws IOException{
                

        }



        public static void main(String[] args) throws IOException {

                

                CometTest test = new CometTest();

                

                CometEngine cometEngine = CometEngine.getEngine();

                CometContext context=cometEngine.register("/comet");

                context.addCometHandler(new BayeuxCometHandler());

                context.notify("hello world!");
                

        }


}


-----------------------MyBayeuxCometHandler.java: (I just print out
onXXX(..) events, nothing else is changed)
package com.mpn.test;

import java.io.IOException;

import com.sun.grizzly.comet.CometEvent;
import com.sun.grizzly.cometd.BayeuxCometHandler;

public class MyBayeuxCometHandler extends BayeuxCometHandler {

        public MyBayeuxCometHandler() {
                // TODO Auto-generated constructor stub
        }

        @Override
        public String getChannel() {
                // TODO Auto-generated method stub
                return super.getChannel();
        }

        @Override
        public void onConnect(CometEvent arg0) throws IOException {
                // TODO Auto-generated method stub
                super.onConnect(arg0);
                System.out.println("onConnect: "+arg0);
        }

        @Override
        public void onDisconnect(CometEvent arg0) throws IOException {
                // TODO Auto-generated method stub
                super.onDisconnect(arg0);
                System.out.println("onDisconnect: "+arg0);
        }

        @Override
        public void onHandshake(CometEvent arg0) throws IOException {
                // TODO Auto-generated method stub
                super.onHandshake(arg0);
                System.out.println("onHandshake: "+arg0);
        }

        @Override
        public void onInterrupt(CometEvent arg0) throws IOException {
                // TODO Auto-generated method stub
                super.onInterrupt(arg0);
                System.out.println("onInterrupt: "+arg0);
        }

        @Override
        public void onPing(CometEvent arg0) throws IOException {
                // TODO Auto-generated method stub
                super.onPing(arg0);
                System.out.println("onPing: "+arg0);
        }

        @Override
        public void onPublish(CometEvent arg0) throws IOException {
                // TODO Auto-generated method stub
                super.onPublish(arg0);
                System.out.println("onPublish: "+arg0);
        }

        @Override
        public void onReconnect(CometEvent arg0) throws IOException {
                // TODO Auto-generated method stub
                super.onReconnect(arg0);
                System.out.println("onReconnect: "+arg0);
        }

        @Override
        public void onStatus(CometEvent arg0) throws IOException {
                // TODO Auto-generated method stub
                super.onStatus(arg0);
                System.out.println("onStatus: "+arg0);
        }

        @Override
        public void onSubscribe(CometEvent arg0) throws IOException {
                // TODO Auto-generated method stub
                super.onSubscribe(arg0);
                System.out.println("onSubscribe: "+arg0);
        }

        @Override
        public void onTerminate(CometEvent arg0) throws IOException {
                // TODO Auto-generated method stub
                super.onTerminate(arg0);
                System.out.println("onTerminate: "+arg0);
        }

        @Override
        public void onUnsubscribe(CometEvent arg0) throws IOException {
                // TODO Auto-generated method stub
                super.onUnsubscribe(arg0);
                System.out.println("onUnsubscribe: "+arg0);
        }

        @Override
        public void setChannel(String arg0) {
                // TODO Auto-generated method stub
                super.setChannel(arg0);
        }

}


Thanks
Shahbaz