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From ilya goberman <>
Subject Bug in Tomcat Comet. Event CometEvent.EventType.END is not fied when connection closed.
Date Thu, 20 Jan 2011 22:40:04 GMT

I upgraded to Tomcat 7.0.6 and noticed another problem that did not exist in Tomcat 6: event
CometEvent.EventType.END is not fired when client connection is closed.
It is very easy to duplicate. The server and client code is below. You would need to open
html page in a browser and press "TEST". This should print "Begin Event" in the server. If
you close the browser (close connection), the "End Event" is not printed. It is printed with
Tomcat 6.

It is similar to bug, that marked
as fixed. Not sure if it is related or not.

package test;


import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;

import org.apache.catalina.comet.CometEvent;
import org.apache.catalina.comet.CometProcessor;

public class TomcatBug extends HttpServlet implements CometProcessor {

    public void event(CometEvent event) throws IOException, ServletException {
        if (event.getEventType() == CometEvent.EventType.BEGIN) {
            System.out.println("Begin Event");
        else if (event.getEventType() == CometEvent.EventType.ERROR) {
            System.out.println("Error Event");
        else if (event.getEventType() == CometEvent.EventType.END) {
            System.out.println("End Event");

CLIENT (html):
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "">
    <input type="button" value="TEST" onclick="test(); return false;" />

    <script type="text/javascript">
        function test() {
            var api = new XMLHttpRequest;
            api.onreadystatechange = onreadystatechange;

  "GET", "http://localhost/Test/Controller", true);


        function onreadystatechange() {



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