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   * Copyright (c) 2007-2010 Oracle and/or its affiliates. All rights reserved.
   * The contents of this file are subject to the terms of either the GNU
   * General Public License Version 2 only ("GPL") or the Common Development
   * and Distribution License("CDDL") (collectively, the "License").  You
   * may not use this file except in compliance with the License.  You can
  * obtain a copy of the License at
  * or packager/legal/LICENSE.txt.  See the License for the specific
  * language governing permissions and limitations under the License.
  * When distributing the software, include this License Header Notice in each
  * file and include the License file at packager/legal/LICENSE.txt.
  * GPL Classpath Exception:
  * Oracle designates this particular file as subject to the "Classpath"
  * exception as provided by Oracle in the GPL Version 2 section of the License
  * file that accompanied this code.
  * Modifications:
  * If applicable, add the following below the License Header, with the fields
  * enclosed by brackets [] replaced by your own identifying information:
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  * Contributor(s):
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  * only the GPL Version 2, indicate your decision by adding "[Contributor]
  * elects to include this software in this distribution under the [CDDL or GPL
  * Version 2] license."  If you don't indicate a single choice of license, a
  * recipient has the option to distribute your version of this file under
  * either the CDDL, the GPL Version 2 or to extend the choice of license to
  * its licensees as provided above.  However, if you add GPL Version 2 code
  * and therefore, elected the GPL Version 2 license, then the option applies
  * only if the new code is made subject to such option by the copyright
  * holder.
 package com.sun.grizzly.cometd.bayeux;

Bayeux Connect implementation. See for the technical details. // here's what the client then POST's: //----------------- // CLIENT -> SERVER //----------------- [ { "channel": "/meta/connect", "clientId": "SOME_UNIQUE_CLIENT_ID", "connectionType": "iframe", // optional "authToken":"SOME_NONCE_PREVIOUSLY_PROVIDED_BY_SERVER" } // , ... ] // NOTE: data should be POSTed with an encoding of // application/x-www-form-urlencoded, and the preceeding payload is // expected to be stored in the "message" parameter // the server now replies with the preamble followed by any number of // messages encoded in the tunnel-specific envelope: //----------------- // SERVER -> CLIENT //----------------- <title>Comet -- cleaning up web development</title> <script type="text/javascript"> window.parent.cometd.deliver([ { // user-sent data "channel": "/meta/connect", "successful": true, "error": "", "connectionId": "/meta/connections/26", "clientId": "SOME_UNIQUE_CLIENT_ID", "timestamp": "TimeAtServer", // optional "authToken": "SOME_NONCE_THAT_NEEDS_TO_BE_PROVIDED_SUBSEQUENTLY" } ]); </script> <script type="text/javascript"> window.parent.cometd.deliver([ { // user-sent data "data": { "someField": ["some", "random", "values"], }, // the usual message meta-data "channel": "/originating/channel", // event ID "id": "slkjdlkj32", "timestamp": "TimeAtServer", // optional meta-data "authToken": "SOME_NONCE_THAT_NEEDS_TO_BE_PROVIDED_SUBSEQUENTLY" }, { "data": { "blah blah": ["more", "random", "values"], }, // the usual message meta-data "channel": "/originating/channel", // event ID "id": "slkjdlkj31", "timestamp": "TimeAtServer", "authToken": "SOME_NONCE_THAT_NEEDS_TO_BE_PROVIDED_SUBSEQUENTLY" } // , ... ]); </script>
... <script type="text/javascript"> window.parent.cometd.tunnelCollapse(); </script>

Jeanfrancois Arcand
abstract public class Connect extends VerbBase{
    public final static String HTML_HEADER = 
        "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"" +
        "\"\">" +
        "<html>\n<head>\n<title>Grizzly Cometd</title>" +
        "\n<script type=\"text/javascript\">\nwindow.parent.cometd.deliver(";
    public final static String DATA_WRAPPER_HEADER =
        ");\n</script>\n</head>\n<body>\n\n<script type=\"text/javascript\">" +
    public final static String DATA_WRAPPER_FOOTER =            
        "</script>\n<br>\n<script type=\"text/javascript\">\n"
      + "window.parent.cometd.tunnelCollapse();\n</script>\n</body>\n</html>";
    public final static String META_CONNECT ="/meta/connect";
    protected String connectionType;
    public Connect() {
         = ..;
         = ;
    public boolean isValid() {
        return ( != null && getMetaChannel().equals(getChannel()));
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