From: Michał Orzechowski <michal.orzechowski_at_oneinfo.pl>
Date: Wed, 03 Dec 2008 11:20:59 +0100

Hello,

    I'm trying to develop simple app that:
   
    1. Allows clients to subscribe to a channel. The index.html page is
a client's page where new data should be published.
        Client logic is implemented using Dojo Toolkit v 1.1.1 (standard
subscribe method)

    2. Publish new data using the servlet. The post.html is a admin page
from witch I send data to the servlet.
        Servlet's logic is implemented with Grizzly Comet/Bayeux
(default GlassFish V3 components ...)

    Here is what i do:

    1. Open client page in browser A
    2. Open client page in browser B (tab 1)
    3. Open admin page in browser B (tab 2)
    4. Send data from admin page to servlet ...
      
    .. and nothing happens .. clients aren't notified until i open new
client page in browser B in tab 3 (or browser A in tab 2 - no matter)!

    It looks like server is holding the data and i really don't know
why. Its really strange and i hope maybe some would be able to help me?

    Servlet code :

public class DataServlet extends HttpServlet {

    CometContext context;

    @Override
    public void init(ServletConfig config) throws ServletException {
            super.init(config);
            String contextPath = "/CometApp/cometd";
            CometEngine cometEngine = CometEngine.getEngine();
            context = cometEngine.register(contextPath);
            context.setExpirationDelay(60 * 1000);
        }

    protected void processRequest(HttpServletRequest request,
HttpServletResponse response)
    throws ServletException, IOException {
        String channel = "/my/demo";
        String messageDataName = "text";
        String messageDataValue = request.getParameter("newinfo");

        if (messageDataValue != null) {
            Map<String, Object> map = new HashMap<String, Object>();
            map.put(messageDataName, dummyBussinesLogic(messageDataValue));
            Data data = new Data();
            data.setMapData(map);

            DeliverResponse deliverResponse = new DeliverResponse();
            deliverResponse.setChannel(channel);
            deliverResponse.setData(data);
            deliverResponse.setLast(true);
            deliverResponse.setFollow(true);

            context.notify(deliverResponse);

            out.println("Data is sent.");
        } else {
            out.println("No data is sent.");
        }

        response.sendRedirect("post.html");
    }

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse
response)
    throws ServletException, IOException {
        processRequest(request, response);
    }

    @Override
    protected void doPost(HttpServletRequest request,
HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }

    private String dummyBussinesLogic(String s) {
        return s.toUpperCase();
    }
}

Thanks
Michal Orzechowski