Cannot receive message on temporary queue

Question

I am executing the following code in a web application.
          It is sending a message to a JMS queue. The MDB
          listening to that queue processes the message
          and posts a reply to the temporary queue specified in
          the JMS Reply to field. The queue browser code below
          shows that the message is in the queue, but the receive
          times out and returns null. My question is why can't the
          receiver get the message?
          Am I missing something?
          Thanks in advance,
          -Doug.
          =====WEBAPP SIDE===========
          QueueConnection connection = null;
          QueueSession session = null;
          QueueSender sender = null;
          QueueReceiver receiver = null;
          Queue respQueue = null;
          try
          connection = QUEUE_CON_FACTORY.createQueueConnection();
          connection.start();
          session = connection.createQueueSession(false, Session.CLIENT_ACKNOWLEDGE);
          TextMessage textMessage = session.createTextMessage();
          textMessage.setText(xmlInput);
          if (wait)
          respQueue = session.createTemporaryQueue();
          textMessage.setJMSReplyTo(respQueue);
          receiver = session.createReceiver(respQueue);
          sender = session.createSender(INPUT_QUEUE);
          sender.send(textMessage);
          if (wait)
          QueueBrowser qB = session.createBrowser(respQueue);
          Enumeration enum = qB.getEnumeration();
          while (enum.hasMoreElements())
          Message msg = (Message) enum.nextElement();
          LOG.debug("msg = " + msg);
          return ((TextMessage) receiver.receive(10000)).getText();
          return DEFAULT_RESPONSE;
          =======MDB side============
          QueueConnection queueConnection = QUEUE_CON_FACTORY.createQueueConnection();
          queueConnection.start();
          QueueSession queueSession = queueConnection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
          TextMessage textMsg = queueSession.createTextMessage();
          textMsg.setText(buffer.toString());
          QueueSender queueSender = queueSession.createSender((Queue)getReplyDestination());
          queueSender.send(textMsg);
          queueSender.close();
          QueueBrowser qB = queueSession.createBrowser((Queue)bpelCtx.getReplyDestination());
          Enumeration enum = qB.getEnumeration();
          while (enum.hasMoreElements())
          Message msg = (Message) enum.nextElement();
          LOG.debug("msg = " + msg);
          queueSession.close();
          queueConnection.close();
          ==== LOG ====
          [DEBUG] 2006-01-16 14:51:17,780 MDB - msg = TextMessage[ID:N<192225.1137444677780.0>, <unique-id-response xmlns
          ="htt...]
          [DEBUG] 2006-01-16 14:51:27,374 WEBAPP -
          msg = TextMessage[ID:N<192225.1137444677780.0>, <unique-id-response xmlns="htt..
          .]

Answer 1

At first glance, this looks like a standard design to me. Does the same problem occur when there are no browsers?
          Tom
          (Performance note: It is quite CPU-intensive to continually create and close connections/temporary destinations/sessions/consumers/producers. Cache and/or pool them for re-use when possible. Use a cached anonymous producer on the MDB for sending replies [pass null for the dest when creating it, and specify the dest as a send parameter].)