Return-Path: 
 <users-return-25558-apmail-activemq-users-archive=activemq.apache.org@activemq.apache.org>
Delivered-To: apmail-activemq-users-archive@www.apache.org
Received: (qmail 6451 invoked from network); 30 Sep 2010 21:54:07 -0000
Received: from unknown (HELO mail.apache.org) (140.211.11.3)
  by 140.211.11.9 with SMTP; 30 Sep 2010 21:54:07 -0000
Received: (qmail 78088 invoked by uid 500); 30 Sep 2010 21:54:06 -0000
Delivered-To: apmail-activemq-users-archive@activemq.apache.org
Received: (qmail 78058 invoked by uid 500); 30 Sep 2010 21:54:06 -0000
Mailing-List: contact users-help@activemq.apache.org; run by ezmlm
Precedence: bulk
List-Help: <mailto:users-help@activemq.apache.org>
List-Unsubscribe: <mailto:users-unsubscribe@activemq.apache.org>
List-Post: <mailto:users@activemq.apache.org>
List-Id: <users.activemq.apache.org>
Reply-To: users@activemq.apache.org
Delivered-To: mailing list users@activemq.apache.org
Received: (qmail 78050 invoked by uid 99); 30 Sep 2010 21:54:06 -0000
Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136)
    by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 30 Sep 2010 21:54:06 +0000
X-ASF-Spam-Status: No, hits=2.0 required=10.0
	tests=FREEMAIL_FROM,SPF_HELO_PASS,SPF_NEUTRAL,T_TO_NO_BRKTS_FREEMAIL,URI_HEX
X-Spam-Check-By: apache.org
Received-SPF: neutral (athena.apache.org: 216.139.236.158 is neither permitted
 nor denied by domain of julian.quindt@gmail.com)
Received: from [216.139.236.158] (HELO kuber.nabble.com) (216.139.236.158)
    by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 30 Sep 2010 21:54:01 +0000
Received: from joe.nabble.com ([192.168.236.151])
	by kuber.nabble.com with esmtp (Exim 4.63)
	(envelope-from <julian.quindt@gmail.com>)
	id 1P1R4O-00026u-Id
	for users@activemq.apache.org; Thu, 30 Sep 2010 14:53:40 -0700
Date: Thu, 30 Sep 2010 14:53:40 -0700 (PDT)
From: jule <julian.quindt@gmail.com>
To: users@activemq.apache.org
Message-ID: <1285883620571-2764553.post@n4.nabble.com>
Subject: AJAX: Error occurred in poll. HTTP result: 200, status: parsererror
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable


Hi,

I see the following log message if a poll times out and an empty response i=
s
received:

Error occurred in poll. HTTP result: 200, status: parsererror ----->
amq_jquery_adapter.js:94

Investigating this with the JS debugging tools shows the brokers response:
xhr.responseText: "<ajax-response> </ajax-response> "
xhr.responseXML: null

The log entry itself would not be a problem, but the default behaviour of
the amq.js is: It will wait for 5 seconds until it does the next poll. This
is perfectly fine in case of server-side congestion issues but it will lead
to a client not receiving messages for 5 seconds after each poll.

I overcame this issue by setting the 5 seconds error timeout to 0 seconds
but that can=C2=B4t be the solution: If the broker or the connection goes d=
own,
this configuration will lead to a client trying to poll as fast as it can
(you=C2=B4ll have thousands of tries within seconds).=20

Is this a known issue? Does anybody see the same?

Best regards
--=20
View this message in context: http://activemq.2283324.n4.nabble.com/AJAX-Er=
ror-occurred-in-poll-HTTP-result-200-status-parsererror-tp2764553p2764553.h=
tml
Sent from the ActiveMQ - User mailing list archive at Nabble.com.