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https://issues.apache.org/activemq/browse/AMQ-2948?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=62198#action_62198
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Alex Dean commented on AMQ-2948:
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There's a separate minor change in the attached patch, which ensures that the
Content-Type header is always set to 'text/xml'.
In current svn code, this header is only set when a message is delivered. When
a timeout occurs (and an empty <ajax-response></ajax-response> is returned),
the Content-Type header is set to 'text/plain'. The jQuery adapter attempts to
parse the responseXML property of the response, which is not populated due to
the Content-Type header being set to 'text/plain'.
This is seen in FIrebug as a 200 response resulting in a parseerror.
(Successful response which fired the error-handling ajax callback!)
> Support ajax clients in multiple windows/tabs in a single browser
> -----------------------------------------------------------------
>
> Key: AMQ-2948
> URL: https://issues.apache.org/activemq/browse/AMQ-2948
> Project: ActiveMQ
> Issue Type: Bug
> Affects Versions: 5.4.1
> Environment: OSX 10.6
> Centos 5.4
> Reporter: Alex Dean
> Attachments: support-multiple-ajax-clients-per-session.patch
>
>
> In current ajax code, there is a 1-1 relationship between ajax client and
> session. Since multiple windows in the same browser share the same session,
> it's impossible for the ajax code to update both windows. Either 1 or the
> other will receive messages, but not both.
> The attached patch allows an optional 'clientId' string to be passed to the
> JavaScript amq.init() function, similar to that supported by the REST
> servlet. This clientId string is sent to the server with every ajax request.
> In MessageListenerServlet, a new consumer is created for every new
> sessionid+clientId, allowing multiple windows in the same browser to send &
> receive messages independently.
> For some (currently) unknown reason, IE7 cannot send messages from multiple
> windows. 2 IE7 windows can receive messages independently with no errors,
> but once either IE7 window sends a message, both windows cease receiving
> data. This behavior is not seen in FF (OSX or WinXP) or Safari (OSX). All
> those browsers are able to send & receive simultaneously in multiple windows
> with no errors.
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