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https://issues.apache.org/jira/browse/AMQ-3123?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Timothy Bish updated AMQ-3123:
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Fix Version/s: NEEDS_REVIEWED
> ajax client receives incorrect messages when subscribed to multiple topics
> --------------------------------------------------------------------------
>
> Key: AMQ-3123
> URL: https://issues.apache.org/jira/browse/AMQ-3123
> Project: ActiveMQ
> Issue Type: Bug
> Affects Versions: 5.4.2
> Reporter: Alex Dean
> Fix For: NEEDS_REVIEWED
>
> Attachments: undelivered_messages_need_associated_consumer.patch
>
>
> When an ajax client is subscribed to multiple topics, the "id" attribute of a
> returned <response> element indicates to JavaScript which callback function
> should process the message. Currently, the MessageListenerServlet returns
> multiple copies of each message, 1 per subscription. So all callback
> functions will receive all messages.
> For example, if I send messages 'A1' and 'A2' to /topic/topicA, and messages
> 'B1' and 'B2' to /topic/topicB, my ajax client gets the following message:
> <ajax-response>
> <response id='handlerA' destination='topic://topicA' >A1</response>
> <response id='handlerA' destination='topic://topicA' >B1</response>
> <response id='handlerA' destination='topic://topicA' >A2</response>
> <response id='handlerA' destination='topic://topicA' >B2</response>
> <response id='handlerB' destination='topic://topicB' >A1</response>
> <response id='handlerB' destination='topic://topicB' >B1</response>
> <response id='handlerB' destination='topic://topicB' >A2</response>
> <response id='handlerB' destination='topic://topicB' >B2</response>
> </ajax-response>
> Further, these messages are constantly re-delivered to the client. (They are
> never removed from the unconsumedMessages linked list in AjaxListener.)
> If
> https://issues.apache.org/jira/secure/attachment/12467757/all_messages_are_delivered_to_ajax_clients.patch
> from https://issues.apache.org/jira/browse/AMQ-3094 is applied, the
> duplication is reduced, but the "id" values for the "topicB" messages are
> still incorrect.
> <ajax-response>
> <response id='handlerA' destination='topic://topicA' >A1</response>
> <response id='handlerA' destination='topic://topicA' >B1</response>
> <response id='handlerA' destination='topic://topicA' >A2</response>
> <response id='handlerA' destination='topic://topicA' >B2</response>
> </ajax-response>
> I've attached a test which demonstrates the problem. This patch will
> conflict with the one attached to AMQ-3094, but the conflicts should be easy
> to resolve.
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