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https://issues.apache.org/jira/browse/APLO-215?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13399534#comment-13399534
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Hiram Chirino commented on APLO-215:
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I think this may be occurring because you close out the consuming connection
before you verify that those ACKS have been fully transmitted to the server.
Try adding a receipt header on the DISCONNECT frame and wait for that come back
before closing the socket out.
> Broker may send queued messages multiple time over SSL
> ------------------------------------------------------
>
> Key: APLO-215
> URL: https://issues.apache.org/jira/browse/APLO-215
> Project: ActiveMQ Apollo
> Issue Type: Bug
> Environment: apollo-99-trunk-20120621.153441-53
> Reporter: Lionel Cons
> Attachments: APLO-215.pl
>
>
> When putting messages in a queue and removing them with client side
> acknowledgments, Apollo may send some messages multiple times. Here is an
> example test output:
> $ perl test.pl
> producing 3000 messages... done
> consuming 1000 messages... done
> consuming 1000 messages... done
> consuming 1000 messages... done
> draining... drained 13 messages
> message 1000 received 2 times!
> message 1994 received 2 times!
> message 1995 received 2 times!
> message 1996 received 2 times!
> message 1997 received 2 times!
> message 1998 received 2 times!
> message 2988 received 2 times!
> message 2989 received 2 times!
> message 2990 received 2 times!
> message 2991 received 2 times!
> message 2992 received 2 times!
> message 2993 received 2 times!
> message 999 received 2 times!
> done checking
> The consumers are careful with client side acknowledgment so there should be
> nothing left for the final drainer.
> Please see the attached script for more details. You may need to play with
> the number of messages or the number of consumers.
> Note that the test script seems to work fine over STOMP. I've only seen
> problems with STOMP+SSL.
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