Subscription with exclusive:true and auto-delete:true should not redeliver
messages
-----------------------------------------------------------------------------------
Key: APLO-86
URL: https://issues.apache.org/jira/browse/APLO-86
Project: ActiveMQ Apollo
Issue Type: Bug
Reporter: Lionel Cons
The exclusive and auto-delete subscription options can be combined to create a
private reply queue.
The current Apollo snapshot does not seem to always delete unconsumed messages,
allowing a rogue client to consume them.
My test scenario:
- c1 subscribes to /queue/foo with exclusive:true and auto-delete:true and
ack:client
- c1 sends messages with the appropriate reply-to header, expecting replies to
go to /queue/foo
- (rogue) c2 subscribes to /queue/foo with the intent to steal messages, it
does not get any because of exclusive:true
- c1 receives and acks messages and then decides to quit
- there are not yet delivered or not yet acked messages in the queue
- c1 unsubscribes and disconnects
- the broker delivers the pending messages to c2 before/while deleting the
queue
IMHO, the broker should not deliver messages to c2 in this situation.
The best solution is probably to forbid subscribing to a queue that has a
subscription with both exclusive:true and auto-delete:true.
--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira
