On 07/17/2012 11:50 AM, Toralf Lund wrote:
Some more questions loose related to my post on response queues:
1. What's the purpose of qpid::messaging::session::release()? Yeah, it
releases the message, but what precisely does that mean? And how
does it affect the state of the receiver?
It means the message is requeued and becomes available for delivery to
any subscriber again. This may include the same subscriber that just
released it.
2. What would be the point of rejecting a message via
qpid::messaging::session::reject()? I mean, once again, I understand
the concept on a somewhat superficial level, but it's not really
clear to me what difference it makes whether I reject a message, or
just acknowledge it and then just forget about it.
If you have an alternate-exchange defined for the queue then a reject
will cause the message to be re-routed through that (e.g. to a dead
letter queue). If not it just gets dropped and is for practical purposes
no different at present from acknowledging it and dropping it at the client.
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