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From "Ted Ross (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DISPATCH-744) Reject unsettled deliveries to multicast addresses by default
Date Thu, 13 Apr 2017 20:26:41 GMT
Ted Ross created DISPATCH-744:
---------------------------------

             Summary: Reject unsettled deliveries to multicast addresses by default
                 Key: DISPATCH-744
                 URL: https://issues.apache.org/jira/browse/DISPATCH-744
             Project: Qpid Dispatch
          Issue Type: Improvement
          Components: Router Node
            Reporter: Ted Ross
            Assignee: Ted Ross
             Fix For: 1.0.0


This change is intended to address a behavior of the router that might be considered misleading.
When messages are delivered to an address that has a multicast distribution, delivery disposition
and settlement cannot be tracked because there may be multiple consumers.  Because of this,
if a delivery is unsettled, the first router will settle the message unilaterally and forward
it on in a pre-settled state.  The result is that the sender may receive a settled-and-accepted
disposition for a message that was eventually dropped without being delivered to a consumer.
The solution is to reject deliveries to multicast addresses that are not already pre-settled
by the sender.  The rejection shall carry the text: "Deliveries to a multicast address must
be pre-settled".
This behavior shall be the new default behavior.  A configuration flag shall be provided to
restore the original behavior.



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