Ken Giusti created DISPATCH-231:
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Summary: Router should not issue credit for unavailable targets
Key: DISPATCH-231
URL: https://issues.apache.org/jira/browse/DISPATCH-231
Project: Qpid Dispatch
Issue Type: Bug
Components: Router Node
Affects Versions: 0.5
Reporter: Ken Giusti
Assignee: Ted Ross
Fix For: 0.6
When a client creates a sending link to a target, the router accepts the link
on behalf of the target, and issues credit.
This happens even if the target is unknown (eg. no consumers exist).
In this case, the client will send a bunch of messages that simply stall or are
released.
As an alternative, the router should only issue credit if the target is
available.
Specifically:
1 - on attach, do not issue credit if the target is not available
2 - if the target goes away, stop issuing additional credit
#2 can result in in-flight messages being left in limbo. In this case, it is
acceptable to drop those messages that have been sent pre-settled, and release
those messages sent unsettled. Ideally, the router would hold on to these
messages for a short time (TTL?) and re-send if the target becomes available in
that time.
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