Justin Ross created PROTON-1581:
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Summary: Expose the "aborted" flag for transferred deliveries
Key: PROTON-1581
URL: https://issues.apache.org/jira/browse/PROTON-1581
Project: Qpid Proton
Issue Type: New Feature
Components: proton-c
Reporter: Ted Ross
Assignee: Alan Conway
Fix For: proton-c-0.18.0
As we develop support for message streaming in Qpid Dispatch Router (i.e.
frames for large multi-frame messages are forwarded to destinations as they
arrive, before the complete message is received), there is a need to handle the
case where a received message is never completed.
The AMQP protocol has a provision for this in the "aborted" flag in the
transfer performative. If the router is in the process of streaming a large
message from sender to receiver and the sender drops before completing the
delivery, the router can send a transfer to the downstream receivers with the
"aborted" flag set. This would indicate that the message should not be
processed and would not cause any framing errors on the link.
Proton does not currently expose this capability in its API (There is a
pn_link_abort in the C header file, but it is commented out and not
implemented).
In order to properly handle the failure cases for message streaming, this
feature must be usable in Proton.
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