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https://issues.apache.org/jira/browse/PROTON-795?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Justin Ross updated PROTON-795:
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Fix Version/s: Future
> add support for 'echo' on Flow frames/events
> --------------------------------------------
>
> Key: PROTON-795
> URL: https://issues.apache.org/jira/browse/PROTON-795
> Project: Qpid Proton
> Issue Type: Improvement
> Components: proton-c, proton-j
> Affects Versions: 0.8
> Reporter: Robbie Gemmell
> Fix For: Future
>
>
> Flow frames have an 'echo' field [1], used to request peers send their
> updated state. This would be useful to e.g attempt stopping a link without
> 'drain', or requesting a Flow response is sent when also 'drain'ing (since
> Proton does not send one if all the credit has already been used when the
> drain is actioned).
> Currently this field is not inspected by proton itself, or exposed in any way
> that an application could inspect this (or it must be said, set it) itself,
> so it isnt currently possible to honour an echo request from a [non-Proton]
> peer.
> [1]
> http://docs.oasis-open.org/amqp/core/v1.0/os/amqp-core-transport-v1.0-os.html#type-flow
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