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https://issues.apache.org/jira/browse/DISPATCH-1287?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16793211#comment-16793211
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ASF GitHub Bot commented on DISPATCH-1287:
------------------------------------------

grs commented on pull request #466: DISPATCH-1287: when sender has indicated 
credit is drained...
URL: https://github.com/apache/qpid-dispatch/pull/466
 
 
   … , pending credit can be reset
 
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> router gets confused by clients response to drain and subsequently issue too 
> little credit
> ------------------------------------------------------------------------------------------
>
>                 Key: DISPATCH-1287
>                 URL: https://issues.apache.org/jira/browse/DISPATCH-1287
>             Project: Qpid Dispatch
>          Issue Type: Bug
>    Affects Versions: 1.5.0
>            Reporter: Gordon Sim
>            Priority: Major
>             Fix For: 1.6.0
>
>         Attachments: drainable.py
>
>
> A sender is opened for an address on which there is a receiver. It sends one 
> messages which is accepted. The receiver then detaches and the sender tries 
> to send another message. This second message is released and the router 
> attempts to drain the senders credit.
> The sender responds to the drain request by not sending any further messages 
> but incrementing the delivery_count by the appropriate amount.
> If a receiver attaches on the address again after this point, the router 
> issues credit back to the sender, but only issues link-credit=1.



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