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From "Alex Rudyy (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (QPID-8223) [Broker-J] [AMQP 1.0] Broker can stop delivering messages when sending link delivery-count value exceeds Integer.MAX_VALUE, wraps around and turns negative
Date Sun, 05 Aug 2018 21:33:00 GMT

     [ https://issues.apache.org/jira/browse/QPID-8223?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Alex Rudyy updated QPID-8223:
-----------------------------
    Status: Reviewable  (was: In Progress)

> [Broker-J] [AMQP 1.0] Broker can stop delivering messages when sending link delivery-count
value exceeds Integer.MAX_VALUE, wraps around and turns negative
> -----------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: QPID-8223
>                 URL: https://issues.apache.org/jira/browse/QPID-8223
>             Project: Qpid
>          Issue Type: Bug
>          Components: Broker-J
>    Affects Versions: qpid-java-broker-7.0.3, qpid-java-broker-7.0.2, qpid-java-broker-7.0.0,
qpid-java-broker-7.0.1, qpid-java-broker-7.0.4, qpid-java-broker-7.0.5, qpid-java-broker-7.0.6
>            Reporter: Alex Rudyy
>            Assignee: Alex Rudyy
>            Priority: Major
>             Fix For: qpid-java-broker-7.1.0, qpid-java-broker-7.0.7
>
>
> The value of {{delivery-count}}  is conceptually unbounded but it is encoded as a 32-bit
> integer that wraps around and compares according to RFC-1982 serial number arithmetic.
Broker-J does not handle the case of "negative credit" on a link correctly. For example, if
deliver count is {{-1}} and credit is {{1}}, then limit would calculate as {{0}} and broker
would stop sending messages



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