Alex Rudyy created QPID-8223:
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Summary: [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-7.0.6, qpid-java-broker-7.0.5,
qpid-java-broker-7.0.4, qpid-java-broker-7.0.1, qpid-java-broker-7.0.0,
qpid-java-broker-7.0.2, qpid-java-broker-7.0.3
Reporter: Alex Rudyy
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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