Lorenz Quack created QPID-7739:
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Summary: [Java Broker] In AMQP 1.0 fix handling of channel Id >
2^15
Key: QPID-7739
URL: https://issues.apache.org/jira/browse/QPID-7739
Project: Qpid
Issue Type: Bug
Components: Java Broker
Reporter: Lorenz Quack
Fix For: qpid-java-broker-7.0.0
In AMQP 1.0 the channel ID is an Unsigned Short, i.e. 0 <= x < 2^16
However in the amqp 1.0 plugin the channel is modeled as a java short which is
signed and thus in the range -2^15 <= x < 2^15.
This causes some problems if the channel id exceeds 2^15. Some issues are minor
like the error statement in {{AMQPConnection_1_0Impl#getSession}} taking on a
negative value but some will be more unfortunate like the
{{ArrayIndexOutOfBoundsException}} earlier in the same method (will fail the
session Begin and close the connection).
There are several possible solutions:
* handle the unsigned short correctly (either as UnsignedShort or as int)
* enforce a max-channel of 2^15 - 1 on connection Open
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