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From "Jakub Scholz (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (QPIDJMS-110) Incorrect error handling when the sender.send(...) call / message transfer causes an error
Date Wed, 16 Sep 2015 09:16:45 GMT

    [ https://issues.apache.org/jira/browse/QPIDJMS-110?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14747193#comment-14747193

Jakub Scholz commented on QPIDJMS-110:

Similar scenario is when the queue where the transfer is targeted is full. In that case, the
broker directly closes the connection, resulting in the same situation in the JMS client -
the synchronous send gets stuck. But I guess this might also happen purely as a race condition,
when the detach / connection close is triggered independently on the transfer, only with a
wrong timing and cause the send to be stuck.

> Incorrect error handling when the sender.send(...) call / message transfer causes an
> ------------------------------------------------------------------------------------------
>                 Key: QPIDJMS-110
>                 URL: https://issues.apache.org/jira/browse/QPIDJMS-110
>             Project: Qpid JMS
>          Issue Type: Bug
>          Components: qpid-jms-client
>            Reporter: Jakub Scholz
> It seems to me that the error handling doesn't work properly when sending a message triggers
an error (i.e. the sender.send(...) call, not creating sender). 
> On the C++ broker, it is easy to configure the access control to allow message producers
to send messages to a certain exchange (topic) only with some particular subjects / routing
keys. When the subject / routing key is wrong, the C++ broker will raise "unathorized access"
error and detach the link.
> I was running this scenario from the Qpid JMS client and it seems that it doesn't handle
the error well:
> 1) Connect with the JMS client to the C++ broker
> 2) Open a sender to an exchange on the broker (this has to be allowed in the ACLs on
the broker)
> 3) Try to send message with subject (i.e. JMSType) which is not allowed in broker ACLs
> 4) The broker detaches the link and the Proton library in the client seems to handle
it, but the client doesn't seem to raise any exception to the outside.
> 2015-09-15 17:48:36 +0200 TRACE org.apache.qpid.jms.provider.amqp.FRAMES - RECV: Detach{handle=0,
closed=true, error=Error{condition=amqp:unauthorized-access, description='user1@QPID1234 cannot
publish to broadcast with routing-key bad.routing.key (/builddir/build/BUILD/qpid-cpp-0.34/src/qpid/broker/amqp/Authorise.cpp:118)',
> 2015-09-15 17:48:36 +0200 TRACE org.apache.qpid.jms.provider.amqp.AmqpProvider - New
Proton Event: LINK_FLOW
> 2015-09-15 17:48:36 +0200 TRACE org.apache.qpid.jms.provider.amqp.AmqpProvider - New
> 2015-09-15 17:48:36 +0200 INFO org.apache.qpid.jms.provider.amqp.AmqpAbstractResource
- Resource JmsProducerInfo {producerId = ID:7W0192-58645-1442332115394-0:1:1:1, destination
= broadcast} was remotely closed
> 2015-09-15 17:48:36 +0200 TRACE org.apache.qpid.jms.provider.amqp.AmqpProvider - New
> 2015-09-15 17:48:36 +0200 INFO org.apache.qpid.jms.JmsSession - A JMS resource has been
remotely closed: JmsProducerInfo {producerId = ID:7W0192-58645-1442332115394-0:1:1:1, destination
= broadcast}
> 2015-09-15 17:48:36 +0200 TRACE org.apache.qpid.jms.provider.amqp.FRAMES - SENT: Detach{handle=0,
closed=true, error=null}
> When sending messages asynchronously in a loop, the send(...) call will finish and few
"sent" message later it will throw at least "javax.jms.JMSException: send not allowed after
the sender is closed." exception. It doesn't contain the original error, but at least it is
clear that something went wrong. So I think that is quite OK.
> But when sending messages synchronously, it seems to get stuck in the send(...) call
and never return, although the underlying session is already gone. I would expect that the
send(...) call returns and either throws some exception directly or through the Exception

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