[rabbitmq-discuss] Java client and Qpid

Mon Jun 17 18:28:59 BST 2013

JFYI, the simple test case I created fails with Qpid 0.20 but works ok with 0..22

Thanks!

On 14 Jun 2013, at 19:04, Dmitry Andrianov <dmitry.andrianov at alertme.com> wrote:

> Simon,
> many thanks for the prompt reply.
> 
> I use Qpid 0.20, Next week will try to create simple test case and run it against both 0.20 and the latest 0.22
> 
> If problem is reproducible - will raise issue on their bugtracker quoting you )
> 
> Thanks 
> 
> 
> On 14 Jun 2013, at 17:52, Simon MacMullen <simon at rabbitmq.com> wrote:
> 
>> On 14/06/13 17:43, Dmitry Andrianov wrote:
>>> Unfortunately I do not know the protocol well enough to understand if
>>> Qpid violates it by sending me a message before sending reply to
>>> basicConsume request or not. Without reading the specs I would assume
>>> that this behaviour is a valid one and it is RabbitMQ Java client
>>> that needs to be more tolerant.
>> 
>> From the spec:
>> 
>>> Section 4.6, Content Synchronisation:
>>> 
>>> In certain cases synchronous request-response methods have an impact
>>> on asynchronous content delivery on the same channel, including:
>>> 
>>> * The Basic.Consume and Basic.Cancel methods, which start and stop
>>> the flow of messages from a message queue.
>> 
>> [Snip a couple of other cases]
>> 
>>> Guidelines for implementers:
>>> 
>>> * The effects of the request-response MUST NOT be visible on the
>>> channel before the response method, and MUST be visible thereafter.
>> 
>> So I'm afraid it's QPid at fault. (Which version are you using? I
>> thought they had abandoned support for AMQP 0-9-1 some time ago.)
>> 
>> Cheers, Simon
>> 
>> -- 
>> Simon MacMullen
>> RabbitMQ, Pivotal
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