[rabbitmq-discuss] Problems while trying interoperability

Thu Aug 16 13:04:24 BST 2007

On 16/08/07, Alexis Richardson <alexis.richardson at cohesiveft.com> wrote:
> Rob,
>
> Anything to minimise Qpid / RabbitMQ deltas on how the spec is
> implemented would be great - thanks.  We'll do the same if the case
> arises.  And thanks very much for being on this group so we can work
> with your team to ensure interop is real and not vapour.
>
> Tanmay,
>
> As Matthias pointed out, pending a patch of the type Rob mentions, you
> can also do this as an interop workaround:
>
> 1) Qpid client -> RabbitMQ broker --- run RabbitMQ in "lax" mode (ie
> we reduce our spec implementation surface for interop).
> 2) RabbitMQ client -> QPid server --- do not do the accessRequest and
> use a hard-coded ticket# instead
>
> For (1) lax mode is enabled by default so please *do* send us your logs.
>
> Cheers
>
> alexis

For (1) you may also want to set java system property STRICT_AMQP=true
this will disabled all the Qpid JMS extensions to the AMQP protocol.
Disabling things such as selectors and queue browsing that AMQP 0_8
does not support, if you attempt to do something that uses extended
behaviour it will log a warning. Alternatively STRICT_AMQP_FATAL=true
will cause your app to System.exit in addition.

>
>
>
>
>
> On 8/16/07, Robert Godfrey <rob.j.godfrey at gmail.com> wrote:
> > Hi, at some point I added implementations of access ticket to the Qpid
> > client to allow us to interoperate with the RabbitMQ broker... if the code
> > has disappeared I can put it back in.
> >
> > At present Qpid does not implement the access ticket / realm parts of AMQP.
> >
> > Hope this helps,
> > Rob
> >
> >
> > On 16/08/07, Matthias Radestock <matthias at lshift.net> wrote:
> > > Tanmay,
> > >
> > > Goel, Tanmay wrote:
> > > > when I try to run a RabbitMQ client (attached,
> > > > SimpleProducer.java) against Qpid broker (with the default configuration
> > > > provided when I first downloaded it, no change), I get the following
> > > > exception. The exception is thrown on this like of code: *
> > > >
> > > > *int ticket = ch.accessRequest("/test");*
> > > >
> > > > *Intuitively, this method is not provided by the Qpid broker. Is it?*
> > >
> > > You are probably right and this method is indeed unimplemented in Qpid.
> > > It certainly wasn't when we ran the tests ~6 months ago, as noted in
> > > http://www.rabbitmq.com/interoperability.html
> > >
> > > You can probably just skip that request and use a ticket number of 0,
> > > with RabbitMQ's lax_mode enabled (which it is by default - see above
> > page).
> > >
> > > > *Also, there is no "client-name" passed as a parameter at the time of
> > > > establishing connection to the RabbitMQ connection constructor but is
> > > > passed to the Qpid connection constructor. If and how will this effect?*
> > >
> > > I have no idea what the "client-name" value is for. Perhaps the QPid
> > > client passes that value as part of the peer properties exchanged during
> > > connection negotiation, in which case it's informational only, i.e. it
> > > shouldn't affect the behaviour.
> > >
> > > > *Alternatively, when I tried to run a Qpid client against a RabbitMQ
> > > > broker (again, with the default settings, virtual hosts, etc). I got the
> > > > following error message at the first line of code: _connection = new
> > > > AMQConnection("localhost", 5672, "guest", "guest", "clientid",
> > "/data");*
> > >
> > > What do the RabbitMQ server logs (stdout, rabbit.log, rabbit-sasl.log)
> > say?
> > >
> > > What version of QPid are you running? The M1 release?
> > >
> > > Regards,
> > >
> > > Matthias.
> > >
> > > _______________________________________________
> > > rabbitmq-discuss mailing list
> > > rabbitmq-discuss at lists.rabbitmq.com
> > >
> > http://lists.rabbitmq.com/cgi-bin/mailman/listinfo/rabbitmq-discuss
> > >
> >
> >
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> >
> >
>
>
> --
> Alexis Richardson
> +44 20 7617 7339 (UK)
> +44 77 9865 2911 (cell)
> +1 650 206 2517 (US)
>
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-- 
Martin Ritchie