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From Gordon Sim <g...@redhat.com>
Subject Re: Temp queues via Dispatch Router to brokers
Date Mon, 22 Sep 2014 09:31:56 GMT
On 09/19/2014 10:14 PM, Adams, Cory wrote:
> Is there a way for temp queues to be utilized through the Router or do all routes need
to be configured via the initial config file + the management tools?  Another way to ask the
same question might be how can the routers be employed to do RPC messaging without routes
being configured on the Router when the Router process is started?

The dispatch router supports the 'dynamic' flag on source/target for an 
attach. With qpid::messaging you can create a temp response queue by 
creating a receiver for address '#'. Proton messenger supports a similar 
convention, so you can subscribe to e.g. amqp://myhost:5672/#.

If, as suggested in the subject line, the requests are going through 
dispatch router to brokers then the picture may be more complicated. It 
depends on whether the servicing processes are attached directly to the 
broker or to the dispatch router network.

If the services are connected to dispatch router, then they should be 
able to handle the replies as is.

If they are connected directly to the broker(s), then the brokers need 
to recognise the addresses issued by dispatch router to the clients and 
handle the responses by opening connections and links as necessary to 
dispatch router over which the replies can be forwarded. I'm not sure 
whether any broker at present would work with dispatch router this way. 
the qpid c++ broker certainly would not.

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