The broker will have little idea what it is talking to, they all speak
AMQP 1.0 to each other. The only questions are what you are trying to
do, what the broker requires to be asked to do that, and how you
configure your client to get that.
I'm guessing this may be an ActiveMQ broker from the behaviour. If so,
try adding topic:// as a prefix to the address string to have the
broker understand you want to subscribe to the topic of the following
name, rather than a queue with that name, which is what it assumes
unless asked otherwise.
Robbie
On Thu, 1 Jul 2021 at 10:05, rahul.sin...@morganstanley.com
<rahul.sin...@morganstanley.com> wrote:
>
> Hello,
> The broker does not seem to have much understanding of the C++ QPID Messaging
> API and is more used to the Java version. All it is suggesting to ensure that
> we pass the topic in the format "ID.ExampleTopic". However, looking at the
> AMQP frames from Broker, it seems to misinterpret that topic for a queue,
> hence there is an unauthorize error reported. ( " is not authorized to
> create: queue://ID.ExampleTopic" )
> From the QPID API usage perspective, do I need to invoke something else to
> make the topic usage clear. I also experimented with creating a Sender with
> same topic name but I get the same error.
>
> Best Regards,
> Rahul
>
> -----Original Message-----
> From: Gordon Sim <g...@redhat.com>
> Sent: 30 June 2021 10:01
> To: users@qpid.apache.org
> Subject: Re: QPID C++ Subscribing to a topic
>
> On Wed, Jun 30, 2021 at 9:40 AM rahul.sin...@morganstanley.com
> <rahul.sin...@morganstanley.com> wrote:
> > After being able to establish the connection with the broker at other end,
> > we try to subscribe to a given topic. For this, we create the receiver with
> > string mapping to the topic. ( Id.ExampleTopic ), where Id is the
> > identifier broker assigned to us and ExampleTopic is the topic.
> > We have already sought clarification with the broker about this issue,
> > however, we wanted to ensure if the AMQP APIs are being used correctly for
> > this and if we need to somehow communicate that we are subscribing for a
> > topic. (for example, do we need to add some qualifier to the passed string
> > etc.
> >
> > qpid::messaging::Connection conn(url, options); conn.open();
> >
> > qpid::messaging::Session session = conn.createSession();
> >
> > qpid::messaging::Receiver topic_receiver =
> > session.createReceiver("Code.ExampleTopic");
>
>
> If you are using AMQP 1.0, and the broker treats the creation of a receiver
> with that pattern as a subscription on a topic, then the client does not
> require any further configuration.
>
>
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