On 14/03/18 08:40, Cyril Micoud wrote:
Hi everybody,
We are working with Qpid to set up interoperability between 2 systems,
one in Java, the other in C ++.
On the C ++ side, we use Qpid Proton 0.17.0 (not the last update due to
system constraints) to use the AMQP 1.0 standard.
In Java, we started on Qpid JMS 0.30.0 for the simplicity of JMS and
compatibility with 1.0 of AMQP.
In the nominal case, we use a Broker, but we also need point-to-point
access to transfer information from one system to another such as the
broker's address and the queues on which we can exchange.
However, connection and exchange with the broker is simple to configure,
but the point to point in JMS seems compromised (or so we have not yet
find the right documentation).
We are considering the use of Qpid Proton-J 0.26.0 but again, we do not
find much example of implementation ...
What is the best way to use both communication broker and point-to-point?
Anybody can provide us a quick sample of Proton-J usage with and without
broker? or a JMS sample to point-to-point usage?
If by point-to-point you mean one system connects to the other directly,
then the first thing is to decide which direction that connection
happens in. The JMS client, as far as I know, does not let you accept
incoming connections. Therefore it would be easier to have the c++ part
open a listener on a particular port, and have the JMS client simply
connect to that as if it were a broker. That does mean there is some
extra stuff the c++ side needs to do to correctly handle the direct
connections. You can have a look at the broker example to get some
ideas:
https://git1-us-west.apache.org/repos/asf/qpid-proton/repo?p=qpid-proton.git;a=blob;f=examples/cpp/broker.cpp;h=f48fb376f65dbeeed9fae71092168de732b19356;hb=HEAD
However, one other thing to consider, is to use the dispatch router
between the systems. This way the two systems connect out, as if to a
broker, but can send each other messages that are acknowledged
end-to-end with no store-and-forward between them. You can also have the
links propagated if you need to. I think it often makes the overall
system simpler. It depends of course on the reasons and detailed use
cases for the point-to-point communication channel.
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