On Dec 17, 2006, at 9:58 AM, Nathan Mittler wrote:
Hey guys,
I was just looking at the stomp transport and noticed what appears
to be an
undocumented extension to stomp adding a header for subscription ID
(literally the string "id" on the wire) to the subscribe and
unsubscribe
frames. I have just a few questions:
Yep, this is the subscription id in activemq. It is added, as well,
it might be useful :-)
1) Is this equivalent to a consumer id? ... meaning that the client
application can use this value to subscribe multiple times to the same
destination through the same connection?
I cannot think of any way to accomplish this in the stomp connector,
but in theory, yes.
2) Is there any reason that not providing this header might cause the
4.1broker to throw an exception on an unsubscribe, but not
4.0.2?
It shouldn't even be used, actually.
3) Is this header documented anywhere? I did not see it here
http://www.activemq.org/site/stomp.html or here
http://stomp.codehaus.org/Protocol
Nope, is there for informational purposes if you are looking at JMX,
basically.
-Brian
