Need alternative to pn_messenger

[fquinner]

The pn_messenger interface in Qpid Procon has been marked as deprecated. We need to consider alternatives. I have kicked off a conversation on the qpid proton mailing list to discuss - leaving this open to implement its findings:

http://qpid.2158936.n2.nabble.com/Alternatives-to-pn-messenger-QPID-Proton-C-td7662766.html

[btorpey]

Just a comment from the peanut gallery -- but why not abandon qpid in favor of something like, say, 0mq?

The performance of qpid is quite awful, and it doesn't appear to have much in the way of "legs" -- at least as far as the audience for OpenMAMA is concerned.

By contrast, 0mq is relatively mature, stable, and at least has the potential to perform much better.

(I'm aware of the 0mq bridge that Frank has done, and it looks quite promising -- although I'm thinking it could use a little love, which it would presumably get if it were officially adopted by the OpenMAMA project).

[fquinner]

If we stick with qpid proton, we should move messenger API to:

https://qpid.apache.org/releases/qpid-proton-0.30.0/proton/c/api/group__proactor.html