Is it possible to do a streaming RPC call using WAMP?

Question

I would like to use the WAMP protocol for RPC and Pub/Sub using websockets. In particular, I am interested in using crossbar.io as a WAMP server.

I read through the spec for WAMP and it was not clear whether it's possible to stream data as part of an RPC call from the client. There seems to be support for streaming a result from the server though.

edit: I want to clarify that I am referring to what one might call a progressive request as opposed to simply a server acting as a client.

Answer 1

Today (2015/05), WAMP has progressive results, but not progressive requests.

Development of WAMP was (well, still is) driven by use cases. We had a use case for progressive results, but not progressive requests. Also, it's not fully immediate how progressive requests should work.

Answer 2

Server and client are equals in WAMP. A client in the classical sense (e.g. a browser) can offer a procedure for the server in the classical sense to call, and this can use progressive call results.