RE: EPP PUSH: Session Setup Semantics

["Hollenbeck, Scott" <shollenbeck@verisign.com>]

> Suppose both the server and the client agree on supporting 
> EPP PUSH in this
> session, there are two possible semantics:
> a. Push-only semantics. The session can only be used for server-pushed
> messages. The client cannot use <poll> in this session to 
> retrieve messages
> from the server.
> b. Mixed semantics. Both server-push and client-poll are allowed.
> In both cases, I think it is reasonable to assume that other 
> EPP commands
> and responses are allowed.
> 
> Which semantics should we pick, (a) or (b)? 
> Is this a registry policy issue or a standardization issue?

I believe that (b) is the proper approach.  Polling is a "standard" protocol
feature that you can't just eliminate, so I see it as a standardization (and
thus interoperability) issue.

-Scott-