CORBA35 — Negotiation Session message is unwieldy

The Negotiate Session message is unwieldy in that if it is used to send
service contexts, there are no general ways to govern its use other than
by special rules, all of which special cases are not accounted for in the
specification.

For example, when do you sent Bidirectional service contexts as ooposed to
firewall contexts? Can you send transaction contexts? Codesets? Codebase?
CSIv2? Can you send BiDir service contexts while firewall contexts are
being processed?