> I do not know the reasoning behind this requirement. > Many would find it convenient if it wasn't there. But > the gist of the discussion was that relaxing this > requirement after its been along is more trouble than > its worth. Its really not that hard to come up with > some sort of offer.
It is easy to build an offer; it is the potential side effects that may not be desirable. Hopefully any device sending an offer-less INVITE and requiring 100rel also supports UPDATE, forking proxies, and won't cancel the INVITE if it doesn't like the required offer. For instance if a proxy does not support media and wants to return a 181 (or another 1xx potentially known or unknown by UAC), hopefully the UAC won't cancel the INVITE if receives an offer with IP6 .invalid connection address and foo media. _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
