Re: Review of draft-kuthan-sip-derive-00
Adam Roach <[email protected]>
| Newsgroups | gmane.ietf.sip |
|---|---|
| Message-ID | <[email protected]> |
On 11/20/08 10:19 AM, Hadriel Kaplan wrote: >> -----Original Message----- >> From: [email protected] [mailto:[email protected]] On Behalf Of Adam >> Roach >> >> I think the greatest appeal of an approach like the one in DERIVE, if it >> can be made to work, is that it requires no explicit support on the >> calling party's side. >> > > That's not totally accurate, methinks. It requires support for the dialog-event package on the UAC, We've established that -- "28% and likely to increase" is a good starting point. > and requires the UAC to allow some random far-end UA outside its domain that it does not know about to subscribe to it. This isn't some random far-end UA that the calling party has no reason to trust -- the dialog event package explicitly talks about authentication based on knowledge of the dialog identifiers. > [And it requires the path between the UAC and UAS to not contain b2bua's that change call-id or tag, of course] > Unless they also accommodate DERIVE. That's a known property of B2BUAs: you tend to need to update them whenever you want to do something new. Presumably, if the market asks for it, B2BUAs will address the issue. /a _______________________________________________ Sip mailing list https://www.ietf.org/mailman/listinfo/sip This list is for NEW development of the core SIP Protocol Use [email protected] for questions on current sip Use [email protected] for new developments on the application of sip