Yes, and the UAS or it's proxy can reject the request. That is covered.
> -----Original Message----- > From: Paul Kyzivat [mailto:[EMAIL PROTECTED] > Sent: Tuesday, April 17, 2007 07:23 > To: Audet, Francois (SC100:3055) > Cc: Dean Willis; sip@ietf.org > Subject: Re: [Sip] SIPS question: How to prevent plaintext > requests from being delivered to a UA > > > > Francois Audet wrote: > > >> Yes, that's exactly my point. If you're given a SIPS URI, use it. > >> Don't downgrade to SIP. Ever. Not at a proxy, not at a UA, > not at a > >> user. > > > > I think everybody agrees on this. > > > > So we are in agreement. > > Well... > > IMO its pointless to base any decisions on the assumption > that everyone will conform to the above. > > It sounds good until a user with a UA that doesn't support > sips wants to call somebody that he only has a sips URI for. > At that point his choices > are: > - give up > - try the downgraded URI > > If there is *any* chance that downgrading will work then a > lot of users will try it. And even if there is *no* chance of > it working some number of users will try it. And its quite > likely that often the downgrading will be done by *mistake*, > by somebody that does understand there is a difference > between sip and sips. > > And it probably *will* work in a lot of cases, because a lot > of people will want to support both. > > So, you can say that users SHOULD NOT do it, or MUST NOT do > it, but assume that it will be done anyway. > > Paul > _______________________________________________ Sip mailing list https://www1.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
