RE: [Sip] draft-ietf-sip-sips-03.txt: Closing of Opened issues

["Francois Audet" <audet at nortel.com>]

Yeah, sorry, I missed that thread.

The current draft basically says that it is NOT legal for a proxy
to "upgrade" or "downgrade" from sip to sips or vice versa. It MUST
keep the same scheme.

So, it is "not true" and therefore not badly broken. In fact, that's
the whole point of making that change in the draft: fixing sips so it is
not broken.

The Double Record-Route procedures are nevertheless described in the
draft because people wanted to see "what would happen with theoretical
legacy 3261 implementations that supported sips as per 3261, but not
according to the new draft". 

So: to summarize, with the current draft, the double record-route
procedures
are never used.

> -----Original Message-----
> From: Juha Heinanen [mailto:jh at tutpro.com] 
> Sent: Wednesday, April 25, 2007 23:00
> To: Audet, Francois (SC100:3055)
> Cc: sip at ietf.org; Alan Johnston; Keith Drage; Peterson, Jon; 
> Dean Willis
> Subject: [Sip] draft-ietf-sip-sips-03.txt: Closing of Opened issues
> 
> Francois Audet writes:
> 
>  > I looks like we are about ready to close on the 2 
> remaining opened  > issues in  Appendix C of draft-ietf-sip-sips-03.
> 
> how about the r-r tls transport issue that was raised a 
> couple of days ago?  someone said that according to your i-d, 
> my proxy that uses tls with then next proxy, has to upgrade 
> sip: to sips: over that link.  
> 
> if that is true, your draft is badly broken, because my proxy 
> cannot have any knowledge that sips: is supported on the 
> following hops.  if that is not true, tell me what kind of 
> r-r(s) my proxy needs to in that case insert.
> 
> -- juha
> 


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