RE: Interaction of SIPS with old implementations that weren't really using SIPS (was Re: [Sip] draft-ietf-sip-sips-03.txt)

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

I should have known better not to waste my time answering your
questions when you obviously don't care about the answers. 

I won't make that mistake again. 

> -----Original Message-----
> From: Srivastava, Samir (SC100:8826) 
> Sent: Wednesday, April 25, 2007 15:25
> To: Audet, Francois (SC100:3055)
> Cc: 'sip at ietf.org'
> Subject: RE: Interaction of SIPS with old implementations 
> that weren't really using SIPS (was Re: [Sip] 
> draft-ietf-sip-sips-03.txt)
> 
> >
> >On your first question: If I send you a request using a SIPS 
> URI, and 
> >you accept it even if you don't support SIPS (because you 
> are a buggy 
> >implemenation), you will nevertheless put SIP in the various URIs in 
> >your response, e.g., in the Contact header. You may even muck-up the 
> >From or To. If you send me mid-call requests later, you will most 
> >probably use SIP URIs in From. If I detect something like 
> that, I can 
> >probably figure out something is wrong. Some of this is 
> already covered 
> >in the draft and in RFC 3261.
> 
> If it just doesn't support SIPS, It should just return "416 
> Unsupported URI scheme".
> Very pointed question, why do we want to develop standards 
> for the BUGGY implementation. At the _most_, we can just say 
> in BCP/INFORMATIONAL document that if it behaves like this, 
> then it is buggy implementation. And we don't attempt to fix 
> it in the specification. If we take this route, we might find 
> numerous others BUGGY implementations of other parts of SIP 
> specifications also. I just call them BUGS. And bugs are 
> fixed by their owners during the upgrades/patches etc.
> >
> >On your second question. It's not the protocol that is 
> broken but the 
> >implementation.   
> >
> We should not even attempt to fix the broken implementation 
> via another add-on standards. I don't want to say now as Dean 
> yesterday said season is over for hunting. Keep trying to fix 
> it. Good luck.
> 
> Thx
> Samir
> 


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