Subject: RE: [Sip] RE: WGLC for draft-willis-sip-path-05: Require:path needed?

From: [email-masked]
Date: Fri, 10 May 2002 12:55:09 +0300

> -----Original Message-----
> From: Honeisen Bernhard (NET/Helsinki) 
> Sent: Wednesday, May 08, 2002 4:11 PM
> To: Khartabil Hisham (NMP/Helsinki); [email-masked]';
> [email-masked]'
> Cc: [email-masked]'
> Subject: RE: [Sip] RE: WGLC for draft-willis-sip-path-05: Require:path
> needed?

> > > Solution:
> > > 
> > > -> after a 420 the UA tries to send the request without
> > > Supported:path.
> > > 
> > > -> Proxies MUST NOT insert a Require:path, if no Supported:path
> > > was present in the request.
> > 
> > 
> > 
> > Are you suggesting that a proxy must remember requests that 
> > it processed earlier?
> 
> No, not at all. Why do you think it has to remember?
> 
> > First you mention that a proxy can insert a path-header 
> > without a supported-header (or that is what it sounded like 
> > at least).
> 
> If it does, the registrar will ignore any Path header, as 
> no Supported:path is present in the REGISTER request in
> question. Such behaviour would allow easier implementation
> of proxies. (But I don't argue, if people think it's better,
> if proxies must not insert any Path stuff, if there is
> no Supported header in the REGISTER request in question.)
> My proposal is just, that the proxy just MUST NOT insert
> any Require:path, if Supported:path was not present.
> 

Ok, now I understand what your saying ;) But what is the point (besides ease of implementation) of allowing proxies to add a path-header for a request (REGISTER) that does not contain a "supported: path" header if the registrar is going to ignore them anyway? The SIP message size gets bigger and bigger for no reason.

Regards,
Hisham

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