Subject: RE: [Sip] Response code for unsupported SIP version

From: Jonathan Rosenberg <[email-masked]>
Date: Fri, 3 Aug 2001 15:52:32 -0400

> -----Original Message-----
> From: Christer Holmberg [mailto:[email-masked]]
> Sent: Thursday, July 26, 2001 9:00 AM
> To: [email-masked]
> Subject: [Sip] Response code for unsupported SIP version
> 
> 
> 
> Hi,
> 
> Just a small detail/cosmetic/clarification question:

I think this goes down as the most minor nit ever raised against the spec.

> 
> The 505 SIP Version not supported, which belongs to the Server Error
> category, response code is used when a request with a 
> non-supported SIP
> version (other than SIP/2.0, that is) is received.
> 
> The ABNF grammar (bis-04, page 27), however, allows ONLY "SIP/2.0". If
> something else is received, isn't it then, from a grammar 
> point of view,
> a Syntax Error (ie a 4xx response code should be used)?
> 
> So, if we want to use 505, shouldn't the grammar look something like:
> 
> SIP-Version = "SIP/2.0" | other-version
> other-version = "SIP/" 1*DIGIT "." 1*DIGIT
> 
> ...or something similar.

Consider 505 a "hope we will never use placeholder". Feel free to send a 4xx
if you get a different version than 2.0.

-Jonathan R.

---
Jonathan D. Rosenberg, Ph.D.                72 Eagle Rock Ave.
Chief Scientist                             First Floor
dynamicsoft                                 East Hanover, NJ 07936
[email-masked]                     FAX:   (973) 952-5050
http://www.jdrosen.net                      PHONE: (973) 952-5000
http://www.dynamicsoft.com

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