[Serusers] FW: [Sip-implementors] Whitespace after value in SIP header field

[Jan Janak]

If I remember it correctly this was considered a bug in the specification. 
Unfortunately I cannot check it right now because the bugzilla that keeps 
track of RFC3261 bugs seems to be down:

http://www.softarmor.com/sipwg/

I will check it later when it is back online.

My personal opinion is that a reasonable implementation should be
benevolent and handle such cases even if it is not allowed in the
grammar. The grammar in RFC3261 is known to be ambiguous and contains
bugs.

  Jan.

On 16-11 12:48, Martin Koenig wrote:
> Hello,
> 
> I think the white space is not legal in 3261. Please take a look at the
> message below.
> 
> Best regards,
> Martin
> 
> -----Original Message-----
> From: Attila Sipos [mailto:Attila.Sipos at vegastream.com] 
> Sent: Tuesday, November 16, 2004 12:01 PM
> To: Martin Koenig; sip-implementors at cs.columbia.edu
> Subject: RE: [Sip-implementors] Whitespace after value in SIP header field
> 
> 
> Hi,
> 
> One of the headers in the posting to the SERusers mailing
> list is:
> 
> Max-Forwards: 8 .
> 
> According to RFC3261 Max-Forwards is defined as:
> 
> Max-Forwards  =  "Max-Forwards" HCOLON 1*DIGIT
> 
> and DIGIT (from RFC2234) is:
> 
>         DIGIT       =  "0" / "1" / "2" / "3" / "4" / "5" / "6" /
>                            "7" / "8" / "9"
> 
> So, you can have a space between the colon and the first digit
> but you're not allowed any spaces after or between any digits
> and you're certainly not allowed a '.' character.
> 
> Regards,
> 
> Attila
> 
> Attila Sipos
> Software Engineer
> http://www.vegastream.com/
> 
> 
> 
> > -----Original Message-----
> > From: sip-implementors-bounces at cs.columbia.edu
> > [mailto:sip-implementors-bounces at cs.columbia.edu]On Behalf Of Martin
> > Koenig
> > Sent: 16 November 2004 09:56
> > To: sip-implementors at cs.columbia.edu
> > Subject: [Sip-implementors] Whitespace after value in SIP header field
> > 
> > 
> > Hello,
> > 
> > please check the following posting to the SERusers mailinglist:
> > 
> > http://lists.iptel.org/pipermail/serusers/2004-September/011580.html
> > 
> > What do you think? Is the white space after the header field 
> > value according
> > to 3261 or not?
> > 
> > Best regards,
> > Martin
> > 
> > _______________________________________________
> > Sip-implementors mailing list
> > Sip-implementors at cs.columbia.edu
> > http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
> > 
> 
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