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

[Jiri Kuthan]

The BNF in RFC3261 is actually ambiguous. As you may see, 
the extension header spec which matches Max-forwads too is
more explicit about use of LWS. 

header-name       =  token
header-value      =  *(TEXT-UTF8char / UTF8-CONT / LWS)

I think this is a pefect case against a UAS for the SIP Forum testing
suite. (Nils on cc)

-jiri
At 12:48 PM 11/16/2004, 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
>> 

--
Jiri Kuthan            http://iptel.org/~jiri/