RE: SIPit21: BNF future-proofing problem?

Hi,
 
>>Unless someone can show a use-case where the x00-x20
characters would be
>>needed, for backward compability reasons I think
it's better to restrict
>>quoted-string than to extend extension-header.
>  
>
>Certainly you mean 0x00-0x19, right? I'd like to be able
to use spaces
>inside quoted strings.

The ABNF (see below) acutally doesn't allow 0x20 as such.
BUT, you are also allowed to use LWS, which can contain
spaces 

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

TEXT-UTF8-TRIM  =  1*TEXT-UTF8char *(*LWS TEXT-UTF8char)
TEXT-UTF8char   =   %x21-7E / UTF8-NONASCII
UTF8-NONASCII   =  %xC0-DF 1UTF8-CONT
                                    /  %xE0-EF 2UTF8-CONT
                                    /  %xF0-F7 3UTF8-CONT
                                    /  %xF8-Fb 4UTF8-CONT
                                    /  %xFC-FD 5UTF8-CONT
UTF8-CONT       =  %x80-BF


Regards,

Christer

 



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