Re: [Sip] Question regarding conflicting grammar for IPV6 SIP URI andRFC 3986

[Hadriel Kaplan <HKaplan at acmepacket.com>]

> -----Original Message-----
> From: sip-bounces at ietf.org [mailto:sip-bounces at ietf.org] On Behalf Of
> Brett Tate
> Sent: Thursday, December 18, 2008 6:26 PM
> To: Vijay K. Gurbani; SIP at ietf.org
> Subject: Re: [Sip] Question regarding conflicting grammar for IPV6 SIP URI
> andRFC 3986
>
> Intentional or not, the sip-uri (excluding IPv6reference) appears to not
> violate extending rfc2396's absoluteURI because the definition was a
> structured subset of opaque_part.  However the introduction of brackets
> to enclose an IPv6 address causes the sip-uri to no longer be a valid
> absoluteURI (rfc2396) or absolute-URI (rfc3986).
>
> I'm currently not sure if a fix is really needed or how best to correct
> it.  Escaping the brackets might work; however that might cause more
> headaches.

Section 19.1.2 of 3261:
   Note that character escaping is not allowed in the host component of
   a SIP or SIPS URI (the % character is not valid in its expansion).

-hadriel

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