Re: [tram] Updated IANA sections in STUNbis (RFC 8489)

Harald Alvestrand <harald@alvestrand.no> Mon, 11 November 2019 14:12 UTC

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To: Marc Petit-Huguenin <petithug@acm.org>, "tram@ietf.org" <tram@ietf.org>
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From: Harald Alvestrand <harald@alvestrand.no>
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Date: Mon, 11 Nov 2019 15:12:45 +0100
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Subject: Re: [tram] Updated IANA sections in STUNbis (RFC 8489)
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Den 10.11.2019 15:56, skrev Marc Petit-Huguenin:
> I have been asked by Magnus to send the proposed changed to the IANA section to the WG and to Harald for review.  The full new content of the 3 sections are copied below:

Great to see this!

Nits:
- RFC 5226 is obsoleted by RFC 8226
- The term "Designated Expert" is now deprecated; please use "Expert
Review" (8226 section 4.5).

Those are the ones I found on reading. Also, there's one question below.
Apart from that, I'm happy.

> 
> 
> "18.2.  STUN Methods Registry
> 
>     A STUN method is a hex number in the range 0x000 - 0xFFF.  The
>     encoding of STUN method into a STUN message is described in
>     Section 5.
> 
>     STUN methods in the range 0x000 - 0x7FF are assigned by IETF Review
>     [RFC5226].  STUN methods in the range 0x800 - 0xFFF are assigned by
>     Designated Expert [RFC5226].  The responsibility of the expert is to
>     verify that the selected codepoint(s) are not in use and that the
>     request is not for an abnormally large number of codepoints.
>     Technical review of the extension itself is outside the scope of the
>     designated expert responsibility.
> 
>     IANA has updated the name for method 0x002 as described below as well
>     as updated the reference from RFC 5389 to RFC 8489 for the following
>     STUN methods:
> 
>     0x000: Reserved
>     0x001: Binding
>     0x002: Reserved; was SharedSecret prior to [RFC5389]"
> 
> "18.3.  STUN Attributes Registry
> 
>     A STUN Attribute type is a hex number in the range 0x0000 - 0xFFFF.
>     STUN attribute types in the range 0x0000 - 0x7FFF are considered
>     comprehension-required; STUN attribute types in the range 0x8000 -
>     0xFFFF are considered comprehension-optional.  A STUN agent handles
>     unknown comprehension-required and comprehension-optional attributes
>     differently.
> 
>     STUN Attribute types in the first half of the comprehension-required
>     range (0x0000 - 0x3FFF) and in the first half of the comprehension-
>     optional range (0x8000 - 0xBFFF) are assigned by IETF Review
>     [RFC5226].  STUN Attribute types in the second half of the
>     comprehension-required range (0x4000 - 0x7FFF) and in the second half
>     of the comprehension-optional range (0xC000 - 0xFFFF) are assigned by
>     Designated Expert [RFC5226].  The responsibility of the expert is to
>     verify that the selected codepoint(s) are not in use, and that the
>     request is not for an abnormally large number of codepoints.
>     Technical review of the extension itself is outside the scope of the
>     designated expert responsibility."

Are there no attributes with an updated reference in this registry?

> 
> "18.4.  STUN Error Codes Registry
> 
>     A STUN error code is a number in the range 0 - 699.  STUN error codes
>     are accompanied by a textual reason phrase in UTF-8 [RFC3629] that is
>     intended only for human consumption and can be anything appropriate;
>     this document proposes only suggested values.
> 
>     STUN error codes are consistent in codepoint assignments and
>     semantics with SIP [RFC3261] and HTTP [RFC2616].
> 
>     New STUN error codes are assigned based on IETF Review [RFC5226].
>     The specification must carefully consider how clients that do not
>     understand this error code will process it before granting the
>     request.  See the rules in Section 6.3.4.
> 
>    IANA has updated the reference from RFC 5389 to RFC 8489 for the
>    error codes defined in Section 14.8.
> 
>    IANA has changed the name of the 401 error code from "Unauthorized"
>    to "Unauthenticated"."
>