Integration of BIDI into the protocol
james.mitchell at ausregistry.com.au
Tue Sep 1 05:27:49 CEST 2009
I believe I missed the discussion on inter-label BIDI testing, and am happy to drop that approach; I merely stated the last one because it seems that registries have no choice, disallow or have doubts as to if it would be looked up.
I am happy if the WG believes the first approach clarifies the registration protocol for left-to-right labels in right-to-left zones.
> -----Original Message-----
> From: Vint Cerf [mailto:vint at google.com]
> Sent: Tuesday, 1 September 2009 12:58 PM
> To: James Mitchell
> Cc: Harald Alvestrand; idna-update at alvestrand.no
> Subject: Re: Integration of BIDI into the protocol
> I think your first formulation is the more general. You will recall
> that we explicitly chose not to introduce inter-label BIDI testing.
> On Aug 31, 2009, at 9:33 PM, James Mitchell wrote:
> >>> As a registry, should I allow registration of the name 123abc.RTL?
> >> My recommendation is that you should (as a registry) establish policy
> >> that says "it is not allowed". The protocol does not require you to
> >> do so.
> >>> As an application, should I lookup the name 123abc.RTL?
> >> The protocol does not say that you can't. For the obvious reasons, I
> >> think it's a legitimate implementor decision to decide not to.
> > I was of the assumption that the lookup protocol was no more
> > restrictive than the registration protocol.
> > I propose that one of the following changes is made to draft-ietf-
> > idnabis-protocol-14. The first to clarify that registries are
> > expected to establish policy for this specific issue (or potentially
> > be suprised if they do not), and the second to prevent such labels
> > entirely. I am leaning towards the latter only because the protocol
> > states such names SHOULD be rejected in lookup.
> > 184.108.40.206. Labels Containing Characters Written Right to Left
> > If the proposed label contains any characters that are written from
> > right to left it MUST meet the BIDI criteria [IDNA2008-BIDI].
> > Note that a label containing no characters written from right to
> > left
> > may fail to meet the BIDI criteria when in a name having at least
> > one
> > label containing right to left characters. It is expected that
> > registries establish policy for the registration of such labels.
> > or
> > If the proposed label, or the name in which it belongs, contains any
> > characters that are written from right to left then the proposed
> > label
> > MUST meet the BIDI criteria.
> > I welcome any updates to the wording of these changes.
> > James
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