RE: draft-chen-rdns-urn-05 (Re: two-week review: registering formal "rdns" NID)

"Ing-Wher (Helen) Chen" <ichen@kuatrotech.com> Fri, 18 March 2016 21:21 UTC

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From: "Ing-Wher (Helen) Chen" <ichen@kuatrotech.com>
To: "Dale R. Worley" <worley@ariadne.com>
Subject: RE: draft-chen-rdns-urn-05 (Re: two-week review: registering formal "rdns" NID)
Thread-Topic: draft-chen-rdns-urn-05 (Re: two-week review: registering formal "rdns" NID)
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Date: Fri, 18 Mar 2016 21:21:06 +0000
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Hi Dale,

Thanks very much for the corrections.  I updated to version -06.

URL:            https://www.ietf.org/internet-drafts/draft-chen-rdns-urn-06.txt
Status:         https://datatracker.ietf.org/doc/draft-chen-rdns-urn/
Htmlized:       https://tools.ietf.org/html/draft-chen-rdns-urn-06
Diff:           https://www.ietf.org/rfcdiff?url2=draft-chen-rdns-urn-06

Thanks,
Helen

> -----Original Message-----
> From: Dale R. Worley [mailto:worley@ariadne.com]
> Sent: Friday, March 18, 2016 4:50 PM
> To: Ing-Wher (Helen) Chen <ichen@kuatrotech.com>;
> Cc: urn-nid@apps.ietf.org
> Subject: draft-chen-rdns-urn-05 (Re: two-week review: registering formal
> "rdns" NID)
> 
> This version clarifies and simplifies many issues and I think it is nearly ready for
> publication.  However, there are two issues:
> 
>        <rdns-trans>     ::= <lower> | <number> | <others> | <reserved>
> 
> Comparing with RFC 2141, "<others>" should be "<other>".
> 
> The alternative "<reserved>" should be removed.  In RFC 2141, I see:
> 
>    <trans>       ::= <upper> | <lower> | <number> | <other> | <reserved>
> 
> However the final alternative in that production is not to be used in practice.  Its
> expansion is:
> 
>    <reserved>    ::= '%" | "/" | "?" | "#"
> 
> However, the immediately following text in 2141 states that "%" is to be used
> only to introduce %-escapes (which this draft does in the production "<rdns-
> URN-char>").  And the remaining three characters are described as
> 
>    RFC 1630 [2] reserves the characters "/", "?", and "#" for particular
>    purposes. The URN-WG has not yet debated the applicability and
>    precise semantics of those purposes as applied to URNs. Therefore,
>    these characters are RESERVED for future developments.  Namespace
>    developers SHOULD NOT use these characters in unencoded form, but
>    rather use the appropriate %-encoding for each character.
> 
> Dale