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

worley@ariadne.com (Dale R. Worley) Mon, 04 April 2016 21:07 UTC

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From: worley@ariadne.com (Dale R. Worley)
To: "Ing-Wher \(Helen\) Chen" <ichen@kuatrotech.com>
Subject: Re: draft-chen-rdns-urn-05 (Re: two-week review: registering formal "rdns" NID)
In-Reply-To: <DB5PR06MB0950179FD3BA6617C2B830D4D08C0@DB5PR06MB0950.eurprd06.prod.outlook.com> (ichen@kuatrotech.com)
Sender: worley@ariadne.com (Dale R. Worley)
Date: Mon, 04 Apr 2016 17:07:06 -0400
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"Ing-Wher (Helen) Chen" <ichen@kuatrotech.com>; writes:
> Thanks very much for the corrections.  I updated to version -06.

That takes care of the issues I identified.

Dale

>> -----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