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RE: [schemeProtocols-49] New issue on relationship of URI schemes to protocols and operations

From: Larry Masinter <LMM@acm.org>
Date: Wed, 16 Mar 2005 10:10:13 -0800
To: "'Chris Lilley'" <chris@w3.org>, noah_mendelsohn@us.ibm.com
Cc: www-tag@w3.org
Message-id: <0IDG00HUVIH141@mailsj-v1.corp.adobe.com>

I'm not sure how much you're reading into the description.
The "access method" for "cid:" and "mid:" are well understood
outside of any particular context, it's only that the method
is only invokable in some contexts. I think they'd work inside
any number of contexts, though.

And the interpretation of "data:" doesn't depend at all
on the context.

I think the text you're quoting was removed from the updated
http://www.ietf.org/internet-drafts/draft-hansen-2717bis-2718bis-uri-guideli
nes-03.txt

and replaced with more general advice for "2.3 Well-Defined"

   While URIs may or may not be useful as locators in practice, a URI
   scheme definition itself should be clear as to how it is expected to
   function.  Schemes that are not intended to be used as locators
   should still describe how the resource indicated can be identified by
   software that obtains a URI of that scheme.


Larry
-- 
http://larry.masinter.net


> -----Original Message-----
> From: Chris Lilley [mailto:chris@w3.org] 
> Sent: Wednesday, March 16, 2005 9:49 AM
> To: noah_mendelsohn@us.ibm.com
> Cc: www-tag@w3.org; Larry Masinter
> Subject: Re: [schemeProtocols-49] New issue on relationship 
> of URI schemes to protocols and operations
> 
> On Tuesday, March 15, 2005, 3:49:40 AM, noah wrote:
> 
> 
> nuic> 2.2.3 Definition of non-protocol URL schemes
> 
> nuic> In some cases, URL schemes do not have particular network
> nuic> protocols associated with them, because their use is limited to
> nuic> contexts where the access method is understood. This is 
> the case,
> nuic> for example, with the "cid" and "mid" URL schemes. For these URL
> nuic> schemes, the specification should describe the notation of the
> nuic> scheme and a complete mapping of the locator from its source."
> 
> data: is another scheme that falls into this category.
> 
> RFC 2397
> 'The "data" URL scheme',
> L. Masinter, August 1998.
> http://www.ietf.org/rfc/rfc2397.txt.
> 
> -- 
>  Chris Lilley                    mailto:chris@w3.org
>  Chair, W3C SVG Working Group
>  W3C Graphics Activity Lead
> 
Received on Wednesday, 16 March 2005 18:10:37 GMT

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