[OpenID] What is a URL, exactly?

Robert Yates robyates70 at gmail.com
Tue Feb 13 00:02:16 UTC 2007


On 2/12/07, Joaquin Miller <joaquin at netmesh.us> wrote:
>  So:  The URI, ' mailto:joaquin at netmesh.us', i s   a URL.
>
>  Fire away!

k :), so why does openid 2.0 not allow ' mailto:joaquin at netmesh.us' to
be an "identifier" and why does it also redefine "identifier" as
follows?

"An Identifier is either a "http" or "https" URI, (commonly referred
to as a "URL" within this document), or an XRI (Reed, D. and D.
McAlpin, "Extensible Resource Identifier (XRI) Syntax V2.0," .)
[XRI_Syntax_2.0]."

when RFC 3986 has a perfectly good definition for "identifier" that
the rest of the internet manages to get by with :) i.e.

"An identifier embodies the information required to distinguish what
is being identified from all other things within its scope of
identification.  ......."

It seems strange, to me, that openid 2.0 restricts identifiers to a
specific subset of URIs, i.e. http, https and xri. Why is this?

Rob



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