Dan,
in http://www.w3.org/TR/uri-clarification/ I read "An http URI is a URL" . So I concluded that a different
http URI is a different URL (address). At this I assumed, that all http URIs which refer to the same address
(case insensitive), are defined as "identical". Is this correct?
Best,
Wolfgang
----- Original Message -----
From: "Dan Brickley" <[email protected]>
To: "Wolfgang Orthuber" <[email protected]>
Cc: "David Booth" <[email protected]>; "semantic-web" <[email protected]>; "Linked Data community"
<[email protected]>
Sent: Tuesday, May 26, 2009 12:51 PM
Subject: Re: numeric web search (Was: URLs instead of URNs)
On 26/5/09 14:45, Wolfgang Orthuber wrote:
[...]
Though different HTTP URIs always refer to different addresses
Where do you get this from?
Do you mean "though different HTTP URIs are different URIs"?
http://example.com:80/foo
and
http://EXAMple.COM/foo
...both address (or fail to address) the same thing.
If you want to consider these different "addresses" (for potentially the same thing), you're welcome. But
the rules of HTTP URIs mean that there's nothing named (addressed) by the one but not by the other. Domain
names are case insensitive, and HTTP URIs default to port 80.
There are other situations where we might say a pair of HTTP URIs happen accidentally (perhaps for a while,
perhaps forever) to be for the same underlying thing. But the example above is one in which they simply are
different ways of writing the same thing.
cheers,
Dan
