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RE: Can "http://danbri.org" and "http://danbri.org/" URIs represent different things?

From: Williams, Stuart (HP Labs, Bristol) <skw@hp.com>
Date: Wed, 1 Jul 2009 10:02:12 +0000
To: Dan Brickley <danbri@danbri.org>
CC: "www-tag@w3.org WG" <www-tag@w3.org>
Message-ID: <233101CD2D78D64E8C6691E90030E5C832D3318796@GVW1120EXC.americas.hpqcorp.net>
Hi Dan,

Had a little play with wget, firefox and tcpmon. Interestingly, http://danbri.org doesn't seem to make it to the request line - all external appearance are that the request is for http://danbri.org/ . Kind of make http://danbri.org web inaccessible. 

Note wget and firefox both appear to make request for http://danbri.org/ - which is what gets rewritten into the browser address bar - no redirections, no content-location... all before fact of making the request.

So a bit like using #'d URI, the URI that makes it to the request line is different from the one used in the reference.


GET http://danbri.org/ HTTP/1.1
Host: danbri.org
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv: Gecko/2009060215 Firefox/3.0.11 (.NET CLR 3.5.30729)
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-gb,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Proxy-Connection: keep-alive

HTTP/1.1 200 OK
Date: Wed, 01 Jul 2009 09:45:32 GMT
Server: Apache/2.2.11 (Ubuntu) PHP/5.2.6-3ubuntu4.1 with Suhosin-Patch
Last-Modified: Sat, 09 May 2009 15:01:37 GMT
ETag: "9b4b6-412-4697c05936f66"
Accept-Ranges: bytes
Vary: Accept-Encoding
Content-Type: text/html
Content-length: 1042
Proxy-Connection: Keep-Alive
Connection: Keep-Alive
Age: 349

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML+RDFa 1.0//EN" "http://www.w3.org/MarkUp/DTD/xhtml-rdfa-1.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" 
      xmlns:foaf="http://xmlns.com/foaf/0.1/" >
<title>Dan Brickley</title>
<link rel="meta" type="application/rdf+xml" title="FOAF" href="http://danbri.org/foaf.rdf" />

			<link rel="openid2.provider" href="http://danbri.org/words/openid/server" />
			<link rel="openid2.local_id" href="http://danbri.org/words/author/danbri/" />
			<link rel="openid.server" href="http://danbri.org/words/openid/server" />
			<link rel="openid.delegate" href="http://danbri.org/words/author/danbri/" />

<p>This is the new minimalist danbri.org.</p>
<p>Nearby: <a href="words/">Dan's blog</a></p>
<!--     <link rel="openid2.local_id" href="https://me.yahoo.com/danbri3" />
    <link rel="openid2.provider" href="https://open.login.yahooapis.com/openid/op/auth" />
    <meta http-equiv="X-XRDS-Location" content="https://me.yahoo.com/danbri3" />

> -----Original Message-----
> From: www-tag-request@w3.org [mailto:www-tag-request@w3.org] 
> On Behalf Of Dan Brickley
> Sent: 01 July 2009 01:54
> To: www-tag@w3.org WG
> Subject: Can "http://danbri.org" and "http://danbri.org/" 
> URIs represent different things?
> Hello TAG,
> Talking with some SW folk about OpenID, and whether my 
> "me-the-person" 
> URI could be practically usable as my OpenID, I came up with this 
> corner-case:
> Could http://danbri.org be a URI for "me the person", and 
> http://danbri.org/ be a document about me (and also serve as 
> my OpenID)?
> As I understand HTTP, any client must request something, so 
> the former 
> isn't directly de-referencable. The client has to decide to ask for / 
> from danbri.org instead. But they're still different URIs, 
> aren't they?
> Is...
> <Person  xmlns:foaf="http://xmlns.com/foaf/0.1"/
>           rdf:about="http://danbri.org">
>   <openid>
>      <Document rdf:about="http://danbri.org/"/>
>   </openid>
> </Person>
> ...at all feasible? I guess it depends on how exactly we 
> think about the 
> "add a / to the end" step...
> cheers,
> Dan
Received on Wednesday, 1 July 2009 10:03:58 UTC

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