Re: Link checking (only)
Steven Champeon (schampeo@hesketh.com)
Mon, 12 May 1997 16:34:44 -0400
Message-Id: <3.0.1.32.19970512163444.02d4e8c8@mail.imvi.com>
Date: Mon, 12 May 1997 16:34:44 -0400
To: Walter Ian Kaye <walter@natural-innovations.com>, www-html@w3.org
From: Steven Champeon <schampeo@hesketh.com>
Subject: Re: Link checking (only)
In-Reply-To: <v03102804af9d1c86675b@[205.149.180.135]>
At 12:22 PM 5/12/97 -0700, Walter Ian Kaye graced us with:
> This is probably more of an http question, but...
>
> Is there a standard way to check the existence of a URL resource without
> actually downloading it? Preferably something supported by "all" web
> servers? Hmm, that brings up another question: How does one find out what
> commands are supported by different web servers?
from <URL:http://www.w3.org/pub/WWW/Protocols/rfc1945/rfc1945>
8.2 HEAD
The HEAD method is identical to GET except that the server must not
return any Entity-Body in the response. The metainformation contained
in the HTTP headers in response to a HEAD request should be identical
to the information sent in response to a GET request. This method can
be used for obtaining metainformation about the resource identified
by the Request-URI without transferring the Entity-Body itself. This
method is often used for testing hypertext links for validity,
accessibility, and recent modification.
There is no "conditional HEAD" request analogous to the conditional
GET. If an If-Modified-Since header field is included with a HEAD
request, it should be ignored.
Steve
--
Steven Champeon | What we do not understand
http://www.hesketh.com/schampeo | we do not possess.
http://www.jaundicedeye.com | - Goethe