Re: Link checking (only)

Steven Champeon (
Mon, 12 May 1997 16:34:44 -0400

Message-Id: <>
Date: Mon, 12 May 1997 16:34:44 -0400
To: Walter Ian Kaye <>,
From: Steven Champeon <>
Subject: Re: Link checking (only)
In-Reply-To: <v03102804af9d1c86675b@[]>

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:>

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.


Steven Champeon                    |    What we do not understand    |      we do not possess.        |          - Goethe