[10068] in www-talk@info.cern.ch
RE: HTTP HEAD requests for Last-Modified info
daemon@ATHENA.MIT.EDU (Dave Cole)
Wed Jun 19 03:34:40 1996
From: Dave Cole <dcole@netcarta.com>
To: "'Stephen Zagerman'" <steve@wco.com>,
"www-talk@w3.org"
<www-talk@w3.org>
Date: Tue, 18 Jun 1996 22:56:33 -0700
Resent-From: www-talk@w3.org
Returning of Last-Modified is server dependent. There is nothing that I
know of in the protocol that will force a server to return the
Last-Modified. I have noticed that several servers don't always return this
information.
Sorry,
dcole
----------
From: Stephen Zagerman[SMTP:steve@wco.com]
Sent: Tuesday, June 18, 1996 8:53 PM
To: www-talk@w3.org
Subject: HTTP HEAD requests for Last-Modified info
Awhile ago, I posted a question re: HTTP requests to obtain Last-Modified
info for web pages. I got answers that indicated the way to get header info
for a theoretical "www.site.com/page.html" would be to open a connection to
www.site.com and issue the following request:
HEAD /page.html HTTP/1.0 <CRLF><CRLF>
This is good in that it does elicit a set of info, but it's bad in that it
does not ALWAYS return Last-Modified info... which is what I really need.
Does anyone know if there is something additional I need to add to the
request to ALWAYS get the Last-Modified info? I've read the spec, but am
not clear on what I need to do.
Thanks,
Stephen Zagerman
