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From Dean Gaudet <dgau...@arctic.org>
Subject Re: protocol/1582: VirtualHosts no longer work as part of HTTP/0.9 request
Date Sat, 20 Dec 1997 20:20:00 GMT
The following reply was made to PR protocol/1582; it has been noted by GNATS.

From: Dean Gaudet <dgaudet@arctic.org>
To: Todd Vierling <tv@pobox.com>
Cc: apbugs@hyperreal.org
Subject: Re: protocol/1582: VirtualHosts no longer work as part of HTTP/0.9 request
Date: Sat, 20 Dec 1997 12:22:18 -0800 (PST)

 On Sat, 20 Dec 1997, Todd Vierling wrote:
 > On Fri, 19 Dec 1997, Dean Gaudet wrote:
 > : You've read the vhosts documentation, and you've updated your
 > : configuration files appropriately, correct?  And the server generates no
 > : error_log entries when you boot it?  If so can you provide a small example
 > : config file that demonstrates this problem?
 > Yep.  vhosting with HTTP/1.1 style Host: headers works flawlessly (Lynx
 > 2.7.1 and Netscape 4.04, my two major browsers, use this).  However,
 > checking again this morning, I found part of the problem. 
 > Under 1.2.x, the "outside virtual hosts" directives managed to catch
 > requests without a virtual host, but under 1.3, the first vhost (not
 > _default_!) catches them.  So I had to find a way to make the first vhost
 > intercept such unqualified requests, and redirect them.  I used mod_rewrite.
 What do you mean "outside virtual hosts"?  Under 1.3 the first vhost on a
 NameVirtualHost address catches any request which does not match any of
 the other name-vhosts on that address; that's how it is documented.
 _default_ catches only IP addresses which are otherwise unmatched, not names.
 > but it seems that the %{REQUEST_URI} only includes the fully qualified
 > request when a CGI such as env.cgi is run(!).  Here, it is stripped of the
 > http://host part.
 This is a mod_rewrite problem, not a vhosting problem.
 > Basically, I have no way, by testing environment variables at rewrite time,
 > to see that a request had no virtual host information.  Perhaps HTTP_HOST
 > should always be set on a virtual host request, even an "old-style one"? 
 Any request that makes it to the first name-vhost did not match any of the
 others.  There's no need to look at the URL or the Host: header, apache
 has already done it.  You can do this:
 NameVirtualHost a.b.c.d
 <VirtualHost a.b.c.d>
     ServerName some-arbitrary-name
     RewriteEngine On
     RewriteRule .* http://somewhereelse/upgrade.html [R]
 <VirtualHost a.b.c.d>
     ServerName www.customer1.com
 <VirtualHost a.b.c.d>
     ServerName www.customer2.com

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