strange DNS queries with mod_proxy

I'm running Apache 2.0.40 on RHEL 9.0, IP address 10.10.10.20. Another
web server, 10.10.10.10, hosts example.com. The reverse-proxy box at
..20 is using mod_proxy with the following in httpd.conf:

<IfModule mod_proxy.c>
ProxyRequests Off
<Proxy *>
Order allow,deny
Allow from all
</Proxy>
ProxyVia Off
</IfModule>

<VirtualHost *>
ServerName example.com
ServerAlias www.example.com
ProxyPass / http://www.example.com
ProxyPassReverse / http://www.example.com
</VirtualHost>



HTTP/1.1 GET / for example.com serves up the default document as
expected. However, the default document uses a style sheet
(/style/apr04.css) which must then be requested by the client.

When the client sends a GET /style/apr04.css, I see in an Ethereal
packet capture that the proxy server does a DNS lookup for
"example.comstyle". Any other request to something below the root
level, such as http://example.com/foo/bar.html, creates a DNS lookup for
"example.comfoo".

Has anyone seen this bizarre behavior before, and does anyone know how
to correct it?

Jordan

Jordan Peterson wrote:
 > <VirtualHost *>
 > ServerName example.com
<font color=purple> > ServerAlias <a style='text-decoration: underline;' href="http://www.example.com</font" target="_blank">www.example.com</font</a>>
<font color=purple> > ProxyPass / <a style='text-decoration: underline;' href="http://www.example.com</font" target="_blank">http://www.example.com</font</a>>
<font color=purple> > ProxyPassReverse / <a style='text-decoration: underline;' href="http://www.example.com</font" target="_blank">http://www.example.com</font</a>>
 > </VirtualHost>

Fixed the problem. I should have used a trailing slash, e.g.:

ProxyPass / <a style='text-decoration: underline;' href="http://www.example.com/" target="_blank">http://www.example.com/</a>
ProxyPassReverse / <a style='text-decoration: underline;' href="http://www.example.com/" target="_blank">http://www.example.com/</a>
*NOT*
ProxyPass / <a style='text-decoration: underline;' href="http://www.example.com" target="_blank">http://www.example.com</a>
ProxyPassReverse / <a style='text-decoration: underline;' href="http://www.example.com" target="_blank">http://www.example.com</a>

Just posting for the benefit of anyone else who may encounter this
problem. Noticing this obvious syntactical error made me feel a bit silly.

Jordan<!-- ~MESSAGE_AFTER~ -->