Issue with mod_proxy and customer proxy
am 25.11.2009 17:29:09 von jeremie.grauer
Hello,
I have changed our main reverse proxy server on our network from an old
debian woody server with apache httpd 1 to a debian lenny with apache
httpd version 2.2.9-10+lenny6.
Before, our customer had no problem with the reverse proxy, but now,
some of them can no longer use our proxied website, or it's so slow
that the timeout is reached.
The problem always happen for user with corporate proxy contacting our
own reverse proxy (without a proxy before our reverse proxy, everything
works just fine), but when I told those customer that the problem come
from their proxy configuration, I have trouble explaining why it worked
before and why we are the only website they have trouble with...
Bellow is my reverse proxy vhost : (using http or https doesn't matter
to have the problem)
<IfModule mod_ssl.c>
<VirtualHost xx.xx.xx.xx:443>
       ServerName support.enterprise.com
       ServerAdmin
       SSLEngine On
       SSLCertificateFile   /etc/apache2/ssl/wildcard-enterprise.crt
       SSLCertificateKeyFile /etc/apache2/ssl/wildcard-enterprise.key
       ProxyRequests Off
       <Proxy *>
               Order Deny,Allow
               Allow from all
       </Proxy>
       ProxyPass /
       ProxyPassReverse /
</VirtualHost>
</IfModule>Â
<VirtualHost xx.xx.xx.xx:80>
       ServerName support.enterprise.com
       ServerAdmin
       ProxyRequests Off
       <Proxy *>
               Order Deny,Allow
               Allow from all
       </Proxy>
       ProxyPass /
       ProxyPassReverse /
</VirtualHost>
The error I got in the error.log are (http access) :
For customer A : [error] (104)Connection reset by peer: proxy: prefetch
request body failed to 172.16.15.53:10000 (srv-53.enterprise.com) from
yy.yy.yy.yy ()
For customer B & C : [error] (70007)The timeout specified has
expired: proxy: prefetch request body failed to
(srv-53.enterprise.com)
For customer B, they told me they are using "squid/2.5.STABLE7-NT" and
customer C is using "squid/2.7.STABLE6" (on Solaris for customer C), I
don't know what proxy is used by customer A except that it's not squid.
Customer B client side error :
---------
ERROR
The requested URL could not be reieved
While trying to retrieve the URL: [no URL]
The following error was encountered:
   - Read Timeout
The system returned:
 [No Error]
A Timeout occured while waiting to read data from the network. the
netwokr or server may be down or congested. Please retry your request.
Generated by client-B-squid-server.com (
---------
Customer C client side error :
---------
Bad Request
Your browser sent a request that this server could not understand.
Apache/2.2.9 (Debian) proxy_html/3.0.0 mod_ssl/2.2.9 OpenSSL/0.9.8g
Server at support.enterprise.com Port 80
---------
Any idea how to
fix this ?
Jeremie
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