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From Chris Huisman <chris.huis...@pizza73.com>
Subject Re: [users@httpd] Apache 2.2.3 prefork mpm mod_proxy_ajp
Date Fri, 23 Mar 2007 14:56:46 GMT
So has nobody else experienced the same problem?  Is this a bug?  Should 
I provide more information?  Where can I find the error codes for proxy ajp?

Chris.

Chris Huisman wrote:
> Hello,
>
> I'm having a problem with mod_proxy_ajp, I am receiving the following 
> error messages:
>
> [Fri Mar 16 11:37:37 2007] [error] ajp_check_msg_header() got bad 
> signature 420
> [Fri Mar 16 11:37:37 2007] [error] ajp_ilink_receive() received bad 
> header
> [Fri Mar 16 11:37:37 2007] [error] ajp_read_header: ajp_ilink_receive 
> failed
> [Fri Mar 16 11:37:37 2007] [error] (120007)APR does not understand 
> this error code: proxy: read response failed from url:8009 ( url)
> [Fri Mar 16 13:28:45 2007] [error] (70007)The timeout specified has 
> expired: ajp_ilink_receive() can't receive header
> [Fri Mar 16 13:28:45 2007] [error] ajp_read_header: ajp_ilink_receive 
> failed
> [Fri Mar 16 13:28:45 2007] [error] (120006)APR does not understand 
> this error code: proxy: read response failed from url:8009 (url)
>
> in my apache error log.
> The following are my configuration files:
>
> httpd.conf:
>
> ...
> Timeout 300
>
> KeepAlive On
>
> MaxKeepAliveRequests 0
> KeepAliveTimeout 15
>
> <IfModule prefork.c>
> StartServers 8
> MinSpareServers 10
> MaxSpareServers 25
> ServerLimit 256
> MaxClients 256
> MaxRequestsPerChild 4000
> </IfModule>
>
> <VirtualHost url:80>
>        ServerAdmin webadmin@xxx.com <mailto:webadmin@xxx.com>
>        DocumentRoot /var/www/html
>        ServerName www.url.com <http://www.xxx.com/>
>        ServerAlias www.url.ca <http://www.xxx.ca/> www.url.biz 
> <http://www.xxx.biz/>  url.com <http://xxx.com/> url.ca 
> <http://xxx.ca/> url.biz <http://xxx.biz/>
>        ProxyPreserveHost On
>        ProxyRequests Off
>
>        Redirect 301 /cgi-bin/edd.cgi 
> http://www.url.com/order/product.html 
> <http://www.xxx.com/order/product.html>
>        Redirect 301 /cgi-bin/menu.cgi 
> http://www.url.com/order/product.html 
> <http://www.xxx.com/order/product.html>
>
> </VirtualHost>
>
>
> In my tomcat server.xml, I have:
>
>    <!-- Define an AJP 1.3 Connector on port 8009 -->
>    <Connector address="url"
>               port="8009"
>               enableLookups="false"
>               protocol="AJP/1.3"
>               minSpareThreads="20"
>               maxSpareThreads="200"
>               maxThreads="1024"
>               connectionTimeout="600000"
>     />
>
> and my proxy_ajp.conf:
>
> ProxyPass /order ajp://url:8009/order
> ProxyPass /dwr ajp://url:8009/dwr
>
> The error messages come up intermittently maybe 5 times a day 
> (although the ajp_check_msg_header() is a new one).  I believe what 
> happens is the user gets to the secure checkout page, hits the order 
> button and then the error shows up in the log file, but what the user 
> gets is a blank page instead of the order confirmation page.  Could 
> this be an SSL thing?
>
> I've been through the mailing lists and seen some advice for people 
> who are using the worker mpm, but nothing when using prefork.
>
> Can anyone please, let me know what is going on (I'd like to 
> understand why I get the error messages) and what to do prevent the 
> error from coming up.
>
> Thanks all for your consideration it is appreciated,
>
> Chris.
>
>
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