oleg.dulin at gmail
Jun 7, 2012, 7:52 AM
Post #2 of 2
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Re: mod_proxy, jetty -- (20014)Internal error: proxy: error reading status line
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Ok, problem solved by switching to nginx…. Thank you guys.
On 2012-06-04 13:51:14 +0000, Oleg Dulin said:
> We have a configuration as follows:
>
> Apache2 httpd with mod_proxy (2.2.15) in the DMZ
> Java server process with embedded Jetty in the secure zone
> All calls to the Java server are POST made by an iPad application
>
>
> The mod_proxy configuration looks like this:
>
> <VirtualHost ……. >
> ProxyRequests Off
> ProxyPreserveHost On
> <Proxy *>
> Order allow,deny
> Allow from all
> </Proxy>
> ProxyPass /ls http://jetty:8080/url
> ProxyPassReverse /ls http://jetty:8080/url
>
> </VirtualHost>
>
> Sporadically, quite disturbingly it is about every 4th or 5th HTTP
> POST, we get this:
>
> 502 error sent back to the iPad application and at that moment in the
> httpd error log we get this:
>
> [Fri Jun 01 17:06:28 2012] [error] [client 71.197.43.86]
> (20014)Internal error: proxy: error reading status line from remote
> server ……….
> [Fri Jun 01 17:06:28 2012] [error] [client 71.197.43.86] proxy: Error
> reading from remote server returned by …..
>
> (URLs obfusaced)
>
> I tried everything under the sun and different combinations of it, with
> no luck.
>
> SetEnv proxy-nokeepalive 1
> #SetEnv force-proxy-request-1.0 1
> SetEnv proxy-initial-not-pooled 1
> #SetEnv proxy-sendcl 1
>
> Now, one thing is that in the QA environment there is a firewall and
> xinetd in between Apache and Jetty. In dev environment that isn ot the
> case, and I haven't tried it in dev yet. But the problem persists in
> both places.
>
> I don't believe this is unique to Jetty as I found plenty of discussion
> about Tomcat, weblogic, IIS, etc. having this problem.
>
> Any thoughts are greatly appreciated.
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