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From Jim Jagielski <...@jaguNET.com>
Subject Re: svn commit: r1802336 - /httpd/httpd/trunk/docs/manual/mod/mod_proxy_fcgi.xml
Date Wed, 19 Jul 2017 11:45:08 GMT
There's nothing in the way we handle UDS that prevents "reuse"
even understanding that we use the term "reuse" to mean both
"cache the IP address" and "use the connection as a one-shot".
There's no diff between UDS and sockets from the module PoV.

> On Jul 19, 2017, at 4:26 AM, Luca Toscano <toscano.luca@gmail.com> wrote:
> 
> Hi Jim,
> 
> 2017-07-18 23:00 GMT+02:00 <jim@apache.org>:
> Author: jim
> Date: Tue Jul 18 21:00:14 2017
> New Revision: 1802336
> 
> URL: http://svn.apache.org/viewvc?rev=1802336&view=rev
> Log:
> UDS does support reuse
> 
> Modified:
>     httpd/httpd/trunk/docs/manual/mod/mod_proxy_fcgi.xml
> 
> Modified: httpd/httpd/trunk/docs/manual/mod/mod_proxy_fcgi.xml
> URL: http://svn.apache.org/viewvc/httpd/httpd/trunk/docs/manual/mod/mod_proxy_fcgi.xml?rev=1802336&r1=1802335&r2=1802336&view=diff
> ==============================================================================
> --- httpd/httpd/trunk/docs/manual/mod/mod_proxy_fcgi.xml (original)
> +++ httpd/httpd/trunk/docs/manual/mod/mod_proxy_fcgi.xml Tue Jul 18 21:00:14 2017
> @@ -98,7 +98,6 @@ ProxyPassMatch "^/myapp/.*\.php(/.*)?$"
>      the hostname and optional port following fcgi:// are ignored.</p>
>      <example><title>PHP-FPM with UDS</title>
>      <highlight language="config">
> -# UDS does not currently support connection reuse
>  ProxyPassMatch "^/(.*\.php(/.*)?)$" "unix:/var/run/php5-fpm.sock|fcgi://localhost/var/www/"
>      </highlight>
>      </example>
> 
> 
> Thanks for the clarification, I was trying to figure out why we had that warning in the
docs but didn't find anything useful. While chatting with Daniel (ezra-s) on IRC it came up
that some users reported on #httpd that mod_proxy_fcgi errors out while re-using UDS sockets,
but he didn't recall the specific issue. In a recent dev@ thread this problem came up again,
so I did a little research and the best report that I found is the following:
> 
> http://z-issue.com/wp/apache-2-4-the-event-mpm-php-via-mod_proxy_fcgi-and-php-fpm-with-vhosts/#comment-6765
> 
> The user found the "UDS does not currently support connection reuse" comment and solved
the issue, so I am wondering if this was a misconfiguration from his side or a known php-fpm
limitation or a bug in mod_proxy_fcgi. I haven't been able to reproduce and this might totally
be a false alarm, but if anybody has more info please speak up so we can investigate it properly
:)
> 
> Luca


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