Passing REQUEST_URI php-fm after a rewrite in Apache

We are trying to migrate an installation to Apache event engine replacing mod_php for PHP-FPM.
We have a large an complex list of rewrites performed by apache from old urls and also to produce SEO friendly URLs as in:

#Ej: /holidays/costa-del-sol/nombre-99.html
RewriteRule ^/holidays/([^/])/([^/])-([d]+).html$ /scripts/pack.php?package=$3&lang=eng [QSA,P,E=notAllowedParams:package-region-regionname-lang,E=ORIG_URI:/$1]

But furthermore, our PHP also confirms that the clients used URL is valid and otherwise performs a redirect. For this, we evaluate the $SERVER REQUEST_URI variable, but this variable is now incorrectly set to the second "script" url instead of the source.

This is… Apache receives a request for URL X, rewrites (no 301) internally to a Y address. With mod_php that is transparent to PHP but now as we "proxy" to PHP-FM the Y script is called (so the rewrite is executed) but we can’t find a way to force REQUEST_URI value to be maintained and received by PHP.

Our Apache config for PHP-FPM

<FilesMatch .php$>
    # 2.4.10+ can proxy to unix socket
    # SetHandler "proxy:unix:/var/run/php5-fpm.sock|fcgi://localhost/"
    # Else we can just use a tcp socket:
    SetHandler "proxy:fcgi://"
ProxyPassMatch ^/(..php(/.)?)$ fcgi://${GIS_JOSE}/www/$1 enablereuse=on

We’ve tried various options to retain that value without success:

ProxyPreserveHost On
ProxyRequests Off
ProxyFCGISetEnvIf "true" REQUEST_URI "%{reqenv:REQUEST_URI}"
RewriteOptions InheritBefore

Our doubt is if it’s not possible or we are missing something regarding the order of execution.

Server Fault Asked by luison on November 22, 2021

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