brotli with Apache and PHP-FPM - possible?

[Tomasz Chmielewski <mangoo@xxxxxxxxxxxxxxxxxxxx>]

I've tried enabling brotli with Apache on Ubuntu 20.04 (running Apache 
2.4.41). Brotli works, but not for content generated with PHP.

It works for HTML files:

$ curl -v -H "Accept-Encoding: gzip, deflate, br" 
https://server.tld/pp.html 2>&1 | grep content-encoding
< content-encoding: br

But does not work if it's PHP - in this case, the content is compressed 
with "gzip":

$ curl -v -H "Accept-Encoding: gzip, deflate, br" 
https://server.tld/pp.php 2>&1 | grep content-encoding
< content-encoding: gzip

Curiously, it does work with PHP if I specify "br" as the only value in 
"Accept-Encoding" (browsers however use "gzip, deflate, br"):

$ curl -v -H "Accept-Encoding: br" https://server.tld/pp.php 2>&1 | grep 
content-encoding
< content-encoding: br

So, what is the problem here?


I've enabled brotli by running:

a2enmod brotli

and adding the following part to the vhost (followed by apache restart):

AddOutputFilterByType BROTLI_COMPRESS text/html text/plain text/xml 
text/css text/javascript application/x-javascript application/javascript 
application/json application/x-font-ttf application/vnd.ms-fontobject 
image/x-icon


Tomasz Chmielewski

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