Litespeed

Litespeed / Litespeedtech / OpenLitespeed

You can use this script with Litespeed web server setups too it is not Limited to Nginx only, The reason this works with Litespeed Lua is because they use Openresty Lua builds on their server as can be understood here.

https://openlitespeed.org/kb/openlitespeed-lua-module/#Use