How to change REQUEST_SCHEME to https when proxying?

Question

Nginx

Actually the next problem. There is an nginx Server that accepts various requests for 3 domains over HTTPS and redirects them to 3 local ones, depending on the domain in the request.



respectively, on the servers for sites (site1-site3) in the super global array, there are the following values:
$_SERVER['REQUEST_SCHEME'] = 'http'
$_SERVER['SERVER_PORT'] = '80'

Accordingly, many problems arise because of this. How it is possible to force servers to replace these values?
Using PHP is not an option, because not all sites use a single entry point where you can cheat and replace these values ​​with your hands

Answer 1

It turned out, but logically it is not possible to establish an exact connection.
If you specify the server name with the scheme and port in the Apache settings (ServerName https://site1.ru:443), then the array becomes:
$_SERVER['REQUEST_SCHEME'] = 'https'
$_SERVER['SERVER_PORT'] = '443 '
However, the links on the site are built incorrectly and lead to site1.ru , however, if you enable UseCanonicalPhysicalPort On, then the links on the site are treated, but so far it is not possible to understand the logic

Answer 2

Don't use nginx.