Hi, I have tried with the above configuration in my environment with plain http connection for apache/wordpress, it is not working for me. My configuration details are as below.
nginx:

 proxy_pass http://upstream/$request_uri;
 proxy_set_header X-Forwarded-Host $host;
 proxy_set_header X-Forwarded-Proto $scheme;

apache .htaccess:

# BEGIN WordPress

RewriteEngine On
RewriteBase /blog/
RewriteRule ^index\.php$ – [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /blog/index.php [L]

wp-config.php:
if ( (!empty( $_SERVER[‘HTTP_X_FORWARDED_HOST’])) || (!empty( $_SERVER[‘HTTP_X_FORWARDED_FOR’])) ) {
$_SERVER[‘HTTPS’] = ‘on’;
}

When I am hitting nginx URL, apache/WordPress port is appearing in the browser URL as https://host-one:8080/blog/ instead https://host-one:9443/blog (My Nginx https port is 9443). Can you please advise, what is missing in my configuration. Thanks.