server {
    listen 80;
    server_name example.com;

    location / {
        proxy_pass http://127.0.0.1/$request_uri;
        proxy_redirect off;
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }

}

server {
    listen 443;
    server_name example.com;

    location / {
        proxy_pass https://127.0.0.1/$request_uri;
        proxy_redirect off;
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }

}

server {
    listen 16384-32768;
    server_name example.com;

    location / {
        proxy_pass 127.0.0.1:$server_port/$request_uri;
        proxy_redirect off;
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }

}