set_real_ip_from 192.168.4.0/24;
    real_ip_header proxy_protocol;

    proxy_set_header Host $host;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_set_header X-Forwarded-Host $http_host;
    proxy_set_header X-Forwarded-Server $host;
    proxy_set_header X-Real-IP $proxy_protocol_addr;
    proxy_set_header X-Forwarded-For $proxy_protocol_addr;
    #proxy_set_header X-Real-IP $remote_addr;
    #proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

    location ~* \.(ico|css|js|gif|jpe?g|png)(\?[0-9]+)?$ {
        expires max;
        log_not_found off;
    }