nginx.conf

server {
    listen 58080;

    # Disable the port number in redirects, since it's behind a load balancer
    port_in_redirect off;

    location / {
        if ($http_x_forwarded_proto != 'https') {
            return 301 https://$host$request_uri;
        }
    }

    location /__lbheartbeat__ {
        access_log off;
        default_type text/plain;
        return 200 'OK';
    }
}