Is it possible to also start an HTTP instance when HTTPS is configured which will redirect you to the HTTPS instance? Likely known as the Rewrite Enginge in Apache2?
RewriteEngine On
RewriteCond %{HTTPS} !=on
RewriteRule ^/?(.*) https://%{SERVER_NAME}/$1 [R,L]
When opening the browser and pointing to the HTTP instance instead of HTTPS you get the following error:
ERR_EMPTY_RESPONSE
Which means no data is send on this port.