cURL: Validating TLS versions

I had to demonstrate that our hosting of a single page app did not accept TLS version 1.1,

This is the proof

curl -o /dev/null -s -w "%{http_code}\n" https://koala-moon.com --insecure --tls-max 1.1

Returns: 0000

curl -o /dev/null -s -w "%{http_code}\n" https://koala-moon.com --insecure --tls-max 1.2

Returns: 200

Easy eh?