#!/usr/bin/env sh
set -eu
host="${1:-example.com}"
printf '== certificate ==
'
openssl s_client -connect "$host:443" -servername "$host" </dev/null 2>/dev/null | openssl x509 -noout -subject -issuer -dates
printf '
== HTTPS ==
'
curl -I --http2 --max-time 10 "https://$host/"