# Headers only using GET
curl -s -D - -o /dev/null --url https://www.romanstefko.com/
# HEAD request
curl -I https://www.romanstefko.com/
# Test with local IP address
curl --resolve 'www.romanstefko.com:443:192.168.1.10' -s -D - -o /dev/null --url https://www.romanstefko.com/
# HTTP Proxy
curl -x http://proxy:3128 https://www.romanstefko.com