CODE EXAMPLE FOR SHELL

curl tcp handshake ssl handshake time

$ curl -w "dns_resolution: %{time_namelookup}, tcp_established: %{time_connect}, ssl_handshake_done: %{time_appconnect}, TTFB: %{time_starttransfer}
" -o /dev/null -s "https://sushi.herokuapp.com/"
dns_resolution: 0.067, tcp_established: 0.175, ssl_handshake_done: 0.598, TTFB: 0.708