time_namelookup: %{time_namelookup}
time_connect: %{time_connect}
time_appconnect: %{time_appconnect}
time_pretransfer: %{time_pretransfer}
time_redirect: %{time_redirect}
time_starttransfer: %{time_starttransfer}
----------
time_total: %{time_total}
curl -w "@curl.txt" -o /dev/null -s https://www.sogo.com
https://www.cnblogs.com/lnlvinso/p/9775484.html