How crub access Self-Signed Certificate website?


My Site’s Certificate is Self-Signed.
(followed the instruction)

if I curl will get the error response.
according to
the followed commands are able to to access my website by curl

openssl s_client -connect |tee logfile
curl --cacert logfile

when I want to use Curb to access my site,
I try to search the Curb manual, I don’t know after getting site’s CA
certificate how Curb import it to perform like curl.

Thank you.