easy:SetOpt_Proxy_CAInfo_Blob(blob)
Pass a string with binary data of PEM encoded content holding one or more certificates to verify the HTTPS proxy with.
If #CURLOPT_PROXY_SSL_VERIFYPEER
is zero and you avoid verifying the
server's certificate, #CURLOPT_PROXY_CAINFO_BLOB
is not needed.
This option overrides #CURLOPT_PROXY_CAINFO
.