Pass a long with a bitmask to tell libcurl about specific SSL behaviors.
CURLSSLOPT_ALLOW_BEAST tells libcurl to not attempt to use any
workarounds for a security flaw in the SSL3 and TLS1.0 protocols. If this
option isnt used or this bit is set to 0, the SSL layer libcurl uses may use a
work-around for this flaw although it might cause interoperability problems
with some (older) SSL implementations. WARNING: avoiding this work-around
lessens the security, and by setting this option to 1 you ask for exactly that.
This option is only supported for DarwinSSL, NSS and OpenSSL.
Added in 7.44.0:
CURLSSLOPT_NO_REVOKE tells libcurl to disable certificate revocation
checks for those SSL backends where such behavior is present. Currently this
option is only supported for WinSSL (the native Windows SSL library), with an
exception in the case of Windows Untrusted Publishers blacklist which it seems
cant be bypassed. This option may have broader support to accommodate other
SSL backends in the future.