Function SSLGetProtocolVersionEnabled 

pub unsafe extern "C-unwind" fn SSLGetProtocolVersionEnabled(
    context: &SSLContext,
    protocol: SSLProtocol,
    enable: NonNull<u8>,
) -> i32

👎Deprecated: No longer supported. Use Network.framework.

Available on crate features SecProtocolTypes and SecureTransport only.

Safety

enable must be a valid pointer.