module Netsys_crypto:sig..end
val current_tls : unit -> (module Netsys_crypto_types.TLS_PROVIDER)init function
of the provider, e.g. Nettls_gnutls.init.val current_tls_opt : unit -> (module Netsys_crypto_types.TLS_PROVIDER) optioncurrent_tls but it returns None if TLS is unavailable