@deftypefun {const gnutls_protocol_t *} {gnutls_protocol_list} ( @var{void})

Get a list of supported protocols, e.g. SSL 3.0, TLS 1.0 etc.

This function is not thread safe.

@strong{Returns:} a (0)-terminated list of @code{gnutls_protocol_t}  integers
indicating the available protocols.
@end deftypefun