@deftypefun {int} {gnutls_dh_get_group} (gnutls_session_t @var{session}, gnutls_datum_t * @var{raw_gen}, gnutls_datum_t * @var{raw_prime})
@var{session}: is a gnutls session

@var{raw_gen}: will hold the generator.

@var{raw_prime}: will hold the prime.

This function will return the group parameters used in the last
Diffie-Hellman key exchange with the peer.  These are the prime and
the generator used.  This function should be used for both
anonymous and ephemeral Diffie-Hellman.  The output parameters must
be freed with @code{gnutls_free()} .

Note, that the prime and generator are exported as non-negative
integers and may include a leading zero byte.

@strong{Returns:} On success, @code{GNUTLS_E_SUCCESS}  (0) is returned, otherwise
an error code is returned.
@end deftypefun