@deftypefun {gnutls_keylog_func} {gnutls_session_get_keylog_function} (const gnutls_session_t @var{session})
@var{session}: is @code{gnutls_session_t}  type

This function will return the callback function set using
@code{gnutls_session_set_keylog_function()} .

@strong{Returns:} The function set or @code{NULL}  otherwise.

@strong{Since:} 3.6.13
@end deftypefun