@deftypefun {int} {gnutls_ocsp_req_get_nonce} (gnutls_ocsp_req_const_t @var{req}, unsigned int * @var{critical}, gnutls_datum_t * @var{nonce})
@var{req}: should contain a @code{gnutls_ocsp_req_t}  type

@var{critical}: whether nonce extension is marked critical, or NULL

@var{nonce}: will hold newly allocated buffer with nonce data

This function will return the OCSP request nonce extension data.

The caller needs to deallocate memory by calling @code{gnutls_free()}  on
 @code{nonce} ->data.

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