@deftypefun {void} {gnutls_supplemental_recv} (gnutls_session_t @var{session}, unsigned @var{do_recv_supplemental})
@var{session}: is a @code{gnutls_session_t}  type.

@var{do_recv_supplemental}: non-zero in order to expect supplemental data

This function is to be called by an extension handler to
instruct gnutls to attempt to receive supplemental data
during the handshake process.

@strong{Since:} 3.4.0
@end deftypefun