@deftypefun {ssize_t} {gnutls_record_send2} (gnutls_session_t @var{session}, const void * @var{data}, size_t @var{data_size}, size_t @var{pad}, unsigned @var{flags})
@var{session}: is a @code{gnutls_session_t}  type.

@var{data}: contains the data to send

@var{data_size}: is the length of the data

@var{pad}: padding to be added to the record

@var{flags}: must be zero

This function is identical to @code{gnutls_record_send()}  except that it
takes an extra argument to specify padding to be added the record.
To determine the maximum size of padding, use
@code{gnutls_record_get_max_size()}  and @code{gnutls_record_overhead_size()} .

Note that in order for GnuTLS to provide constant time processing
of padding and data in TLS1.3, the flag @code{GNUTLS_SAFE_PADDING_CHECK} 
must be used in @code{gnutls_init()} .

@strong{Returns:} The number of bytes sent, or a negative error code.  The
number of bytes sent might be less than  @code{data_size} .  The maximum
number of bytes this function can send in a single call depends
on the negotiated maximum record size.

@strong{Since:} 3.6.3
@end deftypefun