NAME

       gnutls_record_send_early_data - API function

SYNOPSIS

       #include <gnutls/gnutls.h>

       ssize_t  gnutls_record_send_early_data(gnutls_session_t session, const void * data, size_t
       data_size);

ARGUMENTS

       gnutls_session_t session
                   is a gnutls_session_t type.

       const void * data
                   contains the data to send

       size_t data_size
                   is the length of the data

DESCRIPTION

       This function can be used by a client to send data early in the handshake  processes  when
       resuming  a session.  This is used to implement a zero-roundtrip (0-RTT) mode.  It has the
       same semantics as gnutls_record_send().

       There  may  be  a  limit  to   the   amount   of   data   sent   as   early   data.    Use
       gnutls_record_get_max_early_data_size()  to  check  the limit.  If the limit exceeds, this
       function returns GNUTLS_E_RECORD_LIMIT_REACHED.

RETURNS

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

SINCE

       3.6.5

REPORTING BUGS

       Report bugs to <bugs@gnutls.org>.
       Home page: https://www.gnutls.org

COPYRIGHT

       Copyright © 2001- Free Software Foundation, Inc., and others.
       Copying and distribution of this file, with or without modification, are permitted in  any
       medium without royalty provided the copyright notice and this notice are preserved.

SEE ALSO

       The   full   documentation  for  gnutls  is  maintained  as  a  Texinfo  manual.   If  the
       /usr/share/doc/gnutls/ directory does not contain the HTML form visit

       https://www.gnutls.org/manual/