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 © 2001-2023 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/

gnutls                                                3.8.6                     gnutls_record_send_early_data(3)