NAME

       gnutls_record_recv_early_data - API function

SYNOPSIS

       #include <gnutls/gnutls.h>

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

ARGUMENTS

       gnutls_session_t session
                   is a gnutls_session_t type.

       void * data the buffer that the data will be read into

       size_t data_size
                   the number of requested bytes

DESCRIPTION

       This  function  can  be  used  by  a  server  to retrieve data sent 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_recv().

       This function can be called either in a handshake hook, or after the handshake is complete.

RETURNS

       The  number  of  bytes  received  and zero when early data reading is complete.  A negative error code is
       returned in case of an error.  If no early data is received during the handshake, this  function  returns
       GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE.  The number of bytes received might be less than the requested
        data_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                                                3.8.9                     gnutls_record_recv_early_data(3)