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gnutls_record_recv_early_data(3)    gnutls    gnutls_record_recv_early_data(3)

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 (C) 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/local/share/doc/gnutls/ directory does not contain the HTML
       form visit

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

gnutls                               3.7.9    gnutls_record_recv_early_data(3)