gnutls_record_recv_early_data(3) — Linux manual page

gnutls_record_recv_early_data(3)  gnutls gnutls_record_recv_early_data(3)

NAME         top

       gnutls_record_recv_early_data - API function

SYNOPSIS         top

       #include <gnutls/gnutls.h>

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

ARGUMENTS         top

       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         top

       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         top

       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         top

       3.6.5

REPORTING BUGS         top

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

COPYRIGHT         top

       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         top

       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/

COLOPHON         top

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       ⟨http://www.gnutls.org/⟩.  If you have a bug report for this
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gnutls                            3.8.10 gnutls_record_recv_early_data(3)

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