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gnutls_record_recv_early_data(3) — Linux manual page

gnutls_record_recv_early_data(3)  gnutlsgnutls_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_tsession,void *data, size_tdata_size);

ARGUMENTS        top

       gnutls_session_t session                   is agnutls_session_ttype.       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 asgnutls_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       returnsGNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE.  The number of       bytes received might be less than the requesteddata_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 forgnutlsis maintained as a Texinfo       manual.  If the /usr/share/doc/gnutls/ directory does not contain       the HTML form visithttps://www.gnutls.org/manual/

COLOPHON        top

       This page is part of theGnuTLS (GnuTLS Transport Layer Security       Library) project.  Information about the project can be found at       ⟨http://www.gnutls.org/⟩.  If you have a bug report for this       manual page, send it to bugs@gnutls.org.  This page was obtained       from the tarball fetched from       ⟨https://www.gnupg.org/ftp/gcrypt/gnutls/⟩ on 2025-08-11.  If you       discover any rendering problems in this HTML version of the page,       or you believe there is a better or more up-to-date source for the       page, or you have corrections or improvements to the information       in this COLOPHON (which isnot part of the original manual page),       send a mail to man-pages@man7.orggnutls                            3.8.10gnutls_record_recv_early_data(3)

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