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gnutls_record_send_range(3) — Linux manual page

gnutls_record_send_range(3)       gnutlsgnutls_record_send_range(3)

NAME        top

       gnutls_record_send_range - API function

SYNOPSIS        top

#include <gnutls/gnutls.h>ssize_t gnutls_record_send_range(gnutls_session_tsession, constvoid *data, size_tdata_size, const gnutls_range_st *range);

ARGUMENTS        top

       gnutls_session_t session                   is agnutls_session_ttype.       const void * data                   contains the data to send.       size_t data_size                   is the length of the data.       const gnutls_range_st * range                   is the range of lengths in which the real data length                   must be hidden.

DESCRIPTION        top

       This function operates likegnutls_record_send()but, whilegnutls_record_send()adds minimal padding to each TLS record, this       function uses the TLS extra-padding feature to conceal the real       data size within the range of lengths provided.  Some TLS sessions       do not support extra padding (e.g. stream ciphers in standard TLS       or SSL3 sessions). To know whether the current session supports       extra padding, and hence length hiding, use thegnutls_record_can_use_length_hiding()function.

NOTE        top

       This function currently is limited to blocking sockets.

RETURNS        top

       The number of bytes sent (that is data_size in a successful       invocation), or a negative error code.

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_send_range(3)

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