gnutls_record_send_range(3)        gnutls        gnutls_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_t session, const void
       * data, size_t data_size, const gnutls_range_st * range);

ARGUMENTS         top

       gnutls_session_t session
                   is a gnutls_session_t type.

       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 like gnutls_record_send() but, while
       gnutls_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 the
       gnutls_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 <>.
       Home page:

COPYRIGHT         top

       Copyright © 2001-2018 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 

COLOPHON         top

       This page is part of the GnuTLS (GnuTLS Transport Layer Security
       Library) project.  Information about the project can be found at 
       ⟨⟩.  If you have a bug report for this manual
       page, send it to  This page was obtained from the
       tarball gnutls-3.6.2.tar.xz fetched from
       ⟨⟩ on 2018-04-30.  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 is not part of the original manual page), send a mail

gnutls                              3.6.2        gnutls_record_send_range(3)