gnutls_record_send_range(3)

NAME
gnutls_record_send_range - API function

SYNOPSIS
#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

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
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
This function currently is limited to blocking sockets.

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

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

COPYRIGHT
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
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/