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 only 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: http://www.gnutls.org

COPYRIGHT

       Copyright © 2001-2021 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

       http://www.gnutls.org/manual/