Provided by: gnutls-doc_3.7.7-2ubuntu2_all bug

NAME
       gnutls_session_get_id2 - API function


SYNOPSIS
       #include <gnutls/gnutls.h>

       int gnutls_session_get_id2(gnutls_session_t session, gnutls_datum_t * session_id);


ARGUMENTS
       gnutls_session_t session
                   is a gnutls_session_t type.

       gnutls_datum_t * session_id
                   will point to the session ID.


DESCRIPTION
       Returns the TLS session identifier. The session ID is selected by the server, and in older
       versions of TLS was a unique  identifier  shared  between  client  and  server  which  was
       persistent  across resumption.  In the latest version of TLS (1.3) or TLS 1.2 with session
       tickets, the notion of session identifiers is undefined and cannot be relied for  uniquely
       identifying sessions across client and server.

       In  client side this function returns the identifier returned by the server, and cannot be
       assumed to have any relation to session resumption.   In  server  side  this  function  is
       guaranteed  to return a persistent identifier of the session since GnuTLS 3.6.4, which may
       not necessarily map into the TLS session ID value. Prior to that version the  value  could
       only  be  considered  a persistent identifier, under TLS1.2 or earlier and when no session
       tickets were in use.

       The session identifier value returned is always less than  GNUTLS_MAX_SESSION_ID_SIZE  and
       should be treated as constant.


RETURNS
       On success, GNUTLS_E_SUCCESS (0) is returned, otherwise an error code is returned.


SINCE
       3.1.4


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


COPYRIGHT
       Copyright © 2001- 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/