Provided by: gnutls-doc_3.8.3-1.1ubuntu3.4_all bug

NAME
       gnutls_session_get_id - API function


SYNOPSIS
       #include <gnutls/gnutls.h>

       int gnutls_session_get_id(gnutls_session_t session, void * session_id, size_t * session_id_size);


ARGUMENTS
       gnutls_session_t session
                   is a gnutls_session_t type.

       void * session_id
                   is a pointer to space to hold the session id.

       size_t * session_id_size
                   initially should contain the maximum  session_id size and will be updated.


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  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.


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


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/

gnutls                                                3.8.3                             gnutls_session_get_id(3)