Provided by: gnutls-doc_3.7.7-2ubuntu2_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- 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/