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NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURNS | SINCE | REPORTING BUGS | COPYRIGHT | SEE ALSO | COLOPHON |
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gnutls_session_get_id2(3) gnutls gnutls_session_get_id2(3)
gnutls_session_get_id2 - API function
#include <gnutls/gnutls.h>
int gnutls_session_get_id2(gnutls_session_t session,
gnutls_datum_t * session_id);
gnutls_session_t session
is a gnutls_session_t type.
gnutls_datum_t * session_id
will point to the session ID.
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.
On success, GNUTLS_E_SUCCESS (0) is returned, otherwise an error
code is returned.
3.1.4
Report bugs to <[email protected]>.
Home page: https://www.gnutls.org
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.
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/
This page is part of the GnuTLS (GnuTLS Transport Layer Security
Library) project. Information about the project can be found at
⟨http://www.gnutls.org/⟩. If you have a bug report for this
manual page, send it to [email protected]. This page was obtained
from the tarball fetched from
⟨https://www.gnupg.org/ftp/gcrypt/gnutls/⟩ on 2025-08-11. If you
discover any rendering problems in this HTML version of the page,
or you believe there is a better or more up-to-date source for the
page, or you have corrections or improvements to the information
in this COLOPHON (which is not part of the original manual page),
send a mail to [email protected]
gnutls 3.8.10 gnutls_session_get_id2(3)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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