---
name: "gnutls_session_set_id"
section: "3"
platform: "linux"
package: "gnutls"
version: "3.8.13-3"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/gnutls_session_set_id"
---

# gnutls\_session\_set\_id(3)

API function

## NAME

gnutls\_session\_set\_id - API function

## SYNOPSIS

**#include \<gnutls/gnutls.h\>**

**int gnutls\_session\_set\_id(gnutls\_session\_t** *session***, const gnutls\_datum\_t \*** *sid***);**

## ARGUMENTS

- gnutls\_session\_t session

  is a **gnutls\_session\_t** type.

- const gnutls\_datum\_t \* sid

  the session identifier

## DESCRIPTION

This function sets the session ID to be used in a client hello. This is a function intended for exceptional uses. Do not use this function unless you are implementing a custom protocol.

To set session resumption parameters use **gnutls\_session\_set\_data()** instead.

## RETURNS

On success, **GNUTLS\_E\_SUCCESS** (0) is returned, otherwise an error code is returned.

## SINCE

3\.2.1

## 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/