---
name: "gnutls_set_default_priority_append"
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_set_default_priority_append"
---

# gnutls\_set\_default\_priority\_append(3)

API function

## NAME

gnutls\_set\_default\_priority\_append - API function

## SYNOPSIS

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

**int gnutls\_set\_default\_priority\_append(gnutls\_session\_t** *session***, const char \*** *add\_prio***, const char \*\*** *err\_pos***, unsigned** *flags***);**

## ARGUMENTS

- gnutls\_session\_t session

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

- const char \* add\_prio

  is a string describing priorities to be appended to default

- const char \*\* err\_pos

  In case of an error this will have the position in the string the error occurred

- unsigned flags

  must be zero

## DESCRIPTION

Sets the default priority on the ciphers, key exchange methods, and macs with the additional options in  *add\_prio* . This is the recommended method of setting the defaults when only few additional options are to be added. This promotes consistency between applications using GnuTLS, and allows GnuTLS using applications to update settings in par with the library.

The  *add\_prio* string should start as a normal priority string, e.g., with ':'.

To allow a user to override the defaults (e.g., when a user interface or configuration file is available), the functions **gnutls\_priority\_set\_direct()** or **gnutls\_priority\_set()** can be used.

## RETURNS

**GNUTLS\_E\_SUCCESS** on success, or an error code.

## SINCE

3\.6.3

## 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/