---
name: "gnutls_x509_ext_import_tlsfeatures"
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_x509_ext_import_tlsfeatures"
---

# gnutls\_x509\_ext\_import\_tlsfeatures(3)

API function

## NAME

gnutls\_x509\_ext\_import\_tlsfeatures - API function

## SYNOPSIS

**#include \<gnutls/x509-ext.h\>**

**int gnutls\_x509\_ext\_import\_tlsfeatures(const gnutls\_datum\_t \*** *ext***, gnutls\_x509\_tlsfeatures\_t** *f***, unsigned int** *flags***);**

## ARGUMENTS

- const gnutls\_datum\_t \* ext

  The DER-encoded extension data

- gnutls\_x509\_tlsfeatures\_t f

  The features structure

- unsigned int flags

  zero or **GNUTLS\_EXT\_FLAG\_APPEND**

## DESCRIPTION

This function will export the features in the provided DER-encoded TLS Features PKIX extension, to a **gnutls\_x509\_tlsfeatures\_t** type.  *f* must be initialized.

When the  *flags* is set to **GNUTLS\_EXT\_FLAG\_APPEND**, then if the  *features* structure is empty this function will behave identically as if the flag was not set. Otherwise if there are elements  in the  *features* structure then they will be merged with.

## RETURNS

On success, **GNUTLS\_E\_SUCCESS** (0) is returned, otherwise a negative error value.

## SINCE

3\.5.1

## 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/