---
name: "gnutls_x509_crq_get_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_crq_get_tlsfeatures"
---

# gnutls\_x509\_crq\_get\_tlsfeatures(3)

API function

## NAME

gnutls\_x509\_crq\_get\_tlsfeatures - API function

## SYNOPSIS

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

**int gnutls\_x509\_crq\_get\_tlsfeatures(gnutls\_x509\_crq\_t** *crq***, gnutls\_x509\_tlsfeatures\_t** *features***, unsigned int** *flags***, unsigned int \*** *critical***);**

## ARGUMENTS

- gnutls\_x509\_crq\_t crq

  An X.509 certificate request

- gnutls\_x509\_tlsfeatures\_t features

  If the function succeeds, the features will be stored in this variable.

- unsigned int flags

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

- unsigned int \* critical

  the extension status

## DESCRIPTION

This function will get the X.509 TLS features extension structure from the certificate request. The returned structure needs to be freed using **gnutls\_x509\_tlsfeatures\_deinit()**.

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.

Note that  *features* must be initialized prior to calling this function.

## 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/