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

# [NAME](#NAME)

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

# [SYNOPSIS](#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](#ARGUMENTS)

[gnutls\_x509\_crq\_t crq](#gnutls_x509_crq_t)

An X.509 certificate request

[gnutls\_x509\_tlsfeatures\_t features](#gnutls_x509_tlsfeatures_t)

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

[unsigned int flags](#unsigned)

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

[unsigned int * critical](#unsigned~2)

the extension status

# [DESCRIPTION](#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](#RETURNS)

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

# [SINCE](#SINCE)

3.5.1

# [REPORTING BUGS](#REPORTING_BUGS)

Report bugs to <bugs@gnutls.org>.  
Home page: https://www.gnutls.org

# [COPYRIGHT](#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](#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/](https://www.gnutls.org/manual/)

3.8.13 gnutls

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Document: gnutls_x509_crq_get_tlsfeatures(3) from gnutls 3.8.13-r3 (Chainguard OS)
Source: https://gitlab.com/gnutls/gnutls