---
name: "gnutls_ocsp_req_set_extension"
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_ocsp_req_set_extension"
---

# gnutls\_ocsp\_req\_set\_extension(3)

API function

## NAME

gnutls\_ocsp\_req\_set\_extension - API function

## SYNOPSIS

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

**int gnutls\_ocsp\_req\_set\_extension(gnutls\_ocsp\_req\_t** *req***, const char \*** *oid***, unsigned int** *critical***, const gnutls\_datum\_t \*** *data***);**

## ARGUMENTS

- gnutls\_ocsp\_req\_t req

  should contain a **gnutls\_ocsp\_req\_t** type

- const char \* oid

  buffer with OID of extension as a string.

- unsigned int critical

  critical flag, normally false.

- const gnutls\_datum\_t \* data

  the extension data

## DESCRIPTION

This function will add an extension to the OCSP request.  Calling this function multiple times for the same OID will overwrite values from earlier calls.

## RETURNS

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

## 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/