---
name: "gnutls_certificate_set_ocsp_status_request_function2"
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_certificate_set_ocsp_status_request_function2"
---

# gnutls\_certificate\_set\_ocsp\_status\_request\_function2(3)

API function

## NAME

gnutls\_certificate\_set\_ocsp\_status\_request\_function2 - API function

## SYNOPSIS

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

**int gnutls\_certificate\_set\_ocsp\_status\_request\_function2(gnutls\_certificate\_credentials\_t** *sc***, unsigned** *idx***, gnutls\_status\_request\_ocsp\_func** *ocsp\_func***, void \*** *ptr***);**

## ARGUMENTS

- gnutls\_certificate\_credentials\_t sc

  is a **gnutls\_certificate\_credentials\_t** type.

- unsigned idx

  is a certificate index as returned by **gnutls\_certificate\_set\_key()** and friends

- gnutls\_status\_request\_ocsp\_func ocsp\_func

  function pointer to OCSP status request callback.

- void \* ptr

  opaque pointer passed to callback function

## DESCRIPTION

This function is to be used by server to register a callback to provide OCSP status requests that correspond to the indexed certificate chain from the client.  The callback will be invoked if the client supplied a status-request OCSP extension.

The callback function prototype is:

typedef int (\*gnutls\_status\_request\_ocsp\_func) (gnutls\_session\_t session, void \*ptr, gnutls\_datum\_t \*ocsp\_response);

The callback will be invoked if the client requests an OCSP certificate status.  The callback may return **GNUTLS\_E\_NO\_CERTIFICATE\_STATUS**, if there is no recent OCSP response. If the callback returns **GNUTLS\_E\_SUCCESS**, it is expected to have the  *ocsp\_response* field set with a valid (DER-encoded) OCSP response. The response must be a value allocated using **gnutls\_malloc()**, and will be deinitialized by the caller.

## NOTE

the ability to set multiple OCSP responses per credential structure via the index  *idx* was added in version 3.5.6. To keep backwards compatibility, it requires using **gnutls\_certificate\_set\_flags()** with the **GNUTLS\_CERTIFICATE\_API\_V2** flag to make the set certificate functions return an index usable by this function.

## RETURNS

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

## SINCE

3\.5.5

## 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/