---
name: "gnutls_certificate_type_get2"
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_type_get2"
---

# gnutls\_certificate\_type\_get2(3)

API function

## NAME

gnutls\_certificate\_type\_get2 - API function

## SYNOPSIS

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

**gnutls\_certificate\_type\_t gnutls\_certificate\_type\_get2(gnutls\_session\_t** *session***, gnutls\_ctype\_target\_t** *target***);**

## ARGUMENTS

- gnutls\_session\_t session

  is a **gnutls\_session\_t** type.

- gnutls\_ctype\_target\_t target

  is a **gnutls\_ctype\_target\_t** type.

## DESCRIPTION

This function returns the type of the certificate that a side is negotiated to use.  The certificate type is by default X.509, unless an alternative certificate type is enabled by **gnutls\_init()** and negotiated during the session.

The  *target* parameter specifies whether to request the negotiated certificate type for the client (**GNUTLS\_CTYPE\_CLIENT**), or for the server (**GNUTLS\_CTYPE\_SERVER**). Additionally, in P2P mode connection set up where you don't know in advance who will be client and who will be server you can use the flag (**GNUTLS\_CTYPE\_OURS**) and (**GNUTLS\_CTYPE\_PEERS**) to retrieve the corresponding certificate types.

Resumed sessions will return the certificate type that was negotiated and used in the original session. That is, this function can be used to reliably determine the type of the certificate returned by **gnutls\_certificate\_get\_peers()**.

## RETURNS

the currently used **gnutls\_certificate\_type\_t** certificate type for the client or the server.

## SINCE

3\.6.4

## 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/