---
name: "gnutls_x509_crt_set_proxy"
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_crt_set_proxy"
---

# gnutls\_x509\_crt\_set\_proxy(3)

API function

## NAME

gnutls\_x509\_crt\_set\_proxy - API function

## SYNOPSIS

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

**int gnutls\_x509\_crt\_set\_proxy(gnutls\_x509\_crt\_t** *crt***, int** *pathLenConstraint***, const char \*** *policyLanguage***, const char \*** *policy***, size\_t** *sizeof\_policy***);**

## ARGUMENTS

- gnutls\_x509\_crt\_t crt

  a certificate of type **gnutls\_x509\_crt\_t**

- int pathLenConstraint

  non-negative error codes indicate maximum length of path, and negative error codes indicate that the pathLenConstraints field should not be present.

- const char \* policyLanguage

  OID describing the language of  *policy* .

- const char \* policy

  uint8\_t byte array with policy language, can be **NULL**

- size\_t sizeof\_policy

  size of  *policy* .

## DESCRIPTION

This function will set the proxyCertInfo extension.

## RETURNS

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

## 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/