@deftypefun {int} {gnutls_certificate_set_ocsp_status_request_file} (gnutls_certificate_credentials_t @var{sc}, const char * @var{response_file}, unsigned @var{idx})
@var{sc}: is a credentials structure.

@var{response_file}: a filename of the OCSP response

@var{idx}: is a certificate index as returned by @code{gnutls_certificate_set_key()}  and friends

This function loads the provided OCSP response. It will be
sent to the client if requests an OCSP certificate status for
the certificate chain specified by  @code{idx} .

@strong{Note:} the ability to set multiple OCSP responses per credential
structure via the index  @code{idx} was added in version 3.5.6. To keep
backwards compatibility, it requires using @code{gnutls_certificate_set_flags()} 
with the @code{GNUTLS_CERTIFICATE_API_V2}  flag to make the set certificate
functions return an index usable by this function.

This function can be called multiple times since GnuTLS 3.6.3
when multiple responses which apply to the chain are available.
If the response provided does not match any certificates present
in the chain, the code @code{GNUTLS_E_OCSP_MISMATCH_WITH_CERTS}  is returned.
To revert to the previous behavior set the flag @code{GNUTLS_CERTIFICATE_SKIP_OCSP_RESPONSE_CHECK} 
in the certificate credentials structure. In that case, only the
end-certificate's OCSP response can be set.
If the response is already expired at the time of loading the code
@code{GNUTLS_E_EXPIRED}  is returned.

To revert to the previous behavior of this function which does not return
any errors, set the flag @code{GNUTLS_CERTIFICATE_SKIP_OCSP_RESPONSE_CHECK} 

@strong{Returns:} On success, @code{GNUTLS_E_SUCCESS}  (0) is returned,
otherwise a negative error code is returned.

@strong{Since:} 3.1.3
@end deftypefun