@deftypefun {unsigned} {gnutls_ocsp_status_request_is_checked} (gnutls_session_t @var{session}, unsigned int @var{flags})

@var{session}: is a gnutls session

@var{flags}: should be zero or @code{GNUTLS_OCSP_SR_IS_AVAIL} 

When flags are zero this function returns non-zero if a valid OCSP status

response was included in the TLS handshake. That is, an OCSP status response

which is not too old, superseded or marks the certificate as revoked.

It returns zero otherwise.

When the flag @code{GNUTLS_OCSP_SR_IS_AVAIL}  is specified, the function

returns non-zero if an OCSP status response was included in the handshake

even if it was invalid. Otherwise, if no OCSP status response was included,

it returns zero. The @code{GNUTLS_OCSP_SR_IS_AVAIL}  flag was introduced in GnuTLS 3.4.0.

This is a helper function when needing to decide whether to perform an

explicit OCSP validity check on the peer's certificate. Should be called after

any of gnutls_certificate_verify_peers*() are called.

This function is always usable on client side, but on server side only

under TLS 1.3, which is the first version of TLS that allows cliend-side OCSP

responses.

@strong{Returns:} Non-zero if the response was valid, or a zero if it wasn't sent,

or sent and was invalid.

@strong{Since:} 3.1.4

@end deftypefun