Function md_cert_must_staple

modules/md/md_crypt.c:1823–1828

#define MD_OID_MUST_STAPLE_LNAME        "TLS Feature" 

int md_cert_must_staple(const md_cert_t *cert)
{
    /* In case we do not get the NID for it, we treat this as not set. */
    int nid = MD_GET_NID(MUST_STAPLE);
    return ((NID_undef != nid)) && X509_get_ext_by_NID(cert->x509, nid, -1) >= 0;
}

static apr_status_t add_must_staple(STACK_OF(X509_EXTENSION) *exts, const char *name, apr_pool_t *p)
{