@Override
    public void init(final FilterConfig filterConfig) {
        final String regex = filterConfig.getInitParameter(IGNORE_URI_REGEX);
        if (regex != null) {
            pattern = Pattern.compile(regex);
        }
    }
<p>
Filter to avoid posts to the wrong place (e.g. the root of the app)
</p>
stroom-proxy/stroom-proxy-app/src/main/java/stroom/proxy/app/servlet/ProxySecurityFilter.java