UserAgentType uaType = (UserAgentType) request.getAttribute(USER_AGENT_TYPE);
            if (uaType == null) {
                final String userAgent = request.getHeader(USER_AGENT);
                if (userAgent != null) {
                    if (userAgent.indexOf("MSIE") >= 0 || userAgent.indexOf("Trident") >= 0) {
                        uaType = UserAgentType.IE;

            throws IOException, ServletException {
        final HttpServletRequest httpRequest = (HttpServletRequest) request;
        final String origin = httpRequest.getHeader("Origin");
        if (StringUtil.isNotBlank(origin)) {
            if (logger.isDebugEnabled()) {
                logger.debug("HTTP Request: method={}", httpRequest.getMethod());
            }

     */
    protected void sendApiResponse(final HttpServletResponse response) throws IOException {
        response.setStatus(429);
        response.setContentType("application/json;charset=UTF-8");
        response.setHeader("Retry-After", String.valueOf(RETRY_AFTER_SECONDS));
        response.getWriter()
                .write("{\"response\":{\"status\":9,\"message\":\"Server is busy. Please retry after " + RETRY_AFTER_SECONDS

        return LaRequestUtil.getOptionalRequest().map(req -> {
            for (final Tuple3<String, String, String> host : vHosts) {
                final String headerValue = req.getHeader(host.getValue1());
                if (host.getValue2().equalsIgnoreCase(headerValue)) {
                    return func.apply(host.getValue3());
                }
            }
            return defaultValue;

        }

        if (SingletonLaContainerFactory.getExternalContext().getRequest() != null) {
            return LaRequestUtil.getOptionalRequest().map(request -> {
                final String userAgent = request.getHeader("user-agent");
                if (StringUtil.isBlank(userAgent)) {
                    return false;
                }

                return pathMapping.getUAMatcher(userAgent).find();

     * @param request The request.
     * @return The access token.
     */
    public String getAccessTokenFromRequest(final HttpServletRequest request) {
        final String token = request.getHeader("Authorization");
        if (token != null) {
            final String[] values = token.trim().split(" ");
            if (values.length == 2 && BEARER.equals(values[0])) {
                return values[1];
            }

        // Only trust proxy headers if the request comes from a trusted proxy
        if (isTrustedProxy(remoteAddr)) {
            final String xForwardedFor = request.getHeader("X-Forwarded-For");
            if (StringUtil.isNotBlank(xForwardedFor)) {
                final String clientIp = xForwardedFor.split(",")[0].trim();
                if (logger.isDebugEnabled()) {

        response.setStatus(429); // Too Many Requests
        response.setContentType("application/json;charset=UTF-8");
        response.setHeader("Retry-After", String.valueOf(retryAfterSeconds));
        response.getWriter()
                .write("{\"error\":\"rate_limit_exceeded\",\"message\":\"Too many requests. Please retry after " + retryAfterSeconds