Vertx Post Fail

HttpClientOptions options = new HttpClientOptions().setKeepAlive(true).setConnectTimeout(300).setIdleTimeout(300);
        HttpClient client = vertx.createHttpClient(options);
        JsonObject Params = new JsonObject();
        Logger logger = Logger.getLogger("Login");
        Params.put("username", "REMOVED FOR PRIVACY");
        Params.put("password", "REMOVED FOR PRIVACY");
        logger.info("Not valid Cookie");
        HttpClientRequest Request = client.postAbs("https://www.roblox.com:443/NewLogin", Res -> {
            logger.info("Sent Login Request");
            logger.info(Params.encode());
            Res.bodyHandler(Body -> {
                logger.info("We have the Body");
                logger.info(String.valueOf(Res.cookies().size()));
                logger.info(Body.toString());
                for (String TempCookie : Res.cookies()) {
                    logger.info(TempCookie);
                    if (TempCookie.startsWith(".ROBLOSECURITY=")) { //We have it!
                        logger.info("We have the cookie");
                    }
                }
            });
        });
        logger.info("Headers start");
        Request.putHeader("Accept", "*/*");
        Request.putHeader("Accept-Encoding", "gzip, deflate");
        Request.putHeader("Content-Type", "application/json");
        Request.putHeader("Content-Length", String.valueOf(Params.encode().length()));
        logger.info(String.valueOf(Params.encode().length()));
        Request.putHeader("User-Agent", "runscope/0.1");
        logger.info("Headers End");
        logger.info(Params.encode());
        Request.write(Params.encode());
        Request.end();