public boolean sendConnectionEnd() {
        Request req = new Request(LoginInfo,
                                  ServerCommunicator.ACTION_DISCONNEST);
        if (!sendPost(req)) {
            return false;
        }
        int res_code = req.getResultCode();
        if (res_code == this.ACTION_ACCEPT) {
            return true;
        } else {
            return false;
        }
    }