private static final Draft perMessageDeflateDraft = new Draft_6455(new PerMessageDeflateExtension());  
    private static class DeflateClient extends WebSocketClient { 
        public DeflateClient() throws URISyntaxException {
            super(new URI("ws://localhost:" + PORT), perMessageDeflateDraft);
        }

private static class DeflateServer extends WebSocketServer {
        public DeflateServer() { 
            super(new InetSocketAddress(PORT), Collections.singletonList(perMessageDeflateDraft));
        }