Async HTTP Request Connection Timeout Not Work Correctly about clj-http HOT 3 OPEN

public class Main {
    public static void main(String[] args) throws IOReactorException {
        RequestConfig requestConfig = RequestConfig.custom()
                .setConnectTimeout(1)
                .setSocketTimeout(500)
                .setRedirectsEnabled(true)
                .build();
        HttpUriRequest httpUriRequest = new HttpGet("http://255.255.33.44:8001/");
        httpUriRequest.addHeader("Connection", "close");
        IOReactorConfig reactorConfig = IOReactorConfig.custom()
//                .setConnectTimeout(500)
//                .setSoTimeout(500)
                .setShutdownGracePeriod(1)
                .build();
        DefaultConnectingIOReactor defaultConnectingIOReactor = new DefaultConnectingIOReactor(reactorConfig);
        Registry registry = RegistryBuilder.create()
                .register("http", NoopIOSessionStrategy.INSTANCE)
                .build();
        PoolingNHttpClientConnectionManager connectionManager = new PoolingNHttpClientConnectionManager(defaultConnectingIOReactor, registry);
        HttpClientContext context = new HttpClientContext();
        context.setRequestConfig(requestConfig);
        connectionManager.setMaxTotal(1);
        CloseableHttpAsyncClient client = HttpAsyncClients.custom()
                .setConnectionManager(connectionManager)
                .build();
        client.start();
        long startTime = System.nanoTime();
        client.execute(httpUriRequest, context, new FutureCallback<HttpResponse>() {
            @Override
            public void completed(HttpResponse httpResponse) {
                StatusLine statusLine = httpResponse.getStatusLine();
                int statusCode = statusLine.getStatusCode();
                long stopTime = System.nanoTime();
                System.out.print("=====completed, timeElapsed: ");
                System.out.print(TimeUnit.MILLISECONDS.convert(System.nanoTime() - startTime, TimeUnit.NANOSECONDS));
                System.out.println(" ms");
                System.out.print(statusCode);
            }

            @Override
            public void failed(Exception e) {
                System.out.print("=====failed, timeElapsed: ");
                System.out.print(TimeUnit.MILLISECONDS.convert(System.nanoTime() - startTime, TimeUnit.NANOSECONDS));
                System.out.println(" ms");
                System.out.print("=====error msg: " + e.getMessage());
                try {
                    connectionManager.shutdown();
                } catch (IOException ex) {
                    ex.printStackTrace();
                }
            }

            @Override
            public void cancelled() {
                httpUriRequest.abort();
                try {
                    connectionManager.shutdown();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        });
    }
}