org.eclipse.jetty.http2.frames.DataFrame Java Examples

@Override
public void onData(Stream stream, DataFrame frame, Callback callback) {
    LOG.info("onData {}", stream.getId());
    try {
        boolean endStream = frame.isEndStream();
        byte[] bytes = new byte[frame.getData().remaining()];
        frame.getData().get(bytes);
        EchoMessage echoMessage = objectMapper.readValue(bytes, EchoMessage.class);
        LOG.info("got echo {}", echoMessage.getMessage());
        String response = echoService.ping(echoMessage.getMessage());
        EchoMessage echoResponse = new EchoMessage(response);
        LOG.info("echo response {}", echoResponse.getMessage());
        DataFrame responseFrame = new DataFrame(stream.getId(),
                ByteBuffer.wrap(objectMapper.writeValueAsBytes(echoResponse)), endStream);
        stream.data(responseFrame, new Callback() {});
        callback.succeeded();
        LOG.info("echo done");
    } catch (IOException e) {
        LOG.error("IOException: ", e);
    }
}
 

public DataFrame nextFrame() throws IOException {
  int read = in.read(buffer);
  if (read == -1) {
    endStream = true;
    return new DataFrame(stream.getId(),
        ByteBuffer.wrap(buffer, 0, 0), true);
  } else {
    return new DataFrame(stream.getId(),
        ByteBuffer.wrap(buffer, 0, read), false);
  }
}
 

@Override
public void onData(Stream stream, DataFrame frame, Callback callback) {
    LOG.info("onData");
    bytes = new byte[frame.getData().remaining()];
    frame.getData().get(bytes);
    countDownLatch.countDown();
    callback.succeeded();
}
 

private String sendMessage(GetListener getListener, Stream stream, String message, boolean endStream) throws JsonProcessingException {
    EchoMessage echoMessage = new EchoMessage(message);
    DataFrame dataFrame = new DataFrame(stream.getId(),
            ByteBuffer.wrap(objectMapper.writeValueAsBytes(echoMessage)), endStream);
    stream.data(dataFrame , new Callback() {});
    EchoMessage echoResponse = getListener.get(EchoMessage.class);
    getListener.restart();
    return echoResponse.getMessage();
}
 

public static void main(String[] args) throws Exception {
    long startTime = System.nanoTime();

    // Create and start HTTP2Client.
    HTTP2Client client = new HTTP2Client();
    SslContextFactory sslContextFactory = new SslContextFactory(true);
    client.addBean(sslContextFactory);
    client.start();

    // Connect to host.
    String host = "localhost";
    int port = 8443;

    FuturePromise<Session> sessionPromise = new FuturePromise<>();
    client.connect(sslContextFactory, new InetSocketAddress(host, port), new ServerSessionListener.Adapter(), sessionPromise);

    // Obtain the client Session object.
    Session session = sessionPromise.get(5, TimeUnit.SECONDS);

    // Prepare the HTTP request headers.
    HttpFields requestFields = new HttpFields();
    requestFields.put("User-Agent", client.getClass().getName() + "/" + Jetty.VERSION);
    // Prepare the HTTP request object.
    MetaData.Request request = new MetaData.Request("GET", new HttpURI("https://" + host + ":" + port + "/"), HttpVersion.HTTP_2, requestFields);
    // Create the HTTP/2 HEADERS frame representing the HTTP request.
    HeadersFrame headersFrame = new HeadersFrame(request, null, true);

    // Prepare the listener to receive the HTTP response frames.
    Stream.Listener responseListener = new Stream.Listener.Adapter()
    {
        @Override
        public void onData(Stream stream, DataFrame frame, Callback callback)
        {
            byte[] bytes = new byte[frame.getData().remaining()];
            frame.getData().get(bytes);
            int duration = (int) TimeUnit.NANOSECONDS.toSeconds(System.nanoTime() - startTime);
            System.out.println("After " + duration + " seconds: " + new String(bytes));
            callback.succeeded();
        }
    };

    session.newStream(headersFrame, new FuturePromise<>(), responseListener);
    session.newStream(headersFrame, new FuturePromise<>(), responseListener);
    session.newStream(headersFrame, new FuturePromise<>(), responseListener);

    Thread.sleep(TimeUnit.SECONDS.toMillis(20));

    client.stop();
}
 

@Override
public void onData(Stream stream, DataFrame frame, Callback callback) {

}