Examples with AsyncContext javax.servlet.AsyncContext used on opensource projects

Example 11 with AsyncContext

use of javax.servlet.AsyncContext in project jetty.project by eclipse.

the class AsyncManipFilter method doFilter.

@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
    LOG.debug("doFilter() - {}", chain);
    AsyncContext ctx = (AsyncContext) request.getAttribute(MANIP_KEY);
    if (ctx == null) {
        LOG.debug("Initial pass through: {}", chain);
        ctx = request.startAsync();
        ctx.addListener(this);
        ctx.setTimeout(1000);
        LOG.debug("AsyncContext: {}", ctx);
        request.setAttribute(MANIP_KEY, ctx);
        return;
    } else {
        LOG.debug("Second pass through: {}", chain);
        chain.doFilter(request, response);
    }
}

Example 12 with AsyncContext

use of javax.servlet.AsyncContext in project jetty.project by eclipse.

the class AsyncTimeoutCompleteWrite method doGet.

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    assertThat("'filename' request attribute shouldn't be declared", request.getAttribute("filename"), nullValue());
    AsyncContext ctx = (AsyncContext) request.getAttribute(this.getClass().getName());
    assertThat("AsyncContext (shouldn't be in request attribute)", ctx, nullValue());
    if (originalReqResp) {
        // Use Original Request & Response
        ctx = request.startAsync();
    } else {
        // Pass Request & Response
        ctx = request.startAsync(request, response);
    }
    String fileName = request.getServletPath();
    request.setAttribute("filename", fileName);
    ctx.addListener(this);
    ctx.setTimeout(20);
    // Setup indication of a redispatch (which this scenario shouldn't do)
    request.setAttribute(this.getClass().getName(), ctx);
}

Example 13 with AsyncContext

use of javax.servlet.AsyncContext in project jetty.project by eclipse.

the class AsyncIOServletTest method testWriteFromOnDataAvailable.

@Test
public void testWriteFromOnDataAvailable() throws Exception {
    Queue<Throwable> errors = new ConcurrentLinkedQueue<>();
    CountDownLatch writeLatch = new CountDownLatch(1);
    start(new HttpServlet() {

        @Override
        protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            AsyncContext asyncContext = request.startAsync();
            request.getInputStream().setReadListener(new ReadListener() {

                @Override
                public void onDataAvailable() throws IOException {
                    ServletInputStream input = request.getInputStream();
                    ServletOutputStream output = response.getOutputStream();
                    while (input.isReady()) {
                        byte[] buffer = new byte[512];
                        int read = input.read(buffer);
                        if (read < 0) {
                            asyncContext.complete();
                            break;
                        }
                        if (output.isReady())
                            output.write(buffer, 0, read);
                        else
                            Assert.fail();
                    }
                }

                @Override
                public void onAllDataRead() throws IOException {
                    asyncContext.complete();
                }

                @Override
                public void onError(Throwable t) {
                    errors.offer(t);
                }
            });
            response.getOutputStream().setWriteListener(new WriteListener() {

                @Override
                public void onWritePossible() throws IOException {
                    writeLatch.countDown();
                }

                @Override
                public void onError(Throwable t) {
                    errors.offer(t);
                }
            });
        }
    });
    String content = "0123456789ABCDEF";
    DeferredContentProvider contentProvider = new DeferredContentProvider();
    contentProvider.offer(ByteBuffer.wrap(content.getBytes(StandardCharsets.UTF_8)));
    CountDownLatch clientLatch = new CountDownLatch(1);
    client.newRequest(newURI()).method(HttpMethod.POST).path(servletPath).content(contentProvider).send(new BufferingResponseListener() {

        @Override
        public void onComplete(Result result) {
            if (result.isSucceeded()) {
                Response response = result.getResponse();
                assertThat(response.getStatus(), Matchers.equalTo(HttpStatus.OK_200));
                assertThat(getContentAsString(), Matchers.equalTo(content));
                assertThat(errors, Matchers.hasSize(0));
                clientLatch.countDown();
            }
        }
    });
    assertTrue(writeLatch.await(5, TimeUnit.SECONDS));
    contentProvider.close();
    assertTrue(clientLatch.await(5, TimeUnit.SECONDS));
}

Example 14 with AsyncContext

use of javax.servlet.AsyncContext in project jetty.project by eclipse.

the class AsyncIOServletTest method testAsyncWriteThrows.

private void testAsyncWriteThrows(Throwable throwable) throws Exception {
    CountDownLatch latch = new CountDownLatch(1);
    start(new HttpServlet() {

        @Override
        protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            assertScope();
            AsyncContext asyncContext = request.startAsync(request, response);
            response.getOutputStream().setWriteListener(new WriteListener() {

                @Override
                public void onWritePossible() throws IOException {
                    assertScope();
                    if (throwable instanceof RuntimeException)
                        throw (RuntimeException) throwable;
                    if (throwable instanceof Error)
                        throw (Error) throwable;
                    throw new IOException(throwable);
                }

                @Override
                public void onError(Throwable t) {
                    assertScope();
                    latch.countDown();
                    response.setStatus(500);
                    asyncContext.complete();
                    Assert.assertSame(throwable, t);
                }
            });
        }
    });
    ContentResponse response = client.newRequest(newURI()).path(servletPath).timeout(5, TimeUnit.SECONDS).send();
    assertTrue(latch.await(5, TimeUnit.SECONDS));
    assertEquals(HttpStatus.INTERNAL_SERVER_ERROR_500, response.getStatus());
}

Example 15 with AsyncContext

use of javax.servlet.AsyncContext in project jetty.project by eclipse.

the class AsyncIOServletTest method testAsyncReadEarlyEOF.

@Test
public void testAsyncReadEarlyEOF() throws Exception {
    // SSLEngine receives the close alert from the client, and when
    // the server passes the response to encrypt and write, SSLEngine
    // only generates the close alert back, without encrypting the
    // response, so we need to skip the transports over TLS.
    Assume.assumeThat(transport, Matchers.not(Matchers.isOneOf(Transport.HTTPS, Transport.H2)));
    String content = "jetty";
    int responseCode = HttpStatus.NO_CONTENT_204;
    CountDownLatch readLatch = new CountDownLatch(content.length());
    CountDownLatch errorLatch = new CountDownLatch(1);
    start(new HttpServlet() {

        @Override
        protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            AsyncContext asyncContext = request.startAsync();
            ServletInputStream input = request.getInputStream();
            input.setReadListener(new ReadListener() {

                @Override
                public void onDataAvailable() throws IOException {
                    while (input.isReady() && !input.isFinished()) {
                        int read = input.read();
                        // System.err.printf("%x%n", read);
                        readLatch.countDown();
                    }
                }

                @Override
                public void onAllDataRead() throws IOException {
                }

                @Override
                public void onError(Throwable x) {
                    response.setStatus(responseCode);
                    asyncContext.complete();
                    errorLatch.countDown();
                }
            });
        }
    });
    CountDownLatch responseLatch = new CountDownLatch(1);
    DeferredContentProvider contentProvider = new DeferredContentProvider();
    contentProvider.offer(ByteBuffer.wrap(content.getBytes(StandardCharsets.UTF_8)));
    org.eclipse.jetty.client.api.Request request = client.newRequest(newURI()).method(HttpMethod.POST).path(servletPath).content(contentProvider).onResponseSuccess(response -> responseLatch.countDown());
    Destination destination = client.getDestination(getScheme(), "localhost", connector.getLocalPort());
    FuturePromise<org.eclipse.jetty.client.api.Connection> promise = new FuturePromise<>();
    destination.newConnection(promise);
    org.eclipse.jetty.client.api.Connection connection = promise.get(5, TimeUnit.SECONDS);
    CountDownLatch clientLatch = new CountDownLatch(1);
    connection.send(request, result -> {
        assertThat(result.getResponse().getStatus(), Matchers.equalTo(responseCode));
        clientLatch.countDown();
    });
    assertTrue(readLatch.await(5, TimeUnit.SECONDS));
    switch(transport) {
        case HTTP:
        case HTTPS:
            ((HttpConnectionOverHTTP) connection).getEndPoint().shutdownOutput();
            break;
        case H2C:
        case H2:
            // In case of HTTP/2, we not only send the request, but also the preface and
            // SETTINGS frames. SETTINGS frame need to be replied, so we want to wait to
            // write the reply before shutting output down, so that the test does not fail.
            Thread.sleep(1000);
            Session session = ((HttpConnectionOverHTTP2) connection).getSession();
            ((HTTP2Session) session).getEndPoint().shutdownOutput();
            break;
        default:
            Assert.fail();
    }
    // Wait for the response to arrive before finishing the request.
    assertTrue(responseLatch.await(5, TimeUnit.SECONDS));
    contentProvider.close();
    assertTrue(errorLatch.await(5, TimeUnit.SECONDS));
    assertTrue(clientLatch.await(5, TimeUnit.SECONDS));
}