| /* |
| * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| import java.io.IOException; |
| import java.net.ServerSocket; |
| import java.net.URI; |
| import jdk.incubator.http.HttpClient; |
| import jdk.incubator.http.HttpRequest; |
| import jdk.incubator.http.HttpResponse; |
| import jdk.incubator.http.HttpTimeoutException; |
| import java.time.Duration; |
| import java.util.concurrent.CompletableFuture; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.LinkedBlockingQueue; |
| import static java.lang.System.out; |
| import static jdk.incubator.http.HttpResponse.BodyHandler.discard; |
| |
| /** |
| * @test |
| * @bug 8178147 |
| * @summary Ensures that small timeouts do not cause hangs due to race conditions |
| * @run main/othervm SmallTimeout |
| */ |
| |
| // To enable logging use. Not enabled by default as it changes the dynamics |
| // of the test. |
| // @run main/othervm -Djdk.httpclient.HttpClient.log=all,frames:all SmallTimeout |
| |
| public class SmallTimeout { |
| |
| static int[] TIMEOUTS = {2, 1, 3, 2, 100, 1}; |
| |
| // A queue for placing timed out requests so that their order can be checked. |
| static LinkedBlockingQueue<HttpRequest> queue = new LinkedBlockingQueue<>(); |
| |
| static volatile boolean error; |
| |
| public static void main(String[] args) throws Exception { |
| HttpClient client = HttpClient.newHttpClient(); |
| |
| try (ServerSocket ss = new ServerSocket(0, 20)) { |
| int port = ss.getLocalPort(); |
| URI uri = new URI("http://127.0.0.1:" + port + "/"); |
| |
| HttpRequest[] requests = new HttpRequest[TIMEOUTS.length]; |
| |
| out.println("--- TESTING Async"); |
| for (int i = 0; i < TIMEOUTS.length; i++) { |
| requests[i] = HttpRequest.newBuilder(uri) |
| .timeout(Duration.ofMillis(TIMEOUTS[i])) |
| .GET() |
| .build(); |
| |
| final HttpRequest req = requests[i]; |
| CompletableFuture<HttpResponse<Object>> response = client |
| .sendAsync(req, discard(null)) |
| .whenComplete((HttpResponse<Object> r, Throwable t) -> { |
| if (r != null) { |
| out.println("Unexpected response: " + r); |
| error = true; |
| } |
| if (t != null) { |
| if (!(t.getCause() instanceof HttpTimeoutException)) { |
| out.println("Wrong exception type:" + t.toString()); |
| Throwable c = t.getCause() == null ? t : t.getCause(); |
| c.printStackTrace(); |
| error = true; |
| } else { |
| out.println("Caught expected timeout: " + t.getCause()); |
| } |
| } |
| if (t == null && r == null) { |
| out.println("Both response and throwable are null!"); |
| error = true; |
| } |
| queue.add(req); |
| }); |
| } |
| System.out.println("All requests submitted. Waiting ..."); |
| |
| checkReturn(requests); |
| |
| if (error) |
| throw new RuntimeException("Failed. Check output"); |
| |
| // Repeat blocking in separate threads. Use queue to wait. |
| out.println("--- TESTING Sync"); |
| |
| // For running blocking response tasks |
| ExecutorService executor = Executors.newCachedThreadPool(); |
| |
| for (int i = 0; i < TIMEOUTS.length; i++) { |
| requests[i] = HttpRequest.newBuilder(uri) |
| .timeout(Duration.ofMillis(TIMEOUTS[i])) |
| .GET() |
| .build(); |
| |
| final HttpRequest req = requests[i]; |
| executor.execute(() -> { |
| try { |
| client.send(req, discard(null)); |
| } catch (HttpTimeoutException e) { |
| out.println("Caught expected timeout: " + e); |
| queue.offer(req); |
| } catch (IOException | InterruptedException ee) { |
| Throwable c = ee.getCause() == null ? ee : ee.getCause(); |
| c.printStackTrace(); |
| error = true; |
| } |
| }); |
| } |
| System.out.println("All requests submitted. Waiting ..."); |
| |
| checkReturn(requests); |
| |
| executor.shutdownNow(); |
| |
| if (error) |
| throw new RuntimeException("Failed. Check output"); |
| |
| } finally { |
| ((ExecutorService) client.executor()).shutdownNow(); |
| } |
| } |
| |
| static void checkReturn(HttpRequest[] requests) throws InterruptedException { |
| // wait for exceptions and check order |
| for (int j = 0; j < TIMEOUTS.length; j++) { |
| HttpRequest req = queue.take(); |
| out.println("Got request from queue " + req + ", order: " + getRequest(req, requests)); |
| } |
| out.println("Return ok"); |
| } |
| |
| /** Returns the index of the request in the array. */ |
| static String getRequest(HttpRequest req, HttpRequest[] requests) { |
| for (int i=0; i<requests.length; i++) { |
| if (req == requests[i]) { |
| return "r" + i; |
| } |
| } |
| throw new AssertionError("Unknown request: " + req); |
| } |
| } |