696 lines
29 KiB
Java
696 lines
29 KiB
Java
/*
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* Copyright (c) 2020, 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8245462 8229822 8254786 8297075 8297149 8298340 8302635
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* @summary Tests cancelling the request.
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* @library /test/lib /test/jdk/java/net/httpclient/lib
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* @key randomness
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* @build jdk.httpclient.test.lib.common.HttpServerAdapters jdk.test.lib.net.SimpleSSLContext
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* ReferenceTracker CancelRequestTest
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* @run testng/othervm -Djdk.internal.httpclient.debug=true
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* -Djdk.httpclient.enableAllMethodRetry=true
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* CancelRequestTest
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*/
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// * -Dseed=3582896013206826205L
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// * -Dseed=5784221742235559231L
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import jdk.internal.net.http.common.OperationTrackers.Tracker;
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import jdk.test.lib.RandomFactory;
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import jdk.test.lib.net.SimpleSSLContext;
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import org.testng.ITestContext;
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import org.testng.ITestResult;
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import org.testng.SkipException;
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import org.testng.annotations.AfterClass;
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import org.testng.annotations.AfterTest;
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import org.testng.annotations.BeforeMethod;
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import org.testng.annotations.BeforeTest;
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import org.testng.annotations.DataProvider;
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import org.testng.annotations.Test;
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import javax.net.ssl.SSLContext;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.lang.ref.Reference;
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import java.net.URI;
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import java.net.http.HttpClient;
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import java.net.http.HttpConnectTimeoutException;
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import java.net.http.HttpRequest;
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import java.net.http.HttpResponse;
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import java.net.http.HttpResponse.BodyHandler;
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import java.net.http.HttpResponse.BodyHandlers;
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import java.util.Arrays;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Random;
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import java.util.concurrent.CancellationException;
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import java.util.concurrent.CompletableFuture;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.ConcurrentMap;
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import java.util.concurrent.CountDownLatch;
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import java.util.concurrent.ExecutionException;
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import java.util.concurrent.Executor;
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import java.util.concurrent.Executors;
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import java.util.concurrent.atomic.AtomicLong;
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import java.util.concurrent.atomic.AtomicReference;
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import java.util.stream.Collectors;
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import jdk.httpclient.test.lib.common.HttpServerAdapters;
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import static java.lang.System.out;
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import static java.lang.System.err;
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import static java.net.http.HttpClient.Version.HTTP_1_1;
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import static java.net.http.HttpClient.Version.HTTP_2;
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import static java.nio.charset.StandardCharsets.UTF_8;
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import static org.testng.Assert.assertEquals;
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import static org.testng.Assert.assertFalse;
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import static org.testng.Assert.assertTrue;
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public class CancelRequestTest implements HttpServerAdapters {
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private static final Random random = RandomFactory.getRandom();
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SSLContext sslContext;
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HttpTestServer httpTestServer; // HTTP/1.1 [ 4 servers ]
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HttpTestServer httpsTestServer; // HTTPS/1.1
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HttpTestServer http2TestServer; // HTTP/2 ( h2c )
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HttpTestServer https2TestServer; // HTTP/2 ( h2 )
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String httpURI;
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String httpsURI;
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String http2URI;
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String https2URI;
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static final long SERVER_LATENCY = 75;
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static final int MAX_CLIENT_DELAY = 75;
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static final int ITERATION_COUNT = 3;
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// a shared executor helps reduce the amount of threads created by the test
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static final Executor executor = new TestExecutor(Executors.newCachedThreadPool());
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static final ConcurrentMap<String, Throwable> FAILURES = new ConcurrentHashMap<>();
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static volatile boolean tasksFailed;
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static final AtomicLong serverCount = new AtomicLong();
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static final AtomicLong clientCount = new AtomicLong();
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static final long start = System.nanoTime();
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public static String now() {
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long now = System.nanoTime() - start;
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long secs = now / 1000_000_000;
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long mill = (now % 1000_000_000) / 1000_000;
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long nan = now % 1000_000;
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return String.format("[%d s, %d ms, %d ns] ", secs, mill, nan);
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}
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final ReferenceTracker TRACKER = ReferenceTracker.INSTANCE;
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private volatile HttpClient sharedClient;
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static class TestExecutor implements Executor {
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final AtomicLong tasks = new AtomicLong();
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Executor executor;
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TestExecutor(Executor executor) {
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this.executor = executor;
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}
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@Override
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public void execute(Runnable command) {
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long id = tasks.incrementAndGet();
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executor.execute(() -> {
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try {
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command.run();
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} catch (Throwable t) {
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tasksFailed = true;
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System.out.printf(now() + "Task %s failed: %s%n", id, t);
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System.err.printf(now() + "Task %s failed: %s%n", id, t);
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FAILURES.putIfAbsent("Task " + id, t);
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throw t;
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}
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});
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}
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}
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protected boolean stopAfterFirstFailure() {
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return Boolean.getBoolean("jdk.internal.httpclient.debug");
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}
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final AtomicReference<SkipException> skiptests = new AtomicReference<>();
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void checkSkip() {
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var skip = skiptests.get();
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if (skip != null) throw skip;
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}
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static String name(ITestResult result) {
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var params = result.getParameters();
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return result.getName()
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+ (params == null ? "()" : Arrays.toString(result.getParameters()));
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}
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@BeforeMethod
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void beforeMethod(ITestContext context) {
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if (stopAfterFirstFailure() && context.getFailedTests().size() > 0) {
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if (skiptests.get() == null) {
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SkipException skip = new SkipException("some tests failed");
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skip.setStackTrace(new StackTraceElement[0]);
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skiptests.compareAndSet(null, skip);
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}
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}
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}
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@AfterClass
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static void printFailedTests(ITestContext context) {
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out.println("\n=========================");
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var failed = context.getFailedTests().getAllResults().stream()
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.collect(Collectors.toMap(CancelRequestTest::name, ITestResult::getThrowable));
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FAILURES.putAll(failed);
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try {
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out.printf("%n%sCreated %d servers and %d clients%n",
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now(), serverCount.get(), clientCount.get());
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if (FAILURES.isEmpty()) return;
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out.println("Failed tests: ");
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FAILURES.forEach((key, value) -> {
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out.printf("\t%s: %s%n", key, value);
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value.printStackTrace(out);
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});
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if (tasksFailed) {
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System.out.println("WARNING: Some tasks failed");
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}
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} finally {
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out.println("\n=========================\n");
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}
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}
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private String[] uris() {
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return new String[] {
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httpURI,
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httpsURI,
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http2URI,
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https2URI,
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};
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}
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@DataProvider(name = "asyncurls")
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public Object[][] asyncurls() {
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String[] uris = uris();
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Object[][] result = new Object[uris.length * 2 * 3][];
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//Object[][] result = new Object[uris.length][];
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int i = 0;
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for (boolean mayInterrupt : List.of(true, false, true)) {
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for (boolean sameClient : List.of(false, true)) {
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//if (!sameClient) continue;
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for (String uri : uris()) {
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String path = sameClient ? "same" : "new";
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path = path + (mayInterrupt ? "/interrupt" : "/nointerrupt");
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result[i++] = new Object[]{uri + path, sameClient, mayInterrupt};
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}
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}
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}
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assert i == uris.length * 2 * 3;
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// assert i == uris.length ;
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return result;
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}
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@DataProvider(name = "urls")
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public Object[][] alltests() {
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String[] uris = uris();
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Object[][] result = new Object[uris.length * 2][];
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//Object[][] result = new Object[uris.length][];
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int i = 0;
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for (boolean sameClient : List.of(false, true)) {
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//if (!sameClient) continue;
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for (String uri : uris()) {
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String path = sameClient ? "same" : "new";
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path = path + "/interruptThread";
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result[i++] = new Object[]{uri + path, sameClient};
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}
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}
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assert i == uris.length * 2;
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// assert i == uris.length ;
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return result;
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}
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private HttpClient makeNewClient() {
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clientCount.incrementAndGet();
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return TRACKER.track(HttpClient.newBuilder()
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.proxy(HttpClient.Builder.NO_PROXY)
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.executor(executor)
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.sslContext(sslContext)
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.build());
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}
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HttpClient newHttpClient(boolean share) {
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if (!share) return makeNewClient();
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HttpClient shared = sharedClient;
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if (shared != null) return shared;
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synchronized (this) {
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shared = sharedClient;
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if (shared == null) {
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shared = sharedClient = makeNewClient();
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}
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return shared;
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}
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}
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final static String BODY = "Some string | that ? can | be split ? several | ways.";
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// should accept SSLHandshakeException because of the connectionAborter
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// with http/2 and should accept Stream 5 cancelled.
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// => also examine in what measure we should always
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// rewrap in "Request Cancelled" when the multi exchange was aborted...
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private static boolean isCancelled(Throwable t) {
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while (t instanceof ExecutionException) t = t.getCause();
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if (t instanceof CancellationException) return true;
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if (t instanceof IOException) return String.valueOf(t).contains("Request cancelled");
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out.println("Not a cancellation exception: " + t);
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t.printStackTrace(out);
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return false;
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}
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private static void delay() {
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int delay = random.nextInt(MAX_CLIENT_DELAY);
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try {
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System.out.println("client delay: " + delay);
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Thread.sleep(delay);
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} catch (InterruptedException x) {
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out.println("Unexpected exception: " + x);
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}
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}
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@Test(dataProvider = "asyncurls")
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public void testGetSendAsync(String uri, boolean sameClient, boolean mayInterruptIfRunning)
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throws Exception {
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checkSkip();
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HttpClient client = null;
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uri = uri + "/get";
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out.printf("%n%s testGetSendAsync(%s, %b, %b)%n", now(), uri, sameClient, mayInterruptIfRunning);
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for (int i=0; i< ITERATION_COUNT; i++) {
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if (!sameClient || client == null)
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client = newHttpClient(sameClient);
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Tracker tracker = TRACKER.getTracker(client);
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HttpRequest req = HttpRequest.newBuilder(URI.create(uri))
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.GET()
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.build();
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BodyHandler<String> handler = BodyHandlers.ofString();
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CountDownLatch latch = new CountDownLatch(1);
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CompletableFuture<HttpResponse<String>> response = client.sendAsync(req, handler);
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var cf1 = response.whenComplete((r,t) -> System.out.println(t));
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CompletableFuture<HttpResponse<String>> cf2 = cf1.whenComplete((r,t) -> latch.countDown());
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out.println("response: " + response);
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out.println("cf1: " + cf1);
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out.println("cf2: " + cf2);
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delay();
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cf1.cancel(mayInterruptIfRunning);
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out.println("response after cancel: " + response);
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out.println("cf1 after cancel: " + cf1);
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out.println("cf2 after cancel: " + cf2);
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try {
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String body = cf2.get().body();
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assertEquals(body, String.join("", BODY.split("\\|")));
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throw new AssertionError("Expected CancellationException not received");
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} catch (ExecutionException x) {
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out.println("Got expected exception: " + x);
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assertTrue(isCancelled(x));
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}
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// Cancelling the request may cause an IOException instead...
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boolean hasCancellationException = false;
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try {
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cf1.get();
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} catch (CancellationException | ExecutionException x) {
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out.println("Got expected exception: " + x);
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assertTrue(isCancelled(x));
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hasCancellationException = x instanceof CancellationException;
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}
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// because it's cf1 that was cancelled then response might not have
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// completed yet - so wait for it here...
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try {
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String body = response.get().body();
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assertEquals(body, String.join("", BODY.split("\\|")));
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if (mayInterruptIfRunning) {
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// well actually - this could happen... In which case we'll need to
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// increase the latency in the server handler...
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throw new AssertionError("Expected Exception not received");
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}
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} catch (ExecutionException x) {
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assertTrue(response.isDone());
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Throwable wrapped = x.getCause();
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Throwable cause = wrapped;
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if (mayInterruptIfRunning) {
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assertTrue(CancellationException.class.isAssignableFrom(wrapped.getClass()),
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"Unexpected exception: " + wrapped);
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cause = wrapped.getCause();
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out.println("CancellationException cause: " + x);
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if (cause instanceof HttpConnectTimeoutException) {
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cause.printStackTrace(out);
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throw new RuntimeException("Unexpected timeout exception", cause);
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}
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}
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if (!IOException.class.isInstance(cause)) {
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out.println("Unexpected cause: " + cause.getClass());
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cause.printStackTrace(out);
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}
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assertTrue(IOException.class.isAssignableFrom(cause.getClass()));
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if (mayInterruptIfRunning) {
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out.println("Got expected exception: " + wrapped);
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out.println("\tcause: " + cause);
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} else {
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out.println("Unexpected exception: " + wrapped);
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wrapped.printStackTrace(out);
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throw x;
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}
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}
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assertTrue(response.isDone());
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assertFalse(response.isCancelled());
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assertEquals(cf1.isCancelled(), hasCancellationException);
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assertTrue(cf2.isDone());
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assertFalse(cf2.isCancelled());
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assertEquals(latch.getCount(), 0);
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var error = TRACKER.check(tracker, 1000,
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(t) -> t.getOutstandingOperations() > 0 || t.getOutstandingSubscribers() > 0,
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"subscribers for testGetSendAsync(%s)\n\t step [%s]".formatted(req.uri(), i),
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false);
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Reference.reachabilityFence(client);
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if (error != null) throw error;
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}
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assert client != null;
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if (!sameClient) client.close();
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}
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@Test(dataProvider = "asyncurls")
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public void testPostSendAsync(String uri, boolean sameClient, boolean mayInterruptIfRunning)
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throws Exception {
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checkSkip();
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uri = uri + "/post";
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HttpClient client = null;
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out.printf("%n%s testPostSendAsync(%s, %b, %b)%n", now(), uri, sameClient, mayInterruptIfRunning);
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for (int i=0; i< ITERATION_COUNT; i++) {
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if (!sameClient || client == null)
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client = newHttpClient(sameClient);
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Tracker tracker = TRACKER.getTracker(client);
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CompletableFuture<CompletableFuture<?>> cancelFuture = new CompletableFuture<>();
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Iterable<byte[]> iterable = new Iterable<>() {
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@Override
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public Iterator<byte[]> iterator() {
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// this is dangerous
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out.println("waiting for completion on: " + cancelFuture);
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boolean async = random.nextBoolean();
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Runnable cancel = () -> {
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out.println("Cancelling from " + Thread.currentThread());
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var cf1 = cancelFuture.join();
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cf1.cancel(mayInterruptIfRunning);
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out.println("cancelled " + cf1);
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};
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if (async) executor.execute(cancel);
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else cancel.run();
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return List.of(BODY.getBytes(UTF_8)).iterator();
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}
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};
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HttpRequest req = HttpRequest.newBuilder(URI.create(uri))
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.POST(HttpRequest.BodyPublishers.ofByteArrays(iterable))
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.build();
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BodyHandler<String> handler = BodyHandlers.ofString();
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CountDownLatch latch = new CountDownLatch(1);
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CompletableFuture<HttpResponse<String>> response = client.sendAsync(req, handler);
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var cf1 = response.whenComplete((r,t) -> System.out.println(t));
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CompletableFuture<HttpResponse<String>> cf2 = cf1.whenComplete((r,t) -> latch.countDown());
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out.println("response: " + response);
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out.println("cf1: " + cf1);
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out.println("cf2: " + cf2);
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cancelFuture.complete(cf1);
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out.println("response after cancel: " + response);
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out.println("cf1 after cancel: " + cf1);
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out.println("cf2 after cancel: " + cf2);
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try {
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String body = cf2.get().body();
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assertEquals(body, String.join("", BODY.split("\\|")));
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throw new AssertionError("Expected CancellationException not received");
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} catch (ExecutionException x) {
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out.println("Got expected exception: " + x);
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assertTrue(isCancelled(x));
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}
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// Cancelling the request may cause an IOException instead...
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boolean hasCancellationException = false;
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try {
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cf1.get();
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} catch (CancellationException | ExecutionException x) {
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out.println("Got expected exception: " + x);
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assertTrue(isCancelled(x));
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hasCancellationException = x instanceof CancellationException;
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}
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// because it's cf1 that was cancelled then response might not have
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// completed yet - so wait for it here...
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try {
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String body = response.get().body();
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assertEquals(body, String.join("", BODY.split("\\|")));
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if (mayInterruptIfRunning) {
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// well actually - this could happen... In which case we'll need to
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// increase the latency in the server handler...
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throw new AssertionError("Expected Exception not received");
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}
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} catch (ExecutionException x) {
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assertTrue(response.isDone());
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Throwable wrapped = x.getCause();
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assertTrue(CancellationException.class.isAssignableFrom(wrapped.getClass()));
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Throwable cause = wrapped.getCause();
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assertTrue(IOException.class.isAssignableFrom(cause.getClass()));
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if (cause instanceof HttpConnectTimeoutException) {
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cause.printStackTrace(out);
|
|
throw new RuntimeException("Unexpected timeout exception", cause);
|
|
}
|
|
if (mayInterruptIfRunning) {
|
|
out.println("Got expected exception: " + wrapped);
|
|
out.println("\tcause: " + cause);
|
|
} else {
|
|
out.println("Unexpected exception: " + wrapped);
|
|
wrapped.printStackTrace(out);
|
|
throw x;
|
|
}
|
|
}
|
|
|
|
assertTrue(response.isDone());
|
|
assertFalse(response.isCancelled());
|
|
assertEquals(cf1.isCancelled(), hasCancellationException);
|
|
assertTrue(cf2.isDone());
|
|
assertFalse(cf2.isCancelled());
|
|
assertEquals(latch.getCount(), 0);
|
|
|
|
var error = TRACKER.check(tracker, 1000,
|
|
(t) -> t.getOutstandingOperations() > 0 || t.getOutstandingSubscribers() > 0,
|
|
"subscribers for testPostSendAsync(%s)\n\t step [%s]".formatted(req.uri(), i),
|
|
false);
|
|
Reference.reachabilityFence(client);
|
|
if (error != null) throw error;
|
|
}
|
|
assert client != null;
|
|
if (!sameClient) client.close();
|
|
}
|
|
|
|
@Test(dataProvider = "urls")
|
|
public void testPostInterrupt(String uri, boolean sameClient)
|
|
throws Exception {
|
|
checkSkip();
|
|
HttpClient client = null;
|
|
out.printf("%n%s testPostInterrupt(%s, %b)%n", now(), uri, sameClient);
|
|
for (int i=0; i< ITERATION_COUNT; i++) {
|
|
if (!sameClient || client == null)
|
|
client = newHttpClient(sameClient);
|
|
Tracker tracker = TRACKER.getTracker(client);
|
|
|
|
Thread main = Thread.currentThread();
|
|
CompletableFuture<Thread> interruptingThread = new CompletableFuture<>();
|
|
var uriStr = uri + "/post/req=" + i;
|
|
Runnable interrupt = () -> {
|
|
Thread current = Thread.currentThread();
|
|
out.printf("%s Interrupting main from: %s (%s)%n", now(), current, uriStr);
|
|
err.printf("%s Interrupting main from: %s (%s)%n", now(), current, uriStr);
|
|
interruptingThread.complete(current);
|
|
main.interrupt();
|
|
};
|
|
Iterable<byte[]> iterable = () -> {
|
|
var async = random.nextBoolean();
|
|
if (async) executor.execute(interrupt);
|
|
else interrupt.run();
|
|
return List.of(BODY.getBytes(UTF_8)).iterator();
|
|
};
|
|
|
|
HttpRequest req = HttpRequest.newBuilder(URI.create(uriStr))
|
|
.POST(HttpRequest.BodyPublishers.ofByteArrays(iterable))
|
|
.build();
|
|
String body = null;
|
|
Exception failed = null;
|
|
try {
|
|
out.println("Sending: " + uriStr);
|
|
body = client.send(req, BodyHandlers.ofString()).body();
|
|
} catch (Exception x) {
|
|
failed = x;
|
|
}
|
|
out.println(uriStr + ": got result or exception");
|
|
if (failed instanceof InterruptedException) {
|
|
out.println(uriStr + ": Got expected exception: " + failed);
|
|
} else if (failed instanceof IOException) {
|
|
out.println(uriStr + ": got IOException: " + failed);
|
|
// that could be OK if the main thread was interrupted
|
|
// from the main thread: the interrupt status could have
|
|
// been caught by writing to the socket from the main
|
|
// thread.
|
|
if (interruptingThread.isDone() && interruptingThread.get() == main) {
|
|
out.println(uriStr + ": Accepting IOException: " + failed);
|
|
failed.printStackTrace(out);
|
|
} else {
|
|
out.println(uriStr + ": unexpected exception: " + failed);
|
|
throw failed;
|
|
}
|
|
} else if (failed != null) {
|
|
out.println(uriStr + ": unexpected exception: " + failed);
|
|
throw failed;
|
|
} else {
|
|
assert failed == null;
|
|
out.println(uriStr + ": got body: " + body);
|
|
assertEquals(body, String.join("", BODY.split("\\|")));
|
|
}
|
|
out.println("next iteration");
|
|
|
|
var error = TRACKER.check(tracker, 2000,
|
|
(t) -> t.getOutstandingOperations() > 0 || t.getOutstandingSubscribers() > 0,
|
|
"subscribers for testPostInterrupt(%s)\n\t step [%s]".formatted(req.uri(), i),
|
|
false);
|
|
Reference.reachabilityFence(client);
|
|
if (error != null) throw error;
|
|
}
|
|
assert client != null;
|
|
if (!sameClient) client.close();
|
|
}
|
|
|
|
|
|
|
|
@BeforeTest
|
|
public void setup() throws Exception {
|
|
sslContext = new SimpleSSLContext().get();
|
|
if (sslContext == null)
|
|
throw new AssertionError("Unexpected null sslContext");
|
|
|
|
// HTTP/1.1
|
|
HttpTestHandler h1_chunkHandler = new HTTPSlowHandler();
|
|
httpTestServer = HttpTestServer.create(HTTP_1_1);
|
|
httpTestServer.addHandler(h1_chunkHandler, "/http1/x/");
|
|
httpURI = "http://" + httpTestServer.serverAuthority() + "/http1/x/";
|
|
|
|
httpsTestServer = HttpTestServer.create(HTTP_1_1, sslContext);
|
|
httpsTestServer.addHandler(h1_chunkHandler, "/https1/x/");
|
|
httpsURI = "https://" + httpsTestServer.serverAuthority() + "/https1/x/";
|
|
|
|
// HTTP/2
|
|
HttpTestHandler h2_chunkedHandler = new HTTPSlowHandler();
|
|
|
|
http2TestServer = HttpTestServer.create(HTTP_2);
|
|
http2TestServer.addHandler(h2_chunkedHandler, "/http2/x/");
|
|
http2URI = "http://" + http2TestServer.serverAuthority() + "/http2/x/";
|
|
|
|
https2TestServer = HttpTestServer.create(HTTP_2, sslContext);
|
|
https2TestServer.addHandler(h2_chunkedHandler, "/https2/x/");
|
|
https2URI = "https://" + https2TestServer.serverAuthority() + "/https2/x/";
|
|
|
|
serverCount.addAndGet(4);
|
|
httpTestServer.start();
|
|
httpsTestServer.start();
|
|
http2TestServer.start();
|
|
https2TestServer.start();
|
|
}
|
|
|
|
@AfterTest
|
|
public void teardown() throws Exception {
|
|
String sharedClientName =
|
|
sharedClient == null ? null : sharedClient.toString();
|
|
sharedClient = null;
|
|
Thread.sleep(100);
|
|
AssertionError fail = TRACKER.check(500);
|
|
try {
|
|
httpTestServer.stop();
|
|
httpsTestServer.stop();
|
|
http2TestServer.stop();
|
|
https2TestServer.stop();
|
|
} finally {
|
|
if (fail != null) {
|
|
if (sharedClientName != null) {
|
|
System.err.println("Shared client name is: " + sharedClientName);
|
|
}
|
|
throw fail;
|
|
}
|
|
}
|
|
}
|
|
|
|
private static boolean isThreadInterrupt(HttpTestExchange t) {
|
|
return t.getRequestURI().getPath().contains("/interruptThread");
|
|
}
|
|
|
|
/**
|
|
* A handler that slowly sends back a body to give time for the
|
|
* the request to get cancelled before the body is fully received.
|
|
*/
|
|
static class HTTPSlowHandler implements HttpTestHandler {
|
|
@Override
|
|
public void handle(HttpTestExchange t) throws IOException {
|
|
try {
|
|
out.println("HTTPSlowHandler received request to " + t.getRequestURI());
|
|
System.err.println("HTTPSlowHandler received request to " + t.getRequestURI());
|
|
|
|
boolean isThreadInterrupt = isThreadInterrupt(t);
|
|
byte[] req;
|
|
try (InputStream is = t.getRequestBody()) {
|
|
req = is.readAllBytes();
|
|
}
|
|
t.sendResponseHeaders(200, -1); // chunked/variable
|
|
try (OutputStream os = t.getResponseBody()) {
|
|
// lets split the response in several chunks...
|
|
String msg = (req != null && req.length != 0)
|
|
? new String(req, UTF_8)
|
|
: BODY;
|
|
String[] str = msg.split("\\|");
|
|
for (var s : str) {
|
|
req = s.getBytes(UTF_8);
|
|
os.write(req);
|
|
os.flush();
|
|
try {
|
|
Thread.sleep(SERVER_LATENCY);
|
|
} catch (InterruptedException x) {
|
|
// OK
|
|
}
|
|
out.printf("Server wrote %d bytes%n", req.length);
|
|
}
|
|
}
|
|
} catch (Throwable e) {
|
|
out.println("HTTPSlowHandler: unexpected exception: " + e);
|
|
e.printStackTrace();
|
|
throw e;
|
|
} finally {
|
|
out.printf("HTTPSlowHandler reply sent: %s%n", t.getRequestURI());
|
|
System.err.printf("HTTPSlowHandler reply sent: %s%n", t.getRequestURI());
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|