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609 lines
28 KiB
Java
609 lines
28 KiB
Java
/*
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* Copyright (c) 2023, 2026, 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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* @library /test/lib /test/jdk/java/net/httpclient/lib
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* @build jdk.test.lib.net.SimpleSSLContext jdk.httpclient.test.lib.http2.Http2TestServer
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* @run junit/othervm
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* -Djdk.internal.httpclient.debug=true
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* -Djdk.httpclient.HttpClient.log=errors,requests,responses,trace
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* -Djdk.httpclient.http3.maxConcurrentPushStreams=45
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* H3ServerPushCancel
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* @summary This test checks that the client deals correctly with a
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* CANCEL_PUSH frame sent by the server
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*/
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import java.io.ByteArrayInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InterruptedIOException;
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import java.io.OutputStream;
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import java.io.PrintStream;
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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.HttpClient.Builder;
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import java.net.http.HttpHeaders;
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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.net.http.HttpResponse.PushPromiseHandler;
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import java.net.http.HttpResponse.PushPromiseHandler.PushId;
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import java.net.http.HttpResponse.PushPromiseHandler.PushId.Http3PushId;
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import java.nio.channels.ClosedChannelException;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Map;
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import java.util.Objects;
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import java.util.Set;
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import java.util.concurrent.CompletableFuture;
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import java.util.concurrent.CompletionException;
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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.CopyOnWriteArrayList;
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import java.util.concurrent.CountDownLatch;
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import java.util.concurrent.atomic.AtomicInteger;
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import java.util.concurrent.locks.ReentrantLock;
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import java.util.function.Function;
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import java.util.function.Supplier;
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import jdk.httpclient.test.lib.common.HttpServerAdapters;
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import jdk.internal.net.http.common.Utils;
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import jdk.test.lib.net.SimpleSSLContext;
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import static java.net.http.HttpClient.Version.HTTP_2;
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import static java.net.http.HttpClient.Version.HTTP_3;
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import static java.net.http.HttpOption.Http3DiscoveryMode.ALT_SVC;
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import static java.net.http.HttpOption.Http3DiscoveryMode.ANY;
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import static java.net.http.HttpOption.H3_DISCOVERY;
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import static java.nio.charset.StandardCharsets.UTF_8;
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import org.junit.jupiter.api.AfterAll;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import static org.junit.jupiter.api.Assertions.assertNotNull;
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import static org.junit.jupiter.api.Assertions.assertNull;
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import static org.junit.jupiter.api.Assertions.assertTrue;
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import org.junit.jupiter.api.BeforeAll;
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import org.junit.jupiter.api.Test;
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public class H3ServerPushCancel implements HttpServerAdapters {
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// dummy hack to prevent the IDE complaining that calling
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// println will throw NPE
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static final PrintStream err = System.err;
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static final PrintStream out = System.out;
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static final Map<String,String> PUSH_PROMISES = Map.of(
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"/x/y/z/1", "the first push promise body",
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"/x/y/z/2", "the second push promise body",
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"/x/y/z/3", "the third push promise body",
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"/x/y/z/4", "the fourth push promise body",
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"/x/y/z/5", "the fifth push promise body",
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"/x/y/z/6", "the sixth push promise body",
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"/x/y/z/7", "the seventh push promise body",
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"/x/y/z/8", "the eight push promise body",
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"/x/y/z/9", "the ninth push promise body"
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);
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static final String MAIN_RESPONSE_BODY = "the main response body";
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static final int REQUESTS = 5;
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private static HttpTestServer server;
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private static URI uri;
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private static URI headURI;
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private static ServerPushHandler pushHandler;
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@BeforeAll
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public static void setup() throws Exception {
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server = HttpTestServer.create(ANY, SimpleSSLContext.findSSLContext());
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pushHandler = new ServerPushHandler(MAIN_RESPONSE_BODY, PUSH_PROMISES);
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server.addHandler(pushHandler, "/push/");
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server.addHandler(new HttpHeadOrGetHandler(), "/head/");
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server.start();
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err.println("Server listening on port " + server.serverAuthority());
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uri = new URI("https://" + server.serverAuthority() + "/push/a/b/c");
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headURI = new URI("https://" + server.serverAuthority() + "/head/x");
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}
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@AfterAll
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public static void teardown() {
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server.stop();
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}
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static <T> HttpResponse<T> assert200ResponseCode(HttpResponse<T> response) {
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assertEquals(200, response.statusCode());
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assertEquals(HTTP_3, response.version());
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return response;
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}
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private void sendHeadRequest(HttpClient client) throws IOException, InterruptedException {
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HttpRequest headRequest = HttpRequest.newBuilder(headURI)
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.HEAD().version(HTTP_2).build();
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var headResponse = client.send(headRequest, BodyHandlers.ofString());
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assertEquals(200, headResponse.statusCode());
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assertEquals(HTTP_2, headResponse.version());
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}
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static final class TestPushPromiseHandler<T> implements PushPromiseHandler<T> {
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record NotifiedPromise(PushId pushId, HttpRequest initiatingRequest) {}
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final Map<HttpRequest, PushId> requestToPushId = new ConcurrentHashMap<>();
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final Map<PushId, HttpRequest> pushIdToRequest = new ConcurrentHashMap<>();
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final List<AssertionError> errors = new CopyOnWriteArrayList<>();
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final List<NotifiedPromise> notified = new CopyOnWriteArrayList<>();
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final ConcurrentMap<HttpRequest, CompletableFuture<HttpResponse<T>>> promises
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= new ConcurrentHashMap<>();
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final Supplier<BodyHandler<T>> bodyHandlerSupplier;
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final PushPromiseHandler<T> pph;
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TestPushPromiseHandler(Supplier<BodyHandler<T>> bodyHandlerSupplier) {
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this.bodyHandlerSupplier = bodyHandlerSupplier;
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this.pph = PushPromiseHandler.of((r) -> bodyHandlerSupplier.get(), promises);
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}
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@Override
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public void applyPushPromise(HttpRequest initiatingRequest,
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HttpRequest pushPromiseRequest,
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Function<BodyHandler<T>, CompletableFuture<HttpResponse<T>>> acceptor) {
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errors.add(new AssertionError("no pushID provided for: " + pushPromiseRequest));
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}
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@Override
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public void notifyAdditionalPromise(HttpRequest initiatingRequest, PushId pushid) {
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notified.add(new NotifiedPromise(pushid, initiatingRequest));
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out.println("notifyPushPromise: pushId=" + pushid);
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pph.notifyAdditionalPromise(initiatingRequest, pushid);
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}
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@Override
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public void applyPushPromise(HttpRequest initiatingRequest,
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HttpRequest pushPromiseRequest,
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PushId pushid,
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Function<BodyHandler<T>, CompletableFuture<HttpResponse<T>>> acceptor) {
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out.println("applyPushPromise: " + pushPromiseRequest + ", pushId=" + pushid);
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requestToPushId.putIfAbsent(pushPromiseRequest, pushid);
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if (pushIdToRequest.putIfAbsent(pushid, pushPromiseRequest) != null) {
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errors.add(new AssertionError("pushId already used: " + pushid));
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}
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pph.applyPushPromise(initiatingRequest, pushPromiseRequest, pushid, acceptor);
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}
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}
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<T> T join(CompletableFuture<T> cf) {
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try {
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return cf.join();
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} catch (CompletionException c) {
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throw new AssertionError(c.getCause());
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} catch (Throwable t) {
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throw new AssertionError(t);
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}
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}
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String describeBody(CompletableFuture<HttpResponse<String>> cf) {
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return cf.thenApply(HttpResponse::body).exceptionally(Throwable::toString).join();
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}
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String describeKey(TestPushPromiseHandler<String> pph, HttpRequest request) {
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if (PUSH_PROMISES.containsKey(request.uri().getPath())) {
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var pushId = pph.requestToPushId.get(request);
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if (pushId instanceof Http3PushId h3id) {
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return "[push=%s]".formatted(h3id.pushId()) + request;
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} else return "[push=%s]".formatted(pushId) + request;
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} else {
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return "[main] " + request;
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}
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}
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@Test
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public void testServerCancelPushes() throws Exception {
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int maxPushes = Utils.getIntegerProperty("jdk.httpclient.http3.maxConcurrentPushStreams", -1);
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out.println("maxPushes: " + maxPushes);
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assertTrue(maxPushes > 0);
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try (HttpClient client = newClientBuilderForH3()
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.proxy(Builder.NO_PROXY)
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.version(HTTP_3)
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.sslContext(SimpleSSLContext.findSSLContext())
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.build()) {
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sendHeadRequest(client);
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// Send with promise handler
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TestPushPromiseHandler<String> custom = new TestPushPromiseHandler<>(BodyHandlers::ofString);
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var promises = custom.promises;
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Set<PushId> expectedPushIds = new HashSet<>();
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for (int j=0; j < 2; j++) {
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if (j == 0) out.println("\ntestCancel: First time around");
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else out.println("\ntestCancel: Second time around: should be a new connection");
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// now make sure there's an HTTP/3 connection
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client.send(HttpRequest.newBuilder(headURI).version(HTTP_3)
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.setOption(H3_DISCOVERY, ALT_SVC)
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.HEAD().build(), BodyHandlers.discarding());
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int waitForPushId;
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List<CompletableFuture<HttpResponse<String>>> responses = new ArrayList<>();
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for (int i = 0; i < REQUESTS; i++) {
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waitForPushId = Math.min(PUSH_PROMISES.size(), maxPushes) + 1;
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CompletableFuture<HttpResponse<String>> main = client.sendAsync(
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HttpRequest.newBuilder(uri.resolve("?i=%s,j=%s".formatted(i, j)))
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.header("X-WaitForPushId", String.valueOf(waitForPushId))
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.build(),
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BodyHandlers.ofString(),
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custom);
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responses.add(main);
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}
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join(CompletableFuture.allOf(responses.toArray(CompletableFuture<?>[]::new)));
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responses.forEach(cf -> {
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var main = join(cf);
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var old = promises.put(main.request(), CompletableFuture.completedFuture(main));
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assertNull(old, "unexpected mapping for: " + old);
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});
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promises.forEach((key, value) -> out.println(describeKey(custom, key) + ":" + describeBody(value)));
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promises.forEach((request, value) -> {
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if (PUSH_PROMISES.containsKey(request.uri().getPath())) {
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var pushId = custom.requestToPushId.get(request);
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assertNotNull(pushId, "no pushId for " + request);
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if (pushId instanceof Http3PushId h3id) {
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long id = h3id.pushId();
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long mod = id % PUSH_PROMISES.size();
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if (mod > 0 && mod < 4) {
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// should have been cancelled by server, so
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// we should have an IO for these
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Throwable ex = value.exceptionNow();
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var msg = ex.getMessage();
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var expected = "Push promise cancelled: %s".formatted(id);
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if (!(ex instanceof IOException)) {
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throw new AssertionError(ex);
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} else if (!msg.contains(expected)) {
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throw new AssertionError("Unexpected message: " + msg, ex);
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}
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} else {
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assertEquals(PUSH_PROMISES.get(request.uri().getPath()), join(value).body());
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}
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expectedPushIds.add(pushId);
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} else assertEquals(Http3PushId.class, pushId.getClass());
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} else {
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HttpResponse<String> response = join(value);
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assertEquals(200, response.statusCode());
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assertEquals(MAIN_RESPONSE_BODY, response.body());
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}
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});
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int maxExpectedPushes = Math.min(PUSH_PROMISES.size(), maxPushes);
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int minExpectedPushes = maxExpectedPushes - 3;
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int countpushes = promises.size() - REQUESTS;
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assert countpushes >= 0;
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if (maxExpectedPushes < countpushes || minExpectedPushes > countpushes) {
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throw new AssertionError("unexpected number of pushes %s should be in [%s,%s]"
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.formatted(countpushes, minExpectedPushes, maxExpectedPushes));
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}
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promises.clear();
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custom.requestToPushId.clear();
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// Send with no promise handler
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try {
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client.sendAsync(HttpRequest.newBuilder(uri).build(), BodyHandlers.ofString())
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.thenApply(H3ServerPushCancel::assert200ResponseCode)
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.thenApply(HttpResponse::body)
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.thenAccept(body -> assertEquals(MAIN_RESPONSE_BODY, body))
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.join();
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} catch (CompletionException c) {
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throw new AssertionError(c.getCause());
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}
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assertEquals(0, promises.size());
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// Send with no promise handler, but use pushId bigger than allowed.
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// This should cause the connection to get closed
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long usePushId = maxPushes * 3 + 10;
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try {
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HttpRequest bigger = HttpRequest.newBuilder(uri)
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.header("X-UsePushId", String.valueOf(usePushId))
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.build();
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client.sendAsync(bigger, BodyHandlers.ofString())
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.thenApply(H3ServerPushCancel::assert200ResponseCode)
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.thenApply(HttpResponse::body)
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.thenAccept(body -> assertEquals(MAIN_RESPONSE_BODY, body))
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.join();
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throw new AssertionError("Expected IOException not thrown");
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} catch (CompletionException c) {
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boolean success = false;
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if (c.getCause() instanceof IOException io) {
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if (io.getMessage() != null &&
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io.getMessage().contains("Max pushId exceeded (%s >= %s)"
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.formatted(usePushId, maxPushes))) {
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success = true;
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}
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if (success) {
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out.println("Got expected IOException: " + io);
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} else throw new AssertionError(io);
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}
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if (!success) {
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throw new AssertionError("Unexpected exception: " + c.getCause(), c.getCause());
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}
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}
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assertEquals(0, promises.size());
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// the next time around we should have a new connection,
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// so we can restart from scratch
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pushHandler.reset();
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}
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var errors = custom.errors;
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errors.forEach(t -> t.printStackTrace(System.out));
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var error = errors.stream().findFirst().orElse(null);
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if (error != null) throw error;
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var notified = custom.notified;
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int count = 0;
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Set<PushId> uniqueIds = new HashSet<>();
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Set<String> cIds = new HashSet<>();
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for (var npp : notified) {
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uniqueIds.add(npp.pushId);
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if (npp.pushId instanceof Http3PushId h3id) {
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long id = h3id.pushId();
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cIds.add(h3id.connectionLabel());
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long mod = id % PUSH_PROMISES.size();
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// we can't count the cancelled pushes as
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// how many notifs we might get for those is racy.
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if (mod == 0 || mod >= 4) {
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// was not cancelled
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count++;
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}
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}
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}
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if (!uniqueIds.equals(expectedPushIds)) {
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int problems = 0;
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int missed = 0;
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for (var id : uniqueIds) {
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if (!expectedPushIds.contains(id)) {
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problems++;
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out.printf("%s was not expected%n", id);
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}
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}
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for (var id : expectedPushIds) {
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if (!uniqueIds.contains(id)) {
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if (id instanceof Http3PushId h3id) {
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long mod = h3id.pushId() % PUSH_PROMISES.size();
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if (mod > 0 && mod < 4) {
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// this one was cancelled, so it might not
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// have been notified
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missed++;
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continue;
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}
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}
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problems++;
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out.printf("%s was expected but not notified%n", id);
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}
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}
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if (problems > 0) {
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throw new AssertionError("%s unexpected problems with ids have been found"
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.formatted(problems));
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}
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}
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// excluding those that got cancelled,
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// we should have received REQUEST-1 notifications
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// per push promise and per connection
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assertEquals((PUSH_PROMISES.size()-3)*2*(REQUESTS-1), count,
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"Unexpected notification: " + notified);
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}
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}
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// --- server push handler ---
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static class ServerPushHandler implements HttpTestHandler {
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private final String mainResponseBody;
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private final Map<String,String> promises;
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private final ReentrantLock lock = new ReentrantLock();
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private final Map<String, PendingPromise> sentPromises = new ConcurrentHashMap<>();
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record PendingPromise(long pushId, CountDownLatch latch) {
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PendingPromise(long pushId) {
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this(pushId, new CountDownLatch(REQUESTS));
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}
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}
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public ServerPushHandler(String mainResponseBody,
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Map<String,String> promises)
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throws Exception
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{
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Objects.requireNonNull(promises);
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this.mainResponseBody = mainResponseBody;
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this.promises = promises;
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}
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// The assumption is that there will be several concurrent
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// exchanges, but all on the same connection
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// The first exchange that emits a PushPromise sends
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// a push promise frame + open the push response stream.
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// The other exchanges will simply send a push promise
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// frame, with the pushId allocated by the previous exchange.
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// The sentPromises map is used to store that pushId.
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// This obviously only works if we have a single HTTP/3 connection.
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final AtomicInteger count = new AtomicInteger();
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public void handle(HttpTestExchange exchange) throws IOException {
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long count = -1;
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try {
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count = this.count.incrementAndGet();
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err.println("Server: handle " + exchange +
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" on " + exchange.getConnectionKey());
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out.println("Server: handle " + exchange.getRequestURI() +
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" on " + exchange.getConnectionKey());
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try (InputStream is = exchange.getRequestBody()) {
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is.readAllBytes();
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}
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if (exchange.serverPushAllowed()) {
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pushPromises(exchange);
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}
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// response data for the main response
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try (OutputStream os = exchange.getResponseBody()) {
|
|
byte[] bytes = mainResponseBody.getBytes(UTF_8);
|
|
exchange.sendResponseHeaders(200, bytes.length);
|
|
os.write(bytes);
|
|
} catch (ClosedChannelException ex) {
|
|
out.printf("handling exchange %s, %s: %s%n", count,
|
|
exchange.getRequestURI(), exchange.getRequestHeaders());
|
|
out.printf("Got closed channel exception sending response after sent=%s allowed=%s%n",
|
|
sent, allowed);
|
|
}
|
|
} finally {
|
|
out.printf("handled exchange %s, %s: %s%n", count,
|
|
exchange.getRequestURI(), exchange.getRequestHeaders());
|
|
}
|
|
}
|
|
|
|
volatile long allowed = -1;
|
|
volatile int sent = 0;
|
|
volatile int nsent = 0;
|
|
void reset() {
|
|
lock.lock();
|
|
try {
|
|
allowed = -1;
|
|
sent = 0;
|
|
nsent = 0;
|
|
sentPromises.clear();
|
|
} finally {
|
|
lock.unlock();
|
|
}
|
|
}
|
|
|
|
private void pushPromises(HttpTestExchange exchange) throws IOException {
|
|
URI requestURI = exchange.getRequestURI();
|
|
long waitForPushId = exchange.getRequestHeaders()
|
|
.firstValueAsLong("X-WaitForPushId").orElse(-1);
|
|
long usePushId = exchange.getRequestHeaders()
|
|
.firstValueAsLong("X-UsePushId").orElse(-1);
|
|
if (waitForPushId >= 0) {
|
|
while (allowed <= waitForPushId) {
|
|
try {
|
|
err.printf("Server: waiting for pushId sent=%s allowed=%s: %s%n",
|
|
sent, allowed, waitForPushId);
|
|
var allowed = exchange.waitForHttp3MaxPushId(waitForPushId);
|
|
err.println("Server: Got maxPushId: " + allowed);
|
|
out.println("Server: Got maxPushId: " + allowed);
|
|
lock.lock();
|
|
if (allowed > this.allowed) this.allowed = allowed;
|
|
lock.unlock();
|
|
} catch (InterruptedException ie) {
|
|
ie.printStackTrace();
|
|
}
|
|
}
|
|
}
|
|
for (Map.Entry<String,String> promise : promises.entrySet()) {
|
|
// if usePushId != -1 we send a single push promise,
|
|
// without checking that it's allowed.
|
|
// Otherwise, we stop sending promises when we have consumed
|
|
// the whole window
|
|
if (usePushId == -1 && allowed > 0 && sent >= allowed) {
|
|
err.println("Server: sent all allowed promises: " + sent);
|
|
break;
|
|
}
|
|
|
|
if (waitForPushId >= 0) {
|
|
while (allowed <= waitForPushId) {
|
|
try {
|
|
err.printf("Server: waiting for pushId sent=%s allowed=%s: %s%n",
|
|
sent, allowed, waitForPushId);
|
|
var allowed = exchange.waitForHttp3MaxPushId(waitForPushId);
|
|
err.println("Server: Got maxPushId: " + allowed);
|
|
out.println("Server: Got maxPushId: " + allowed);
|
|
lock.lock();
|
|
if (allowed > this.allowed) this.allowed = allowed;
|
|
lock.unlock();
|
|
} catch (InterruptedException ie) {
|
|
ie.printStackTrace();
|
|
}
|
|
}
|
|
}
|
|
URI uri = requestURI.resolve(promise.getKey());
|
|
InputStream is = new ByteArrayInputStream(promise.getValue().getBytes(UTF_8));
|
|
HttpHeaders headers = HttpHeaders.of(Collections.emptyMap(), (x, y) -> true);
|
|
if (usePushId == -1) {
|
|
long pushId;
|
|
boolean send = false;
|
|
lock.lock();
|
|
PendingPromise pendingPromise;
|
|
try {
|
|
pendingPromise = sentPromises.get(promise.getKey());
|
|
if (pendingPromise == null) {
|
|
pushId = exchange.sendHttp3PushPromiseFrame(-1, uri, headers);
|
|
waitForPushId = pushId + 1;
|
|
pendingPromise = new PendingPromise(pushId);
|
|
sentPromises.put(promise.getKey(), pendingPromise);
|
|
sent += 1;
|
|
send = true;
|
|
} else {
|
|
pushId = pendingPromise.pushId;
|
|
exchange.sendHttp3PushPromiseFrame(pushId, uri, headers);
|
|
}
|
|
} finally {
|
|
lock.unlock();
|
|
}
|
|
pendingPromise.latch.countDown();
|
|
long mod = pushId % promises.size();
|
|
if (send) {
|
|
if (mod == 1) {
|
|
// var stream = exchange.openPushIdStream(pushId);
|
|
// err.println("Server: Opened push stream: " + pushId);
|
|
}
|
|
if (mod > 0 && mod < 4) {
|
|
try {
|
|
pendingPromise.latch.await();
|
|
} catch (InterruptedException e) {
|
|
throw new InterruptedIOException("" + e);
|
|
}
|
|
exchange.sendHttp3CancelPushFrame(pendingPromise.pushId);
|
|
err.println("Server: Cancelled push promise: " + pushId);
|
|
out.println("Server: Cancelled push promise: " + pushId);
|
|
} else {
|
|
exchange.sendHttp3PushResponse(pushId, uri, headers, headers, is);
|
|
out.println("Server: Sent push promise with response: " + pushId);
|
|
err.println("Server: Sent push promise with response: " + pushId);
|
|
}
|
|
} else {
|
|
err.println("Server: Sent push promise frame: " + pushId);
|
|
}
|
|
if (pushId >= waitForPushId) waitForPushId = pushId + 1;
|
|
} else {
|
|
exchange.sendHttp3PushPromiseFrame(usePushId, uri, headers);
|
|
err.println("Server: Sent push promise frame: " + usePushId);
|
|
exchange.sendHttp3PushResponse(usePushId, uri, headers, headers, is);
|
|
err.println("Server: Sent push promise response: " + usePushId);
|
|
lock.lock();
|
|
sent += 1;
|
|
lock.unlock();
|
|
return;
|
|
}
|
|
}
|
|
err.println("Server: All pushes sent");
|
|
}
|
|
}
|
|
}
|