Ziele Untersuchung
mit Columbo Integrität von
Datenbanken Interaktion und
Portierbarkeit Ergonomie der
Schnittstellen

Angebot Produkte Projekt Beratung

Mittel Analytik Modellierung Sprachen Algebra Logik Hardware Denken Kreativität

Zusammenhänge Gesellschaft Wirtschaft Branche Firma


products/Sources/formale Sprachen/Java/Openjdk/test/jdk/java/net/httpclient/ (Sun/Oracle ^©) Datei vom 13.11.2022 mit Größe 9 kB

Quelle MaxStreams.java Sprache: JAVA

/*
* Copyright (c) 2018, 2019, 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.
*/

/*
* @test
* @bug 8196389
* @summary Should HttpClient support SETTINGS_MAX_CONCURRENT_STREAMS from the server
*
* @modules java.base/sun.net.www.http
*          java.net.http/jdk.internal.net.http.common
*          java.net.http/jdk.internal.net.http.frame
*          java.net.http/jdk.internal.net.http.hpack
*          java.logging
*          jdk.httpserver
* @library /test/lib http2/server
* @build Http2TestServer
* @build jdk.test.lib.net.SimpleSSLContext
* @run testng/othervm -ea -esa MaxStreams
*/

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.URI;
import java.util.List;
import java.util.LinkedList;
import java.util.Properties;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.CompletionException;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Executors;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Semaphore;
import javax.net.ssl.SSLContext;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.net.http.HttpResponse.BodyHandler;
import java.net.http.HttpResponse.BodyHandlers;
import jdk.test.lib.net.SimpleSSLContext;
import org.testng.annotations.AfterTest;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;
import static java.nio.charset.StandardCharsets.UTF_8;
import static java.net.http.HttpResponse.BodyHandlers.discarding;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertFalse;
import static org.testng.Assert.fail;

public class MaxStreams {

    Http2TestServer http2TestServer;   // HTTP/2 ( h2c )
    Http2TestServer https2TestServer;   // HTTP/2 ( h2 )
    final Http2FixedHandler handler = new Http2FixedHandler();
    SSLContext ctx;
    String http2FixedURI;
    String https2FixedURI;
    volatile CountDownLatch latch;
    ExecutorService exec;
    final Semaphore canStartTestRun = new Semaphore(1);

    // we send an initial warm up request, then MAX_STREAMS+1 requests
    // in parallel. The last of them should hit the limit.
    // Then we wait for all the responses and send a further request
    // which should succeed. The server should see (and respond to)
    // MAX_STREAMS+2 requests per test run.

    static final int MAX_STREAMS = 10;
    static final String RESPONSE = "Hello world";

    @DataProvider(name = "uris")
    public Object[][] variants() {
        return new Object[][]{
                {http2FixedURI},
                {https2FixedURI},
                {http2FixedURI},
                {https2FixedURI}
        };
    }

    @Test(dataProvider = "uris", timeOut=20000)
    void testAsString(String uri) throws Exception {
        System.err.println("Semaphore acquire");
        canStartTestRun.acquire();
        latch = new CountDownLatch(1);
        handler.setLatch(latch);
        HttpClient client = HttpClient.newBuilder().sslContext(ctx).build();
        List<CompletableFuture<HttpResponse<String>>> responses = new LinkedList<>();

        HttpRequest request = HttpRequest.newBuilder(URI.create(uri))
                                         .version(HttpClient.Version.HTTP_2)
                                         .GET()
                                         .build();
        // send warmup to ensure we only have one Http2Connection
        System.err.println("Sending warmup request");
        HttpResponse<String> warmup = client.send(request, BodyHandlers.ofString());
        if (warmup.statusCode() != 200 || !warmup.body().equals(RESPONSE))
            throw new RuntimeException();

        for (int i=0;i<MAX_STREAMS+1; i++) {
            System.err.println("Sending request " + i);
            responses.add(client.sendAsync(request, BodyHandlers.ofString()));
        }

        // wait until we get local exception before allow server to proceed
        try {
            System.err.println("Waiting for first exception");
            CompletableFuture.anyOf(responses.toArray(new CompletableFuture<?>[0])).join();
        } catch (Exception ee) {
            System.err.println("Expected exception 1 " + ee);
        }

        latch.countDown();

        // check the first MAX_STREAMS requests succeeded
        try {
            System.err.println("Waiting for second exception");
            CompletableFuture.allOf(responses.toArray(new CompletableFuture<?>[0])).join();
            System.err.println("Did not get Expected exception 2 ");
        } catch (Exception ee) {
            System.err.println("Expected exception 2 " + ee);
        }
        int count = 0;
        int failures = 0;
        for (CompletableFuture<HttpResponse<String>> cf : responses) {
            HttpResponse<String> r = null;
            try {
                count++;
                r = cf.join();
                if (r.statusCode() != 200 || !r.body().equals(RESPONSE))
                    throw new RuntimeException();
            } catch (Throwable t) {
                failures++;
                System.err.printf("Failure %d at count %d\n", failures, count);
                System.err.println(t);
                t.printStackTrace();
            }
        }
        if (failures != 1) {
            String msg = "Expected 1 failure. Got " + failures;
            throw new RuntimeException(msg);
        }

        System.err.println("Sending last request");
        // make sure it succeeds now as number of streams == 0 now
        HttpResponse<String> warmdown = client.send(request, BodyHandlers.ofString());
        if (warmdown.statusCode() != 200 || !warmdown.body().equals(RESPONSE))
            throw new RuntimeException();
        System.err.println("Test OK");
    }

    @BeforeTest
    public void setup() throws Exception {
        ctx = (new SimpleSSLContext()).get();
        exec = Executors.newCachedThreadPool();

        InetSocketAddress sa = new InetSocketAddress(InetAddress.getLoopbackAddress(), 0);

        Properties props = new Properties();
        props.setProperty("http2server.settings.max_concurrent_streams", Integer.toString(MAX_STREAMS));
        http2TestServer = new Http2TestServer("localhost", false, 0, exec, 10, props, null);
        http2TestServer.addHandler(handler, "/http2/fixed");
        http2FixedURI = "http://" + http2TestServer.serverAuthority()+ "/http2/fixed";
        http2TestServer.start();

        https2TestServer = new Http2TestServer("localhost", true, 0, exec, 10, props, ctx);
        https2TestServer.addHandler(handler, "/https2/fixed");
        https2FixedURI = "https://" + https2TestServer.serverAuthority()+ "/https2/fixed";
        https2TestServer.start();
    }

    @AfterTest
    public void teardown() throws Exception {
        System.err.println("Stopping test server now");
        http2TestServer.stop();
    }

    class Http2FixedHandler implements Http2Handler {
        final AtomicInteger counter = new AtomicInteger(0);
        volatile CountDownLatch latch;

        synchronized void setLatch(CountDownLatch latch) {
            this.latch = latch;
        }

        synchronized CountDownLatch getLatch() {
            return latch;
        }

        @Override
        public void handle(Http2TestExchange t) throws IOException {
            int c = -1;
            try (InputStream is = t.getRequestBody();
                 OutputStream os = t.getResponseBody()) {

                is.readAllBytes();
                c = counter.getAndIncrement();
                if (c > 0 && c <= MAX_STREAMS) {
                    // Wait for latch.
                    try {
                        // don't send any replies until all requests are sent
                        System.err.println("Latch await");
                        getLatch().await();
                        System.err.println("Latch resume");
                    } catch (InterruptedException ee) {}
                }
                t.sendResponseHeaders(200, RESPONSE.length());
                os.write(RESPONSE.getBytes());
            } finally {
                // client issues MAX_STREAMS + 3 requests in total
                // but server should only see MAX_STREAMS + 2 in total. One is rejected by client
                // counter c captured before increment so final value is MAX_STREAMS + 1
                if (c == MAX_STREAMS + 1) {
                    System.err.println("Semaphore release");
                    counter.set(0);
                    canStartTestRun.release();
                }
            }
        }
    }
}

quality86%

¤ Dauer der Verarbeitung: 0.14 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.