russell@unturf.com
0a580b313d
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
249 lines
11 KiB
Java
249 lines
11 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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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.net.InetSocketAddress;
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import java.nio.charset.StandardCharsets;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.List;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import javax.net.ssl.SSLContext;
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import javax.net.ssl.SSLParameters;
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import jdk.httpclient.test.lib.common.TestUtil;
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import jdk.httpclient.test.lib.quic.ClientConnection;
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import jdk.httpclient.test.lib.quic.ConnectedBidiStream;
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import jdk.httpclient.test.lib.quic.DatagramDeliveryPolicy;
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import jdk.httpclient.test.lib.quic.QuicServer;
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import jdk.httpclient.test.lib.quic.QuicServerConnection;
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import jdk.httpclient.test.lib.quic.QuicServerHandler;
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import jdk.httpclient.test.lib.quic.QuicStandaloneServer;
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import jdk.internal.net.http.quic.QuicClient;
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import jdk.internal.net.quic.QuicTLSContext;
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import jdk.internal.net.quic.QuicVersion;
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import jdk.test.lib.net.SimpleSSLContext;
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import org.junit.jupiter.api.AfterAll;
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import org.junit.jupiter.api.BeforeAll;
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import org.junit.jupiter.api.Test;
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/*
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* @test
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* @summary Verifies QUIC client interaction against servers which exhibit packet loss
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* @library /test/lib /test/jdk/java/net/httpclient/lib
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* @build jdk.httpclient.test.lib.quic.QuicStandaloneServer
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* jdk.httpclient.test.lib.quic.ClientConnection
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* jdk.httpclient.test.lib.common.TestUtil
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* jdk.test.lib.net.SimpleSSLContext
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* @run junit/othervm/timeout=240 -Djdk.internal.httpclient.debug=true
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* -Djdk.httpclient.quic.minPtoBackoffTime=60
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* -Djdk.httpclient.quic.maxPtoBackoffTime=10
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* -Djdk.httpclient.quic.maxPtoBackoff=9
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* -Djdk.httpclient.HttpClient.log=quic,errors PacketLossTest
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*/
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public class PacketLossTest {
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private static final SSLContext sslContext = SimpleSSLContext.findSSLContext();
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private static ExecutorService executor;
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private static final byte[] HELLO_MSG = "Hello Quic".getBytes(StandardCharsets.UTF_8);
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@BeforeAll
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public static void beforeAll() throws Exception {
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executor = Executors.newCachedThreadPool();
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}
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@AfterAll
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public static void afterAll() throws Exception {
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if (executor != null) {
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executor.close();
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}
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}
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private QuicClient createClient() {
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var versions = List.of(QuicVersion.QUIC_V1);
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var context = new QuicTLSContext(sslContext);
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var params = new SSLParameters();
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return new QuicClient.Builder()
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.availableVersions(versions)
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.tlsContext(context)
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.sslParameters(params)
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.executor(executor)
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.bindAddress(TestUtil.chooseClientBindAddress().orElse(null))
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.build();
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}
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sealed interface DropPolicy {
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final record DropRandomly() implements DropPolicy {}
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final record DropEveryNth(int n) implements DropPolicy {}
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final record DropNone() implements DropPolicy {}
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final record DropAll() implements DropPolicy {}
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default DatagramDeliveryPolicy policy() {
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if (this instanceof DropRandomly) {
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return DatagramDeliveryPolicy.dropRandomly();
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} else if (this instanceof DropEveryNth en) {
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return DatagramDeliveryPolicy.dropEveryNth(en.n());
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} else if (this instanceof DropNone) {
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return DatagramDeliveryPolicy.alwaysDeliver();
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} else if (this instanceof DropAll) {
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return DatagramDeliveryPolicy.neverDeliver();
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}
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throw new IllegalStateException("Unknown policy: " + this);
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}
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}
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record DropServer(String name, QuicStandaloneServer server) implements AutoCloseable {
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@Override
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public void close() throws IOException {
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server.close();
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}
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public InetSocketAddress getAddress() {
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return server.getAddress();
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}
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}
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DropServer of(QuicServer.Builder<QuicStandaloneServer> builder, DropPolicy incomimg, DropPolicy outgoing)
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throws IOException {
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QuicStandaloneServer server = builder
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.incomingDeliveryPolicy(incomimg.policy())
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.outgoingDeliveryPolicy(outgoing.policy())
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.build();
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String name = "DropServer(%s, in: %s, out: %s)".formatted(server.name(), incomimg, outgoing);
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return new DropServer(name, server);
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}
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DropPolicy dropEveryNth(int n) {
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return new DropPolicy.DropEveryNth(n);
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}
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DropPolicy dropRandomly() {
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return new DropPolicy.DropRandomly();
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}
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// returns a List of unstarted Quic servers configured with different incoming/outgoing
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// datagram delivery policies
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private List<DropServer> unstartedServers() throws Exception {
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final QuicServer.Builder<QuicStandaloneServer> builder = QuicStandaloneServer.newBuilder()
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.availableVersions(new QuicVersion[]{QuicVersion.QUIC_V1})
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.sslContext(sslContext);
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final List<DropServer> servers = new ArrayList<>();
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servers.add(of(builder, dropEveryNth(3), dropEveryNth(7)));
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servers.add(of(builder, dropRandomly(), dropRandomly()));
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servers.add(of(builder, dropEveryNth(5), dropRandomly()));
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return servers;
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}
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private static void startServer(final QuicStandaloneServer server) throws IOException {
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// add a handler which deals with incoming connections
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server.setHandler(new EchoHandler(HELLO_MSG.length));
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server.start();
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System.out.println("Server " + server.name() + " started at " + server.getAddress());
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}
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/**
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* Uses {@link QuicClient} to pass data and expect back the data to/from Quic servers which
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* might drop incoming/outgoing packets.
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*/
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@Test
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public void testDataTransfer() throws Exception {
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for (final DropServer server : unstartedServers()) {
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startServer(server.server());
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try (server) {
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System.out.printf("%n%n===== %s =====%n%n", server.name());
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System.err.printf("%n%n===== %s =====%n%n", server.name());
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final int numTimes = 20;
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try (final QuicClient client = createClient()) {
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final InetSocketAddress serverAddr = server.getAddress();
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// create a QUIC connection to the server
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final ClientConnection conn = ClientConnection.establishConnection(client, serverAddr);
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for (int i = 1; i <= numTimes; i++) {
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System.out.println("iteration " + i + " against server: " + server.name() +
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", server addr: " + serverAddr);
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// open a bidi stream
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final ConnectedBidiStream bidiStream = conn.initiateNewBidiStream();
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// write data on the stream
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try (final OutputStream os = bidiStream.outputStream()) {
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os.write(HELLO_MSG);
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System.out.println("client: Client wrote message to bidi stream's output stream");
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}
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// wait for response
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try (final InputStream is = bidiStream.inputStream()) {
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System.out.println("client: reading from bidi stream's input stream");
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final byte[] data = is.readAllBytes();
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System.out.println("client: Received response of size " + data.length);
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final String response = new String(data, StandardCharsets.UTF_8);
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// verify response
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System.out.println("client: Response: " + response);
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if (!Arrays.equals(response.getBytes(StandardCharsets.UTF_8), HELLO_MSG)) {
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throw new AssertionError("Unexpected response: " + response);
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}
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} finally {
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System.err.println("client: Closing bidi stream from test");
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bidiStream.close();
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}
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}
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}
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}
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}
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}
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/**
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* Reads data from incoming client initiated bidirectional stream of a Quic connection
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* and writes back a response which is same as the read data
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*/
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private static final class EchoHandler implements QuicServerHandler {
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private final int numBytesToRead;
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private EchoHandler(final int numBytesToRead) {
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this.numBytesToRead = numBytesToRead;
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}
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@Override
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public void handleBidiStream(final QuicServerConnection conn,
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final ConnectedBidiStream bidiStream) throws IOException {
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System.out.println("Handling incoming bidi stream " + bidiStream
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+ " on connection " + conn);
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final byte[] data;
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// read the request content
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try (final InputStream is = bidiStream.inputStream()) {
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System.out.println("Handler reading data from bidi stream's inputstream " + is);
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data = is.readAllBytes();
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System.out.println("Handler read " + data.length + " bytes of data");
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}
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if (data.length != numBytesToRead) {
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throw new IOException("Expected to read " + numBytesToRead
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+ " bytes but read only " + data.length + " bytes");
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}
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// write response
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try (final OutputStream os = bidiStream.outputStream()) {
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System.out.println("Handler writing data to bidi stream's outputstream " + os);
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os.write(data);
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}
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System.out.println("Handler invocation complete");
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}
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}
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}
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