230 lines
9.0 KiB
Java
230 lines
9.0 KiB
Java
/*
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* Copyright (c) 2018, 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 8196389
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* @summary Should HttpClient support SETTINGS_MAX_CONCURRENT_STREAMS from the server
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* @library /test/lib /test/jdk/java/net/httpclient/lib
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* @build jdk.httpclient.test.lib.http2.Http2TestServer jdk.test.lib.net.SimpleSSLContext
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* @run testng/othervm MaxStreams
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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.InetAddress;
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import java.net.InetSocketAddress;
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import java.net.URI;
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import java.util.List;
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import java.util.LinkedList;
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import java.util.Properties;
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import java.util.concurrent.atomic.AtomicInteger;
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import java.util.concurrent.CompletableFuture;
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import java.util.concurrent.CountDownLatch;
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import java.util.concurrent.Executors;
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import java.util.concurrent.ExecutorService;
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import javax.net.ssl.SSLContext;
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import java.net.http.HttpClient;
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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.BodyHandlers;
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import jdk.httpclient.test.lib.http2.Http2TestServer;
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import jdk.httpclient.test.lib.http2.Http2TestExchange;
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import jdk.httpclient.test.lib.http2.Http2Handler;
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import jdk.test.lib.net.SimpleSSLContext;
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import org.testng.annotations.AfterTest;
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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 static org.testng.Assert.assertEquals;
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import static org.testng.Assert.assertFalse;
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import static org.testng.Assert.fail;
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public class MaxStreams {
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Http2TestServer http2TestServer; // HTTP/2 ( h2c )
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Http2TestServer https2TestServer; // HTTP/2 ( h2 )
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final Http2FixedHandler handler = new Http2FixedHandler();
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SSLContext ctx;
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String http2FixedURI;
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String https2FixedURI;
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ExecutorService exec;
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// we send an initial warm up request, then MAX_STREAMS+1 requests
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// in parallel. The last of them should hit the limit.
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// Then we wait for all the responses and send a further request
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// which should succeed. The server should see (and respond to)
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// MAX_STREAMS+2 requests per test run.
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static final int MAX_STREAMS = 10;
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static final String RESPONSE = "Hello world";
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@DataProvider(name = "uris")
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public Object[][] variants() {
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return new Object[][]{
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{http2FixedURI},
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{https2FixedURI},
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{http2FixedURI},
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{https2FixedURI}
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};
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}
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@Test(dataProvider = "uris")
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void testAsString(String uri) throws Exception {
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CountDownLatch latch = new CountDownLatch(1);
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handler.setLatch(latch);
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HttpClient client = HttpClient.newBuilder().sslContext(ctx).build();
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List<CompletableFuture<HttpResponse<String>>> responses = new LinkedList<>();
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HttpRequest request = HttpRequest.newBuilder(URI.create(uri))
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.version(HttpClient.Version.HTTP_2)
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.GET()
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.build();
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// send warmup to ensure we only have one Http2Connection
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System.err.println("Sending warmup request");
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HttpResponse<String> warmup = client.send(request, BodyHandlers.ofString());
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if (warmup.statusCode() != 200 || !warmup.body().equals(RESPONSE))
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throw new RuntimeException();
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for (int i=0;i<MAX_STREAMS+1; i++) {
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System.err.println("Sending request " + i);
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responses.add(client.sendAsync(request, BodyHandlers.ofString()));
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}
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// wait until we get local exception before allow server to proceed
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try {
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System.err.println("Waiting for first exception");
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CompletableFuture.anyOf(responses.toArray(new CompletableFuture<?>[0])).join();
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} catch (Exception ee) {
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System.err.println("Expected exception 1 " + ee);
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}
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latch.countDown();
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// check the first MAX_STREAMS requests succeeded
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try {
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System.err.println("Waiting for second exception");
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CompletableFuture.allOf(responses.toArray(new CompletableFuture<?>[0])).join();
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System.err.println("Did not get Expected exception 2 ");
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} catch (Exception ee) {
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System.err.println("Expected exception 2 " + ee);
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}
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int count = 0;
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int failures = 0;
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for (CompletableFuture<HttpResponse<String>> cf : responses) {
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HttpResponse<String> r = null;
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try {
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count++;
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r = cf.join();
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if (r.statusCode() != 200 || !r.body().equals(RESPONSE))
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throw new RuntimeException();
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} catch (Throwable t) {
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failures++;
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System.err.printf("Failure %d at count %d\n", failures, count);
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System.err.println(t);
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t.printStackTrace();
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}
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}
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if (failures != 1) {
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String msg = "Expected 1 failure. Got " + failures;
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throw new RuntimeException(msg);
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}
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System.err.println("Sending last request");
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// make sure it succeeds now as number of streams == 0 now
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HttpResponse<String> warmdown = client.send(request, BodyHandlers.ofString());
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if (warmdown.statusCode() != 200 || !warmdown.body().equals(RESPONSE))
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throw new RuntimeException();
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System.err.println("Test OK");
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}
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@BeforeTest
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public void setup() throws Exception {
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ctx = (new SimpleSSLContext()).get();
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exec = Executors.newCachedThreadPool();
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InetSocketAddress sa = new InetSocketAddress(InetAddress.getLoopbackAddress(), 0);
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Properties props = new Properties();
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props.setProperty("http2server.settings.max_concurrent_streams", Integer.toString(MAX_STREAMS));
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http2TestServer = new Http2TestServer("localhost", false, 0, exec, 10, props, null);
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http2TestServer.addHandler(handler, "/http2/fixed");
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http2FixedURI = "http://" + http2TestServer.serverAuthority()+ "/http2/fixed";
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http2TestServer.start();
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https2TestServer = new Http2TestServer("localhost", true, 0, exec, 10, props, ctx);
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https2TestServer.addHandler(handler, "/https2/fixed");
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https2FixedURI = "https://" + https2TestServer.serverAuthority()+ "/https2/fixed";
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https2TestServer.start();
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}
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@AfterTest
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public void teardown() throws Exception {
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System.err.println("Stopping test server now");
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http2TestServer.stop();
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}
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class Http2FixedHandler implements Http2Handler {
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final AtomicInteger counter = new AtomicInteger(0);
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volatile CountDownLatch latch;
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synchronized void setLatch(CountDownLatch latch) {
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this.latch = latch;
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}
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synchronized CountDownLatch getLatch() {
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return latch;
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}
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@Override
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public void handle(Http2TestExchange t) throws IOException {
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try (InputStream is = t.getRequestBody();
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OutputStream os = t.getResponseBody()) {
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is.readAllBytes();
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int c = counter.getAndIncrement();
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if (c > 0 && c <= MAX_STREAMS) {
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// Wait for latch.
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try {
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// don't send any replies until all requests are sent
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System.err.println("Latch await");
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getLatch().await();
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System.err.println("Latch resume");
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} catch (InterruptedException ee) {}
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} else if (c == MAX_STREAMS + 1) {
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// client issues MAX_STREAMS + 3 requests in total
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// but server should only see MAX_STREAMS + 2 in total. One is rejected by client
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// counter c captured before increment so final value is MAX_STREAMS + 1
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System.err.println("Counter reset");
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counter.set(0);
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}
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t.sendResponseHeaders(200, RESPONSE.length());
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os.write(RESPONSE.getBytes());
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}
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}
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}
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}
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