jdk/test/jdk/java/net/httpclient/http3/H3MultipleConnectionsToSameHost.java
Daniel Fuchs af8977e406 8372951: The property jdk.httpclient.quic.maxBidiStreams should be renamed to jdk.internal
8365794: StreamLimitTest vs H3StreamLimitReachedTest: consider renaming or merging

Reviewed-by: jpai
2025-12-03 15:32:46 +00:00

364 lines
17 KiB
Java

/*
* Copyright (c) 2015, 2025, 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 id=with-continuations
* @bug 8087112 8372409
* @requires os.family != "windows" | ( os.name != "Windows 10" & os.name != "Windows Server 2016"
* & os.name != "Windows Server 2019" )
* @library /test/lib /test/jdk/java/net/httpclient/lib
* @build jdk.test.lib.net.SimpleSSLContext
* jdk.httpclient.test.lib.http2.Http2TestServer
* @run testng/othervm/timeout=360 -XX:+CrashOnOutOfMemoryError
* -Djdk.httpclient.quic.minPtoBackoffTime=60
* -Djdk.httpclient.quic.maxPtoBackoffTime=90
* -Djdk.httpclient.quic.maxPtoBackoff=10
* -Djdk.internal.httpclient.quic.useNioSelector=false
* -Djdk.internal.httpclient.quic.poller.usePlatformThreads=false
* -Djdk.httpclient.quic.maxEndpoints=-1
* -Djdk.httpclient.http3.maxStreamLimitTimeout=0
* -Djdk.internal.httpclient.quic.maxBidiStreams=2
* -Djdk.httpclient.retryOnStreamlimit=50
* -Djdk.httpclient.HttpClient.log=errors,http3,quic:retransmit
* -Dsimpleget.requests=100
* H3MultipleConnectionsToSameHost
* @summary test multiple connections and concurrent requests with blocking IO and virtual threads
*/
/*
* @test id=without-continuations
* @bug 8087112 8372409
* @requires os.family == "windows" & ( os.name == "Windows 10" | os.name == "Windows Server 2016"
* | os.name == "Windows Server 2019" )
* @library /test/lib /test/jdk/java/net/httpclient/lib
* @build jdk.test.lib.net.SimpleSSLContext
* jdk.httpclient.test.lib.http2.Http2TestServer
* @run testng/othervm/timeout=360 -XX:+CrashOnOutOfMemoryError
* -Djdk.httpclient.quic.minPtoBackoffTime=45
* -Djdk.httpclient.quic.maxPtoBackoffTime=60
* -Djdk.httpclient.quic.maxPtoBackoff=9
* -Djdk.internal.httpclient.quic.useNioSelector=false
* -Djdk.internal.httpclient.quic.poller.usePlatformThreads=false
* -XX:+UnlockExperimentalVMOptions -XX:-VMContinuations
* -Djdk.httpclient.quic.maxEndpoints=-1
* -Djdk.httpclient.http3.maxStreamLimitTimeout=0
* -Djdk.internal.httpclient.quic.maxBidiStreams=2
* -Djdk.httpclient.retryOnStreamlimit=50
* -Djdk.httpclient.HttpClient.log=errors,http3,quic:retransmit
* -Dsimpleget.requests=100
* H3MultipleConnectionsToSameHost
* @summary test multiple connections and concurrent requests with blocking IO and virtual threads
* on windows 10 and windows 2016 - but with -XX:-VMContinuations
*/
/*
* @test id=useNioSelector
* @bug 8087112 8372409
* @library /test/lib /test/jdk/java/net/httpclient/lib
* @build jdk.test.lib.net.SimpleSSLContext
* jdk.httpclient.test.lib.http2.Http2TestServer
* @run testng/othervm/timeout=360 -XX:+CrashOnOutOfMemoryError
* -Djdk.httpclient.quic.idleTimeout=120
* -Djdk.httpclient.keepalive.timeout.h3=120
* -Djdk.test.server.quic.idleTimeout=90
* -Djdk.httpclient.quic.minPtoBackoffTime=60
* -Djdk.httpclient.quic.maxPtoBackoffTime=120
* -Djdk.httpclient.quic.maxPtoBackoff=9
* -Djdk.internal.httpclient.quic.useNioSelector=true
* -Djdk.httpclient.http3.maxStreamLimitTimeout=0
* -Djdk.httpclient.quic.maxEndpoints=1
* -Djdk.internal.httpclient.quic.maxBidiStreams=2
* -Djdk.httpclient.retryOnStreamlimit=50
* -Djdk.httpclient.HttpClient.log=errors,http3,quic:hs:retransmit
* -Dsimpleget.requests=100
* H3MultipleConnectionsToSameHost
* @summary Send 100 large concurrent requests, with connections whose max stream
* limit is artificially low, in order to cause concurrent connections
* to the same host to be created, with non-blocking IO and selector
*/
/*
* @test id=reno-cc
* @bug 8087112 8372409
* @library /test/lib /test/jdk/java/net/httpclient/lib
* @build jdk.test.lib.net.SimpleSSLContext
* jdk.httpclient.test.lib.http2.Http2TestServer
* @run testng/othervm/timeout=360 -XX:+CrashOnOutOfMemoryError
* -Djdk.httpclient.quic.idleTimeout=120
* -Djdk.httpclient.keepalive.timeout.h3=120
* -Djdk.test.server.quic.idleTimeout=90
* -Djdk.httpclient.quic.minPtoBackoffTime=60
* -Djdk.httpclient.quic.maxPtoBackoffTime=120
* -Djdk.httpclient.quic.maxPtoBackoff=9
* -Djdk.httpclient.http3.maxStreamLimitTimeout=0
* -Djdk.httpclient.quic.maxEndpoints=1
* -Djdk.internal.httpclient.quic.maxBidiStreams=2
* -Djdk.httpclient.retryOnStreamlimit=50
* -Djdk.httpclient.HttpClient.log=errors,http3,quic:hs:retransmit
* -Dsimpleget.requests=100
* -Djdk.internal.httpclient.quic.congestionController=reno
* H3MultipleConnectionsToSameHost
* @summary Send 100 large concurrent requests, with connections whose max stream
* limit is artificially low, in order to cause concurrent connections
* to the same host to be created, with Reno congestion controller
*/
// Interesting additional settings for debugging and manual testing:
// -----------------------------------------------------------------
// -XX:+UnlockExperimentalVMOptions -XX:-VMContinuations
// -Djdk.httpclient.HttpClient.log=errors,requests,http3,quic
// -Djdk.httpclient.HttpClient.log=requests,errors,quic:retransmit:control,http3
// -Djdk.httpclient.HttpClient.log=errors,requests,quic:all
// -Djdk.httpclient.quic.defaultMTU=64000
// -Djdk.httpclient.quic.defaultMTU=16384
// -Djdk.httpclient.quic.defaultMTU=4096
// -Djdk.httpclient.http3.maxStreamLimitTimeout=1375
// -Xmx16g
// -Djdk.httpclient.quic.defaultMTU=16384
// -Djdk.internal.httpclient.debug=err
// -XX:+HeapDumpOnOutOfMemoryError
// -Djdk.httpclient.HttpClient.log=errors,quic:cc
// -Djdk.httpclient.quic.sendBufferSize=16384
// -Djdk.httpclient.quic.receiveBufferSize=16384
import java.io.IOException;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpClient.Builder;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.net.http.HttpResponse.BodyHandlers;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;
import java.util.Set;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ConcurrentSkipListSet;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import java.util.function.Predicate;
import javax.net.ssl.SSLContext;
import jdk.httpclient.test.lib.common.HttpServerAdapters;
import jdk.internal.net.http.common.Utils;
import jdk.test.lib.net.SimpleSSLContext;
import org.testng.Assert;
import org.testng.annotations.Test;
import static java.net.http.HttpClient.Version.HTTP_3;
import static java.net.http.HttpOption.Http3DiscoveryMode.HTTP_3_URI_ONLY;
import static java.net.http.HttpOption.H3_DISCOVERY;
import static jdk.internal.net.http.Http3ClientProperties.MAX_STREAM_LIMIT_WAIT_TIMEOUT;
public class H3MultipleConnectionsToSameHost implements HttpServerAdapters {
static HttpTestServer httpsServer;
static HttpClient client = null;
static SSLContext sslContext;
static String httpsURIString;
static ExecutorService serverExec =
Executors.newThreadPerTaskExecutor(Thread.ofVirtual()
.name("server-vt-worker-", 1).factory());
static void initialize() throws Exception {
try {
SimpleSSLContext sslct = new SimpleSSLContext();
sslContext = sslct.get();
client = getClient();
httpsServer = HttpTestServer.create(HTTP_3_URI_ONLY, sslContext, serverExec);
httpsServer.addHandler(new TestHandler(), "/");
httpsURIString = "https://" + httpsServer.serverAuthority() + "/bar/";
httpsServer.start();
warmup();
} catch (Throwable e) {
System.err.println("Throwing now");
e.printStackTrace();
throw e;
}
}
private static void warmup() throws Exception {
SimpleSSLContext sslct = new SimpleSSLContext();
var sslContext = sslct.get();
// warmup server
try (var client2 = createClient(sslContext, Executors.newVirtualThreadPerTaskExecutor())) {
HttpRequest request = HttpRequest.newBuilder(URI.create(httpsURIString))
.version(HTTP_3)
.setOption(H3_DISCOVERY, HTTP_3_URI_ONLY)
.HEAD().build();
client2.send(request, BodyHandlers.ofByteArrayConsumer(b-> {}));
}
// warmup client
var httpsServer2 = HttpTestServer.create(HTTP_3_URI_ONLY, sslContext,
Executors.newVirtualThreadPerTaskExecutor());
httpsServer2.addHandler(new TestHandler(), "/");
var httpsURIString2 = "https://" + httpsServer2.serverAuthority() + "/bar/";
httpsServer2.start();
try {
HttpRequest request = HttpRequest.newBuilder(URI.create(httpsURIString2))
.version(HTTP_3)
.setOption(H3_DISCOVERY, HTTP_3_URI_ONLY)
.HEAD().build();
client.send(request, BodyHandlers.ofByteArrayConsumer(b-> {}));
} finally {
httpsServer2.stop();
}
}
public static void main(String[] args) throws Exception {
test();
}
@Test
public static void test() throws Exception {
try {
long prestart = System.nanoTime();
initialize();
long done = System.nanoTime();
System.out.println("Initialization and warmup took "+ TimeUnit.NANOSECONDS.toMillis(done-prestart)+" millis");
// Thread.sleep(30000);
int maxBidiStreams = Utils.getIntegerNetProperty("jdk.internal.httpclient.quic.maxBidiStreams", 100);
long timeout = MAX_STREAM_LIMIT_WAIT_TIMEOUT;
Set<String> connections = new ConcurrentSkipListSet<>();
HttpRequest request = HttpRequest.newBuilder(URI.create(httpsURIString))
.version(HTTP_3)
.setOption(H3_DISCOVERY, HTTP_3_URI_ONLY)
.GET().build();
long start = System.nanoTime();
var resp = client.send(request, BodyHandlers.ofByteArrayConsumer(b-> {}));
Assert.assertEquals(resp.statusCode(), 200);
long elapsed = System.nanoTime() - start;
System.out.println("First request took: " + elapsed + " nanos (" + TimeUnit.NANOSECONDS.toMillis(elapsed) + " ms)");
final int max = property("simpleget.requests", 50);
List<CompletableFuture<HttpResponse<Void>>> list = new ArrayList<>(max);
long start2 = System.nanoTime();
for (int i = 0; i < max; i++) {
int rqNum = i;
var cf = client.sendAsync(request, BodyHandlers.ofByteArrayConsumer(b-> {}))
.whenComplete((r, t) -> {
Optional.ofNullable(r)
.flatMap(HttpResponse::connectionLabel)
.ifPresent(connections::add);
if (r != null) {
System.out.println(rqNum + " completed: " + r.connectionLabel());
} else {
System.out.println(rqNum + " failed: " + t);
}
});
list.add(cf);
//cf.get(); // uncomment to test with serial instead of concurrent requests
}
try {
CompletableFuture.allOf(list.toArray(new CompletableFuture[0])).join();
} finally {
long elapsed2 = System.nanoTime() - start2;
long completed = list.stream().filter(CompletableFuture::isDone)
.filter(Predicate.not(CompletableFuture::isCompletedExceptionally)).count();
if (completed > 0) {
System.out.println("Next " + completed + " requests took: " + elapsed2 + " nanos ("
+ TimeUnit.NANOSECONDS.toMillis(elapsed2) + "ms for " + completed + " requests): "
+ elapsed2 / completed + " nanos per request (" + TimeUnit.NANOSECONDS.toMillis(elapsed2) / completed
+ " ms) on " + connections.size() + " connections");
}
if (completed == list.size()) {
long msPerRequest = TimeUnit.NANOSECONDS.toMillis(elapsed2) / completed;
if (timeout == 0 || timeout < msPerRequest) {
int expectedCount = max / maxBidiStreams;
if (expectedCount > 2) {
if (connections.size() < expectedCount - Math.max(1, expectedCount/5)) {
throw new AssertionError(
"Too few connections: %s for %s requests with %s streams/connection (timeout %s ms)"
.formatted(connections.size(), max, maxBidiStreams, timeout));
}
}
}
if (connections.size() > max - Math.max(1, max/5)) {
throw new AssertionError(
"Too few connections: %s for %s requests with %s streams/connection (timeout %s ms)"
.formatted(connections.size(), max, maxBidiStreams, timeout));
}
}
}
list.forEach((cf) -> Assert.assertEquals(cf.join().statusCode(), 200));
client.close();
} catch (Throwable tt) {
System.err.println("tt caught");
tt.printStackTrace();
throw tt;
} finally {
httpsServer.stop();
}
}
static HttpClient createClient(SSLContext sslContext, ExecutorService clientExec) {
var builder = HttpServerAdapters.createClientBuilderForH3()
.sslContext(sslContext)
.version(HTTP_3)
.proxy(Builder.NO_PROXY);
if (clientExec != null) {
builder = builder.executor(clientExec);
}
return builder.build();
}
static HttpClient getClient() {
if (client == null) {
client = createClient(sslContext, null);
}
return client;
}
static int property(String name, int defaultValue) {
return Integer.parseInt(System.getProperty(name, String.valueOf(defaultValue)));
}
// 32 * 32 * 1024 * 10 chars = 10Mb responses
// 50 requests => 500Mb
// 100 requests => 1Gb
// 1000 requests => 10Gb
private final static int REPEAT = property("simpleget.repeat", 32);
private final static String RESPONSE = "abcdefghij".repeat(property("simpleget.chunks", 1024*32));
private final static byte[] RESPONSE_BYTES = RESPONSE.getBytes(StandardCharsets.UTF_8);
private static class TestHandler implements HttpTestHandler {
@Override
public void handle(HttpTestExchange t) throws IOException {
try (var in = t.getRequestBody()) {
byte[] input = in.readAllBytes();
t.sendResponseHeaders(200, RESPONSE_BYTES.length * REPEAT);
try (var out = t.getResponseBody()) {
if (t.getRequestMethod().equals("HEAD")) return;
for (int i=0; i<REPEAT; i++) {
out.write(RESPONSE_BYTES);
}
}
}
}
}
}