/*
* Copyright (c) 2015, 2018, 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.
*/
import java.net.http.HttpClient;
import java.net.http.HttpClient.Version;
import java.net.http.HttpHeaders;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import jdk.testlibrary.SimpleSSLContext;
import javax.net.ServerSocketFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLException;
import javax.net.ssl.SSLServerSocketFactory;
import java.io.IOException;
import java.net.SocketException;
import java.net.URI;
import java.nio.ByteBuffer;
import java.util.List;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.CompletionException;
import java.util.concurrent.CompletionStage;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Flow;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
import java.net.http.HttpResponse.BodyHandler;
import java.net.http.HttpResponse.BodySubscriber;
import static java.lang.String.format;
import static java.lang.System.out;
import static java.nio.charset.StandardCharsets.ISO_8859_1;
/**
* @test
* @bug 8087112
* @library /lib/testlibrary
* @modules java.net.http/jdk.internal.net.http.common
* @build jdk.testlibrary.SimpleSSLContext
* @build MockServer ReferenceTracker
* @run main/othervm CancelledResponse
* @run main/othervm CancelledResponse SSL
*/
/**
* Similar test to SplitResponse except that the client will cancel the response
* before receiving it fully.
*/
public class CancelledResponse {
static String response(String body, boolean serverKeepalive) {
StringBuilder sb = new StringBuilder();
sb.append("HTTP/1.1 200 OK\r\n");
if (!serverKeepalive)
sb.append("Connection: Close\r\n");
sb.append("Content-length: ")
.append(body.getBytes(ISO_8859_1).length)
.append("\r\n");
sb.append("\r\n");
sb.append(body);
return sb.toString();
}
static final String responses[] = {
"Lorem ipsum dolor sit amet consectetur adipiscing elit,",
"sed do eiusmod tempor quis nostrud exercitation ullamco laboris nisi ut",
"aliquip ex ea commodo consequat."
};
static final ReferenceTracker TRACKER = ReferenceTracker.INSTANCE;
final ServerSocketFactory factory;
final SSLContext context;
final boolean useSSL;
CancelledResponse(boolean useSSL) throws IOException {
this.useSSL = useSSL;
context = new SimpleSSLContext().get();
SSLContext.setDefault(context);
factory = useSSL ? SSLServerSocketFactory.getDefault()
: ServerSocketFactory.getDefault();
}
public HttpClient newHttpClient() {
HttpClient client;
if (useSSL) {
client = HttpClient.newBuilder()
.sslContext(context)
.build();
} else {
client = HttpClient.newHttpClient();
}
return TRACKER.track(client);
}
public static void main(String[] args) throws Exception {
boolean useSSL = false;
if (args != null && args.length == 1) {
useSSL = "SSL".equals(args[0]);
}
CancelledResponse sp = new CancelledResponse(useSSL);
Throwable failed = null;
try {
for (Version version : Version.values()) {
for (boolean serverKeepalive : new boolean[]{true, false}) {
// Note: the mock server doesn't support Keep-Alive, but
// pretending that it might exercises code paths in and out of
// the connection pool, and retry logic
for (boolean async : new boolean[]{true, false}) {
sp.test(version, serverKeepalive, async);
}
}
}
} catch (Exception | Error t) {
failed = t;
throw t;
} finally {
Thread.sleep(100);
AssertionError trackFailed = TRACKER.check(500);
if (trackFailed != null) {
if (failed != null) {
failed.addSuppressed(trackFailed);
if (failed instanceof Error) throw (Error) failed;
if (failed instanceof Exception) throw (Exception) failed;
}
throw trackFailed;
}
}
}
static class CancelException extends IOException {
}
// @Test
void test(Version version, boolean serverKeepalive, boolean async)
throws Exception
{
out.println(format("*** version %s, serverKeepAlive: %s, async: %s ***",
version, serverKeepalive, async));
MockServer server = new MockServer(0, factory);
URI uri = new URI(server.getURL());
out.println("server is: " + uri);
server.start();
HttpClient client = newHttpClient();
HttpRequest request = HttpRequest.newBuilder(uri).version(version).build();
try {
for (int i = 0; i < responses.length; i++) {
HttpResponse<String> r = null;
CompletableFuture<HttpResponse<String>> cf1;
CancelException expected = null;
AtomicBoolean cancelled = new AtomicBoolean();
out.println("----- iteration " + i + " -----");
String body = responses[i];
Thread t = sendSplitResponse(response(body, serverKeepalive), server, cancelled);
try {
if (async) {
out.println("send async: " + request);
cf1 = client.sendAsync(request, ofString(body, cancelled));
r = cf1.get();
} else { // sync
out.println("send sync: " + request);
r = client.send(request, ofString(body, cancelled));
}
} catch (CancelException c1) {
System.out.println("Got expected exception: " + c1);
expected = c1;
} catch (IOException | ExecutionException | CompletionException c2) {
Throwable c = c2;
while (c != null && !(c instanceof CancelException)) {
c = c.getCause();
}
if (c instanceof CancelException) {
System.out.println("Got expected exception: " + c);
expected = (CancelException)c;
} else throw c2;
}
if (r != null) {
if (r.statusCode() != 200)
throw new RuntimeException("Failed");
String rxbody = r.body();
out.println("received " + rxbody);
if (!rxbody.equals(body))
throw new RuntimeException(format("Expected:%s, got:%s", body, rxbody));
}
t.join();
conn.close();
if (expected == null) {
throw new RuntimeException("Expected exception not raised for "
+ i + " cancelled=" + cancelled.get());
}
}
} finally {
server.close();
}
System.out.println("OK");
}
static class CancellingSubscriber implements BodySubscriber<String> {
private final String expected;
private final CompletableFuture<String> result;
private Flow.Subscription subscription;
final AtomicInteger index = new AtomicInteger();
final AtomicBoolean cancelled;
CancellingSubscriber(String expected, AtomicBoolean cancelled) {
this.cancelled = cancelled;
this.expected = expected;
result = new CompletableFuture<>();
}
@Override
public CompletionStage<String> getBody() {
return result;
}
@Override
public void onSubscribe(Flow.Subscription subscription) {
this.subscription = subscription;
subscription.request(1);
}
@Override
public void onNext(List<ByteBuffer> item) {
//if (result.isDone())
for (ByteBuffer b : item) {
while (b.hasRemaining() && !result.isDone()) {
int i = index.getAndIncrement();
char at = expected.charAt(i);
byte[] data = new byte[b.remaining()];
b.get(data); // we know that the server writes 1 char
String s = new String(data);
char c = s.charAt(0);
if (c != at) {
Throwable x = new IllegalStateException("char at "
+ i + " is '" + c + "' expected '"
+ at + "' for \"" + expected +"\"");
out.println("unexpected char received, cancelling");
subscription.cancel();
result.completeExceptionally(x);
return;
}
}
}
if (index.get() > 0 && !result.isDone()) {
// we should complete the result here, but let's
// see if we get something back...
out.println("Cancelling subscription after reading " + index.get());
cancelled.set(true);
subscription.cancel();
result.completeExceptionally(new CancelException());
return;
}
if (!result.isDone()) {
out.println("requesting 1 more");
subscription.request(1);
}
}
@Override
public void onError(Throwable throwable) {
result.completeExceptionally(throwable);
}
@Override
public void onComplete() {
int len = index.get();
if (len == expected.length()) {
result.complete(expected);
} else {
Throwable x = new IllegalStateException("received only "
+ len + " chars, expected " + expected.length()
+ " for \"" + expected +"\"");
result.completeExceptionally(x);
}
}
}
static class CancellingHandler implements BodyHandler<String> {
final String expected;
final AtomicBoolean cancelled;
CancellingHandler(String expected, AtomicBoolean cancelled) {
this.expected = expected;
this.cancelled = cancelled;
}
@Override
public BodySubscriber<String> apply(HttpResponse.ResponseInfo rinfo) {
assert !cancelled.get();
return new CancellingSubscriber(expected, cancelled);
}
}
BodyHandler<String> ofString(String expected, AtomicBoolean cancelled) {
return new CancellingHandler(expected, cancelled);
}
// required for cleanup
volatile MockServer.Connection conn;
// Sends the response, mostly, one byte at a time with a small delay
// between bytes, to encourage that each byte is read in a separate read
Thread sendSplitResponse(String s, MockServer server, AtomicBoolean cancelled) {
System.out.println("Sending: ");
Thread t = new Thread(() -> {
System.out.println("Waiting for server to receive headers");
conn = server.activity();
System.out.println("Start sending response");
int sent = 0;
try {
int len = s.length();
out.println("sending " + s);
for (int i = 0; i < len; i++) {
String onechar = s.substring(i, i + 1);
conn.send(onechar);
sent++;
Thread.sleep(10);
}
out.println("sent " + s);
} catch (SSLException | SocketException | RuntimeException x) {
// if SSL then we might get a "Broken Pipe", or a
// RuntimeException wrapping an InvalidAlgorithmParameterException
// (probably if the channel is closed during the handshake),
// otherwise we get a "Socket closed".
boolean expected = cancelled.get();
if (sent > 0 && expected) {
System.out.println("Connection closed by peer as expected: " + x);
return;
} else {
System.out.println("Unexpected exception (sent="
+ sent + ", cancelled=" + expected + "): " + x);
if (x instanceof RuntimeException) throw (RuntimeException) x;
throw new RuntimeException(x);
}
} catch (IOException | InterruptedException e) {
throw new RuntimeException(e);
}
});
t.setDaemon(true);
t.start();
return t;
}
}