//
// ========================================================================
// Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.http2.client;
import java.io.IOException;
import java.io.InterruptedIOException;
import java.nio.ByteBuffer;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicReference;
import javax.servlet.AsyncContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.eclipse.jetty.http.HttpFields;
import org.eclipse.jetty.http.HttpVersion;
import org.eclipse.jetty.http.MetaData;
import org.eclipse.jetty.http2.ErrorCodes;
import org.eclipse.jetty.http2.api.Session;
import org.eclipse.jetty.http2.api.Stream;
import org.eclipse.jetty.http2.api.server.ServerSessionListener;
import org.eclipse.jetty.http2.frames.DataFrame;
import org.eclipse.jetty.http2.frames.HeadersFrame;
import org.eclipse.jetty.http2.frames.ResetFrame;
import org.eclipse.jetty.server.HttpOutput;
import org.eclipse.jetty.util.Callback;
import org.eclipse.jetty.util.FutureCallback;
import org.eclipse.jetty.util.FuturePromise;
import org.junit.Assert;
import org.junit.Test;
public class StreamResetTest extends AbstractTest
{
@Test
public void testStreamSendingResetIsRemoved() throws Exception
{
startServer(new ServerSessionListener.Adapter());
Session client = newClient(new Session.Listener.Adapter());
MetaData.Request request = newRequest("GET", new HttpFields());
HeadersFrame requestFrame = new HeadersFrame(0, request, null, false);
FuturePromise<Stream> promise = new FuturePromise<>();
client.newStream(requestFrame, promise, new Stream.Listener.Adapter());
Stream stream = promise.get(5, TimeUnit.SECONDS);
ResetFrame resetFrame = new ResetFrame(stream.getId(), ErrorCodes.CANCEL_STREAM_ERROR);
FutureCallback resetCallback = new FutureCallback();
stream.reset(resetFrame, resetCallback);
resetCallback.get(5, TimeUnit.SECONDS);
// After reset the stream should be gone.
Assert.assertEquals(0, client.getStreams().size());
}
@Test
public void testStreamReceivingResetIsRemoved() throws Exception
{
final AtomicReference<Stream> streamRef = new AtomicReference<>();
final CountDownLatch resetLatch = new CountDownLatch(1);
startServer(new ServerSessionListener.Adapter()
{
@Override
public void onReset(Session session, ResetFrame frame)
{
Stream stream = session.getStream(frame.getStreamId());
Assert.assertNotNull(stream);
Assert.assertTrue(stream.isReset());
streamRef.set(stream);
resetLatch.countDown();
}
});
Session client = newClient(new Session.Listener.Adapter());
MetaData.Request request = newRequest("GET", new HttpFields());
HeadersFrame requestFrame = new HeadersFrame(0, request, null, false);
FuturePromise<Stream> promise = new FuturePromise<>();
client.newStream(requestFrame, promise, new Stream.Listener.Adapter());
Stream stream = promise.get(5, TimeUnit.SECONDS);
ResetFrame resetFrame = new ResetFrame(stream.getId(), ErrorCodes.CANCEL_STREAM_ERROR);
stream.reset(resetFrame, Callback.Adapter.INSTANCE);
Assert.assertTrue(resetLatch.await(5, TimeUnit.SECONDS));
// Wait a while to let the server remove the
// stream after returning from onReset().
Thread.sleep(1000);
Stream serverStream = streamRef.get();
Assert.assertEquals(0, serverStream.getSession().getStreams().size());
}
@Test
public void testStreamResetDoesNotCloseConnection() throws Exception
{
final CountDownLatch serverResetLatch = new CountDownLatch(1);
final CountDownLatch serverDataLatch = new CountDownLatch(1);
startServer(new ServerSessionListener.Adapter()
{
@Override
public Stream.Listener onNewStream(Stream stream, HeadersFrame requestFrame)
{
MetaData.Response response = new MetaData.Response(HttpVersion.HTTP_2, 200, new HttpFields());
HeadersFrame responseFrame = new HeadersFrame(stream.getId(), response, null, false);
stream.headers(responseFrame, Callback.Adapter.INSTANCE);
return new Stream.Listener.Adapter()
{
@Override
public void onData(Stream stream, DataFrame frame, Callback callback)
{
callback.succeeded();
stream.data(new DataFrame(stream.getId(), ByteBuffer.allocate(16), true), Callback.Adapter.INSTANCE);
serverDataLatch.countDown();
}
};
}
@Override
public void onReset(Session session, ResetFrame frame)
{
Stream stream = session.getStream(frame.getStreamId());
// Simulate that there is pending data to send.
stream.data(new DataFrame(stream.getId(), ByteBuffer.allocate(16), true), new Callback.Adapter()
{
@Override
public void failed(Throwable x)
{
serverResetLatch.countDown();
}
});
}
});
Session client = newClient(new Session.Listener.Adapter());
MetaData.Request request1 = newRequest("GET", new HttpFields());
HeadersFrame requestFrame1 = new HeadersFrame(0, request1, null, false);
FuturePromise<Stream> promise1 = new FuturePromise<>();
final CountDownLatch stream1HeadersLatch = new CountDownLatch(1);
final CountDownLatch stream1DataLatch = new CountDownLatch(1);
client.newStream(requestFrame1, promise1, new Stream.Listener.Adapter()
{
@Override
public void onHeaders(Stream stream, HeadersFrame frame)
{
stream1HeadersLatch.countDown();
}
@Override
public void onData(Stream stream, DataFrame frame, Callback callback)
{
stream1DataLatch.countDown();
}
});
Stream stream1 = promise1.get(5, TimeUnit.SECONDS);
Assert.assertTrue(stream1HeadersLatch.await(5, TimeUnit.SECONDS));
MetaData.Request request2 = newRequest("GET", new HttpFields());
HeadersFrame requestFrame2 = new HeadersFrame(0, request2, null, false);
FuturePromise<Stream> promise2 = new FuturePromise<>();
final CountDownLatch stream2DataLatch = new CountDownLatch(1);
client.newStream(requestFrame2, promise2, new Stream.Listener.Adapter()
{
@Override
public void onData(Stream stream, DataFrame frame, Callback callback)
{
stream2DataLatch.countDown();
}
});
Stream stream2 = promise2.get(5, TimeUnit.SECONDS);
ResetFrame resetFrame = new ResetFrame(stream1.getId(), ErrorCodes.CANCEL_STREAM_ERROR);
stream1.reset(resetFrame, Callback.Adapter.INSTANCE);
Assert.assertTrue(serverResetLatch.await(5, TimeUnit.SECONDS));
// Stream MUST NOT receive data sent by server after reset.
Assert.assertFalse(stream1DataLatch.await(1, TimeUnit.SECONDS));
// The other stream should still be working.
stream2.data(new DataFrame(stream2.getId(), ByteBuffer.allocate(16), true), Callback.Adapter.INSTANCE);
Assert.assertTrue(serverDataLatch.await(5, TimeUnit.SECONDS));
Assert.assertTrue(stream2DataLatch.await(5, TimeUnit.SECONDS));
}
@Test
public void testBlockingWriteAfterStreamReceivingReset() throws Exception
{
final CountDownLatch resetLatch = new CountDownLatch(1);
final CountDownLatch dataLatch = new CountDownLatch(1);
startServer(new HttpServlet()
{
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
Charset charset = StandardCharsets.UTF_8;
byte[] data = "AFTER RESET".getBytes(charset);
response.setStatus(200);
response.setContentType("text/plain;charset=" + charset.name());
response.setContentLength(data.length);
response.flushBuffer();
try
{
// Wait for the reset to happen.
Assert.assertTrue(resetLatch.await(5, TimeUnit.SECONDS));
// Wait for the reset to arrive to the server and be processed.
Thread.sleep(1000);
}
catch (InterruptedException x)
{
throw new InterruptedIOException();
}
try
{
// Write some content after the stream has
// been reset, it should throw an exception.
response.getOutputStream().write(data);
}
catch (IOException x)
{
dataLatch.countDown();
}
}
});
Session client = newClient(new Session.Listener.Adapter());
MetaData.Request request = newRequest("GET", new HttpFields());
HeadersFrame frame = new HeadersFrame(0, request, null, true);
client.newStream(frame, new FuturePromise<Stream>(), new Stream.Listener.Adapter()
{
@Override
public void onHeaders(Stream stream, HeadersFrame frame)
{
stream.reset(new ResetFrame(stream.getId(), ErrorCodes.CANCEL_STREAM_ERROR), Callback.Adapter.INSTANCE);
resetLatch.countDown();
}
});
Assert.assertTrue(dataLatch.await(5, TimeUnit.SECONDS));
}
@Test
public void testAsyncWriteAfterStreamReceivingReset() throws Exception
{
final CountDownLatch resetLatch = new CountDownLatch(1);
final CountDownLatch dataLatch = new CountDownLatch(1);
startServer(new HttpServlet()
{
@Override
protected void doGet(HttpServletRequest request, final HttpServletResponse response) throws ServletException, IOException
{
Charset charset = StandardCharsets.UTF_8;
final ByteBuffer data = ByteBuffer.wrap("AFTER RESET".getBytes(charset));
response.setStatus(200);
response.setContentType("text/plain;charset=" + charset.name());
response.setContentLength(data.remaining());
response.flushBuffer();
try
{
// Wait for the reset to happen.
Assert.assertTrue(resetLatch.await(5, TimeUnit.SECONDS));
// Wait for the reset to arrive to the server and be processed.
Thread.sleep(1000);
}
catch (InterruptedException x)
{
throw new InterruptedIOException();
}
// Write some content asynchronously after the stream has been reset.
final AsyncContext context = request.startAsync();
new Thread()
{
@Override
public void run()
{
try
{
// Wait for the request thread to exit
// doGet() so this is really asynchronous.
Thread.sleep(1000);
HttpOutput output = (HttpOutput)response.getOutputStream();
output.sendContent(data, new Callback.Adapter()
{
@Override
public void failed(Throwable x)
{
context.complete();
dataLatch.countDown();
}
});
}
catch (Throwable x)
{
x.printStackTrace();
}
}
}.start();
}
});
Session client = newClient(new Session.Listener.Adapter());
MetaData.Request request = newRequest("GET", new HttpFields());
HeadersFrame frame = new HeadersFrame(0, request, null, true);
client.newStream(frame, new FuturePromise<Stream>(), new Stream.Listener.Adapter()
{
@Override
public void onHeaders(Stream stream, HeadersFrame frame)
{
stream.reset(new ResetFrame(stream.getId(), ErrorCodes.CANCEL_STREAM_ERROR), Callback.Adapter.INSTANCE);
resetLatch.countDown();
}
});
Assert.assertTrue(dataLatch.await(555, TimeUnit.SECONDS));
}
}