//
// ========================================================================
// 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.frames;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.atomic.AtomicInteger;
import org.eclipse.jetty.http2.ErrorCodes;
import org.eclipse.jetty.http2.generator.HeaderGenerator;
import org.eclipse.jetty.http2.generator.SettingsGenerator;
import org.eclipse.jetty.http2.parser.Parser;
import org.eclipse.jetty.io.ByteBufferPool;
import org.eclipse.jetty.io.MappedByteBufferPool;
import org.junit.Assert;
import org.junit.Test;
public class SettingsGenerateParseTest
{
private final ByteBufferPool byteBufferPool = new MappedByteBufferPool();
@Test
public void testGenerateParseNoSettings() throws Exception
{
List<SettingsFrame> frames = testGenerateParse(Collections.<Integer, Integer>emptyMap());
Assert.assertEquals(1, frames.size());
SettingsFrame frame = frames.get(0);
Assert.assertEquals(0, frame.getSettings().size());
Assert.assertTrue(frame.isReply());
}
@Test
public void testGenerateParseSettings() throws Exception
{
Map<Integer, Integer> settings1 = new HashMap<>();
int key1 = 13;
Integer value1 = 17;
settings1.put(key1, value1);
int key2 = 19;
Integer value2 = 23;
settings1.put(key2, value2);
List<SettingsFrame> frames = testGenerateParse(settings1);
Assert.assertEquals(1, frames.size());
SettingsFrame frame = frames.get(0);
Map<Integer, Integer> settings2 = frame.getSettings();
Assert.assertEquals(2, settings2.size());
Assert.assertEquals(value1, settings2.get(key1));
Assert.assertEquals(value2, settings2.get(key2));
}
private List<SettingsFrame> testGenerateParse(Map<Integer, Integer> settings)
{
SettingsGenerator generator = new SettingsGenerator(new HeaderGenerator());
final List<SettingsFrame> frames = new ArrayList<>();
Parser parser = new Parser(byteBufferPool, new Parser.Listener.Adapter()
{
@Override
public boolean onSettings(SettingsFrame frame)
{
frames.add(frame);
return false;
}
}, 4096, 8192);
// Iterate a few times to be sure generator and parser are properly reset.
for (int i = 0; i < 2; ++i)
{
ByteBufferPool.Lease lease = new ByteBufferPool.Lease(byteBufferPool);
generator.generateSettings(lease, settings, true);
frames.clear();
for (ByteBuffer buffer : lease.getByteBuffers())
{
while (buffer.hasRemaining())
{
parser.parse(buffer);
}
}
}
return frames;
}
@Test
public void testGenerateParseInvalidSettings() throws Exception
{
SettingsGenerator generator = new SettingsGenerator(new HeaderGenerator());
final AtomicInteger errorRef = new AtomicInteger();
Parser parser = new Parser(byteBufferPool, new Parser.Listener.Adapter()
{
@Override
public void onConnectionFailure(int error, String reason)
{
errorRef.set(error);
}
}, 4096, 8192);
Map<Integer, Integer> settings1 = new HashMap<>();
settings1.put(13, 17);
ByteBufferPool.Lease lease = new ByteBufferPool.Lease(byteBufferPool);
generator.generateSettings(lease, settings1, true);
// Modify the length of the frame to make it invalid
ByteBuffer bytes = lease.getByteBuffers().get(0);
bytes.putShort(1, (short)(bytes.getShort(1) - 1));
for (ByteBuffer buffer : lease.getByteBuffers())
{
while (buffer.hasRemaining())
{
parser.parse(ByteBuffer.wrap(new byte[]{buffer.get()}));
}
}
Assert.assertEquals(ErrorCodes.FRAME_SIZE_ERROR, errorRef.get());
}
@Test
public void testGenerateParseOneByteAtATime() throws Exception
{
SettingsGenerator generator = new SettingsGenerator(new HeaderGenerator());
final List<SettingsFrame> frames = new ArrayList<>();
Parser parser = new Parser(byteBufferPool, new Parser.Listener.Adapter()
{
@Override
public boolean onSettings(SettingsFrame frame)
{
frames.add(frame);
return false;
}
}, 4096, 8192);
Map<Integer, Integer> settings1 = new HashMap<>();
int key = 13;
Integer value = 17;
settings1.put(key, value);
ByteBufferPool.Lease lease = new ByteBufferPool.Lease(byteBufferPool);
generator.generateSettings(lease, settings1, true);
for (ByteBuffer buffer : lease.getByteBuffers())
{
while (buffer.hasRemaining())
{
parser.parse(ByteBuffer.wrap(new byte[]{buffer.get()}));
}
}
Assert.assertEquals(1, frames.size());
SettingsFrame frame = frames.get(0);
Map<Integer, Integer> settings2 = frame.getSettings();
Assert.assertEquals(1, settings2.size());
Assert.assertEquals(value, settings2.get(key));
Assert.assertTrue(frame.isReply());
}
}