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//
// ========================================================================
// Copyright (c) 1995-2013 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.websocket.common.extensions;
import static org.hamcrest.Matchers.*;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.jetty.io.ArrayByteBufferPool;
import org.eclipse.jetty.io.ByteBufferPool;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
import org.eclipse.jetty.websocket.api.WebSocketPolicy;
import org.eclipse.jetty.websocket.api.extensions.Extension;
import org.eclipse.jetty.websocket.api.extensions.ExtensionConfig;
import org.eclipse.jetty.websocket.api.extensions.ExtensionFactory;
import org.eclipse.jetty.websocket.common.extensions.identity.IdentityExtension;
import org.junit.Assert;
import org.junit.Test;
public class ExtensionStackTest
{
private static final Logger LOG = Log.getLogger(ExtensionStackTest.class);
@SuppressWarnings("unchecked")
private <T> T assertIsExtension(String msg, Object obj, Class<T> clazz)
{
if (clazz.isAssignableFrom(obj.getClass()))
{
return (T)obj;
}
Assert.assertEquals("Expected " + msg + " class",clazz.getName(),obj.getClass().getName());
return null;
}
private ExtensionStack createExtensionStack()
{
WebSocketPolicy policy = WebSocketPolicy.newClientPolicy();
ByteBufferPool bufferPool = new ArrayByteBufferPool();
ExtensionFactory factory = new WebSocketExtensionFactory(policy,bufferPool);
return new ExtensionStack(factory);
}
@Test
public void testStartIdentity() throws Exception
{
ExtensionStack stack = createExtensionStack();
try
{
// 1 extension
List<ExtensionConfig> configs = new ArrayList<>();
configs.add(ExtensionConfig.parse("identity"));
stack.negotiate(configs);
// Setup Listeners
DummyIncomingFrames session = new DummyIncomingFrames("Session");
DummyOutgoingFrames connection = new DummyOutgoingFrames("Connection");
stack.setNextOutgoing(connection);
stack.setNextIncoming(session);
// Start
stack.start();
// Dump
LOG.debug("{}",stack.dump());
// Should be no change to handlers
Extension actualIncomingExtension = assertIsExtension("Incoming",stack.getNextIncoming(),IdentityExtension.class);
Extension actualOutgoingExtension = assertIsExtension("Outgoing",stack.getNextOutgoing(),IdentityExtension.class);
Assert.assertEquals(actualIncomingExtension,actualOutgoingExtension);
}
finally
{
stack.stop();
}
}
@Test
public void testStartIdentityTwice() throws Exception
{
ExtensionStack stack = createExtensionStack();
try
{
// 1 extension
List<ExtensionConfig> configs = new ArrayList<>();
configs.add(ExtensionConfig.parse("identity; id=A"));
configs.add(ExtensionConfig.parse("identity; id=B"));
stack.negotiate(configs);
// Setup Listeners
DummyIncomingFrames session = new DummyIncomingFrames("Session");
DummyOutgoingFrames connection = new DummyOutgoingFrames("Connection");
stack.setNextOutgoing(connection);
stack.setNextIncoming(session);
// Start
stack.start();
// Dump
LOG.debug("{}",stack.dump());
// Should be no change to handlers
IdentityExtension actualIncomingExtension = assertIsExtension("Incoming",stack.getNextIncoming(),IdentityExtension.class);
IdentityExtension actualOutgoingExtension = assertIsExtension("Outgoing",stack.getNextOutgoing(),IdentityExtension.class);
Assert.assertThat("Incoming[identity].id",actualIncomingExtension.getParam("id"),is("A"));
Assert.assertThat("Outgoing[identity].id",actualOutgoingExtension.getParam("id"),is("B"));
}
finally
{
stack.stop();
}
}
@Test
public void testStartNothing() throws Exception
{
ExtensionStack stack = createExtensionStack();
try
{
// intentionally empty
List<ExtensionConfig> configs = new ArrayList<>();
stack.negotiate(configs);
// Setup Listeners
DummyIncomingFrames session = new DummyIncomingFrames("Session");
DummyOutgoingFrames connection = new DummyOutgoingFrames("Connection");
stack.setNextOutgoing(connection);
stack.setNextIncoming(session);
// Start
stack.start();
// Dump
LOG.debug("{}",stack.dump());
// Should be no change to handlers
Assert.assertEquals("Incoming Handler",stack.getNextIncoming(),session);
Assert.assertEquals("Outgoing Handler",stack.getNextOutgoing(),connection);
}
finally
{
stack.stop();
}
}
@Test
public void testToString()
{
ExtensionStack stack = createExtensionStack();
// Shouldn't cause a NPE.
LOG.debug("Shouldn't cause a NPE: {}",stack.toString());
}
@Test
public void testNegotiateChrome32()
{
ExtensionStack stack = createExtensionStack();
String chromeRequest = "permessage-deflate; client_max_window_bits, x-webkit-deflate-frame";
List<ExtensionConfig> requestedConfigs = ExtensionConfig.parseList(chromeRequest);
stack.negotiate(requestedConfigs);
List<ExtensionConfig> negotiated = stack.getNegotiatedExtensions();
String response = ExtensionConfig.toHeaderValue(negotiated);
Assert.assertThat("Negotiated Extensions", response, is("permessage-deflate"));
LOG.debug("Shouldn't cause a NPE: {}",stack.toString());
}
}
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