/*
* Copyright (c) 2008-2014 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.cometd.server;
import java.io.IOException;
import java.util.Map;
import java.util.concurrent.atomic.AtomicInteger;
import javax.servlet.AsyncContext;
import javax.servlet.AsyncEvent;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.cometd.bayeux.Message;
import org.cometd.bayeux.server.ServerMessage;
import org.cometd.bayeux.server.ServerSession;
import org.cometd.common.JSONContext;
import org.cometd.common.JettyJSONContextClient;
import org.cometd.server.transport.JSONTransport;
import org.eclipse.jetty.client.api.ContentResponse;
import org.eclipse.jetty.client.api.Request;
import org.junit.Assert;
import org.junit.Test;
public class IdleLongPollTest extends AbstractBayeuxClientServerTest
{
public IdleLongPollTest(String serverTransport)
{
super(serverTransport);
}
@Test
public void testIdleLongPollDoesNotCauseMultipleClientsAdvice() throws Exception
{
startServer(null);
final long timeout = 2000;
final long sleep = 500;
JSONTransport transport = new JSONTransport(bayeux)
{
@Override
protected HttpScheduler newHttpScheduler(HttpServletRequest request, HttpServletResponse response, AsyncContext asyncContext, ServerSessionImpl session, ServerMessage.Mutable reply, String browserId, long timeout)
{
return new DispatchingLongPollScheduler(request, response, asyncContext, session, reply, browserId, timeout)
{
private final AtomicInteger decrements = new AtomicInteger();
@Override
public void onComplete(final AsyncEvent asyncEvent) throws IOException
{
if (decrements.incrementAndGet() == 1)
{
// Simulate that onComplete() is delayed without blocking
// this thread, to cause a race condition
new Thread()
{
@Override
public void run()
{
try
{
Thread.sleep(sleep);
superOnComplete(asyncEvent);
}
catch (Exception x)
{
x.printStackTrace();
}
}
}.start();
}
else
{
superOnComplete(asyncEvent);
}
}
private void superOnComplete(AsyncEvent asyncEvent) throws IOException
{
super.onComplete(asyncEvent);
}
};
}
};
transport.setOption(AbstractServerTransport.TIMEOUT_OPTION, timeout);
transport.init();
bayeux.setTransports(transport);
Request handshake = newBayeuxRequest("[{" +
"\"channel\": \"/meta/handshake\"," +
"\"version\": \"1.0\"," +
"\"minimumVersion\": \"1.0\"," +
"\"supportedConnectionTypes\": [\"long-polling\"]" +
"}]");
ContentResponse response = handshake.send();
Assert.assertEquals(200, response.getStatus());
String clientId = extractClientId(response);
Request connect1 = newBayeuxRequest("[{" +
"\"channel\": \"/meta/connect\"," +
"\"clientId\": \"" + clientId + "\"," +
"\"connectionType\": \"long-polling\"" +
"}]");
response = connect1.send();
Assert.assertEquals(200, response.getStatus());
ServerSession serverSession = bayeux.getSession(clientId);
Assert.assertNotNull(serverSession);
Request connect2 = newBayeuxRequest("[{" +
"\"channel\": \"/meta/connect\"," +
"\"clientId\": \"" + clientId + "\"," +
"\"connectionType\": \"long-polling\"" +
"}]");
response = connect2.send();
Assert.assertEquals(200, response.getStatus());
Request connect3 = newBayeuxRequest("[{" +
"\"channel\": \"/meta/connect\"," +
"\"clientId\": \"" + clientId + "\"," +
"\"connectionType\": \"long-polling\"" +
"}]");
response = connect3.send();
Assert.assertEquals(200, response.getStatus());
JSONContext.Client jsonContext = new JettyJSONContextClient();
Message.Mutable[] messages = jsonContext.parse(response.getContentAsString());
Assert.assertEquals(1, messages.length);
Message.Mutable message = messages[0];
Map<String,Object> advice = message.getAdvice();
Assert.assertNull(advice);
}
}