/*
* 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.util.Map;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import javax.servlet.AsyncContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.cometd.bayeux.Channel;
import org.cometd.bayeux.Message;
import org.cometd.bayeux.server.ServerChannel;
import org.cometd.bayeux.server.ServerMessage;
import org.cometd.bayeux.server.ServerSession;
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.eclipse.jetty.client.util.FutureResponseListener;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
public class ConcurrentConnectDisconnectTest extends AbstractBayeuxClientServerTest
{
public ConcurrentConnectDisconnectTest(String serverTransport)
{
super(serverTransport);
}
@Before
public void prepare() throws Exception
{
startServer(null);
}
@Test
public void testConnectListenerThenDisconnectThenConnectHandler() throws Exception
{
final CountDownLatch connectLatch = new CountDownLatch(2);
final CountDownLatch disconnectLatch = new CountDownLatch(1);
bayeux.getChannel("/meta/connect").addListener(new ServerChannel.MessageListener()
{
public boolean onMessage(ServerSession from, ServerChannel channel, ServerMessage.Mutable message)
{
connectLatch.countDown();
if (connectLatch.getCount() == 0)
await(disconnectLatch);
return true;
}
});
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);
String channelName = "/foo";
Request subscribe = newBayeuxRequest("[{" +
"\"clientId\": \"" + clientId + "\"," +
"\"channel\": \"/meta/subscribe\"," +
"\"subscription\": \"" + channelName + "\"" +
"}]");
response = subscribe.send();
Assert.assertEquals(200, response.getStatus());
Request connect1 = newBayeuxRequest("[{" +
"\"channel\": \"/meta/connect\"," +
"\"clientId\": \"" + clientId + "\"," +
"\"connectionType\": \"long-polling\"" +
"}]");
response = connect1.send();
Assert.assertEquals(200, response.getStatus());
Request connect2 = newBayeuxRequest("[{" +
"\"channel\": \"/meta/connect\"," +
"\"clientId\": \"" + clientId + "\"," +
"\"connectionType\": \"long-polling\"" +
"}]");
FutureResponseListener futureResponse = new FutureResponseListener(connect2);
connect2.send(futureResponse);
// Wait for the second connect to arrive, then disconnect
Assert.assertTrue(connectLatch.await(5, TimeUnit.SECONDS));
Request disconnect = newBayeuxRequest("[{" +
"\"channel\": \"/meta/disconnect\"," +
"\"clientId\": \"" + clientId + "\"" +
"}]");
response = disconnect.send();
Assert.assertEquals(200, response.getStatus());
disconnectLatch.countDown();
response = futureResponse.get(timeout * 2, TimeUnit.SECONDS);
Assert.assertEquals(200, response.getStatus());
Assert.assertTrue(response.getContentAsString().toLowerCase().contains("unknown"));
JettyJSONContextClient parser = new JettyJSONContextClient();
Message.Mutable connectReply2 = parser.parse(response.getContentAsString())[0];
String error = (String)connectReply2.get(Message.ERROR_FIELD);
Assert.assertNotNull(error);
Assert.assertTrue(error.toLowerCase().contains("unknown"));
Map<String,Object> advice = connectReply2.getAdvice();
Assert.assertNotNull(advice);
Assert.assertEquals(Message.RECONNECT_NONE_VALUE, advice.get(Message.RECONNECT_FIELD));
Assert.assertNull(bayeux.getSession(clientId));
// Test that sending a connect for an expired session
// will return an advice with reconnect:"handshake"
Request connect3 = newBayeuxRequest("[{" +
"\"channel\": \"/meta/connect\"," +
"\"clientId\": \"" + clientId + "\"," +
"\"connectionType\": \"long-polling\"" +
"}]");
response = connect3.send();
Assert.assertEquals(200, response.getStatus());
Message.Mutable connectReply3 = parser.parse(response.getContentAsString())[0];
advice = connectReply3.getAdvice();
Assert.assertNotNull(advice);
Assert.assertEquals(Message.RECONNECT_HANDSHAKE_VALUE, advice.get(Message.RECONNECT_FIELD));
}
@Test
public void testConnectHandlerThenDisconnect() throws Exception
{
final CountDownLatch connectLatch = new CountDownLatch(2);
final CountDownLatch disconnectLatch = new CountDownLatch(1);
final CountDownLatch suspendLatch = new CountDownLatch(1);
JSONTransport transport = new JSONTransport(bayeux)
{
@Override
protected ServerMessage.Mutable bayeuxServerHandle(ServerSessionImpl session, ServerMessage.Mutable message)
{
ServerMessage.Mutable reply = super.bayeuxServerHandle(session, message);
if (Channel.META_CONNECT.equals(message.getChannel()))
{
connectLatch.countDown();
if (connectLatch.getCount() == 0)
await(disconnectLatch);
}
return reply;
}
@Override
protected void metaConnectSuspended(HttpServletRequest request, HttpServletResponse response, AsyncContext asyncContext, ServerSession session)
{
suspendLatch.countDown();
}
};
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);
String channelName = "/foo";
Request subscribe = newBayeuxRequest("[{" +
"\"clientId\": \"" + clientId + "\"," +
"\"channel\": \"/meta/subscribe\"," +
"\"subscription\": \"" + channelName + "\"" +
"}]");
response = subscribe.send();
Assert.assertEquals(200, response.getStatus());
Request connect1 = newBayeuxRequest("[{" +
"\"channel\": \"/meta/connect\"," +
"\"clientId\": \"" + clientId + "\"," +
"\"connectionType\": \"long-polling\"" +
"}]");
response = connect1.send();
Assert.assertEquals(200, response.getStatus());
Request connect2 = newBayeuxRequest("[{" +
"\"channel\": \"/meta/connect\"," +
"\"clientId\": \"" + clientId + "\"," +
"\"connectionType\": \"long-polling\"" +
"}]");
FutureResponseListener futureResponse = new FutureResponseListener(connect2);
connect2.send(futureResponse);
// Wait for the second connect to arrive, then disconnect
Assert.assertTrue(connectLatch.await(5, TimeUnit.SECONDS));
Request disconnect = newBayeuxRequest("[{" +
"\"channel\": \"/meta/disconnect\"," +
"\"clientId\": \"" + clientId + "\"" +
"}]");
response = disconnect.send();
Assert.assertEquals(200, response.getStatus());
disconnectLatch.countDown();
// The connect must not be suspended
Assert.assertFalse(suspendLatch.await(1, TimeUnit.SECONDS));
response = futureResponse.get(timeout * 2, TimeUnit.SECONDS);
Assert.assertEquals(200, response.getStatus());
Assert.assertTrue(response.getContentAsString().toLowerCase().contains("\"none\""));
Assert.assertNull(bayeux.getSession(clientId));
}
private void await(CountDownLatch latch)
{
try
{
latch.await();
}
catch (InterruptedException x)
{
Thread.currentThread().interrupt();
}
}
}