MessagesAfterFailedHandshakeTest.java

/*
 * Copyright (c) 2008-2017 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.client;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;

import org.cometd.bayeux.Channel;
import org.cometd.bayeux.MarkedReference;
import org.cometd.bayeux.Message;
import org.cometd.bayeux.client.ClientSessionChannel;
import org.cometd.bayeux.server.BayeuxServer;
import org.cometd.bayeux.server.ServerChannel;
import org.cometd.bayeux.server.ServerMessage;
import org.cometd.bayeux.server.ServerSession;
import org.cometd.server.DefaultSecurityPolicy;
import org.junit.Before;
import org.junit.Test;

import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

public class MessagesAfterFailedHandshakeTest extends ClientServerTest {
    @Before
    public void init() throws Exception {
        startServer(null);
        bayeux.setSecurityPolicy(new Policy());
    }

    @Test
    public void testSubscribeAfterFailedHandshake() throws Exception {
        final CountDownLatch serverLatch = new CountDownLatch(1);
        final String channelName = "/test_subscribe_after_failed_handshake";
        bayeux.getChannel(Channel.META_SUBSCRIBE).addListener(new ServerChannel.MessageListener() {
            @Override
            public boolean onMessage(ServerSession from, ServerChannel channel, ServerMessage.Mutable message) {
                serverLatch.countDown();
                return true;
            }
        });

        final BayeuxClient client = newBayeuxClient();

        final CountDownLatch handshakeLatch = new CountDownLatch(1);
        client.getChannel(Channel.META_HANDSHAKE).addListener(new ClientSessionChannel.MessageListener() {
            @Override
            public void onMessage(ClientSessionChannel channel, Message message) {
                if (!message.isSuccessful()) {
                    client.getChannel(channelName).subscribe(new ClientSessionChannel.MessageListener() {
                        @Override
                        public void onMessage(ClientSessionChannel channel, Message message) {
                        }
                    });
                    handshakeLatch.countDown();
                }
            }
        });
        final CountDownLatch subscribeLatch = new CountDownLatch(1);
        client.getChannel(Channel.META_SUBSCRIBE).addListener(new ClientSessionChannel.MessageListener() {
            @Override
            public void onMessage(ClientSessionChannel channel, Message message) {
                if (!message.isSuccessful()) {
                    subscribeLatch.countDown();
                }
            }
        });
        client.handshake();

        assertTrue(handshakeLatch.await(5, TimeUnit.SECONDS));
        assertTrue(subscribeLatch.await(5, TimeUnit.SECONDS));
        assertFalse(serverLatch.await(1, TimeUnit.SECONDS));

        disconnectBayeuxClient(client);
    }

    @Test
    public void testPublishAfterFailedHandshake() throws Exception {
        final CountDownLatch serverLatch = new CountDownLatch(1);
        final String channelName = "/test_subscribe_after_failed_handshake";
        MarkedReference<ServerChannel> channel = bayeux.createChannelIfAbsent(channelName);
        channel.getReference().addListener(new ServerChannel.MessageListener() {
            @Override
            public boolean onMessage(ServerSession from, ServerChannel channel, ServerMessage.Mutable message) {
                serverLatch.countDown();
                return true;
            }
        });

        final BayeuxClient client = newBayeuxClient();

        final CountDownLatch handshakeLatch = new CountDownLatch(1);
        client.getChannel(Channel.META_HANDSHAKE).addListener(new ClientSessionChannel.MessageListener() {
            @Override
            public void onMessage(ClientSessionChannel channel, Message message) {
                if (!message.isSuccessful()) {
                    client.getChannel(channelName).publish(new HashMap<String, Object>());
                    handshakeLatch.countDown();
                }
            }
        });
        final CountDownLatch publishLatch = new CountDownLatch(1);
        client.getChannel(channelName).addListener(new ClientSessionChannel.MessageListener() {
            @Override
            public void onMessage(ClientSessionChannel channel, Message message) {
                if (!message.isSuccessful()) {
                    publishLatch.countDown();
                }
            }
        });
        client.handshake();

        assertTrue(handshakeLatch.await(5, TimeUnit.SECONDS));
        assertTrue(publishLatch.await(5, TimeUnit.SECONDS));
        assertFalse(serverLatch.await(1, TimeUnit.SECONDS));

        disconnectBayeuxClient(client);
    }

    private class Policy extends DefaultSecurityPolicy {
        @Override
        public boolean canHandshake(BayeuxServer server, ServerSession session, ServerMessage message) {
            Map<String, Object> ext = message.getExt();
            return ext != null && ext.get("authn") != null;
        }
    }
}