Examples of MQTT

org.fusesource.mqtt.client.MQTT
irino.com">Hiram Chirino

Examples of org.fusesource.mqtt.client.MQTT

    @Test(timeout = 60 * 1000)
    public void testDuplicateSubscriptions() throws Exception {
        addMQTTConnector();
        brokerService.start();


        MQTT mqtt = createMQTTConnection();
        mqtt.setClientId("foo");
        mqtt.setKeepAlive((short) 2);


        final int[] actualQoS = { -1 };
        mqtt.setTracer(new Tracer() {
            @Override
            public void onReceive(MQTTFrame frame) {
                // validate the QoS
                if (frame.messageType() == PUBLISH.TYPE) {
                    actualQoS[0] = frame.qos().ordinal();
                }
            }
        });


        final BlockingConnection connection = mqtt.blockingConnection();
        connection.connect();


        final String RETAIN = "RETAIN";
        connection.publish("TopicA", RETAIN.getBytes(), QoS.EXACTLY_ONCE, true);

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Examples of org.fusesource.mqtt.client.MQTT

    @Test(timeout = 120 * 1000)
    public void testRetainedMessage() throws Exception {
        addMQTTConnector();
        brokerService.start();


        MQTT mqtt = createMQTTConnection();
        mqtt.setKeepAlive((short) 2);


        final String RETAIN = "RETAIN";
        final String TOPICA = "TopicA";


        final String[] clientIds = { null, "foo", "durable" };
        for (String clientId : clientIds) {


            mqtt.setClientId(clientId);
            mqtt.setCleanSession(!"durable".equals(clientId));


            BlockingConnection connection = mqtt.blockingConnection();
            connection.connect();


            // set retained message and check
            connection.publish(TOPICA, RETAIN.getBytes(), QoS.EXACTLY_ONCE, true);
            connection.subscribe(new Topic[]{new Topic(TOPICA, QoS.AT_LEAST_ONCE)});
            Message msg = connection.receive(5000, TimeUnit.MILLISECONDS);
            assertNotNull("No retained message for " + clientId, msg);
            assertEquals(RETAIN, new String(msg.getPayload()));
            msg.ack();
            assertNull(connection.receive(5000, TimeUnit.MILLISECONDS));


            // test duplicate subscription
            connection.subscribe(new Topic[]{new Topic(TOPICA, QoS.AT_LEAST_ONCE)});
            msg = connection.receive(15000, TimeUnit.MILLISECONDS);
            assertNotNull("No retained message on duplicate subscription for " + clientId, msg);
            assertEquals(RETAIN, new String(msg.getPayload()));
            msg.ack();
            assertNull(connection.receive(5000, TimeUnit.MILLISECONDS));
            connection.unsubscribe(new String[]{"TopicA"});


            // clear retained message and check that we don't receive it
            connection.publish(TOPICA, "".getBytes(), QoS.AT_MOST_ONCE, true);
            connection.subscribe(new Topic[]{new Topic(TOPICA, QoS.AT_LEAST_ONCE)});
            msg = connection.receive(5000, TimeUnit.MILLISECONDS);
            assertNull("Retained message not cleared for " + clientId, msg);
            connection.unsubscribe(new String[]{"TopicA"});


            // set retained message again and check
            connection.publish(TOPICA, RETAIN.getBytes(), QoS.EXACTLY_ONCE, true);
            connection.subscribe(new Topic[]{new Topic(TOPICA, QoS.AT_LEAST_ONCE)});
            msg = connection.receive(5000, TimeUnit.MILLISECONDS);
            assertNotNull("No reset retained message for " + clientId, msg);
            assertEquals(RETAIN, new String(msg.getPayload()));
            msg.ack();
            assertNull(connection.receive(5000, TimeUnit.MILLISECONDS));


            // re-connect and check
            connection.disconnect();
            connection = mqtt.blockingConnection();
            connection.connect();
            connection.subscribe(new Topic[]{new Topic(TOPICA, QoS.AT_LEAST_ONCE)});
            msg = connection.receive(5000, TimeUnit.MILLISECONDS);
            assertNotNull("No reset retained message for " + clientId, msg);
            assertEquals(RETAIN, new String(msg.getPayload()));

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Examples of org.fusesource.mqtt.client.MQTT

        final AuthorizationPlugin authorizationPlugin = new AuthorizationPlugin(new SimpleAuthorizationMap(map, map, map));


        brokerService.setPlugins(new BrokerPlugin[] { authorizationPlugin, authenticationPlugin });
        brokerService.start();


        MQTT mqtt = createMQTTConnection();
        mqtt.setClientId("foo");
        mqtt.setKeepAlive((short) 2);


        final BlockingConnection connection = mqtt.blockingConnection();
        connection.connect();


        final String NAMED = "named";
        byte[] qos = connection.subscribe(new Topic[] { new Topic(NAMED, QoS.AT_MOST_ONCE), new Topic(ANONYMOUS, QoS.EXACTLY_ONCE) });
        assertEquals((byte) 0x80, qos[0]);

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Examples of org.fusesource.mqtt.client.MQTT

    @Test(timeout = 60 * 1000)
    public void testUniqueMessageIds() throws Exception {
        addMQTTConnector();
        brokerService.start();


        MQTT mqtt = createMQTTConnection();
        mqtt.setClientId("foo");
        mqtt.setKeepAlive((short) 2);
        mqtt.setCleanSession(true);


        final List<PUBLISH> publishList = new ArrayList<PUBLISH>();
        mqtt.setTracer(new Tracer() {
            @Override
            public void onReceive(MQTTFrame frame) {
                LOG.info("Client received:\n" + frame);
                if (frame.messageType() == PUBLISH.TYPE) {
                    PUBLISH publish = new PUBLISH();
                    try {
                        publish.decode(frame);
                    } catch (ProtocolException e) {
                        fail("Error decoding publish " + e.getMessage());
                    }
                    publishList.add(publish);
                }
            }


            @Override
            public void onSend(MQTTFrame frame) {
                LOG.info("Client sent:\n" + frame);
            }
        });


        final BlockingConnection connection = mqtt.blockingConnection();
        connection.connect();


        // create overlapping subscriptions with different QoSs
        QoS[] qoss = { QoS.AT_MOST_ONCE, QoS.AT_LEAST_ONCE, QoS.EXACTLY_ONCE };
        final String TOPIC = "TopicA/";

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Examples of org.fusesource.mqtt.client.MQTT

    @Test(timeout = 60 * 1000)
    public void testResendMessageId() throws Exception {
        addMQTTConnector("trace=true");
        brokerService.start();


        final MQTT mqtt = createMQTTConnection("resend", false);
        mqtt.setKeepAlive((short) 5);


        final List<PUBLISH> publishList = new ArrayList<PUBLISH>();
        mqtt.setTracer(new Tracer() {
            @Override
            public void onReceive(MQTTFrame frame) {
                LOG.info("Client received:\n" + frame);
                if (frame.messageType() == PUBLISH.TYPE) {
                    PUBLISH publish = new PUBLISH();
                    try {
                        publish.decode(frame);
                    } catch (ProtocolException e) {
                        fail("Error decoding publish " + e.getMessage());
                    }
                    publishList.add(publish);
                }
            }


            @Override
            public void onSend(MQTTFrame frame) {
                LOG.info("Client sent:\n" + frame);
            }
        });


        BlockingConnection connection = mqtt.blockingConnection();
        connection.connect();
        final String TOPIC = "TopicA/";
        final String[] topics = new String[] { TOPIC, "TopicA/+" };
        connection.subscribe(new Topic[] { new Topic(topics[0], QoS.AT_LEAST_ONCE), new Topic(topics[1], QoS.EXACTLY_ONCE) });


        // publish non-retained message
        connection.publish(TOPIC, TOPIC.getBytes(), QoS.EXACTLY_ONCE, false);


        Wait.waitFor(new Wait.Condition() {
            @Override
            public boolean isSatisified() throws Exception {
                return publishList.size() == 2;
            }
        }, 5000);
        assertEquals(2, publishList.size());


        connection.disconnect();


        connection = mqtt.blockingConnection();
        connection.connect();


        Wait.waitFor(new Wait.Condition() {
            @Override
            public boolean isSatisified() throws Exception {

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Examples of org.fusesource.mqtt.client.MQTT

    @Test(timeout = 90 * 1000)
    public void testPacketIdGeneratorNonCleanSession() throws Exception {
        addMQTTConnector("trace=true");
        brokerService.start();


        final MQTT mqtt = createMQTTConnection("nonclean-packetid", false);
        mqtt.setKeepAlive((short) 15);


        final Map<Short, PUBLISH> publishMap = new ConcurrentHashMap<Short, PUBLISH>();
        mqtt.setTracer(new Tracer() {
            @Override
            public void onReceive(MQTTFrame frame) {
                LOG.info("Client received:\n" + frame);
                if (frame.messageType() == PUBLISH.TYPE) {
                    PUBLISH publish = new PUBLISH();
                    try {
                        publish.decode(frame);
                        LOG.info("PUBLISH " + publish);
                    } catch (ProtocolException e) {
                        fail("Error decoding publish " + e.getMessage());
                    }
                    if (publishMap.get(publish.messageId()) != null) {
                        assertTrue(publish.dup());
                    }
                    publishMap.put(publish.messageId(), publish);
                }
            }


            @Override
            public void onSend(MQTTFrame frame) {
                LOG.info("Client sent:\n" + frame);
            }
        });


        BlockingConnection connection = mqtt.blockingConnection();
        connection.connect();
        final String TOPIC = "TopicA/";
        connection.subscribe(new Topic[] { new Topic(TOPIC, QoS.EXACTLY_ONCE) });


        // publish non-retained messages
        final int TOTAL_MESSAGES = 10;
        for (int i = 0; i < TOTAL_MESSAGES; i++) {
            connection.publish(TOPIC, TOPIC.getBytes(), QoS.EXACTLY_ONCE, false);
        }


        // receive half the messages in this session
        for (int i = 0; i < TOTAL_MESSAGES / 2; i++) {
            final Message msg = connection.receive(1000, TimeUnit.MILLISECONDS);
            assertNotNull(msg);
            assertEquals(TOPIC, new String(msg.getPayload()));
            msg.ack();
        }


        connection.disconnect();
        // resume session
        connection = mqtt.blockingConnection();
        connection.connect();
        // receive rest of the messages
        Message msg = null;
        do {
            msg = connection.receive(1000, TimeUnit.MILLISECONDS);

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Examples of org.fusesource.mqtt.client.MQTT

    @Test(timeout = 60 * 1000)
    public void testClientConnectionFailure() throws Exception {
        addMQTTConnector();
        brokerService.start();


        MQTT mqtt = createMQTTConnection("reconnect", false);
        final BlockingConnection connection = mqtt.blockingConnection();
        connection.connect();
        Wait.waitFor(new Wait.Condition() {
            @Override
            public boolean isSatisified() throws Exception {
                return connection.isConnected();
            }
        });


        final String TOPIC = "TopicA";
        final byte[] qos = connection.subscribe(new Topic[] { new Topic(TOPIC, QoS.EXACTLY_ONCE) });
        assertEquals(QoS.EXACTLY_ONCE.ordinal(), qos[0]);
        connection.publish(TOPIC, TOPIC.getBytes(), QoS.EXACTLY_ONCE, false);
        // kill transport
        connection.kill();


        final BlockingConnection newConnection = mqtt.blockingConnection();
        newConnection.connect();
        Wait.waitFor(new Wait.Condition() {
            @Override
            public boolean isSatisified() throws Exception {
                return newConnection.isConnected();

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Examples of org.fusesource.mqtt.client.MQTT

    public void testCleanSession() throws Exception {
        addMQTTConnector();
        brokerService.start();


        final String CLIENTID = "cleansession";
        final MQTT mqttNotClean = createMQTTConnection(CLIENTID, false);
        BlockingConnection notClean = mqttNotClean.blockingConnection();
        final String TOPIC = "TopicA";
        notClean.connect();
        notClean.subscribe(new Topic[] { new Topic(TOPIC, QoS.EXACTLY_ONCE) });
        notClean.publish(TOPIC, TOPIC.getBytes(), QoS.EXACTLY_ONCE, false);
        notClean.disconnect();


        // MUST receive message from previous not clean session
        notClean = mqttNotClean.blockingConnection();
        notClean.connect();
        Message msg = notClean.receive(10000, TimeUnit.MILLISECONDS);
        assertNotNull(msg);
        assertEquals(TOPIC, new String(msg.getPayload()));
        msg.ack();
        notClean.publish(TOPIC, TOPIC.getBytes(), QoS.EXACTLY_ONCE, false);
        notClean.disconnect();


        // MUST NOT receive message from previous not clean session
        final MQTT mqttClean = createMQTTConnection(CLIENTID, true);
        final BlockingConnection clean = mqttClean.blockingConnection();
        clean.connect();
        msg = clean.receive(10000, TimeUnit.MILLISECONDS);
        assertNull(msg);
        clean.subscribe(new Topic[] { new Topic(TOPIC, QoS.EXACTLY_ONCE) });
        clean.publish(TOPIC, TOPIC.getBytes(), QoS.EXACTLY_ONCE, false);

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Examples of org.fusesource.mqtt.client.MQTT


    @Test(timeout = 60 * 1000)
    public void testPingKeepsInactivityMonitorAlive() throws Exception {
        addMQTTConnector();
        brokerService.start();
        MQTT mqtt = createMQTTConnection();
        mqtt.setClientId("foo");
        mqtt.setKeepAlive((short) 2);
        final BlockingConnection connection = mqtt.blockingConnection();
        connection.connect();


        assertTrue("KeepAlive didn't work properly", Wait.waitFor(new Wait.Condition() {


            @Override

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Examples of org.fusesource.mqtt.client.MQTT


    @Test(timeout = 60 * 1000)
    public void testTurnOffInactivityMonitor() throws Exception {
        addMQTTConnector("transport.useInactivityMonitor=false");
        brokerService.start();
        MQTT mqtt = createMQTTConnection();
        mqtt.setClientId("foo3");
        mqtt.setKeepAlive((short) 2);
        final BlockingConnection connection = mqtt.blockingConnection();
        connection.connect();


        assertTrue("KeepAlive didn't work properly", Wait.waitFor(new Wait.Condition() {


            @Override

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