org.eclipse.paho.client.mqttv3.MqttConnectOptions Java Examples

@Before
public void before() throws Exception {
    log.info("=============================={}.{}==============================",
            this.getClass().getSimpleName(),
            this.testName.getMethodName());

    String clientId = UUID.randomUUID().toString();

    this.cleanupOptions = new MqttConnectOptions();
    this.cleanupOptions.setConnectionTimeout(this.actionTimeout);
    this.cleanupOptions.setKeepAliveInterval(this.actionTimeout);
    this.cleanupOptions.setMqttVersion(MqttConnectOptions.MQTT_VERSION_3_1_1);
    this.cleanupOptions.setCleanSession(true);

    this.persistOptions = new MqttConnectOptions();
    this.persistOptions.setConnectionTimeout(this.actionTimeout);
    this.persistOptions.setKeepAliveInterval(this.actionTimeout);
    this.persistOptions.setMqttVersion(MqttConnectOptions.MQTT_VERSION_3_1_1);
    this.persistOptions.setCleanSession(false);

    this.mqttClient = new MqttClient(this.url, clientId, null);
    this.mqttClient.connect(this.cleanupOptions);
}
 

@Test
public void testWill() {
    try {
        String clientId = UUID.randomUUID().toString();
        MqttClient mqttClient = new MqttClient(this.url, clientId, null);

        MqttConnectOptions connectOptions = new MqttConnectOptions();
        connectOptions.setConnectionTimeout(this.actionTimeout);
        connectOptions.setKeepAliveInterval(this.actionTimeout);
        connectOptions.setMqttVersion(MqttConnectOptions.MQTT_VERSION_3_1_1);
        connectOptions.setWill(this.topicName, this.content.getBytes(), 1, false);
        connectOptions.setCleanSession(true);
        mqttClient.connect(this.cleanupOptions);
        mqttClient.disconnect();

        Assert.assertTrue(true);
    } catch (MqttException e) {
        log.error("exception", e);
        Assert.fail();
    }
}
 

public MqttConnectOptions getMqttConnectOptions() throws NoSuchAlgorithmException, KeyManagementException {
	MqttConnectOptions connectOptions = new MqttConnectOptions();

	connectOptions.setConnectionTimeout(DEFAULT_CONNECTION_TIMEMOUT);

	connectOptions.setUserName(getMqttUsername());
	connectOptions.setPassword(getMqttPassword().toCharArray());

	connectOptions.setCleanSession(this.options.mqtt.cleanStart);
	connectOptions.setKeepAliveInterval(this.options.mqtt.keepAlive);
	connectOptions.setMaxInflight(DEFAULT_MAX_INFLIGHT_MESSAGES);
	connectOptions.setAutomaticReconnect(true);

	SSLContext sslContext = SSLContext.getInstance("TLSv1.2");
	sslContext.init(null, null, null);

	connectOptions.setSocketFactory(sslContext.getSocketFactory());

	return connectOptions;
}
 

private MqttConnectOptions buildMqttConnectOptions(AbstractAwsIotClient client, SocketFactory socketFactory) {
    MqttConnectOptions options = new MqttConnectOptions();

    options.setSocketFactory(socketFactory);
    options.setCleanSession(client.isCleanSession());
    options.setConnectionTimeout(client.getConnectionTimeout() / 1000);
    options.setKeepAliveInterval(client.getKeepAliveInterval() / 1000);
    if(client.isClientEnableMetrics()) {
        options.setUserName(USERNAME_METRIC_STRING);
    }

    Set<String> serverUris = getServerUris();
    if (serverUris != null && !serverUris.isEmpty()) {
        String[] uriArray = new String[serverUris.size()];
        serverUris.toArray(uriArray);
        options.setServerURIs(uriArray);
    }

    if (client.getWillMessage() != null) {
        AWSIotMessage message = client.getWillMessage();

        options.setWill(message.getTopic(), message.getPayload(), message.getQos().getValue(), false);
    }

    return options;
}
 

@Test
public void testConnect31() {
    try {
        // client id must less then 23 bytes in 3.1
        String clientId = UUID.randomUUID().toString().split("-")[0];
        MqttClient mqttClient = new MqttClient(this.url, clientId, null);
        MqttConnectOptions connOpts = new MqttConnectOptions();
        connOpts.setConnectionTimeout(this.actionTimeout);
        connOpts.setMqttVersion(MqttConnectOptions.MQTT_VERSION_3_1);
        mqttClient.connect(connOpts);

        Assert.assertTrue(true);
    } catch (MqttException e) {
        log.error("exception", e);
        Assert.fail();
    }
}
 

@Test
public void whenPahoConnectToBrokerViaProxyThenItWorks() throws Throwable {
    
    // Wait a second
    Thread.sleep(1000);
    
    // Create the client
    MqttConnectOptions options = new MqttConnectOptions();
    options.setAutomaticReconnect(false);
    options.setCleanSession(false);
    options.setKeepAliveInterval(1);
    options.setConnectionTimeout(1);
    
    String proxyUrl = "tcp://" + PROXY_HOST + ":" + PROXY_PORT;
    MqttAsyncClient asyncClient = new MqttAsyncClient(proxyUrl, "test-client-id", new MemoryPersistence());
    
    // Connect, publish, disconnect
    AsyncPahoUtils.connect(asyncClient);
    AsyncPahoUtils.publish(asyncClient, "topical", "Test message".getBytes());
    AsyncPahoUtils.disconnect(asyncClient);
    
    // Check we received a message
    Assert.assertEquals(1, broker.getMessages().size());
    
}
 

public void activate(Dictionary<String, Object> config) throws Exception {
    this.config = config;
    client = new MqttClient(
            getValue(config, SERVER_PROPERTY, SERVER_DEFAULT),
            getValue(config, CLIENT_ID_PROPERTY, CLIENT_ID_DEFAULT),
            new MemoryPersistence());
    MqttConnectOptions options = new MqttConnectOptions();
    options.setCleanSession(true);
    String username = getValue(config, "username", null);
    String password = getValue(config, "password", null);
    if (username != null) {
        options.setUserName(username);
    }
    if (password != null) {
        options.setPassword(password.toCharArray());
    }
    client.connect(options);
}
 

@PostConstruct
public void init() throws MqttException {
   final String serverURI = "tcp://localhost:1883";
   final MqttConnectOptions options = new MqttConnectOptions();
   options.setAutomaticReconnect(true);
   options.setCleanSession(false);
   options.setMaxInflight(1000);
   options.setServerURIs(new String[] {serverURI});
   options.setMqttVersion(MQTT_VERSION_3_1_1);

   final ThreadFactory threadFactory = new DefaultThreadFactory("mqtt-client-exec");
   executorService = new ScheduledThreadPoolExecutor(corePoolSize, threadFactory, new ThreadPoolExecutor.CallerRunsPolicy());
   mqttClient = new MqttClient(serverURI, clientId, persistence, executorService);
   mqttClient.setTimeToWait(-1);
   mqttClient.connect(options);
   mqttClient.setCallback(this);
   log.debugf("[MQTT][Connected][client: %s]", clientId);
}
 

@Test
public void refusedBadUsernamePassword(TestContext context) {

  this.expectedReturnCode = MqttConnectReturnCode.CONNECTION_REFUSED_BAD_USER_NAME_OR_PASSWORD;

  try {
    MemoryPersistence persistence = new MemoryPersistence();
    MqttConnectOptions options = new MqttConnectOptions();
    options.setUserName("wrong_username");
    options.setPassword("wrong_password".toCharArray());
    MqttClient client = new MqttClient(String.format("tcp://%s:%d", MQTT_SERVER_HOST, MQTT_SERVER_PORT), "12345", persistence);
    client.connect(options);
    context.fail();
  } catch (MqttException e) {
    context.assertTrue(e.getReasonCode() == MqttException.REASON_CODE_FAILED_AUTHENTICATION);
  }
}
 

private MqttConnectOptions configureConnectionOptions() throws JoseException {
    MqttConnectOptions options = new MqttConnectOptions();

    // Note that the Cloud IoT only supports MQTT 3.1.1, and Paho requires that we
    // explicitly set this. If you don't set MQTT version, the server will immediately close its
    // connection to your device.
    options.setMqttVersion(MqttConnectOptions.MQTT_VERSION_3_1_1);

    // Cloud IoT Core ignores the user name field, but Paho requires a user name in order
    // to send the password field. We set the user name because we need the password to send a
    // JWT to authorize the device.
    options.setUserName("unused");

    // generate the jwt password
    options.setPassword(mJwtGenerator.createJwt().toCharArray());

    return options;
}
 

@Test
public void refusedUnacceptableProtocolVersion(TestContext context) {

  this.expectedReturnCode = MqttConnectReturnCode.CONNECTION_REFUSED_UNACCEPTABLE_PROTOCOL_VERSION;

  try {
    MemoryPersistence persistence = new MemoryPersistence();
    MqttConnectOptions options = new MqttConnectOptions();
    // trying the old 3.1
    options.setMqttVersion(MqttConnectOptions.MQTT_VERSION_3_1);
    MqttClient client = new MqttClient(String.format("tcp://%s:%d", MQTT_SERVER_HOST, MQTT_SERVER_PORT), "12345", persistence);
    client.connect(options);
    context.fail();
  } catch (MqttException e) {
    context.assertTrue(e.getReasonCode() == MqttException.REASON_CODE_INVALID_PROTOCOL_VERSION);
  }
}
 

@Test
public void refusedClientIdZeroBytes(TestContext context) {

  this.expectedReturnCode = MqttConnectReturnCode.CONNECTION_REFUSED_IDENTIFIER_REJECTED;

  try {
    MemoryPersistence persistence = new MemoryPersistence();
    MqttConnectOptions options = new MqttConnectOptions();
    options.setCleanSession(false);
    options.setMqttVersion(MqttConnectOptions.MQTT_VERSION_3_1_1);
    MqttClient client = new MqttClient(String.format("tcp://%s:%d", MQTT_SERVER_HOST, MQTT_SERVER_PORT), "", persistence);
    client.connect(options);
    context.fail();
  } catch (MqttException e) {
    context.assertTrue(e.getReasonCode() == MqttException.REASON_CODE_INVALID_CLIENT_ID);
    context.assertNotNull(rejection);
  }
}
 

@Bean
public DefaultMqttPahoClientFactory clientFactory() {

    MqttConnectOptions connectOptions = new MqttConnectOptions();
    String username = mqttProperties.getUsername();
    String password = mqttProperties.getPassword();
    if(username != null) {
        connectOptions.setUserName(username);
    }
    if (password != null) {
        connectOptions.setPassword(password.toCharArray());
    }
    String[] serverURIs = mqttProperties.getServerURIs();
    if (serverURIs == null || serverURIs.length == 0) {
        throw new NullPointerException("serverURIs can not be null");
    }
    connectOptions.setCleanSession(mqttProperties.getCleanSession());
    connectOptions.setKeepAliveInterval(mqttProperties.getKeepAliveInterval());
    connectOptions.setServerURIs(serverURIs);

    DefaultMqttPahoClientFactory factory = new DefaultMqttPahoClientFactory();
    factory.setConnectionOptions(connectOptions);

    return factory;
}
 

@Test
public void testInvalidClientIdentifier(TestContext context) throws Exception {

  MemoryPersistence persistence = new MemoryPersistence();
  MqttClient client = new MqttClient(String.format("tcp://%s:%d", MQTT_SERVER_HOST, MQTT_SERVER_PORT), "invalid-id-with-24-chars", persistence);
  MqttConnectOptions options = new MqttConnectOptions();
  options.setMqttVersion(MQTT_VERSION_3_1);

  try {

    client.connect(options);
    context.assertTrue(false);

  } catch (MqttException ignore) {
    context.assertTrue(true);
  }
}
 

@Test
public void testValidClientIdentifier(TestContext context) throws Exception {

  MemoryPersistence persistence = new MemoryPersistence();
  MqttClient client = new MqttClient(String.format("tcp://%s:%d", MQTT_SERVER_HOST, MQTT_SERVER_PORT), "id-madeof-23-characters", persistence);
  MqttConnectOptions options = new MqttConnectOptions();
  options.setMqttVersion(MQTT_VERSION_3_1);

  try {

    client.connect(options);
    context.assertTrue(true);

  } catch (MqttException ignore) {
    context.assertTrue(false);
  }
}
 

public ProtobufMqttProtocolHandler(NativeDeviceFactoryInterface deviceFactory) {
	super(deviceFactory);

	String mqtt_url = PropertyUtil.getProperty(MQTT_URL_PROP, null);
	if (mqtt_url == null) {
		throw new RuntimeIOException("Property '" + MQTT_URL_PROP + "' must be set");
	}

	try {
		mqttClient = new MqttClient(mqtt_url, MqttClient.generateClientId(), new MemoryPersistence());
		mqttClient.setCallback(this);
		MqttConnectOptions con_opts = new MqttConnectOptions();
		con_opts.setAutomaticReconnect(true);
		con_opts.setCleanSession(true);
		mqttClient.connect(con_opts);
		Logger.debug("Connected to {}", mqtt_url);

		// Subscribe
		Logger.debug("Subscribing to response and notification topics...");
		mqttClient.subscribe(MqttProviderConstants.RESPONSE_TOPIC);
		mqttClient.subscribe(MqttProviderConstants.GPIO_NOTIFICATION_TOPIC);
		Logger.debug("Subscribed");
	} catch (MqttException e) {
		throw new RuntimeIOException(e);
	}
}
 

/**
 * 服务初始化回调函数
 */
@Override
public void onCreate() {
    super.onCreate();

    /**创建一个Handler*/
    mConnHandler = new Handler();
    try {
        /**新建一个本地临时存储数据的目录，该目录存储将要发送到服务器的数据，直到数据被发送到服务器*/
        mDataStore = new MqttDefaultFilePersistence(getCacheDir().getAbsolutePath());
    } catch(Exception e) {
        e.printStackTrace();
        /**新建一个内存临时存储数据的目录*/
        mDataStore = null;
        mMemStore = new MemoryPersistence();
    }
    /**连接的参数选项*/
    mOpts = new MqttConnectOptions();
    /**删除以前的Session*/
    mOpts.setCleanSession(MQTT_CLEAN_SESSION);
    // Do not set keep alive interval on mOpts we keep track of it with alarm's
    /**定时器用来实现心跳*/
    mAlarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
    /**管理网络连接*/
    mConnectivityManager = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE);
}
 

/**
 * 连接mqtt server,并返回一个客户端对象,如果连接失败,那么返回null
 */
public MqttAsyncClient connectBroker() {
    LOG.info(String.format("mqtt=======客户端%s与rabbitMQ server: %s 准备建立连接,userName = %s", getMqttClientId(), JSON.toJSONString(serverURIs), userName));
    try {
        sampleClient = new MqttAsyncClient("tcp://overriddenByMqttConnectOptions.setServerURIs:1883", getMqttClientId(), persistence);
        connOpts = new MqttConnectOptions();
        connOpts.setAutomaticReconnect(true);
        connOpts.setServerURIs(serverURIs);
        connOpts.setUserName(userName);
        connOpts.setPassword(getPwd());
        connOpts.setCleanSession(cleanSession);
        connOpts.setMaxInflight(1000 /**默认的值是10,对于我们来说这个值太小!*/);
        connOpts.setKeepAliveInterval(keepAliveInterval);
        sampleClient.setCallback(getCallback(this));
        sampleClient.connect(connOpts).waitForCompletion(60 * 1000);
        LOG.info(String.format("mqtt=======客户端%s与rabbitMQ server: %s 建立连接完成,userName = %s", getMqttClientId(), JSON.toJSONString(serverURIs), userName));
        return sampleClient;
    } catch (MqttException me) {
        throw new RuntimeException(String.format("mqtt=======客户端%s与rabbitMQ server: %s 连接失败!!! userName = %s", getMqttClientId(), JSON.toJSONString(serverURIs), userName), me);
    }
}
 

private static void sendMessages(MqttClient client, MqttConnectOptions options, String destination, String name, int interval, WrapInt count) throws Exception {
    client.connect(options);
    System.out.println(String.format("Successfully connected to %s", client.getServerURI()));

    while (true) {
        count.v++;

        String message = String.format("[topic://%s] [%s] Message number %s", destination.replace('/', '.'), name, count.v);
        client.publish(destination, message.getBytes(StandardCharsets.UTF_8), 1, false);

        if (interval > 0) {
            System.out.println(String.format("%s - Sender: sent '%s'", df.format(new Date()), message));
            try {
                Thread.sleep(interval);
            } catch (InterruptedException e) {
                System.out.println(String.format("Error: %s", e.getMessage()));
                System.exit(1);
            }
        }
    }
}
 

private static void receiveMessages(final MqttClient client, final MqttConnectOptions options,final  String destination) throws Exception {
    new Thread(new Runnable() {
        public void run() {
            try {
                client.setCallback(new MqttCallback() {
                    public void connectionLost(Throwable cause) {
                    }

                    public void messageArrived(String topic, MqttMessage message) throws Exception {
                        System.out.println(String.format("%s - Receiver: received '%s'", df.format(new Date()), new String(message.getPayload())));
                    }

                    public void deliveryComplete(IMqttDeliveryToken token) {
                    }
                });
                client.connect(options);
                System.out.println(String.format("Successfully connected to %s", client.getServerURI()));

                client.subscribe(destination);
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }
    }).start();
}
 

public MqttListener() {
	try {
		mqttClient = new MqttClient(mqttServer, MqttClient.generateClientId(), new MemoryPersistence());
		mqttClient.setCallback(this);
		MqttConnectOptions con_opts = new MqttConnectOptions();
		con_opts.setCleanSession(true);
		mqttClient.connect(con_opts);
		System.out.println("Connected to '" + mqttServer + "'");
	} catch (MqttException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	}
}
 

@Test
public void whenBrokerIsRestartedThenWithAutoReconnectClientIsReconnected() throws Throwable {
    
    // Create client with re-connect and dirty sessions
    MqttConnectOptions options = new MqttConnectOptions();
    options.setAutomaticReconnect(true);
    options.setCleanSession(false);
    options.setKeepAliveInterval(1);
    options.setConnectionTimeout(1);
    
    String proxyUrl = "tcp://" + PROXY_HOST + ":" + PROXY_PORT;
    MqttAsyncClient asyncClient = new MqttAsyncClient(proxyUrl, "test-client-id", new MemoryPersistence());
    ObservableMqttClient observableClient = observableClient(asyncClient, options);
    
    // Connect
    observableClient.connect().blockingAwait();
    Assert.assertTrue(observableClient.isConnected());

    // Stop the broker proxy
    this.brokerProxy.disable();
    Thread.sleep(3000);
    Assert.assertFalse(observableClient.isConnected());
 
    // Restart the broker proxy
    this.brokerProxy.enable();
    Thread.sleep(5000);
    Assert.assertTrue(observableClient.isConnected());	
}
 

@Test
public void whenBrokerIsStoppedThenClientIsDisconnected() throws Throwable {
    
	// Create client with re-connect and dirty sessions
    MqttConnectOptions options = new MqttConnectOptions();
    options.setAutomaticReconnect(false);
    options.setCleanSession(false);
    options.setKeepAliveInterval(1);
    options.setConnectionTimeout(1);
    
    String proxyUrl = "tcp://" + PROXY_HOST + ":" + PROXY_PORT;
	MqttAsyncClient asyncClient = new MqttAsyncClient(proxyUrl, "test-client-id", new MemoryPersistence());
    ObservableMqttClient observableClient = observableClient(asyncClient, options);
    
    // Connect
    observableClient.connect().blockingAwait();
    Assert.assertTrue(observableClient.isConnected());

    // Stop the broker proxy
    this.brokerProxy.disable();
    Thread.sleep(3000);
    Assert.assertFalse(observableClient.isConnected());
 
    // Restart the broker proxy
    this.brokerProxy.enable();
    Thread.sleep(3000);
    Assert.assertFalse(observableClient.isConnected());
    
}
 

@Test
public void whenWeConnectObservableClientToTestBrokerThenItCanPublishMessages() throws Throwable {
    
    // Connect, publish, disconnect
    MqttAsyncClient asyncClient = new MqttAsyncClient(this.broker.toUrl(), "test-client-id", new MemoryPersistence());
    ObservableMqttClient observableClient = observableClient(asyncClient, new MqttConnectOptions());
    observableClient.connect().blockingAwait();
    observableClient.publish("topical", PublishMessage.create("Test message".getBytes(), 2, false)).blockingGet();
    observableClient.disconnect().blockingAwait();
    
    // Check we received a message
    Assert.assertEquals(1, broker.getMessages().size());
}
 

public static MqttConnectOptions getConnectionOptions() {
    final MqttConnectOptions connOpts = new MqttConnectOptions();

    connOpts.setCleanSession(true);
    connOpts.setAutomaticReconnect(true);

    /*
     Paho uses 10 as the default max inflight exchanges. This may be a bit too small
     when sending log files, handling stats messages, ping requests ... all at the same.
     */
    connOpts.setMaxInflight(20);

    return connOpts;
}
 

@Test
public void whenCreateIsCalledAndAnErrorOccursThenObserverOnErrorIsCalled()
        throws Throwable {
    this.expectedException.expectCause(isA(MqttException.class));
    final MqttConnectOptions options = Mockito
            .mock(MqttConnectOptions.class);
    final IMqttAsyncClient client = Mockito.mock(IMqttAsyncClient.class);
    Mockito.when(client.connect(Matchers.same(options), Matchers.isNull(),
            Matchers.any(ConnectFactory.ConnectActionListener.class)))
            .thenThrow(new MqttException(
                    MqttException.REASON_CODE_CLIENT_CONNECTED));
    final ConnectFactory factory = new ConnectFactory(client, options);
    final Completable obs = factory.create();
    obs.blockingAwait();
}
 

/**
 * Connect to the maestro broker
 * @throws MaestroConnectionException if unable to connect to the broker
 */
public void connect() throws MaestroConnectionException {
    try {
        if (!mqttClient.isConnected()) {
            final MqttConnectOptions connOpts = MqttClientInstance.getConnectionOptions();

            mqttClient.connect(connOpts);
        }
    }
    catch (MqttException e) {
        throw new MaestroConnectionException("Unable to establish a connection to Maestro: " + e.getMessage(), e);
    }
}
 

@Ignore
@Test
public void whenBrokerIsStoppedThenClientIsDisconnected() throws Throwable {
    
	// Create client with re-connect and dirty sessions
    MqttConnectOptions options = new MqttConnectOptions();
    options.setAutomaticReconnect(false);
    options.setCleanSession(false);
    options.setKeepAliveInterval(1);
    options.setConnectionTimeout(1);
    
    String proxyUrl = "tcp://" + PROXY_HOST + ":" + PROXY_PORT;
	MqttAsyncClient asyncClient = new MqttAsyncClient(proxyUrl, "test-client-id", new MemoryPersistence());
    ObservableMqttClient observableClient = observableClient(asyncClient, options);
    
    // Connect
    observableClient.connect().blockingAwait();
    Assert.assertTrue(observableClient.isConnected());

    // Stop the broker proxy
    this.brokerProxy.disable();
    Thread.sleep(3000);
    Assert.assertFalse(observableClient.isConnected());
 
    // Restart the broker proxy
    this.brokerProxy.enable();
    Thread.sleep(3000);
    Assert.assertFalse(observableClient.isConnected());
    
}
 

public MqttLogger(Map<String, Object> props) throws MqttException {
    String brokerHost = (String) props.get(BROKER_SERVER_PROP_NAME);
    Integer brokerPort = (Integer) props.get(BROKER_PORT_PROP_NAME);
    String brokerAddress = brokerHost + ":" + brokerPort.toString();
    
    String clientId = (String) props.get(CLIENT_ID_PROP_NAME);
    String username = (String)props.get(USERNAME_PROP_NAME);
    String password = (String)props.get(PASSWORD_PROP_NAME);

    topic = (String) props.get(TOPIC_PROP_NAME);
    Integer _qos = (Integer) props.get(QOS_PROP_NAME);
    qos = null == _qos ? DEFAULT_QOS : _qos;
    
    mqttClient = new MqttClient(brokerAddress,
            null == clientId ? DEFAULT_CLIENT_ID : clientId);
    MqttConnectOptions connOpts = new MqttConnectOptions();
    connOpts.setCleanSession(true);
    if (null != username) {
        connOpts.setUserName(username);
        if (null != password) {
            connOpts.setPassword(password.toCharArray());
        }
    }

    log.debug("Connecting to broker: "+brokerAddress);
    mqttClient.connect(connOpts);
    log.debug("Connected");
}
 

@Test
public void whenAutoReconnectThenPahoReconnectsAfterProxyDisable() throws Throwable {
    
    // Create the client
    MqttConnectOptions options = new MqttConnectOptions();
    options.setAutomaticReconnect(true);
    options.setCleanSession(false);
    options.setKeepAliveInterval(1);
    options.setConnectionTimeout(1);
    
    String proxyUrl = "tcp://" + PROXY_HOST + ":" + PROXY_PORT;
    MqttAsyncClient asyncClient = new MqttAsyncClient(proxyUrl, "test-client-id", new MemoryPersistence());
    
    // Connect, publish
    AsyncPahoUtils.connect(asyncClient, options);
    AsyncPahoUtils.publish(asyncClient, "topical", "Test message".getBytes());
    AsyncPahoUtils.subscribe(asyncClient, "topical2", (t, m) -> {});
    Assert.assertEquals(1, broker.getMessages().size());
    
    // Disable proxy
    brokerProxy.disable();
    Thread.sleep(5000);
    
    // Check disconnected
    Assert.assertFalse(asyncClient.isConnected());
    
    // Re-enable
    brokerProxy.enable();
    Thread.sleep(10000);
    AsyncPahoUtils.publish(asyncClient, "topical", "Test message".getBytes());
    
    
    // Check connected
    Assert.assertTrue(asyncClient.isConnected());
    
}