Client:mqttv3,Server:
apache-activemq-5.9.0.redhat-610-20130702.003414-4-bin.zip
code:
String clientId = "mqtt_test";
MqttClient client = new
MqttClient("tcp://localhost:1883",clientId);
CallBack callback = new CallBack();
client.setCallback(callback);
MqttConnectOptions conOptions = new
MqttConnectOptions();
conOptions.setUserName("mqttMessage");
conOptions.setPassword("mqttMessage".toCharArray());
conOptions.setCleanSession(false);
client.connect(conOptions);
String[] topics =
{"topic.test","topic.test1","topic.test2","topic.test"};
client.subscribe(topics);
AMQ Server Errors:
=======
WARN | Async error occurred: javax.jms.JMSException: Durable consumer is in
use
for client: mqtt_test and subscriptionName: mqtt_test topic.test
javax.jms.JMSException: Durable consumer is in use for client: mqtt_test and
subscriptionName: mqtt_test
at
org.apache.activemq.broker.region.TopicRegion.addConsumer(TopicRegion.java:123)
at
org.apache.activemq.broker.region.RegionBroker.addConsumer(RegionBroker.java:390)
at
org.apache.activemq.broker.jmx.ManagedRegionBroker.addConsumer(ManagedRegionBroker.java:229)
at
org.apache.activemq.broker.BrokerFilter.addConsumer(BrokerFilter.java:97)
at
org.apache.activemq.advisory.AdvisoryBroker.addConsumer(AdvisoryBroker.java:76)
at
org.apache.activemq.broker.BrokerFilter.addConsumer(BrokerFilter.java:97)
at
org.apache.activemq.broker.BrokerFilter.addConsumer(BrokerFilter.java:97)
at
org.apache.activemq.broker.BrokerFilter.addConsumer(BrokerFilter.java:97)
at
org.apache.activemq.broker.MutableBrokerFilter.addConsumer(MutableBrokerFilter.java:102)
at
org.apache.activemq.broker.TransportConnection.processAddConsumer(TransportConnection.java:619)
at
org.apache.activemq.command.ConsumerInfo.visit(ConsumerInfo.java:347)
at
org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:329)
at
org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:184)
at
org.apache.activemq.transport.MutexTransport.onCommand(MutexTransport.java:45)
at
org.apache.activemq.transport.mqtt.MQTTInactivityMonitor.onCommand(MQTTInactivityMonitor.java:147)
at
org.apache.activemq.transport.mqtt.MQTTTransportFilter.sendToActiveMQ(MQTTTransportFilter.java:91)
at
org.apache.activemq.transport.mqtt.MQTTProtocolConverter.sendToActiveMQ(MQTTProtocolConverter.java:133)
at
org.apache.activemq.transport.mqtt.MQTTProtocolConverter.onSubscribe(MQTTProtocolConverter.java:325)
at
org.apache.activemq.transport.mqtt.MQTTProtocolConverter.onSubscribe(MQTTProtocolConverter.java:292)
at
org.apache.activemq.transport.mqtt.MQTTProtocolConverter.onMQTTCommand(MQTTProtocolConverter.java:167)
at
org.apache.activemq.transport.mqtt.MQTTTransportFilter.onCommand(MQTTTransportFilter.java:79)
at
org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:83)
at
org.apache.activemq.transport.mqtt.MQTTCodec.processCommand(MQTTCodec.java:114)
at
org.apache.activemq.transport.mqtt.MQTTCodec.parse(MQTTCodec.java:84)
at
org.apache.activemq.transport.mqtt.MQTTNIOTransport.serviceRead(MQTTNIOTransport.java:105)
at
org.apache.activemq.transport.mqtt.MQTTNIOTransport.access$000(MQTTNIOTransport.java:43)
at
org.apache.activemq.transport.mqtt.MQTTNIOTransport$1.onSelect(MQTTNIOTransport.java:66)
at
org.apache.activemq.transport.nio.SelectorSelection.onSelect(SelectorSelection.java:94)
at
org.apache.activemq.transport.nio.SelectorWorker$1.run(SelectorWorker.java:119)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Connect to ActiveMq Server again.
code:
String clientId = "mqtt_test";
MqttClient client = new
MqttClient("tcp://localhost:1883",clientId);
CallBack callback = new CallBack();
client.setCallback(callback);
MqttConnectOptions conOptions = new
MqttConnectOptions();
conOptions.setUserName("mqttMessage");
conOptions.setPassword("mqttMessage".toCharArray());
conOptions.setCleanSession(false);
client.connect(conOptions);
String[] topics = {"topic.test","topic.test1","topic.test2"};
client.subscribe(topics);
ActiveMq Server logs:
WARN | Exception occurred processing:null: javax.jms.JMSException: Durable
consumer is in use for client: mqtt_test and subscriptionName:
mqtt_testtopic.test
WARN | Failed to add Connection ID:alphae6400-4104-1372812313970-2:3,
reason: javax.jms.InvalidClientIDException: Broker: localhost - Client:
mqtt_test already connected from null
The Client(clientId:mqtt_test) can't connect to the AmqServer agian.
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