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From "Dorde Popovic (JIRA)" <>
Subject [jira] [Created] (AMQ-4543) Client already connected error when connecting to MQTT server a second time
Date Sat, 18 May 2013 08:15:16 GMT
Dorde Popovic created AMQ-4543:

             Summary: Client already connected error when connecting to MQTT server a second
                 Key: AMQ-4543
             Project: ActiveMQ
          Issue Type: Bug
          Components: MQTT
    Affects Versions: 5.7.0
         Environment: Win 2008
            Reporter: Dorde Popovic

I built client that is connecting to Apache MQ set for mqtt. 

Now on first try client establishes the connection with client id = test1, sends message and
closes connection

        MqttTopic topic = client.getTopic(topicName);

        MqttMessage message = new MqttMessage(payload);
    	MqttDeliveryToken token = topic.publish(message);

Then when again I run client it fails on connect ... I can see log in apache mq log:

 WARN | Transport Connection to: tcp:// failed:
on: Broker: localhost - Client: test1 already connected from tcp://

in connection options I have set only setCleanSession(true). Paho client I have downloaded
from site as stable version.

I have first tried to raise an issue with the Eclipse Paho project (
and after investigation their team came to conclusion that this is not on clinet side

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