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Posted to dev@activemq.apache.org by "Krull (JIRA)" <ji...@apache.org> on 2014/08/06 13:27:12 UTC

[jira] [Commented] (AMQ-4543) Client already connected error when connecting to MQTT server a second time

    [ https://issues.apache.org/jira/browse/AMQ-4543?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14087567#comment-14087567 ] 

Krull commented on AMQ-4543:
----------------------------

Hi!

I tried against 5.9.1 and the error is there.

What is the point of throwing an exception if a client tries to connect?

Yours
Felix

> Client already connected error when connecting to MQTT server a second time 
> ----------------------------------------------------------------------------
>
>                 Key: AMQ-4543
>                 URL: https://issues.apache.org/jira/browse/AMQ-4543
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: MQTT
>    Affects Versions: 5.7.0
>         Environment: Win 2008
>            Reporter: Dorde Popovic
>             Fix For: 5.9.0
>
>
> 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
>          if(!client.isConnected()){
> 			client.connect(conOpt);
>         }
>         MqttTopic topic = client.getTopic(topicName);
>         MqttMessage message = new MqttMessage(payload);
>     	message.setQos(qos);
>     	MqttDeliveryToken token = topic.publish(message);
>     	token.waitForCompletion();
>     	client.disconnect();
> Then when again I run client it fails on connect ... I can see log in apache mq log:
>  WARN | Transport Connection to: tcp://127.0.0.1:57354 failed: java.io.IOExcepti
> on: Broker: localhost - Client: test1 already connected from tcp://127.0.0.1:57
> 330
> 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 (https://bugs.eclipse.org/bugs/show_bug.cgi?id=408105) and after investigation their team came to conclusion that this is not on clinet side



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