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From "John W (JIRA)" <j...@apache.org>
Subject [jira] [Created] (APLO-400) Connecting with paho.mqtt.client python lib does not work and causes NullPointer java error
Date Thu, 02 Nov 2017 15:46:00 GMT
John W created APLO-400:
---------------------------

             Summary: Connecting with paho.mqtt.client python lib does not work and causes
NullPointer java error
                 Key: APLO-400
                 URL: https://issues.apache.org/jira/browse/APLO-400
             Project: ActiveMQ Apollo
          Issue Type: Bug
          Components: apollo-mqtt
    Affects Versions: 1.7.1
         Environment: Ubuntu 16.04 server x86_64
            Reporter: John W
            Priority: Major


Was getting a `[Errno 54] Connection reset by peer` error on my python frontend which wasn't
useful so I checked my connection log and found this:
2017-11-02 11:24:23,919 MQTT connection '/192.168.1.122:49730' error: Internal Server Error:
java.lang.NullPointerException

That lead me to take a look at the stacktrace:

{code:java}
2017-11-02 11:24:23,919 | WARN  | stackref=15f7965f9e0
java.lang.NullPointerException
        at org.apache.activemq.apollo.mqtt.MqttProtocolHandler.on_mqtt_connect(MqttProtocolHandler.java:443)
        at org.apache.activemq.apollo.mqtt.MqttProtocolHandler$9.call(MqttProtocolHandler.java:410)
        at org.apache.activemq.apollo.util.UnitFn1.apply(Scala2JavaHelper.scala:41)
        at org.apache.activemq.apollo.mqtt.MqttProtocolHandler.on_transport_command(MqttProtocolHandler.java:377)
        at org.apache.activemq.apollo.broker.BrokerConnection.on_transport_command(Connection.scala:144)
        at org.apache.activemq.apollo.broker.Connection$$anon$1.onTransportCommand(Connection.scala:71)
        at org.fusesource.hawtdispatch.transport.TcpTransport.drainInbound(TcpTransport.java:709)
        at org.fusesource.hawtdispatch.transport.TcpTransport$9.run(TcpTransport.java:770)
        at org.fusesource.hawtdispatch.internal.SerialDispatchQueue.run(SerialDispatchQueue.java:100)
        at org.fusesource.hawtdispatch.internal.pool.SimpleThread.run(SimpleThread.java:77)
{code}


Any idea what this is?



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