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John W commented on APLO-400: ----------------------------- [~tabish121] Thanks for the heads up. It turns out this is also a duplicate of another active bug. I thought Apollo Broker was supposed to be the "new world" of ActiveMQ > 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? -- This message was sent by Atlassian JIRA (v6.4.14#64029)