java.net.ConnectException: Connection refused: connect

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Root Cause Analysis

  1. java.net.ConnectException

    Connection refused: connect

    at java.net.DualStackPlainSocketImpl.waitForConnect()
  2. Java RT
    Socket.connect
    1. java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
    2. java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
    3. java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
    4. java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
    5. java.net.AbstractPlainSocketImpl.connect(Unknown Source)
    6. java.net.PlainSocketImpl.connect(Unknown Source)
    7. java.net.SocksSocketImpl.connect(Unknown Source)
    8. java.net.Socket.connect(Unknown Source)
    8 frames
  3. org.eclipse.paho
    ClientComms$ConnectBG.run
    1. org.eclipse.paho.client.mqttv3.internal.TCPNetworkModule.start(TCPNetworkModule.java:70)
    2. org.eclipse.paho.client.mqttv3.internal.ClientComms$ConnectBG.run(ClientComms.java:590)
    2 frames
  4. Java RT
    Thread.run
    1. java.lang.Thread.run(Unknown Source)
    1 frame