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  1. ActiveMQ
  2. AMQ-5886

AMQ accepts illegal MQTT protocol level (5, only 3 and 4 are defined)

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      Description

      MQTT spec says:

      [MQTT-3.1.2-2]
      The Server MUST respond to the CONNECT Packet with a CONNACK return code 0x01 (unacceptable protocol level) and then disconnect the Client if the Protocol Level is not supported by the Server.
      [MQTT-3.2.2-5]
      If a server sends a CONNACK packet containing a non-zero return code it MUST then close the Network Connection.

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            • Assignee:
              tabish Timothy A. Bish
              Reporter:
              ckrey Christoph Krey
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