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https://issues.apache.org/jira/browse/AMQ-6345?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15364518#comment-15364518
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ASF subversion and git services commented on AMQ-6345:
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Commit 6dacef1c9552edbad656c31d784179c2cd179b2e in activemq's branch
refs/heads/master from [~cshannon]
[ https://git-wip-us.apache.org/repos/asf?p=activemq.git;h=6dacef1 ]
https://issues.apache.org/jira/browse/AMQ-6345
The MQTT transport will now throw an exception if a PINGREQ is sent to
the broker if a CONNECT packet has not been received first as the spec
says CONNECT must be the first packet sent.
> [MQTT] ping response without CONNECT
> ------------------------------------
>
> Key: AMQ-6345
> URL: https://issues.apache.org/jira/browse/AMQ-6345
> Project: ActiveMQ
> Issue Type: Bug
> Components: MQTT
> Affects Versions: 5.13.3
> Environment: Ubuntu Linux 14.04
> Reporter: Martin Tappler
> Assignee: Christopher L. Shannon
> Priority: Minor
>
> I am currently investigating the behavior of several MQTT brokers and noticed
> that the ActiveMQ broker responds to PINGREQ packets with PINGRESP packets
> even if no CONNECT packet has been sent before.
> This would be a violation of MQTT-3.1.0-1 and MQTT-4.8.0-1 of MQTT v3.1.1
> while MQTT v3.1 is not that strict about this issue, but does also state
> "When a TCP/IP socket connection is established from a client to a server, a
> protocol level session must be created using a CONNECT flow."
> (http://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html#connect)
> Since ActiveMQ supports MQTT v3.1 according to http://activemq.apache.org/,
> but also MQTT v3.1.1 according to Issue AMQ-4990, I am not sure whether this
> should actually be considered a bug.
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