Hello,
I'm trying the Apache Artemis Broker (ver. 1.5.1) for MQTT protocol.
Exactly I'm testing the retained feature for messages of MQTT protocol.
While the broker is up it seems to work well:
a) a client publishes a retained message to a specific topic
b) any client which then subscribes that topic receives the retained message
(any time it re-subscribes the topic it receives the last retained message
...perfect!)
But it happens a strange thing when I restart the broker. And I mean I restart
the broker without any change on configuration: simply I make a
"artemis-service stop" and "artemis-service start". After The broker is up and
running, if a client subscribes the previous topic it still receives the
retained message, but with weird characters appended to it. For new retained
messages published it work well again... but the previous ones (before the
broker restart) are sent all with these weird characters. E.g., the following
is a retained message published before the broker restart:
"test 25 for a retained message 20170110"
And this is exactly how clients get it before the broker restart.
Instead, after broker restart, the same retained message is received by clients
in the following way:
test 25 for a retained message 20170110?
?6$sys.mqtt.retain..cro.test5?&mqtt.message.retain? mqtt.qos.level
Is this my bad configuration (but I don't know ehere)? Or anything else? Or
what?
Someone can help me?
Thanks in advance.
Francesco
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