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MQTT connection Issue

SOLVED
aam
Newbie

MQTT connection Issue

I have created two MQTT things. I have connected both to a public MQBroker -say Mosquito. Some times only one "thing" connection is true, the other "thing" gets disconnected. This happens often. Is there any issue in using same broker/servername for two mqtt thing.

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1 ACCEPTED SOLUTION

Accepted Solutions

Re: MQTT connection Issue

I have the same "Persistence already in use"-problem. I found only two very dirty way to fix that.

  1. Copy the thing that make problems and rename it.
  2. Delete the ValueStream and create a new one.

View solution in original post

5 REPLIES 5

Re: MQTT connection Issue

Hi Anitha Am,

Is there any error received in the logs when one of the thing gets disconnected? And does the thing is in edit mode when it gets disconnected?

Re: MQTT connection Issue

Yes Ankit. I am trying to set a property with a json string '[{"id": "DP2.wer.ias_Start","v": 0}]' in the data change event of  a property using subscription. When event gets triggered a lck file is generated in  Tom Cat log for the thing. Thingworx doesnt allows to update the thing. So I need tomcat to be restarted. The same property assignation works well on a button click.

Re: MQTT connection Issue

Ignore the previous answer. Persistence already in use was the error received in Application log.

Re: MQTT connection Issue

I have the same "Persistence already in use"-problem. I found only two very dirty way to fix that.

  1. Copy the thing that make problems and rename it.
  2. Delete the ValueStream and create a new one.

View solution in original post

Highlighted

MQTT connection Issue

I am trying to implement MQTT using the extension but in my MQTT thing template the "isConnected" never turn "True" it's always "False". I have changed the MQTT servers as well as used the local MQTT server but the issue remains.

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