I am being told that this is not a JSON string. {"topic":"ALARM/A2","payload":{"message":"Node Configuration not set","source":{"id":"493eaac7.a0d6ec","type":"function","name":"Button Colour","count":1}},"qos":0,"retain":false,"_msgid":"15668b8e.75c464","ttl":0,"_queuetimestamp":1598820842167,"_que…

Well, thanks all. I've book marked it and shall use it in future. (Ok, silly me. Got the message I posted and the site says it IS a JSON message.) So why is/was the MQTT IN node complaining?

(PS: forgive me @bakman2 , sorry to pull you up on that - i respect your abilities & I know very well you know the difference but this statement is somewhat inaccurate and misleading) EDIT: I may have misread your post @bakman2 - i'm not sure now :thinking: I might have written too quickly …

I'll have to keep looking at that then. But thanks. I am sure I am sending messages with / in them.

[image] Trying_to_learn: I am sure I am sending messages with / in them. How are you generating the string in the first place? If you are using, for example, the MQTT out node to convert a string or object to JSON then it should handle the escaping. Similarly if you are generating the strin…

[image] bakman2: is it possible that you are sending messages that contain double quotes or slashes for example Forward slashes do not need escaping, only backslash.

Oh poo. I think I may have opened a lot of worm cans without knowing it. Not wanting to sound argumentative, but I am wanting to understand this. And ok, that could be taken the wrong way. No, I am being honest. The reason I took so long to post (and edit) the reply is I was chasing a few more…

[image] Trying_to_learn: If what is written above is true, and I understand it, this flow should NOT work. Why would you think it wont work? You send a payload of ... { "RTC":6456005, "local":6462011, "time":"2020-08-31 17:57:15", "payload":6006, "foo":[1,2,3], "text…

[image] bakman2: is it possible that you are sending messages that contain double quotes or slashes for example, it could fail to parse it because those characters need to be escaped. Please...

Where are these "bad" MQTT messages being created though? outside of node-red? If (for example) a library (say on an ESP32 or a python app) is not taking care of escaping payloads then it is possible to send (from elsewhere) bad data that cannot be parsed back into an object. Your example was poi…

Try this... [{"id":"6f3eedcf.0ccdf4","type":"inject","z":"d0c7a908.ca3ac8","name":"","topic":"","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":260,"y":220,"wires":[["7448c565.963f9c"]]},{"id":"82b02fb0.99526","type":"mqtt out","z":"d0c7a908.ca3ac8","name…

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Is this a JSON string?

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Trying_to_learn 31 August 2020 09:40 13

Please...

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Is this a JSON string?

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