Debug shows JSON but MQTT doesn't trigger

General
1

Hey,

I've had a few MQTTs IN and they work great.

But now, I'm sending via a online PHP Site a MQTT Message to one of my nodes.
When I'm Sending an String for example "start" it works perfectly.

But when I'm sending a JSON to the MQTT IN it doesn't trigger but shows in the DEBUG? What I'm confusing here?

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The JSON which I encoded with PHP is:

"{"subscription":{"id":"c1389533-d679-1334-9065-a4d78855abdb","status":"enabled","type":"channel.follow","version":"1","condition":{"broadcaster_user_id":"90205343"},"transport":{"method":"webhook","callback":"null"},"created_at":"2022-05-06T12:59:11.3793627Z","cost":0},"event":{"user_id":"44444","user_login":"testFromUser","user_name":"testFromUser","broadcaster_user_id":"44444","broadcaster_user_login":"90205343","broadcaster_user_name":"testBroadcaster","followed_at":"2022-05-06T12:59:11.3793627Z"}}"

Thanks for your help

2

What do you mean by "It doesn't trigger"?

The snapshot of your flow only shows the mqtt in and debug nodes.
What else are you expecting to happen?

1 Like
3

I subscribed to this topic "datafromweb/light" with a microcontroller.

I got the message, when the webserver sends a string (over MQTT to this topic) but with the JSON, the MQTT is not recieved. So I meant "trigger" the MQTT message.

Greetings

4

The json you posted is not valid.
the outer quotes are fine but the inner one's should be escaped with \ or replace outer with single quotes.

As it is not a valid json string the php script is probably not sending it.

1 Like
5

Yes perhaps the quotes confuse whichever device sends the Mqtt message. You could try single quotes for the outermost " and ".
(I can't test it, not at my computer).

1 Like
6

Thanks for the replys.

Nodred Debug recievs the JSON. Then I'm trying with PHP to change the JSON...

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7

I'm totally confused. There's a microcontroller, a web server and some device running Node-red.
PHP is running somewhere too

Your message is received in Node-red, but it is not received wherever you have PHP.

I don't see how an mqtt-in node in Node-red is supposed to make the message available to PHP.

8

Thanks 4 your question :slight_smile: So got a new clew what I can test.

I tried now with nodejs to subscribe to this topic and I can recieve it. So Node Red is not the problem :slight_smile:

The JSON is probably to large or whatever... thanks again for your time and your thoughts.

9

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