"Request failed with status code 400"

[djpole]

I have various Shelly Plug Plus S (model with power meter). I use Node-Red, and I control the relay state with a function with the next code:

msg.payload = {
method: "Switch.Set",
parameters: {
id: 0,
on: true
}
}
return msg;

This always worked perfect, but some weeks ago it fails: the switch doesn´t change the status and I get the response "Request failed with status code 400" in the console. I have made no change in my flows, so I don´t know why it fails.

I don´t know what to do. Please help.

[djpole]

Nobody with the same problem???

[windkh]

Sorry for delay ... will check on the next Weekend

[chultquist]

I started seeing the same issue a week or two ago. Is there anything we can do/provide to help debug this? I upgrade node-red-contrib-shelly and that didn't help either - my version at the moment is 11.7.4.

[chultquist]

As a workaround - I just solved this by using an http-request node to call the rpc/Switch.Set endpoint on the device with {"id": 0, "on": true} as the payload (to turn on; change to false to turn off). That has solved things for me.

[windkh]

@chultquist I can not reproduce this issue and thus I can not fix it. If you can let's work together.

[chultquist]

@windkh sure, happy to try and help if I can. Do you have any tips on what I can do? I could for e.g. hack the code in node_modules and add some extra logging. I'll try that when I have a chance - it might only be next week unfortunately.

[windkh]

You could install visual code. Then we can attach the debugger

[windkh]

@chultquist let me know when we can arrange a meeting

[ahartman]

I just hooked up a brand new Shelly Gen3 plugS with firmware 1.7.5 and the 'Switch.Set' call works perfectly.
Regards, Hartman