Invalid JSON Paylod provided using KEY: discord

[anthonyma94]

I have a persistent endpoint for Discord (/notify/discord). However, I have one specific client (Proxmox backup server webhook) calling it that always ends up with a 400 error, with the following log:

2025-01-03 19:00:22,741 [WARNING] django: NOTIFY - 192.168.12.15 - Invalid JSON Payload provided using KEY: discord
2025-01-03 19:00:22,742 [WARNING] django.request: Bad Request: /notify/discord
[pid: 144|app: 0|req: 2/2] 192.168.12.15 () {30 vars in 402 bytes} [Fri Jan  3 19:00:22 2025] POST /notify/discord => generated 42 bytes in 1 msecs (HTTP/1.1 400) 6 headers in 374 bytes (1 switches on core 0)

I would like to see the contents of the request for troubleshooting but am unable to. I have set LOG_LEVEL=debug and DEBUG=yes.

The following curl works:

curl -X POST -H 'Content-Type: application/json' -d '{"body":"hello world"}' http://192.168.3.10:8000/notify/discord

The same contents within proxmox, however, doesn't:

I don't have a way to see the raw contents on Proxmox's side.

[caronc]

See here on details of the Payload Manipulation.

apprise -b "hello world" "json://192.168.3.10:8000/notify/discord/?:version&:title&:type&:message=body"

Try that and see if it helps?

[anthonyma94]

Proxmox only does HTTP calls, however none of the payload manipulation tactics worked. Still the same error.

[anthonyma94]

I used Wireshark and found something interesting. The API cannot accept a payload when it is encoded with Transfer-Encoding: chunked in the header.

[caronc]

I don't use Proxmox, but the bug appears on its side if curl works fine. You could try submitting it not as JSON but just a FORM.

Maybe you can change it to be a application/x-www-form-urlencoded and then set the body to body=This%20is%20a%20Test?