Kodi API has been changed in v18 (Leia) such that HTTP POST is required

[cvium]

Expected behaviour:

Updates should work

Actual behaviour:

Error message: JSONRPC failed. Error -32099: Bad client permission

Steps to reproduce:

• Step 1: Call a kodi library scan from a task

Config:

kodi_library:
  action: scan
  category: video
  url: http://192.168.1.214
  port: 80

Details

The kodi API has been changed in v18 Leia and up. In the old API, all requests were HTTP GET (even API calls that update/mutate state). They've finally updated the API to require HTTP POST for updates, but they've completely failed to update the API version or even provide sensible error messages.

https://forum.kodi.tv/showthread.php?tid=324598
https://discuss.flexget.com/t/kodi-plugin-not-working-on-kodi-18/4196

NOTE: I no longer use Kodi, so I'm simply creating an issue based on a forum post to keep track of the issue in case other users begin to experience it.