how to form a wyoming compatible http request?

[jereskuta]

Hi! I've got the wyoming-piper running in a docker container in a separate machine in my local network. Piper and whisper are working perfectly with home assistant.

I would like to use the existing piper server in my other programs as well, but I can't get the http requests to work.
I've tried
curl -X POST -H 'Content-Type:application/json' -d '{"text": "This is a test."}' -o test.wav 'server.ip.addr:10200'
curl -G --data-urlencode "text=This is a test." -o test.wav server.ip.addr:10200

The request gets sent but I don't recieve the audio file, and the request keeps waiting for the response.
I've tried curl GET&POST in linux and windows and neither seem to work.

Docker is running in an Ubuntu LXC in Proxmox if it makes a difference.

Has anyone got some insight on how to make this work?