Curious why await request.get_json() returns None with chunked transfer encoding but await request.data works?

[space88man]

Situation: client POST'ing using chunked transfer encoding. with either uvicorn/hypercorn frontend with a Quart ASGI app.

When I use await request.get_json() it always returns None but await request.data will work and
get the full payload. I can't control the client ATM.

Is this the expected behaviour?

I'm actually ok with json.loads(...request.data...) but curious about the difference in behaviour - if it matters the payload is normally very small and completed in the first chunk.

[catwell]

The most likely possibility to me is that the client does not set the JSON mimetype. What happens if you do request.get_json(force=true)?