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Description
Is your feature request related to a problem? Please describe.
I need a way to notify my API users that the uploaded file is too large, before it is being uploaded completely.content_size_limit isn't what I need.
Describe the solution you'd like
I'd like to set a file size limit. Returning a 413 with Payload Too Large before it being uploaded completely
Describe alternatives you've considered
I can't use a reverseproxy because of the configurability in my app.