Replace axum with hyper?

[XavDesbordes]

Hi,
Quick question, we have a lot of hyper code already and we would like to reuse all this code for the auth, service and so on via hyper. We manage the routing already.
We aim for a fullstack app.

I am concerned about the function return type from the server to the client. Will we meet many hurdles?

The other approach is instead to have hyper as a (reverse)proxy, only touching headers.. But I would like to reserve this option as a last resort.

Anyone did this already?