Is there a way to use AsyncReadBody and indicate the total content length?

[t-rapp]

In some of the responses returned from my axum-http server application I have a virtual data source implementing tokio::io::AsyncRead returning audio and video media data. When I wrap that source with axum_extra::body::AsyncReadBody the HTTP response seems to use chunked transfer encoding without a total content-length header. Within client applications (media players) this leads to an unknown total length of the file. Thus seeking in the client is either disabled or leads to wrong results until the full file is transferred.

Is there a way to use AsyncReadBody without chunked transfer encoding and including the Content-Length header? Will award bonus points if there is a way to support byte range requests on top of that :)

[davidpdrsn]

Nothing built in (though maybe there should be). Your best option is to implement your own http_body::Body type that wraps your async read body and overrides Body::size_hint

[t-rapp]

Thanks for the pointers. Will take a deeper look at these types.

[t-rapp]

Implemented my own version of axum_extra::body::AsyncReadBody with tracking of remaining bytes inspired by the implementation of http_body::Limited. My version of size_hint() returns SizeHint::with_exact(remaining) and the content-length header is part of the response now.