How to open a bidirectional stream like QUIC using hyper http2 over rustls?

[oo-work]

Opens a bidirectional stream like quinn::connection:Connection.

let (send_stream, recv_stream) = connection.open_bi().await.unwrap();

And he should be able to read and write the exact number of bytes.

    /// Read an exact number of bytes contiguously from the stream.
    ///
    /// See [`read()`] for details. This operation is *not* cancel-safe.
    ///
    /// [`read()`]: RecvStream::read
    pub async fn read_exact(&mut self, buf: &mut [u8]) -> Result<(), ReadExactError> {
        ReadExact {
            stream: self,
            buf: ReadBuf::new(buf),
        }
        .await
    }

    /// Convenience method to write an entire buffer to the stream
    ///
    /// This operation is *not* cancel-safe.
    pub async fn write_all(&mut self, buf: &[u8]) -> Result<(), WriteError> {
        WriteAll { stream: self, buf }.await
    }

I noticed that h2::client::handshake seems to be able to read and write streams separately, but it cannot read or write the exact number of bytes, which is limited by the http2 window size.