Function send_path 

pub async fn send_path<S, F>(
    stream: &mut S,
    path: &Path,
    header: FileTransferHeader,
    limits: TransferLimits,
    on_progress: F,
) -> Result<(), TransferError>
where
    S: AsyncRead + AsyncWrite + Unpin,
    F: FnMut(u64, u64),