Function proxy_relay::relay_split

pub async fn relay_split<'a, LR: ?Sized, LW: ?Sized, RR: ?Sized, RW: ?Sized>(
    lr: &'a mut LR, 
    lw: &'a mut LW, 
    rr: &'a mut RR, 
    rw: &'a mut RW
) -> Result<(u64, u64)> where
    LR: AsyncRead + Unpin,
    LW: AsyncWrite + Unpin,
    RR: AsyncRead + Unpin,
    RW: AsyncWrite + Unpin,