How to get the buffer response from tokio tungstein

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1 
#[tokio::main]
async fn main(){
    let listener = TcpListener::bind("127.0.0.1:7878").await.unwrap();
    while let Ok((stream, _address)) = listener.accept().await {
        // println!("{}", address.to_string());
        // Arc::clone(&postgres);
        handle_connection(stream).await;
    }
async fn handle_connection(mut stream: TcpStream) {
    let mut req = accept_async(stream).await.unwrap();
    // println!("{:?}", &req.get_config());
    println!("{:?}", &req.get_mut());
    println!("{:?}", &req.get_ref());

    if let Some(msg) = recv.next().await {
        // println!("{:?}", msg);
        if let Ok(msg) = msg {
            let msg = msg.to_text();
            if let Ok(msg) = msg {
                println!("{}", msg)
            }
        }
    }
}