fastwebsockets how to end client calls and avoid Error in websocket connection Unexpected EOF

pub async fn connect() -> Result<FragmentCollector<Upgraded>> {
    let stream = TcpStream::connect("127.0.0.1:9001").await?;

    let req = Request::builder()
        .method("GET")
        .uri("http://127.0.0.1:9001")
        .header("Host", "localhost:9001")
        .header(UPGRADE, "websocket")
        .header(CONNECTION, "upgrade")
        .header(
            "Sec-Websocket-Key",
            fastwebsockets::handshake::generate_key()
        )
        .header("Sec-Websocket-Version", "13")
        .body(Body::empty())?;

    let ws_result = handshake::client(&SpawnExecutor, req, stream).await;
    match ws_result {
        Ok((ws, _)) => {
            Ok(FragmentCollector::new(ws))
        },
        Err(err) => {
            Err(err.into())
        }
    }    
}
async fn main() {
    let mut ws = connect().await.unwrap();

    let message = String::from("hello world");
    let binding = message.clone();
    let message = binding.as_bytes();

    _ = ws.write_frame(Frame::text(Payload::from(message))).await;

    _ = ws.write_frame(Frame::close(1000, &[]));
}