HTTPS request using lower level client::conn

[panpur]

Hello,

Is there any example available for implementing HTTPS request using lower level client::conn?
I've tried, but getting invalid HTTP version parsed using this code:

        let tls_client_config = std::sync::Arc::new({
            let mut c = rustls::ClientConfig::new();
            c.root_store.add_server_trust_anchors(&webpki_roots::TLS_SERVER_ROOTS);
            c.alpn_protocols.push(ALPN_H2.as_bytes().to_owned());
            c.alpn_protocols.push(ALPN_H11.as_bytes().to_owned());
            c.alpn_protocols.push(ALPN_H1.as_bytes().to_owned());
            c
        });
     
        let connector = TlsConnector::from(tls_client_config);
        let dns_name = DNSNameRef::try_from_ascii_str(url_parts.host_str().unwrap()).unwrap();
        let tls = connector.connect(dns_name, tcp).await.unwrap();
        let client_session = tls.get_ref().1 as &dyn rustls::Session;
        result.ssl_tls_version = Some(format!("{:?}", client_session.get_protocol_version().unwrap()));
            
        let (mut client, conn) = Builder::new().handshake::<_, Body>(tls).await.unwrap();
        result.connect_time = Some(connect_time.elapsed().as_micros() as u64);
        
        conn_handle = tokio::spawn(async move {
            conn.await;
        });
            
        let request = Request::builder()
            .method("GET")
            .uri(url.clone())
            .body(Body::empty())
            .unwrap();

        let response = client.send_request(request).await.unwrap();

Tested with url https://hyper.rs
Thanks

[panpur]

This works fine if I set http2_only(true) in the builder.
But if I remove that & test on secure http/1.1 website, then I'm getting 400 bad request error.

[panpur]

Setting Host header fixed it.