86 lines
2.4 KiB
Rust
86 lines
2.4 KiB
Rust
use h2::client;
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use http::{Method, Request};
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use tokio::net::TcpStream;
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use tokio_rustls::TlsConnector;
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use tokio_rustls::rustls::{OwnedTrustAnchor, RootCertStore, ServerName};
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use std::convert::TryFrom;
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use std::error::Error;
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use std::net::ToSocketAddrs;
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const ALPN_H2: &str = "h2";
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#[tokio::main]
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pub async fn main() -> Result<(), Box<dyn Error>> {
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let _ = env_logger::try_init();
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let tls_client_config = std::sync::Arc::new({
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let mut root_store = RootCertStore::empty();
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root_store.add_server_trust_anchors(webpki_roots::TLS_SERVER_ROOTS.0.iter().map(|ta| {
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OwnedTrustAnchor::from_subject_spki_name_constraints(
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ta.subject,
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ta.spki,
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ta.name_constraints,
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)
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}));
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let mut c = tokio_rustls::rustls::ClientConfig::builder()
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.with_safe_defaults()
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.with_root_certificates(root_store)
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.with_no_client_auth();
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c.alpn_protocols.push(ALPN_H2.as_bytes().to_owned());
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c
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});
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// Sync DNS resolution.
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let addr = "http2.akamai.com:443"
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.to_socket_addrs()
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.unwrap()
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.next()
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.unwrap();
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println!("ADDR: {:?}", addr);
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let tcp = TcpStream::connect(&addr).await?;
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let dns_name = ServerName::try_from("http2.akamai.com").unwrap();
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let connector = TlsConnector::from(tls_client_config);
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let res = connector.connect(dns_name, tcp).await;
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let tls = res.unwrap();
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{
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let (_, session) = tls.get_ref();
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let negotiated_protocol = session.alpn_protocol();
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assert_eq!(
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Some(ALPN_H2.as_bytes()),
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negotiated_protocol.as_ref().map(|x| &**x)
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);
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}
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println!("Starting client handshake");
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let (mut client, h2) = client::handshake(tls).await?;
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println!("building request");
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let request = Request::builder()
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.method(Method::GET)
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.uri("https://http2.akamai.com/")
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.body(())
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.unwrap();
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println!("sending request");
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let (response, other) = client.send_request(request, true).unwrap();
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tokio::spawn(async move {
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if let Err(e) = h2.await {
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println!("GOT ERR={:?}", e);
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}
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});
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println!("waiting on response : {:?}", other);
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let (_, mut body) = response.await?.into_parts();
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println!("processing body");
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while let Some(chunk) = body.data().await {
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println!("RX: {:?}", chunk?);
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}
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Ok(())
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}
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