3 files changed, 199 insertions, 0 deletions
diff --git a/third_party/rust/h2/examples/akamai.rs b/third_party/rust/h2/examples/akamai.rs
new file mode 100644
index 0000000000..788bf3005d
--- /dev/null
+++ b/third_party/rust/h2/examples/akamai.rs
@@ -0,0 +1,82 @@
+use h2::client;
+use http::{Method, Request};
+use tokio::net::TcpStream;
+use tokio_rustls::TlsConnector;
+
+use tokio_rustls::rustls::{OwnedTrustAnchor, RootCertStore, ServerName};
+
+use std::convert::TryFrom;
+use std::error::Error;
+use std::net::ToSocketAddrs;
+
+const ALPN_H2: &str = "h2";
+
+#[tokio::main]
+pub async fn main() -> Result<(), Box<dyn Error>> {
+    let _ = env_logger::try_init();
+
+    let tls_client_config = std::sync::Arc::new({
+        let mut root_store = RootCertStore::empty();
+        root_store.add_trust_anchors(webpki_roots::TLS_SERVER_ROOTS.iter().map(|ta| {
+            OwnedTrustAnchor::from_subject_spki_name_constraints(
+                ta.subject,
+                ta.spki,
+                ta.name_constraints,
+            )
+        }));
+
+        let mut c = tokio_rustls::rustls::ClientConfig::builder()
+            .with_safe_defaults()
+            .with_root_certificates(root_store)
+            .with_no_client_auth();
+        c.alpn_protocols.push(ALPN_H2.as_bytes().to_owned());
+        c
+    });
+
+    // Sync DNS resolution.
+    let addr = "http2.akamai.com:443"
+        .to_socket_addrs()
+        .unwrap()
+        .next()
+        .unwrap();
+
+    println!("ADDR: {:?}", addr);
+
+    let tcp = TcpStream::connect(&addr).await?;
+    let dns_name = ServerName::try_from("http2.akamai.com").unwrap();
+    let connector = TlsConnector::from(tls_client_config);
+    let res = connector.connect(dns_name, tcp).await;
+    let tls = res.unwrap();
+    {
+        let (_, session) = tls.get_ref();
+        let negotiated_protocol = session.alpn_protocol();
+        assert_eq!(Some(ALPN_H2.as_bytes()), negotiated_protocol);
+    }
+
+    println!("Starting client handshake");
+    let (mut client, h2) = client::handshake(tls).await?;
+
+    println!("building request");
+    let request = Request::builder()
+        .method(Method::GET)
+        .uri("https://http2.akamai.com/")
+        .body(())
+        .unwrap();
+
+    println!("sending request");
+    let (response, other) = client.send_request(request, true).unwrap();
+
+    tokio::spawn(async move {
+        if let Err(e) = h2.await {
+            println!("GOT ERR={:?}", e);
+        }
+    });
+
+    println!("waiting on response : {:?}", other);
+    let (_, mut body) = response.await?.into_parts();
+    println!("processing body");
+    while let Some(chunk) = body.data().await {
+        println!("RX: {:?}", chunk?);
+    }
+    Ok(())
+}
diff --git a/third_party/rust/h2/examples/client.rs b/third_party/rust/h2/examples/client.rs
new file mode 100644
index 0000000000..61e237aa3c
--- /dev/null
+++ b/third_party/rust/h2/examples/client.rs
@@ -0,0 +1,52 @@
+use h2::client;
+use http::{HeaderMap, Request};
+
+use std::error::Error;
+
+use tokio::net::TcpStream;
+
+#[tokio::main]
+pub async fn main() -> Result<(), Box<dyn Error>> {
+    let _ = env_logger::try_init();
+
+    let tcp = TcpStream::connect("127.0.0.1:5928").await?;
+    let (mut client, h2) = client::handshake(tcp).await?;
+
+    println!("sending request");
+
+    let request = Request::builder()
+        .uri("https://http2.akamai.com/")
+        .body(())
+        .unwrap();
+
+    let mut trailers = HeaderMap::new();
+    trailers.insert("zomg", "hello".parse().unwrap());
+
+    let (response, mut stream) = client.send_request(request, false).unwrap();
+
+    // send trailers
+    stream.send_trailers(trailers).unwrap();
+
+    // Spawn a task to run the conn...
+    tokio::spawn(async move {
+        if let Err(e) = h2.await {
+            println!("GOT ERR={:?}", e);
+        }
+    });
+
+    let response = response.await?;
+    println!("GOT RESPONSE: {:?}", response);
+
+    // Get the body
+    let mut body = response.into_body();
+
+    while let Some(chunk) = body.data().await {
+        println!("GOT CHUNK = {:?}", chunk?);
+    }
+
+    if let Some(trailers) = body.trailers().await? {
+        println!("GOT TRAILERS: {:?}", trailers);
+    }
+
+    Ok(())
+}
diff --git a/third_party/rust/h2/examples/server.rs b/third_party/rust/h2/examples/server.rs
new file mode 100644
index 0000000000..6d6490db08
--- /dev/null
+++ b/third_party/rust/h2/examples/server.rs
@@ -0,0 +1,65 @@
+use std::error::Error;
+
+use bytes::Bytes;
+use h2::server::{self, SendResponse};
+use h2::RecvStream;
+use http::Request;
+use tokio::net::{TcpListener, TcpStream};
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn Error + Send + Sync>> {
+    let _ = env_logger::try_init();
+
+    let listener = TcpListener::bind("127.0.0.1:5928").await?;
+
+    println!("listening on {:?}", listener.local_addr());
+
+    loop {
+        if let Ok((socket, _peer_addr)) = listener.accept().await {
+            tokio::spawn(async move {
+                if let Err(e) = serve(socket).await {
+                    println!("  -> err={:?}", e);
+                }
+            });
+        }
+    }
+}
+
+async fn serve(socket: TcpStream) -> Result<(), Box<dyn Error + Send + Sync>> {
+    let mut connection = server::handshake(socket).await?;
+    println!("H2 connection bound");
+
+    while let Some(result) = connection.accept().await {
+        let (request, respond) = result?;
+        tokio::spawn(async move {
+            if let Err(e) = handle_request(request, respond).await {
+                println!("error while handling request: {}", e);
+            }
+        });
+    }
+
+    println!("~~~~~~~~~~~ H2 connection CLOSE !!!!!! ~~~~~~~~~~~");
+    Ok(())
+}
+
+async fn handle_request(
+    mut request: Request<RecvStream>,
+    mut respond: SendResponse<Bytes>,
+) -> Result<(), Box<dyn Error + Send + Sync>> {
+    println!("GOT request: {:?}", request);
+
+    let body = request.body_mut();
+    while let Some(data) = body.data().await {
+        let data = data?;
+        println!("<<<< recv {:?}", data);
+        let _ = body.flow_control().release_capacity(data.len());
+    }
+
+    let response = http::Response::new(());
+    let mut send = respond.send_response(response, false)?;
+    println!(">>>> send");
+    send.send_data(Bytes::from_static(b"hello "), false)?;
+    send.send_data(Bytes::from_static(b"world\n"), true)?;
+
+    Ok(())
+}