tokio-rustls/tokio-rustls/tests/early-data.rs

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#![cfg(feature = "early-data")]
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use std::io::{ self, BufRead, BufReader, Cursor };
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use std::process::{ Command, Child, Stdio };
use std::net::SocketAddr;
use std::sync::Arc;
use std::marker::Unpin;
use std::pin::{ Pin };
use std::task::{ Context, Poll };
use std::time::Duration;
use tokio::prelude::*;
use tokio::net::TcpStream;
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use tokio::time::delay_for;
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use futures_util::{ future, ready };
use rustls::ClientConfig;
use tokio_rustls::{ TlsConnector, client::TlsStream };
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use std::future::Future;
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struct Read1<T>(T);
impl<T: AsyncRead + Unpin> Future for Read1<T> {
type Output = io::Result<()>;
fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
let mut buf = [0];
ready!(Pin::new(&mut self.0).poll_read(cx, &mut buf))?;
Poll::Pending
}
}
async fn send(config: Arc<ClientConfig>, addr: SocketAddr, data: &[u8])
-> io::Result<TlsStream<TcpStream>>
{
let connector = TlsConnector::from(config)
.early_data(true);
let stream = TcpStream::connect(&addr).await?;
let domain = webpki::DNSNameRef::try_from_ascii_str("testserver.com").unwrap();
let mut stream = connector.connect(domain, stream).await?;
stream.write_all(data).await?;
stream.flush().await?;
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// sleep 1s
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//
// see https://www.mail-archive.com/openssl-users@openssl.org/msg84451.html
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let sleep1 = delay_for(Duration::from_secs(1));
let mut stream = match future::select(Read1(stream), sleep1).await {
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future::Either::Right((_, Read1(stream))) => stream,
future::Either::Left((Err(err), _)) => return Err(err),
future::Either::Left((Ok(_), _)) => unreachable!(),
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};
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stream.shutdown().await?;
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Ok(stream)
}
struct DropKill(Child);
impl Drop for DropKill {
fn drop(&mut self) {
self.0.kill().unwrap();
}
}
#[tokio::test]
async fn test_0rtt() -> io::Result<()> {
let mut handle = Command::new("openssl")
.arg("s_server")
.arg("-early_data")
.arg("-tls1_3")
.args(&["-cert", "./tests/end.cert"])
.args(&["-key", "./tests/end.rsa"])
.args(&["-port", "12354"])
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.stdin(Stdio::piped())
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.stdout(Stdio::piped())
.spawn()
.map(DropKill)?;
// wait openssl server
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delay_for(Duration::from_secs(1)).await;
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let mut config = ClientConfig::new();
let mut chain = BufReader::new(Cursor::new(include_str!("end.chain")));
config.root_store.add_pem_file(&mut chain).unwrap();
config.versions = vec![rustls::ProtocolVersion::TLSv1_3];
config.enable_early_data = true;
let config = Arc::new(config);
let addr = SocketAddr::from(([127, 0, 0, 1], 12354));
let io = send(config.clone(), addr, b"hello").await?;
assert!(!io.get_ref().1.is_early_data_accepted());
let io = send(config, addr, b"world!").await?;
assert!(io.get_ref().1.is_early_data_accepted());
let stdout = handle.0.stdout.as_mut().unwrap();
let mut lines = BufReader::new(stdout).lines();
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let has_msg1 = lines.by_ref()
.any(|line| line.unwrap().contains("hello"));
let has_msg2 = lines.by_ref()
.any(|line| line.unwrap().contains("world!"));
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assert!(has_msg1 && has_msg2);
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Ok(())
}