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#![warn(rust_2018_idioms)]
#![cfg(all(feature = "full", not(target_os = "wasi"), not(miri)))] // Wasi doesn't support bind
// No `socket` on miri.
use std::time::Duration;
use tokio::io::{self, AsyncReadExt, AsyncWriteExt};
use tokio::net::{TcpListener, TcpStream};
use tokio::sync::oneshot::channel;
use tokio_test::assert_ok;
#[tokio::test]
async fn shutdown() {
let srv = assert_ok!(TcpListener::bind("127.0.0.1:0").await);
let addr = assert_ok!(srv.local_addr());
let handle = tokio::spawn(async move {
let mut stream = assert_ok!(TcpStream::connect(&addr).await);
assert_ok!(AsyncWriteExt::shutdown(&mut stream).await);
let mut buf = [0u8; 1];
let n = assert_ok!(stream.read(&mut buf).await);
assert_eq!(n, 0);
});
let (mut stream, _) = assert_ok!(srv.accept().await);
let (mut rd, mut wr) = stream.split();
let n = assert_ok!(io::copy(&mut rd, &mut wr).await);
assert_eq!(n, 0);
assert_ok!(AsyncWriteExt::shutdown(&mut stream).await);
handle.await.unwrap()
}
#[tokio::test]
async fn shutdown_after_tcp_reset() {
let srv = assert_ok!(TcpListener::bind("127.0.0.1:0").await);
let addr = assert_ok!(srv.local_addr());
let (connected_tx, connected_rx) = channel();
let (dropped_tx, dropped_rx) = channel();
let handle = tokio::spawn(async move {
let mut stream = assert_ok!(TcpStream::connect(&addr).await);
connected_tx.send(()).unwrap();
dropped_rx.await.unwrap();
assert_ok!(AsyncWriteExt::shutdown(&mut stream).await);
});
let (stream, _) = assert_ok!(srv.accept().await);
// By setting linger to 0 we will trigger a TCP reset
stream.set_linger(Some(Duration::new(0, 0))).unwrap();
connected_rx.await.unwrap();
drop(stream);
dropped_tx.send(()).unwrap();
handle.await.unwrap();
}
#[tokio::test]
async fn shutdown_multiple_calls() {
let srv = assert_ok!(TcpListener::bind("127.0.0.1:0").await);
let addr = assert_ok!(srv.local_addr());
let (connected_tx, connected_rx) = channel();
let handle = tokio::spawn(async move {
let mut stream = assert_ok!(TcpStream::connect(&addr).await);
connected_tx.send(()).unwrap();
assert_ok!(AsyncWriteExt::shutdown(&mut stream).await);
assert_ok!(AsyncWriteExt::shutdown(&mut stream).await);
assert_ok!(AsyncWriteExt::shutdown(&mut stream).await);
});
let (mut stream, _) = assert_ok!(srv.accept().await);
connected_rx.await.unwrap();
assert_ok!(AsyncWriteExt::shutdown(&mut stream).await);
handle.await.unwrap();
}