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#![warn(rust_2018_idioms)]
#![cfg(all(feature = "full", not(target_os = "wasi")))] // Wasi does not support bind()
use tokio::net::TcpListener;
use tokio_test::assert_ok;
use std::io::prelude::*;
use std::net::TcpStream;
use std::thread;
#[tokio::test]
#[cfg_attr(miri, ignore)] // No `socket` on miri.
async fn echo_server() {
const N: usize = 1024;
let srv = assert_ok!(TcpListener::bind("127.0.0.1:0").await);
let addr = assert_ok!(srv.local_addr());
let msg = "foo bar baz";
let t = thread::spawn(move || {
let mut s = assert_ok!(TcpStream::connect(addr));
let t2 = thread::spawn(move || {
let mut s = assert_ok!(TcpStream::connect(addr));
let mut b = vec![0; msg.len() * N];
assert_ok!(s.read_exact(&mut b));
b
});
let mut expected = Vec::<u8>::new();
for _i in 0..N {
expected.extend(msg.as_bytes());
let res = assert_ok!(s.write(msg.as_bytes()));
assert_eq!(res, msg.len());
}
(expected, t2)
});
let (mut a, _) = assert_ok!(srv.accept().await);
let (mut b, _) = assert_ok!(srv.accept().await);
let n = assert_ok!(tokio::io::copy(&mut a, &mut b).await);
let (expected, t2) = t.join().unwrap();
let actual = t2.join().unwrap();
assert!(expected == actual);
assert_eq!(n, msg.len() as u64 * 1024);
}
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