#![warn(rust_2018_idioms)] #![cfg(all(feature = "full", not(tokio_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] 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::::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); }