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extern crate env_logger;
extern crate futures;
extern crate tokio;
extern crate tokio_io;
use std::net::TcpStream;
use std::thread;
use std::io::{Read, Write, BufReader, BufWriter};
use futures::Future;
use futures::stream::Stream;
use tokio_io::io::copy;
use tokio::net::TcpListener;
macro_rules! t {
($e:expr) => (match $e {
Ok(e) => e,
Err(e) => panic!("{} failed with {:?}", stringify!($e), e),
})
}
#[test]
fn echo_server() {
const N: usize = 1024;
drop(env_logger::try_init());
let srv = t!(TcpListener::bind(&t!("127.0.0.1:0".parse())));
let addr = t!(srv.local_addr());
let msg = "foo bar baz";
let t = thread::spawn(move || {
let mut s = t!(TcpStream::connect(&addr));
let t2 = thread::spawn(move || {
let mut s = t!(TcpStream::connect(&addr));
let mut b = vec![0; msg.len() * N];
t!(s.read_exact(&mut b));
b
});
let mut expected = Vec::<u8>::new();
for _i in 0..N {
expected.extend(msg.as_bytes());
assert_eq!(t!(s.write(msg.as_bytes())), msg.len());
}
(expected, t2)
});
let clients = srv.incoming().take(2).collect();
let copied = clients.and_then(|clients| {
let mut clients = clients.into_iter();
let a = BufReader::new(clients.next().unwrap());
let b = BufWriter::new(clients.next().unwrap());
copy(a, b)
});
let (amt, _, _) = t!(copied.wait());
let (expected, t2) = t.join().unwrap();
let actual = t2.join().unwrap();
assert!(expected == actual);
assert_eq!(amt, msg.len() as u64 * 1024);
}
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