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// run-pass
// ignore-android needs extra network permissions
// ignore-emscripten no threads or sockets support
// ignore-netbsd system ulimit (Too many open files)
// ignore-openbsd system ulimit (Too many open files)
use std::io::prelude::*;
use std::net::{TcpListener, TcpStream};
use std::process;
use std::sync::mpsc::channel;
use std::time::Duration;
use std::thread::{self, Builder};
const TARGET_CNT: usize = 200;
fn main() {
// This test has a chance to time out, try to not let it time out
thread::spawn(move|| -> () {
thread::sleep(Duration::from_secs(30));
process::exit(1);
});
let listener = TcpListener::bind("127.0.0.1:0").unwrap();
let addr = listener.local_addr().unwrap();
thread::spawn(move || -> () {
loop {
let mut stream = match listener.accept() {
Ok(stream) => stream.0,
Err(_) => continue,
};
let _ = stream.read(&mut [0]);
let _ = stream.write(&[2]);
}
});
let (tx, rx) = channel();
let mut spawned_cnt = 0;
for _ in 0..TARGET_CNT {
let tx = tx.clone();
let res = Builder::new().stack_size(64 * 1024).spawn(move|| {
match TcpStream::connect(addr) {
Ok(mut stream) => {
let _ = stream.write(&[1]);
let _ = stream.read(&mut [0]);
},
Err(..) => {}
}
tx.send(()).unwrap();
});
if let Ok(_) = res {
spawned_cnt += 1;
};
}
// Wait for all clients to exit, but don't wait for the server to exit. The
// server just runs infinitely.
drop(tx);
for _ in 0..spawned_cnt {
rx.recv().unwrap();
}
assert_eq!(spawned_cnt, TARGET_CNT);
process::exit(0);
}
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