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#![cfg(all(unix, not(target_os = "unknown")))]
use async_std::io;
use async_std::os::unix::net::{UnixDatagram, UnixListener, UnixStream};
use async_std::prelude::*;
use async_std::task;
use std::time::Duration;
const JULIUS_CAESAR: &[u8] = b"
Friends, Romans, countrymen - lend me your ears!
I come not to praise Caesar, but to bury him.
";
#[test]
fn send_recv() -> io::Result<()> {
task::block_on(async {
let (socket1, socket2) = UnixDatagram::pair().unwrap();
socket1.send(JULIUS_CAESAR).await?;
let mut buf = vec![0; 1024];
let n = socket2.recv(&mut buf).await?;
assert_eq!(&buf[..n], JULIUS_CAESAR);
Ok(())
})
}
#[test]
fn into_raw_fd_datagram() -> io::Result<()> {
use async_std::os::unix::io::{FromRawFd, IntoRawFd};
task::block_on(async {
let (socket1, socket2) = UnixDatagram::pair().unwrap();
socket1.send(JULIUS_CAESAR).await?;
let mut buf = vec![0; 1024];
let socket2 = unsafe { UnixDatagram::from_raw_fd(socket2.into_raw_fd()) };
let n = socket2.recv(&mut buf).await?;
assert_eq!(&buf[..n], JULIUS_CAESAR);
Ok(())
})
}
#[test]
fn into_raw_fd_stream() -> io::Result<()> {
use async_std::os::unix::io::{FromRawFd, IntoRawFd};
task::block_on(async {
let (mut socket1, socket2) = UnixStream::pair().unwrap();
socket1.write(JULIUS_CAESAR).await?;
let mut buf = vec![0; 1024];
let mut socket2 = unsafe { UnixStream::from_raw_fd(socket2.into_raw_fd()) };
let n = socket2.read(&mut buf).await?;
assert_eq!(&buf[..n], JULIUS_CAESAR);
Ok(())
})
}
const PING: &[u8] = b"ping";
const PONG: &[u8] = b"pong";
const TEST_TIMEOUT: Duration = Duration::from_secs(3);
#[test]
fn socket_ping_pong() {
let tmp_dir = tempfile::Builder::new()
.prefix("socket_ping_pong")
.tempdir()
.expect("Temp dir not created");
let sock_path = tmp_dir.as_ref().join("sock");
let iter_cnt = 16;
let listener =
task::block_on(async { UnixListener::bind(&sock_path).await.expect("Socket bind") });
let server_handle = std::thread::spawn(move || {
task::block_on(async { ping_pong_server(listener, iter_cnt).await }).unwrap()
});
let client_handle = std::thread::spawn(move || {
task::block_on(async { ping_pong_client(&sock_path, iter_cnt).await }).unwrap()
});
client_handle.join().unwrap();
server_handle.join().unwrap();
}
async fn ping_pong_server(listener: UnixListener, iterations: u32) -> std::io::Result<()> {
let mut incoming = listener.incoming();
let mut buf = [0; 1024];
for _ix in 0..iterations {
if let Some(s) = incoming.next().await {
let mut s = s?;
let n = s.read(&mut buf[..]).await?;
assert_eq!(&buf[..n], PING);
s.write_all(&PONG).await?;
}
}
Ok(())
}
async fn ping_pong_client(socket: &std::path::PathBuf, iterations: u32) -> std::io::Result<()> {
let mut buf = [0; 1024];
for _ix in 0..iterations {
let mut socket = UnixStream::connect(&socket).await?;
socket.write_all(&PING).await?;
let n = async_std::io::timeout(TEST_TIMEOUT, socket.read(&mut buf[..])).await?;
assert_eq!(&buf[..n], PONG);
}
Ok(())
}
#[test]
fn uds_clone() -> io::Result<()> {
task::block_on(async {
let tmp_dir = tempfile::Builder::new()
.prefix("socket_ping_pong")
.tempdir()
.expect("Temp dir not created");
let sock_path = tmp_dir.as_ref().join("sock");
let input = UnixListener::bind(&sock_path).await?;
let mut writer = UnixStream::connect(&sock_path).await?;
let mut reader = input.incoming().next().await.unwrap()?;
writer.write(b"original").await.unwrap();
let mut original_buf = [0; 8];
reader.read(&mut original_buf).await?;
assert_eq!(&original_buf, b"original");
writer.clone().write(b"clone").await.unwrap();
let mut clone_buf = [0; 5];
reader.clone().read(&mut clone_buf).await?;
assert_eq!(&clone_buf, b"clone");
Ok(())
})
}
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