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use {
super::util::*,
anyhow::Context,
interprocess::os::unix::udsocket::{UdStream, UdStreamListener},
std::{
io,
sync::{mpsc::Sender, Arc},
},
};
const SERVER_MSG_1: &[u8] = b"Server message 1";
const SERVER_MSG_2: &[u8] = b"Server message 2";
const CLIENT_MSG_1: &[u8] = b"Client message 1";
const CLIENT_MSG_2: &[u8] = b"Client message 2";
pub(super) fn run_with_namegen(namegen: NameGen) {
drive_server_and_multiple_clients(move |snd, nc| server(snd, nc, namegen), client);
}
fn server(name_sender: Sender<String>, num_clients: u32, mut namegen: NameGen) -> TestResult {
let (name, listener) = namegen
.find_map(|nm| {
let l = match UdStreamListener::bind(&*nm) {
Ok(l) => l,
Err(e) if e.kind() == io::ErrorKind::AddrInUse => return None,
Err(e) => return Some(Err(e)),
};
Some(Ok((nm, l)))
})
.unwrap()
.context("Listener bind failed")?;
let _ = name_sender.send(name);
for _ in 0..num_clients {
let conn = match listener.accept() {
Ok(c) => c,
Err(e) => {
eprintln!("Incoming connection failed: {}", e);
continue;
}
};
let (mut buf1, mut buf2) = ([0; CLIENT_MSG_1.len()], [0; CLIENT_MSG_2.len()]);
let read = conn
.recv(&mut buf1)
.context("First socket receive failed")?;
assert_eq!(read, CLIENT_MSG_1.len());
assert_eq!(&buf1[0..read], CLIENT_MSG_1);
let read = conn
.recv(&mut buf2)
.context("Second socket receive failed")?;
assert_eq!(read, CLIENT_MSG_2.len());
assert_eq!(&buf2[0..read], CLIENT_MSG_2);
let written = conn
.send(SERVER_MSG_1)
.context("First socket send failed")?;
assert_eq!(written, SERVER_MSG_1.len());
let written = conn
.send(SERVER_MSG_2)
.context("Second socket send failed")?;
assert_eq!(written, SERVER_MSG_2.len());
}
Ok(())
}
fn client(name: Arc<String>) -> TestResult {
let (mut buf1, mut buf2) = ([0; CLIENT_MSG_1.len()], [0; CLIENT_MSG_2.len()]);
let conn = UdStream::connect(name.as_str()).context("Connect failed")?;
let written = conn
.send(CLIENT_MSG_1)
.context("First socket send failed")?;
assert_eq!(written, CLIENT_MSG_1.len());
let written = conn
.send(CLIENT_MSG_2)
.context("Second socket send failed")?;
assert_eq!(written, CLIENT_MSG_2.len());
let read = conn
.recv(&mut buf1)
.context("First socket receive failed")?;
assert_eq!(read, SERVER_MSG_1.len());
assert_eq!(&buf1[0..read], SERVER_MSG_1);
let read = conn
.recv(&mut buf2)
.context("Second socket receive failed")?;
assert_eq!(read, SERVER_MSG_2.len());
assert_eq!(&buf2[0..read], SERVER_MSG_2);
Ok(())
}
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