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|
//! Test a simple Unix-domain socket server and client.
//!
//! The client sends lists of integers and the server sends back sums.
// This test uses `AF_UNIX` with `SOCK_SEQPACKET` which is unsupported on macOS.
#![cfg(not(any(
target_os = "ios",
target_os = "macos",
target_os = "redox",
target_os = "wasi",
)))]
// This test uses `DecInt`.
#![cfg(feature = "itoa")]
#![cfg(feature = "fs")]
use rustix::fs::{cwd, unlinkat, AtFlags};
use rustix::io::{read, write};
use rustix::net::{
accept, bind_unix, connect_unix, listen, socket, AddressFamily, Protocol, SocketAddrUnix,
SocketType,
};
use rustix::path::DecInt;
use std::path::Path;
use std::str::FromStr;
use std::sync::{Arc, Condvar, Mutex};
use std::thread;
const BUFFER_SIZE: usize = 20;
fn server(ready: Arc<(Mutex<bool>, Condvar)>, path: &Path) {
let connection_socket = socket(
AddressFamily::UNIX,
SocketType::SEQPACKET,
Protocol::default(),
)
.unwrap();
let name = SocketAddrUnix::new(path).unwrap();
bind_unix(&connection_socket, &name).unwrap();
listen(&connection_socket, 1).unwrap();
{
let (lock, cvar) = &*ready;
let mut started = lock.lock().unwrap();
*started = true;
cvar.notify_all();
}
let mut buffer = vec![0; BUFFER_SIZE];
'exit: loop {
let data_socket = accept(&connection_socket).unwrap();
let mut sum = 0;
loop {
let nread = read(&data_socket, &mut buffer).unwrap();
if &buffer[..nread] == b"exit" {
break 'exit;
}
if &buffer[..nread] == b"sum" {
break;
}
sum += i32::from_str(&String::from_utf8_lossy(&buffer[..nread])).unwrap();
}
write(&data_socket, DecInt::new(sum).as_bytes()).unwrap();
}
unlinkat(cwd(), path, AtFlags::empty()).unwrap();
}
fn client(ready: Arc<(Mutex<bool>, Condvar)>, path: &Path, runs: &[(&[&str], i32)]) {
{
let (lock, cvar) = &*ready;
let mut started = lock.lock().unwrap();
while !*started {
started = cvar.wait(started).unwrap();
}
}
let addr = SocketAddrUnix::new(path).unwrap();
let mut buffer = vec![0; BUFFER_SIZE];
for (args, sum) in runs {
let data_socket = socket(
AddressFamily::UNIX,
SocketType::SEQPACKET,
Protocol::default(),
)
.unwrap();
connect_unix(&data_socket, &addr).unwrap();
for arg in *args {
write(&data_socket, arg.as_bytes()).unwrap();
}
write(&data_socket, b"sum").unwrap();
let nread = read(&data_socket, &mut buffer).unwrap();
assert_eq!(
i32::from_str(&String::from_utf8_lossy(&buffer[..nread])).unwrap(),
*sum
);
}
let data_socket = socket(
AddressFamily::UNIX,
SocketType::SEQPACKET,
Protocol::default(),
)
.unwrap();
connect_unix(&data_socket, &addr).unwrap();
write(&data_socket, b"exit").unwrap();
}
#[test]
fn test_unix() {
let ready = Arc::new((Mutex::new(false), Condvar::new()));
let ready_clone = Arc::clone(&ready);
let tmp = tempfile::tempdir().unwrap();
let path = tmp.path().join("soccer");
let send_path = path.to_owned();
let server = thread::Builder::new()
.name("server".to_string())
.spawn(move || {
server(ready, &send_path);
})
.unwrap();
let send_path = path.to_owned();
let client = thread::Builder::new()
.name("client".to_string())
.spawn(move || {
client(
ready_clone,
&send_path,
&[
(&["1", "2"], 3),
(&["4", "77", "103"], 184),
(&["5", "78", "104"], 187),
(&[], 0),
],
);
})
.unwrap();
client.join().unwrap();
server.join().unwrap();
}
|
