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//! Test a simple IPv4 socket server and client.
//!
//! The client send a message and the server sends one back.
#![cfg(not(any(target_os = "redox", target_os = "wasi")))]
use rustix::net::{
accept, bind_v4, connect_v4, getsockname, listen, recv, send, socket, AddressFamily, Ipv4Addr,
Protocol, RecvFlags, SendFlags, SocketAddrAny, SocketAddrV4, SocketType,
};
use std::sync::{Arc, Condvar, Mutex};
use std::thread;
const BUFFER_SIZE: usize = 20;
fn server(ready: Arc<(Mutex<u16>, Condvar)>) {
let connection_socket =
socket(AddressFamily::INET, SocketType::STREAM, Protocol::default()).unwrap();
let name = SocketAddrV4::new(Ipv4Addr::new(127, 0, 0, 1), 0);
bind_v4(&connection_socket, &name).unwrap();
let who = match getsockname(&connection_socket).unwrap() {
SocketAddrAny::V4(addr) => addr,
_ => panic!(),
};
listen(&connection_socket, 1).unwrap();
{
let (lock, cvar) = &*ready;
let mut port = lock.lock().unwrap();
*port = who.port();
cvar.notify_all();
}
let mut buffer = vec![0; BUFFER_SIZE];
let data_socket = accept(&connection_socket).unwrap();
let nread = recv(&data_socket, &mut buffer, RecvFlags::empty()).unwrap();
assert_eq!(String::from_utf8_lossy(&buffer[..nread]), "hello, world");
send(&data_socket, b"goodnight, moon", SendFlags::empty()).unwrap();
}
fn client(ready: Arc<(Mutex<u16>, Condvar)>) {
let port = {
let (lock, cvar) = &*ready;
let mut port = lock.lock().unwrap();
while *port == 0 {
port = cvar.wait(port).unwrap();
}
*port
};
let addr = SocketAddrV4::new(Ipv4Addr::new(127, 0, 0, 1), port);
let mut buffer = vec![0; BUFFER_SIZE];
let data_socket = socket(AddressFamily::INET, SocketType::STREAM, Protocol::default()).unwrap();
connect_v4(&data_socket, &addr).unwrap();
send(&data_socket, b"hello, world", SendFlags::empty()).unwrap();
let nread = recv(&data_socket, &mut buffer, RecvFlags::empty()).unwrap();
assert_eq!(String::from_utf8_lossy(&buffer[..nread]), "goodnight, moon");
}
#[test]
fn test_v4() {
let ready = Arc::new((Mutex::new(0_u16), Condvar::new()));
let ready_clone = Arc::clone(&ready);
let server = thread::Builder::new()
.name("server".to_string())
.spawn(move || {
server(ready);
})
.unwrap();
let client = thread::Builder::new()
.name("client".to_string())
.spawn(move || {
client(ready_clone);
})
.unwrap();
client.join().unwrap();
server.join().unwrap();
}
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