1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
use {
super::util::*,
anyhow::Context,
interprocess::os::unix::udsocket::{UdStream, UdStreamListener},
std::{
io::{self, BufRead, BufReader, Read, Write},
net::Shutdown,
sync::{mpsc::Sender, Arc},
},
};
static SERVER_MSG: &str = "Hello from server!\n";
static CLIENT_MSG: &str = "Hello from client!\n";
pub(super) fn run_with_namegen(namegen: NameGen) {
drive_server_and_multiple_clients(
move |snd, nc| server(snd, nc, namegen, false),
|nm| client(nm, false),
);
drive_server_and_multiple_clients(
move |snd, nc| server(snd, nc, namegen, true),
|nm| client(nm, true),
);
}
fn server(
name_sender: Sender<String>,
num_clients: u32,
mut namegen: NameGen,
shutdown: bool,
) -> 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);
let mut buffer = String::with_capacity(128);
for _ in 0..num_clients {
let mut conn = match listener.accept() {
Ok(c) => BufReader::new(c),
Err(e) => {
eprintln!("Incoming connection failed: {}", e);
continue;
}
};
if shutdown {
conn.read_to_string(&mut buffer)
} else {
conn.read_line(&mut buffer)
}
.context("Socket receive failed")?;
conn.get_mut()
.write_all(SERVER_MSG.as_bytes())
.context("Socket send failed")?;
if shutdown {
conn.get_mut()
.shutdown(Shutdown::Write)
.context("Shutdown of writing end failed")?;
}
assert_eq!(buffer, CLIENT_MSG);
buffer.clear();
}
Ok(())
}
fn client(name: Arc<String>, shutdown: bool) -> TestResult {
let mut buffer = String::with_capacity(128);
let conn = UdStream::connect(name.as_str()).context("Connect failed")?;
let mut conn = BufReader::new(conn);
conn.get_mut()
.write_all(CLIENT_MSG.as_bytes())
.context("Socket send failed")?;
if shutdown {
conn.get_mut()
.shutdown(Shutdown::Write)
.context("Shutdown of writing end failed")?;
}
if shutdown {
conn.read_to_string(&mut buffer)
} else {
conn.read_line(&mut buffer)
}
.context("Socket receive failed")?;
assert_eq!(buffer, SERVER_MSG);
Ok(())
}
|
