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
|
use std::time::Duration;
use karyon_core::async_util::sleep;
use karyon_net::{
codec::{Codec, Decoder, Encoder},
tcp, ConnListener, Connection, Endpoint, Result,
};
#[derive(Clone)]
struct NewLineCodec {}
impl Codec for NewLineCodec {
type Item = String;
}
impl Encoder for NewLineCodec {
type EnItem = String;
fn encode(&self, src: &Self::EnItem, dst: &mut [u8]) -> Result<usize> {
dst[..src.len()].copy_from_slice(src.as_bytes());
Ok(src.len())
}
}
impl Decoder for NewLineCodec {
type DeItem = String;
fn decode(&self, src: &mut [u8]) -> Result<Option<(usize, Self::DeItem)>> {
match src.iter().position(|&b| b == b'\n') {
Some(i) => Ok(Some((i + 1, String::from_utf8(src[..i].to_vec()).unwrap()))),
None => Ok(None),
}
}
}
#[tokio::main]
async fn main() {
let endpoint: Endpoint = "tcp://127.0.0.1:3000".parse().unwrap();
let config = tcp::TcpConfig::default();
let listener = tcp::listen(&endpoint, config.clone(), NewLineCodec {})
.await
.unwrap();
tokio::spawn(async move {
if let Ok(conn) = listener.accept().await {
loop {
let msg = conn.recv().await.unwrap();
println!("Receive a message: {:?}", msg);
}
};
});
let conn = tcp::dial(&endpoint, config, NewLineCodec {}).await.unwrap();
conn.send("hello".to_string()).await.unwrap();
conn.send(" world\n".to_string()).await.unwrap();
sleep(Duration::from_secs(1)).await;
}
|
