hub 0.1.0

tcp/udp hub
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

use super::LinkTrait;
use core::fmt;
use std::io;
use std::net::{IpAddr, Ipv4Addr, SocketAddr};
use std::sync::Arc;
use tokio::net::UdpSocket;

pub struct UdpClient {
    addr: SocketAddr,
    socket: UdpSocket,
    data: [u8; 4096],
}
impl UdpClient {
    pub async fn new(addr: &str, port: u32) -> io::Result<UdpClient> {
        let addr: IpAddr = addr.parse().unwrap();
        let addr: SocketAddr = (addr, port as u16).into();
        let socket = UdpSocket::bind((IpAddr::V4(Ipv4Addr::LOCALHOST), 0)).await?;
        socket.connect(&addr).await?;
        Ok(UdpClient {
            addr,
            socket,
            data: [0; 4096],
        })
    }
}

#[async_trait::async_trait]
impl LinkTrait for UdpClient {
    async fn send(&mut self, msg: &[u8]) -> io::Result<()> {
        let mut len = 0;
        while len < msg.len() {
            len += self.socket.send(&msg[len..]).await?;
        }
        Ok(())
    }
    async fn recv(&mut self) -> io::Result<Arc<Vec<u8>>> {
        let len = self.socket.recv(&mut self.data).await?;
        let data = Arc::new(Vec::from(&self.data[..len]));
        log::info!("{} recv: {:02X?}", self, data);
        Ok(data)
    }
}

impl fmt::Display for UdpClient {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        f.write_fmt(format_args!("UdpClient({:?})", self.addr))
    }
}