2 unstable releases
0.2.0 | Jun 7, 2023 |
---|---|
0.1.0 | Jun 3, 2023 |
Used in uki
23KB
447 lines
UDPflow
Stream API for tokio-udp.
TCP-like UDP stream
use tokio::net::UdpSocket;
use tokio::io::{AsyncReadExt, AsyncWriteExt};
use udpflow::{UdpListener, UdpStreamLocal, UdpStreamRemote};
async fn server() {
let addr = "127.0.0.1:5000".parse().unwrap();
let listener = UdpListener::new(addr).unwrap();
loop {
let mut buf = vec![0u8; 0x2000];
let (n, stream, addr) = listener.accept(&mut buf).await.unwrap();
buf.truncate(n);
tokio::spawn(handle(stream, buf));
}
}
async fn handle(mut stream1: UdpStreamLocal, first_packet: Vec<u8>) {
let local = "127.0.0.1:0".parse().unwrap();
let remote = "127.0.0.1:10000".parse().unwrap();
let mut stream2 = UdpStreamRemote::new(local, remote).await.unwrap();
stream2.write_all(&first_packet).await.unwrap();
let mut buf = vec![0u8; 256];
stream1.read(&mut buf).await; stream2.write(&buf).await;
stream2.read(&mut buf).await; stream1.write(&buf).await;
}
Send/Recv framed data
use tokio::net::TcpStream;
use udpflow::UotStream;
use tokio::io::{AsyncReadExt, AsyncWriteExt};
async {
let stream = TcpStream::connect("127.0.0.1:8080").await.unwrap();
let mut stream = UotStream::new(stream);
let mut buf = vec![0u8; 256];
// read a frame
let n = stream.read(&mut buf).await.unwrap();
// write a frame
stream.write_all(&buf[..n]).await;
};
UoT Specification
+------+----------+
| LEN | DATA |
+------+----------+
| 2 | Variable |
+------+----------+
*LEN is a 16-bit unsigned integer in big endian byte order.
Dependencies
~3–11MB
~95K SLoC