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//! UDP client.
//!
//! First start the echo server:
//!
//! ```sh
//! $ cargo run --example udp-echo
//! ```
//!
//! Then run the client:
//!
//! ```sh
//! $ cargo run --example udp-client
//! ```
use async_std::io;
use async_std::net::UdpSocket;
use async_std::task;
fn main() -> io::Result<()> {
task::block_on(async {
let socket = UdpSocket::bind("127.0.0.1:8081").await?;
println!("Listening on {}", socket.local_addr()?);
let msg = "hello world";
println!("<- {}", msg);
socket.send_to(msg.as_bytes(), "127.0.0.1:8080").await?;
let mut buf = vec![0u8; 1024];
let (n, _) = socket.recv_from(&mut buf).await?;
println!("-> {}\n", String::from_utf8_lossy(&buf[..n]));
Ok(())
})
}
|
