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