mirror of https://github.com/stjepang/smol
42 lines
1016 B
Rust
42 lines
1016 B
Rust
//! A TCP server.
|
|
//!
|
|
//! First start a server:
|
|
//!
|
|
//! ```
|
|
//! cargo run --example tcp-server
|
|
//! ```
|
|
//!
|
|
//! Then start a client:
|
|
//!
|
|
//! ```
|
|
//! cargo run --example tcp-client
|
|
//! ```
|
|
|
|
use std::net::{TcpListener, TcpStream};
|
|
|
|
use smol::{io, Async};
|
|
|
|
/// Echoes messages from the client back to it.
|
|
async fn echo(stream: Async<TcpStream>) -> io::Result<()> {
|
|
io::copy(&stream, &mut &stream).await?;
|
|
Ok(())
|
|
}
|
|
|
|
fn main() -> io::Result<()> {
|
|
smol::block_on(async {
|
|
// Create a listener.
|
|
let listener = Async::<TcpListener>::bind(([127, 0, 0, 1], 7000))?;
|
|
println!("Listening on {}", listener.get_ref().local_addr()?);
|
|
println!("Now start a TCP client.");
|
|
|
|
// Accept clients in a loop.
|
|
loop {
|
|
let (stream, peer_addr) = listener.accept().await?;
|
|
println!("Accepted client: {}", peer_addr);
|
|
|
|
// Spawn a task that echoes messages from the client back to it.
|
|
smol::spawn(echo(stream)).detach();
|
|
}
|
|
})
|
|
}
|