mirror of https://github.com/stjepang/smol
42 lines
1012 B
Rust
42 lines
1012 B
Rust
//! A TCP server.
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//!
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//! First start a server:
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//!
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//! ```
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//! cargo run --example tcp-server
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//! ```
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//!
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//! Then start a client:
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//!
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//! ```
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//! cargo run --example tcp-client
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//! ```
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use async_net::{TcpListener, TcpStream};
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use blocking::block_on;
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use futures::io;
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/// Echoes messages from the client back to it.
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async fn echo(mut stream: TcpStream) -> io::Result<()> {
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io::copy(stream.clone(), &mut stream).await?;
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Ok(())
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}
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fn main() -> io::Result<()> {
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block_on(async {
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// Create a listener.
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let listener = TcpListener::bind("127.0.0.1:7000").await?;
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println!("Listening on {}", listener.local_addr()?);
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println!("Now start a TCP client.");
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// Accept clients in a loop.
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loop {
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let (stream, peer_addr) = listener.accept().await?;
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println!("Accepted client: {}", peer_addr);
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// Spawn a task that echoes messages from the client back to it.
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smol::spawn(echo(stream)).detach();
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}
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})
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}
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