smol/examples/chat-client.rs

52 lines
1.3 KiB
Rust

//! A TCP chat client.
//!
//! First start a server:
//!
//! ```
//! cargo run --example chat-server
//! ```
//!
//! Then start clients:
//!
//! ```
//! cargo run --example chat-client
//! ```
use std::net::TcpStream;
use smol::{future, io, Async, Unblock};
fn main() -> io::Result<()> {
smol::block_on(async {
// Connect to the server and create async stdin and stdout.
let stream = Async::<TcpStream>::connect(([127, 0, 0, 1], 6000)).await?;
let stdin = Unblock::new(std::io::stdin());
let mut stdout = Unblock::new(std::io::stdout());
// Intro messages.
println!("Connected to {}", stream.get_ref().peer_addr()?);
println!("My nickname: {}", stream.get_ref().local_addr()?);
println!("Type a message and hit enter!\n");
let reader = &stream;
let mut writer = &stream;
// Wait until the standard input is closed or the connection is closed.
future::race(
async {
let res = io::copy(stdin, &mut writer).await;
println!("Quit!");
res
},
async {
let res = io::copy(reader, &mut stdout).await;
println!("Server disconnected!");
res
},
)
.await?;
Ok(())
})
}