Rust Programming By Example

Implementing simple chunks of commands

Let's start slowly by first creating a very simple server that sends "hello" to a new client and then closes the connection:

use std::net::TcpListener;
use std::io::Write;

fn main() {
    let listener = TcpListener::bind("0.0.0.0:1234").expect("Couldn't bind this     address...");

    println!("Waiting for clients to connect...");
    for stream in listener.incoming() {
        Ok(stream) => {
            println!("New client!);
            if let Err(_) = stream.write(b"hello") {
                println!("Failed to send hello... :'(");
            }
        }
        _ => {
            println!("A client tried to connect...")
        }
    }
}

Pretty easy, right? As usual, let's explain what the code does:

let listener = TcpListener::bind("0.0.0.0:1234").expect("Couldn't bind this address...");

For those who don't ...