How to create a TCP server

Create a TCP server by binding a TcpListener to an address and looping over incoming connections.

use std::net::TcpListener;

fn main() {
    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();

    for stream in listener.incoming() {
        let stream = stream.unwrap();
        println!("Connection established!");
    }
}

Creating a TCP server involves setting up a program that waits for other computers to connect on a specific port. Think of it like a phone operator sitting at a desk, ready to answer calls as they come in. You use this pattern whenever you need to build a service that listens for incoming network requests.