src/main.rs


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#![allow(unused_imports)]
use std::{
    io::{Read, Write},
    net::TcpListener,
};

fn main() {
    let listener = TcpListener::bind("127.0.0.1:6379").unwrap();

    for stream in listener.incoming() {
        match stream {
            Ok(mut stream) => {
                let mut buf = [0; 128];
                stream.read(&mut buf).unwrap();
                let request = str::from_utf8(&buf).unwrap();
                for _ in 0..request.matches("PING").count() {
                    stream.write_all(b"+PONG\r\n").unwrap();
                }
            }
            Err(e) => {
                println!("error: {}", e);
            }
        }
    }
}