Dirty dump of solutions for https://protohackers.com

protohackers-problem-0.rs

use std::io::prelude::*;
use std::net::{TcpListener, TcpStream};

fn handle_client(mut stream: TcpStream) {
    println!("Youpi");
    let mut buffer = Vec::new();
    stream.read_to_end(&mut buffer).unwrap();
    println!("{}", buffer.len());
    // println!("{buffer:?}");
    stream.write(&buffer).unwrap();
}

fn main() -> std::io::Result<()> {
    // ssh -R 8090:localhost:8090 <remote> "socat TCP-LISTEN:8091,fork,bind=0.0.0.0 TCP:localhost:8090"
    let listener = TcpListener::bind("127.0.0.1:8090")?;

    // accept connections and process them serially
    for stream in listener.incoming() {
        handle_client(stream?);
    }
    Ok(())
}