backup.rs

use std::io::prelude::*;
use std::io::{stdout, stdin};
use std::fmt;
use std::net::{IpAddr, Ipv4Addr};
use std::net::TcpStream;
use std::net::TcpListener;


//Message Size
const BUFFER_SIZE: usize = 4;


fn main() {
    //Listener
    let ip = IpAddr::V4(Ipv4Addr::new(10, 240, 200, 171));
    let port: u32 = 7777;
    //Sender
    let target_ip = IpAddr::V4(Ipv4Addr::new(130, 240, 200, 93));
    let target_port: u32 = 7777;
    //let ip = IpAddr::V4(Ipv4Addr::new(127,0,0,1));
    //let port: u32 = 7878;
    //Sender
    //let target_ip = IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1));
    //let target_port: u32 = 7878;

    loop {
        print!("Please choose function:\n1. Send\n2. Receive\n====> ");
        stdout().flush().unwrap();
        let mut choice = String::new();
        stdin().read_line(&mut choice).expect("Incorrect input");
        let choice: u32 = match choice.trim().parse() {
            Ok(num) => num,
            Err(_) => continue,
        };

        print!("You picked: ");
        match choice {
            1 =>  { println!("Send!\nSending data...");
                sender(target_ip, target_port);
                println!("Data has been sent!\n");
            }
            2 => { println!("Listen!\nListening for data...");
                listener(ip, port);
                println!("Data has been listened to!\n");
            }
            _ => println!("Incorrect option!\n"),
        }
    }
    
    listener(ip, port);
    //sender(target_ip, target_port);
}


// Done
fn sender(ip: IpAddr, port: u32) {
    
    //Sets up connection.
	let mut stream = TcpStream::connect(format!("{}:{}", ip, port)).unwrap();
    let response = "This is a test sentence and will have only been successfully transmitted \
    if the text on screen show three x:es in a row at the very end. This marks the end of the test value. xxx";

    stream.write(response.as_bytes()).unwrap(); //Sends TCP data
    stream.flush().unwrap();
}


//Listens to TCP stream for data to be Printed in Console.
fn listener(ip: IpAddr, port: u32){
    // Set up the listener to an IP and a Port.