use std::env;
use std::net::{SocketAddrV4, TcpStream};
use std::fs::File;
use std::io::{Read, Write};
use std::time::Duration;
use std::thread::sleep;

fn main() {
    let usage = "usgae: multi_client ip:port file multi_nums \nex: ./multi_client 10.0.0.68:5555 /dev/shm/idea 100\n";

    let args:Vec<String> = env::args().collect();

    if args.len() != 4 {
        panic!(usage);
    }

    let server_addr:SocketAddrV4 = args[1].parse().unwrap();
    let file_path = &args[2];
    let multi_nums = &args[3].clone();
    let mut connects:Vec<TcpStream> = Vec::new();

    let mut file = File::open(file_path).unwrap();
    let mut file_buf:[u8; 1024] = [0; 1024];

    for _i in 0..multi_nums.parse::<u32>().unwrap(){
        connects.push(TcpStream::connect(server_addr).unwrap());
    }

    sleep(Duration::new(60, 0));

    while file.read(&mut file_buf).unwrap() != 0{
        for mut connect in &connects {
            connect.write(&file_buf).unwrap();
        }
    }
}