import concurrent.futures
import itertools
import socket
import sys
from threading import Lock
from time import time


SERVER = "159.69.4.2"
PORT = 1337
NUM_WORKERS = 100

start = time()
lock = Lock()
count = itertools.count()


def worker():
    while True:
        try:
            with lock:
                i = next(count)
            with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
                sock.connect((SERVER, PORT))
                data = str(i).encode("ascii")
                sock.sendall(data)
                response = sock.recv(1024)
                print(int(response.decode("ascii")), float(time() - start))
        except KeyboardInterrupt:
            break
        except Exception as e:
            print(e, file=sys.stderr)


with concurrent.futures.ThreadPoolExecutor(max_workers=NUM_WORKERS) as executor:
    for _ in range(NUM_WORKERS):
        executor.submit(worker)