import signal
import socket
import sys

def sig_handler(signum, frame):
  print("in signal handler")

socket.setdefaulttimeout(10)
s = socket.socket()
s.bind(("0.0.0.0", int(sys.argv[1])))
s.listen(5)

signal.signal(signal.SIGINT, sig_handler)
signal.siginterrupt(signal.SIGINT, False)

client, addr = s.accept()

client.close()
s.close()