import socket, os

after_idle_sec=1; interval_sec=3; max_fails=5
sock = socket.socket()
sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPIDLE, after_idle_sec)
sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPINTVL, interval_sec)
sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPCNT, max_fails)
sock.bind(("127.0.0.1", 8080))
sock.listen(10)

local, addr = sock.accept()
while 1:
	if local.fileno() == -1:
		break