def run_server():
ret = server.serv(port=12345, timeout=3)
assert ret[0]=='127.0.0.1', ret[0]
def test_server_timeout():
s = time.time()
ret = server.serv(port=12345,timeout=1)
e = time.time()
assert close_to(e-s, 1)
assert ret == None
