def run_latency(warmup_time_s, upstream_ip, upstream_port, duration_s, ssl):
switch = Switch(DPID("00:00:00:00:00:00:00:01"), warmup_time_s, upstream_ip, upstream_port, 1, False, ssl)
switch.start()
time.sleep(duration_s)
print("stop!")
switch.stop()
FileWriter().write_results_to_file(switch.get_results())
