Simulation of an LB130 or sth. else

Hi, currently i'm trying to simulate a TP-Link smart lamp, because want to use own hardware which can talk with the tp-link protocol (hopefully including the cloud functionality)

I don't know what i'm doing wrong here, because i can see the try of the discovery in the commandline of the Kasa android app. The virtual Lamp won't be found in the app, but the search request is arrived in the simulation. Something seems to be missing. Can you please take a look?

const dgram = require('dgram');

const socket = dgram.createSocket({
  type: 'udp4',
  reuseAddr: true
});

function encrypt(input, firstKey) {
  if (typeof firstKey === 'undefined') firstKey = 0xAB;
  var buf = new Buffer(input.length); // node v6: Buffer.alloc(input.length)

  var key = firstKey;
  for (var i = 0; i < input.length; i++) {
    buf[i] = input.charCodeAt(i) ^ key;
    key = buf[i];
  }
  return buf;
};

function decrypt(input, firstKey) {
  if (typeof firstKey === 'undefined') firstKey = 0x2B;
  var buf = new Buffer(input); // node v6: Buffer.from(input)
  var key = firstKey;
  var nextKey;
  for (var i = 0; i < buf.length; i++) {
    nextKey = buf[i];
    buf[i] = buf[i] ^ key;
    key = nextKey;
  }
  return buf;
};

socket.on('error', function (err) {
  console.error('Client UDP error');
  console.trace(err);
  socket.close();
}.bind(this));

const systemData = {
  "system":{
  "get_sysinfo":{
  "sw_ver":"1.4.3 Build 170504 Rel.144921",
  "hw_ver":"1.0",
  "model":"LB130(EU)",
  "description":"Smart Wi-Fi LED Bulb with Color Changing",
  "alias":"TestLamp",
  "mic_type":"IOT.SMARTBULB",
  "dev_state":"normal",
  "mic_mac":"50C7xxxxxxxx",
  "deviceId":"8012459DB0CAAAB0FACF605DC492xxxxxxxxxxxx",
  "oemId":"D5C424D3C480911C980Exxxxxxxxxxxx",
  "hwId":"111E35908497A05512Exxxxxxxxxxxxxx",
  "is_factory":false,
  "disco_ver":"1.0",
  "ctrl_protocols":{
    "name":"Linkie",
    "version":"1.0"
  },
    "light_state":{
    "on_off":0,
    "dft_on_state":{
      "mode":"normal",
      "hue":120,
      "saturation":100,
      "color_temp":0,
      "brightness":10
    }
  },
  "is_dimmable":1,
  "is_color":1,
  "is_variable_color_temp":1,
  "preferred_state":[
    {
      "index":0,
      "hue":0,
      "saturation":0,
      "color_temp":2700,
      "brightness":50
    },
    {
      "index":1,
      "hue":0,
      "saturation":75,
      "color_temp":0,
      "brightness":100
    },
    {
      "index":2,
      "hue":120,
      "saturation":75,
      "color_temp":0,
      "brightness":100
    },
    {
      "index":3,
      "hue":240,
      "saturation":75,
      "color_temp":0,
      "brightness":100
    }
    ],
      "rssi":-21,
      "active_mode":"none",
      "heapsize":332364,
      "err_code":0
    }
  }
};

const lightDetailsData = {
  "on_off": 1,
  "mode": "normal",
  "hue": 120,
  "saturation": 100,
  "color_temp": 0,
  "brightness": 100,
  "err_code": 0
};

const lightStateData = {
  "on_off": 1,
  "mode": "normal",
  "hue": 120,
  "saturation": 100,
  "color_temp": 0,
  "brightness": 100,
  "err_code": 0
};

socket.on('message', function (msg, rinfo) {
  const decryptedMsg = decrypt(msg).toString('ascii');
  //const request = JSON.parse(decryptedMsg);

  var data = '{}';

  if(decryptedMsg.indexOf('"system":{"get_sysinfo":{') != -1) {
    data = JSON.stringify(systemData);
  }
  else
  if (decryptedMsg.indexOf('"smartlife.iot.smartbulb.lightingservice":{"get_light_details":{') != -1) {
    data = JSON.stringify(lightDetailsData);
  }
  else
  if (decryptedMsg.indexOf('"smartlife.iot.smartbulb.lightingservice":{"transition_light_state":{') != -1) {
    data = JSON.stringify(lightStateData);
  }

  console.log('REQUEST:\n' + decryptedMsg);
  console.log('FROM:\n' + rinfo.address + ':' + rinfo.port);
  console.log('ANSWER:\n' + data);

  var msgBuf = encrypt(data);

  socket.send(msgBuf, 0, msgBuf.length, rinfo.port, rinfo.address);

}.bind(this));

socket.bind(9999);

Thank you in advance for your help!

softScheck / tplink-smartplug

Simulation of an LB130 or sth. else #17