Samsung TV Remote Control Node.js Script

samsung_remote.js

const net = require('net');

//
// A Node.js port of this original Gist: https://gist.github.com/danielfaust/998441
// To find hosts on the network: nmap -Pn -p55000 192.168.12.1/24
//
// Note: This is for Samsung TVs circa 2012-2015 that use a service running on port 55000
//       Samsung TV's circa 2016 and later use a WebSocket service on port 8001 which is different
//

const src    = '192.168.12.1';       // IP of our virtual remote control (doesn't seem to be really used)
const mac    = '36-58-d1-4e-65-47';  // MAC of our remote (used for the access control confirmation)
const remote = 'node remote';        // Name of our remote (shown for access control confirmation and in General -> Wireless Remote Control)
const dst    = '192.168.12.237';     // IP of TV
const app    = 'node';               // Name of app (iPhone app reports: iphone..iapp.samsung)
const tv     = 'UN60F8000';          // TV model (iPhone app reports: iphone.LE32C650.iapp.samsung)

const chr = (i) => String.fromCharCode(i);
const b64 = (s) => Buffer.from(s).toString('base64');

const send = (pkt) => {
  const socket = new net.Socket();
  socket.connect(55000, dst, () => { socket.end(pkt); });
};

// Authorize new remote (call this and authorize the remote on your TV before calling push)
const auth = () => {
  const msg = chr(0x64) + chr(0x00)
    + chr(b64(src).length) + chr(0x00) + b64(src)
    + chr(b64(mac).length) + chr(0x00) + b64(mac)
    + chr(b64(remote).length) + chr(0x00) + b64(remote);
  const pkt = chr(0x00)
    + chr(app.length) + chr(0x00) + app
    + chr(msg.length) + chr(0x00) + msg;
  send(pkt);
};

// Send a button press
const push = (key) => {
  const msg = chr(0x00) + chr(0x00) + chr(0x00)
    + chr(b64(key).length) + chr(0x00) + b64(key);
  const pkt = chr(0x00)
    + chr(tv.length) + chr(0x00) + tv
    + chr(msg.length) + chr(0x00) + msg;
  send(pkt);
};

auth();
// push('KEY_MENU');

Key names are similar to those supported by LIRC. I published a very simple MQTT to Samsung TV bridge here: https://github.com/Stanback/samsung2mqtt