led-bot/lights/request.js

import * as net from 'net';

const hostname = '192.168.1.219';
const port = 29999;

function getBinarySize(string) {
	return Buffer.byteLength(string, 'utf8');
}

export default function req(data, callback, errorCallback) {
	let string_data = JSON.stringify(data);
	let size = getBinarySize(string_data);

	let client = new net.Socket();
	client.connect(port, hostname, () => {
		let res = client.write(size);

		if (res) {
			client.write(string_data);
		}
	});
}