LoRa Customer Server in node

loraCS.js

var net = require('net');
var server = net.createServer(function(socket) {
	console.log('Listening yo');
	socket.on('data', function(data) {
	    if (data.length === 1 && data[0] === 0x00) {
	        return; // some sort of ping?
	    }

        // so all messages end with 0x00 so skip that
	    var obj = data.toString('utf8', 0, data.length - 1);
	    try {
	        obj = JSON.parse(obj);
	    }
	    catch (ex) {
	        return console.error('Could not parse message', data,
	            data.toString('utf8'), ex);
	    }

        if (obj.app && obj.app.dir === 'up') {
            console.log('Received upstream message from', obj.app.moteeui,
                '(app=' + obj.app.appeui + '), on channel',
                obj.app.userdata.port,
                new Buffer(obj.app.userdata.payload, 'base64'));
        }
        else {
            console.log('Unknown message', obj);
        }
	});
});

server.listen(5000, '0.0.0.0');