Simple HelloWorld bleno iBeacon test app

helloWorld-gatt.js

var bleno = require('bleno');

var uuid = 'B9407F30F5F8466EAFF925556B57FE6D';
var major = 0;
var minor = 0;
var measuredPower = -59;
var data = new Buffer('HelloWorld');

bleno.on('stateChange', function(state) {
  if (state === 'poweredOn') {
    bleno.startAdvertisingIBeacon(uuid, major, minor, measuredPower);
    console.log('Advertising');
  } else {
    bleno.stopAdvertising();
    console.log('Stopped Advertising');
  }
});

bleno.on('startAdvertising', function(err){
  if (!err) {
    bleno.setServices([
      new bleno.PrimarySerivce({
        uuid: 'B9407F30F5F8466EAFF925556B57FE6D',
        characteristics : [
          new bleno.Characteristic({
            uuid: 'bb9a18a633564f4ca5b5-19a738bc3ae9',
            properties: ['read', 'writeWithoutResponse'],
            onReadRequest: function(offset, callback) {
              if (offset > data.length) {
                callback(bleno.Characteristic.RESULT_INVALID_OFFSET);
              } else {
                callback(bleno.Characteristic.RESULT_SUCCESS, data.slice(offset));
              }
            },
            onWriteRequest: function(newData, offset, withoutResponse, callback) {
              if (offset > 0) {
                callback(bleno.Characteristic.RESULT_INVALID_OFFSET);
              } else {
                console.log(newData.toString('utf8'));
                callback(bleno.Characteristic.RESULT_SUCCESS);
              }
            }
          })
        ]
      })
    ]);
  }
});