Jet —— Web 的轻量级和实时的消息总线

Jet 是一个用于 Web 的轻量级和实时的消息总线。支持浏览器和 Node.js node-jet，提供 Lua 版本 lua-jet 和基于 Arduino 的版本 Arduino-Jet。

示例代码：

var jet = require('node-jet');

var peer = new jet.Peer({
  url: 'ws://jet.nodejitsu.com:80'
});

peer.connect().then(function() {
  console.log('peer is connected to daemon');
});

var machineName = new jet.State('machine/name', 'animal');
machineName.on('set', function(newName) {
  setMachineName(newName); // does something appropriate
});

peer.add(machineName).then(function() {
  console.log('machine/name has been added to daemon');
}).catch(function(err) {
  console.log('could not add machine/name to daemon', err);
});

// add a state
var cpuLoad = new jet.State('cpu/load', readCpuLoad());

peer.add(cpuLoad).then(function() {
  // async post new value
  setTimeout(function () {
    cpuLoad.value(readCpuLoad());
  },3000);
});

添加方法：

// add a method
var greet = new jet.Method('greet');
greet.on('call', function(name) {
    if (name.first === 'John') {
      throw 'John is a bad guy!';
    }
    var greeting = 'Hello ' + name.first + ' ' + name.last;
    console.log(greeting);
    return greeting;
});

peer.add(greet);

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