用于socket io实验。服务器端使用的是nodejs，框架是express，使用的语法糖衣是:coffeescript

index.jade

extends layout

block content
  h1= title
  p Welcome to #{title}

layout.jade

doctype 5
html
  head
    title= title
    link(rel='stylesheet', href='/stylesheets/style.css')
    script(src="/socket.io/socket.io.js")
    script(src="/javascripts/zepto.min.js")
    script(src="/javascripts/app.js")
  body
    block content

socket-io-browser-app.coffee

# $show = document.getElementById('show')
show = (data) ->
  $show = $('body')
  console.log $show
  msg = data.hello || data.id
  $show.append "<p>#{msg}</p>"
  return

socket = io.connect 'http://localhost:3000'
socket.on 'news', (data) ->
  console.log data
  show data
  socket.emit 'my other event', {my: 'data'}
  return
socket.on 'random', (data) ->
  show data
return

socket-io-server-app.coffee

###
Module dependencies.
###
express = require("express")
socket_io = require("socket.io")
routes = require("./routes")
user = require("./routes/user")
http = require("http")
path = require("path")
app = express()

app.configure ->
  app.set "port", process.env.PORT or 3000
  app.set "views", __dirname + "/views"
  app.set "view engine", "jade"
  app.use express.favicon()
  app.use express.logger("dev")
  app.use express.bodyParser()
  app.use express.methodOverride()
  app.use app.router
  app.use express.static(path.join(__dirname, "public"))

app.configure "development", ->
  app.use express.errorHandler()

app.get "/", routes.index
app.get "/users", user.list

server = http.createServer(app)
server.listen app.get("port"), ->
  console.log "Express server listening on port " + app.get("port")
io = socket_io.listen server
io.sockets.on 'connection', (socket) ->
  socket.emit 'news', {hello: 'world'}
  setInterval ->
    socket.emit 'random', { id: Math.random() }
    return
  , 1000
  socket.on 'my other event', (data) ->
    console.log(data)
    return
  return