node.js - 验证socket.io时无法添加握手参数

Question

我正在使用socket.io V1.2.1并尝试遵循official Socket.io authorization wiki page ，但它似乎有点过时(可能是为 0.9 版本编写的)，因此在进行一些更改后，这是我用于启动服务器和配置身份验证的代码:

server = http.createServer(app)
io = require('socket.io')(server)
global.io = io
global.liveTopicIo = io.of "/live-topic"
server.listen(3100)
io.set 'authorization', (handshakeData, callback)->
    # doing some authentication logic here 
    # & reading 'currentUser'
    if isAuthenticated
        handshakeData.user = currentUser
        callback null, true
    else
        callback null, false

liveTopicIo.on "connection", (socket) ->
  console.log 'user: ', socket.handshake.user
  console.log 'a user connected'

前面的代码打印以下内容

user: undefined

a user connected

那么，为什么我无法向握手数据添加参数？ &如何修复此问题以添加当前用户？

Answer 1

基于the migration notes from 0.9 to 1.x ，授权不应该再依赖于set函数，而应该是一个普通的express中间件，所以它应该是这样的:

liveTopicIo.use (socket, next)->
    # doing some authentication logic here based on the info 
    # from socket.handshake & reading 'currentUser'
    if isAuthenticated
        socket.handshake.user = currentUser
        next()
    else
        next(new Error("Access Denied"))