ExpressJS & Websocket & session sharing

Question

I\'m trying to make a chat application based on Node.js. I\'d like to force websocket server (ws library) to using ExpressJS session system. Unfortunately, I\'ve got stuck.

Answer 1

In version 3.2.0 of ws you have to do it a bit differently.

There is a full working example of express session parsing in the ws repo, specifically using a new feature verifyClient.

A very brief usage summary:

const sessionParser = session({
  saveUninitialized: false,
  secret: '$eCuRiTy',
  resave: false
})

const server = http.createServer(app)
const wss = new WebSocket.Server({
  verifyClient: (info, done) => {
    console.log('Parsing session from request...')
    sessionParser(info.req, {}, () => {
      console.log('Session is parsed!')
      done(info.req.session.userId)
    })
  },
  server
})

wss.on('connection', (ws, req) => {
  ws.on('message', (message) => {
    console.log(`WS message ${message} from user ${req.session.userId}`)
  })
})