StartupJS

    WebSocket

    StartupJS lets you hook into the underlying HTTP server and upgrade specific paths to WebSocket connections.

    Upgrade a custom endpoint

    import WebSocket from 'ws'

const PATH = '/my-channel'
const wss = new WebSocket.Server({ noServer: true, path: PATH })

startupjsServer({
  // server options
}, (ee, options) => {
  ee.on('beforeStart', ({ server, session }) => {
    server.on('upgrade', (req, socket, head) => {
      if (req.url !== PATH) return
      session(req, {}, () => {
        wss.handleUpgrade(req, socket, head, ws => {
          wss.emit('connection', ws, req)
        })
      })
    })
  })
})

wss.on('connection', (ws, req) => {
  console.log(`User ${req.session.userId} connected`)
})

    The important part is calling session(req, {}, ...) so the upgraded socket shares the same session data as the rest of the app.