Cannot share the session data to socket.

[leo4707]

Hi, i am try to use middleware to check if user have auth to connect. I follow the document to create("https://socket.io/how-to/use-with-express-session"), but i still cannot get the username in socket.request.session.

When user enter right account and password, i record the username

req.session.username= username;

And check if username in session.username, but username doesn't in session

sessionMiddleware = session({
    secret: 'secretkey',
    rolling: true,
    saveUninitialized: false,
    resave: true, 
    cookie: { maxAge: 15 * 60 * 1000 }
})

const wrap = middleware => (socket, next) => middleware(socket.request, {}, next);

io.use(wrap(sessionMiddleware));

// only allow authenticated users
io.use((socket, next) => {
  const session = socket.request.session;
  if (session.username) {
    next();
  } else {
    next(new Error("unauthorized"));
  }
});

How can i fix it?