Saving variables in socket.io across multiple pages

I'm new to node.js and socket.io so some of these questions might seem really silly. With that said, I was trying to develop an application that can store the username between different pages. For example, I set my username to one page. Then I am redirected to another page, but my username is still a variable available on the socket connection.

Here's my basic server setup:

var app = require('express')();
var http = require('http').Server(app);
var io = require('socket.io')(http);

app.get('/set', function(req, res){
    res.sendfile('set.html');
});

app.get('/get', function(req, res){
    res.sendfile('get.html');
});


io.on('connection', function(socket){



});


http.listen(3000, function(){
  console.log('listening on *:3000');
});

      

        
        
        
      

    

My questions:

1.) Can I find out which page the socket is currently on? If so, how?

2.) How can I interact with this information in io.on (...)?

I've tried using session middleware for socket.io and express, but I can't seem to get it to work. I'm sure using sessions is the best way to do this, but I don't know how to implement them. Any suggestions for setting up sessions available through the different pages would be nice too.

Thanks you!