Sessions Across Subdomains in Express

user_553725 0
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I'm using the vhost feature in Express with Node to manage multiple subdomains for my app. The app uses the same session secret and key, and I believe I've used the correct session cookie settings:

cookie: {
          path     : '/',
          domain   : '.example.com',
          httpOnly : false,
          maxAge   : 1000*60*60*24*30*12    //one year(ish)
        }

I set a session variable on my regular site where the subdomain is undefined e.g. http://example.com like so:

req.session.rep_id = rep._id;
res.redirect('https://' + company.name + '.example.com/');

But when I redirect them to subdomain.example.com the session doesn't have the rep_id key set to anything. It seems like the session is getting reset between subdomains. How do I get around this?

vhosts express session-cookies node.js subdomain
2 Answers

Use the .save() method, the callback will ensure that cookie is set then redirect something like-

req.session.rep_id = rep._id;
    req.session.save(()=>{
      res.redirect('https://' + company.name + '.example.com/');
    })
user_3799800
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