nodejs copy cookies for internal app request

I am using Express 3.x and connect-mongo and the request module

My App has some middleware that ensures the external request has an access_token. The access_token is checked and a some data is stored in the session. I then want to make an internal call to a url within the application, but the internal call gets issued a new session (as its a separate request from the users browser request). What I want to do is somehow copy the Express signed cookies across into the internal request() so that the middleware performs actions based on the original external session id. I have tried passing a cookie jar into the request object but it doesnt seem to support signed cookies very well. Any ideas how I can do this?

/* Middleware to check access tokens */
app.all("/*", requireAuth, function(req, res, next) {
  next(); 
});

function requireAuth(req,res,next) {

if ( req.query.access_token && !req.session ) {

   // Check the access token and popualte stuff in the session
   req.session.somedata = 'test';

   // Then call a url internall to do something

   // My issue is that this INTERNAL request below gets a new session Id
   // so it itself returns Not Authorised as its hits the same code

   request({
       url: 'someurlinside-this-node-app',
       method: "GET"
   }, function _callback(err, serviceres, body) {
       next();
   });

 }else{
     res.send('Not Authorised');
 }

}