Session variable set in route middleware is not accessible throughout application in nodejs

I am creating REST api's in nodejs with jsonwebtoken for authentication.Problem is I have created my own route middleware which decodes token and sets req.session as well as middleware object property to the decoded token value but I can only access req.session in router.post() method but cannot access that sessiondata property set in middleware function.

Below is my sample code

user.js

 var router=require('express').Router();
 var AuthenticateLib=require('app/libraries/authentication');

 router.post('/updateprofile',AuthenticateLib.verifyToken,function(req,res){
  console.log(req.session); // is accessible over here
  console.log(AuthenticateLib.sessiondata) // prints null
});

authentication.js

  module.exports={
  sessiondata:null,
  verifyToken:function(req,res,next){
           var token = req.headers.authorization;
            return jwt.verifyAsync(token,config.getParam('security.jwtSecret'))
                    .then(decoded => {
                            req.session=decoded;
                            this.sessiondata=decoded;
                            next(); 
                    })
                    .catch(...)
       }}

I created sessiondata property because req object is not avaliable all over application so I thought may be I could require AuthenticateLib's and access sessiondata property in my files wherever I need to access my session.

My aim is that I should be able to access my session data not only in router.post but in any other file in application.

Any help would be appreciated.

via Vibhas