old_contents: var express = require('express');
  var contract = require("./contract/index.js");
  
  
  // Create a new Express application.
  var app = express();
  
  var port = process.env.port || 8080;
  var address = process.env.address || '0.0.0.0';
  
  app.use(require('cookie-parser')());
  app.use(require('body-parser').urlencoded({ extended: true }));
  app.use(require('express-session')({ secret: 'Microsoft BlockchainSckool darkchain', resave: true, saveUninitialized: true }));
  
  //public folder 
  app.use('/', express.static('public/app'));
  
  app.get('/profile',
    function(req, res){
      res.status(200).json({user: req.user});
    });
  
  app.get('/api/list',
    function(req, res){
      res.status(200).json({list: 'list'});
    });
  
  app.get('/eth/address',  
    function(req, res){
      var address = contract.test();
      res.status(200).json(address);
    });
  
  app.listen(port);
  
new_contents: var express = require('express');
  var contract = require("./contract/index.js");
  
  
  // Create a new Express application.
  var app = express();
  
  var port = process.env.port || 8080;
  var address = process.env.address || '0.0.0.0';
  
  app.use(require('cookie-parser')());
  app.use(require('body-parser').urlencoded({ extended: true }));
  app.use(require('express-session')({ secret: 'Microsoft BlockchainSckool darkchain', resave: true, saveUninitialized: true }));
  
  //public folder 
  app.use('/', express.static('public/app'));
  
  app.get('/profile',
    function(req, res){
      res.status(200).json({user: req.user});
    });
  
  app.get('/api/list',
    function(req, res){
      res.status(200).json({list: 'list'});
    });
  
  app.get('/eth/address',  
    function(req, res){
      var address = contract.test();
      res.status(200).json('Contract address: [' + address + "]");
    });
  
  app.listen(port);
  
subject: Add contract + 9