old_contents: var express = require('express');
  var app = module.exports = express();
  var configure = require('./config/env');
  var mongoose = require('mongoose');
  var Comment = require('./models/comment');
  
  configure(app);
  
  var ensureRequestComesFromRightDomain = function(req, res, next) {
    if (req.hostname === req.param('domain')) {
      return next();
    }
    if (req.hostname === '127.0.0.1') {
      return next();
    }
    res.send(403);
  };
  
  app.get('/', function(req, res) {
    res.send('Hello World');
  });
  
  app.get('/db', function(req, res) {
    res.send((mongoose.connection.readyState === 1) ? 200 : 503);
  });
  
  app.get('/:domain/:reference/comments', ensureRequestComesFromRightDomain, function(req, res) {
    Comment.find(
      {domain: req.param('domain'), reference: req.param('reference')},
      function(err, comments) {
        if (err) {
          return res.send(500);
        }
        res.status(200).json(comments);
      }
    );
  });
  
  app.post(
    '/:domain/:reference/comments',
    ensureRequestComesFromRightDomain,
    require('body-parser').json(),
    require('body-parser').urlencoded(),
    function(req, res) {
      Comment.create(
        { domain: req.param('domain'),
          reference: req.param('reference'),
          author: req.body.author,
          text: req.body.text,
        },
        function(err, comment) {
          if (err) {
            if (err.name === 'ValidationError') {
              return res.status(400).json(err.errors);
            }
            return res.send(500);
          }
          res
            .status(201)
            .location(comment.location())
            .json(comment);
        }
      );
    }
  );
  
  app.use(express.static(__dirname +
    (process.env.NODE_ENV === 'dist' ? '/../client-dist' : '/../client')
  ));
  
  
  if (require.main === module) {
    mongoose.connect(app.get('db'), function() {
      var server = app.listen(3000, function() {
        console.log('Listening on port %d', server.address().port);
      });
    });
  }
  
new_contents: var express = require('express');
  var app = module.exports = express();
  var configure = require('./config/env');
  var mongoose = require('mongoose');
  var Comment = require('./models/comment');
  
  configure(app);
  
  var ensureRequestComesFromRightDomain = function(req, res, next) {
    if (req.hostname === req.param('domain')) {
      return next();
    }
    if (req.hostname === '127.0.0.1') {
      return next();
    }
    res.send(403);
  };
  
  app.get('/', function(req, res) {
    res.send('Hello World');
  });
  
  app.get('/db', function(req, res) {
    res.send((mongoose.connection.readyState === 1) ? 200 : 503);
  });
  
  app.get('/:domain/:reference/comments', ensureRequestComesFromRightDomain, function(req, res) {
    Comment.find(
      {domain: req.param('domain'), reference: req.param('reference')},
      function(err, comments) {
        if (err) {
          return res.send(500);
        }
        res.status(200).json(comments);
      }
    );
  });
  
  app.post(
    '/:domain/:reference/comments',
    ensureRequestComesFromRightDomain,
    require('body-parser').json(),
    require('body-parser').urlencoded({extended: false}),
    function(req, res) {
      Comment.create(
        { domain: req.param('domain'),
          reference: req.param('reference'),
          author: req.body.author,
          text: req.body.text,
        },
        function(err, comment) {
          if (err) {
            if (err.name === 'ValidationError') {
              return res.status(400).json(err.errors);
            }
            return res.send(500);
          }
          res
            .status(201)
            .location(comment.location())
            .json(comment);
        }
      );
    }
  );
  
  app.use(express.static(__dirname +
    (process.env.NODE_ENV === 'dist' ? '/../client-dist' : '/../client')
  ));
  
  
  if (require.main === module) {
    mongoose.connect(app.get('db'), function() {
      var server = app.listen(3000, function() {
        console.log('Listening on port %d', server.address().port);
      });
    });
  }
  
subject: Remove deprecation warning from body-parser