express-session react-router 怎么相互交流

使用express-session和react-router，后台生成session成功，但是不知道怎么让react-router使用这个session来判断（或者说如何让react-router接受各种在server.js的参数，比如判断用户名/是否登陆成功，返回给react的一个渲染位置，比如title）

server.js

// session
app.use(cookieParser());
app.use(session({
    secret: 'dw4f4fFv4gduf6wSG4hsdb7A',
    name: 'IamSession',
    cookie: {maxAge: 800000 },
    resave: false,
    saveUninitialized: true,
}));
// POST /api/login
app.post('/api/login', function(req, res) {
    console.log(req.body.email);
    // console.log(req.body.password);
    // console.log(req.body.captcha);
    var email = req.body.email;
    console.log(email);
    var password = req.body.password;
    var captcha = req.body.captcha;
    async.waterfall([
    function(callback) {
      User.findOne({ email: email }, function(err, user) {
        if (err) return res.statue(500).send({message: err});
        if (user) {
          console.log(user);
          return res.status(409).send({ message: user.email + ' is already in the database.' });
        }
        callback(err, email);
      });
    }
]);

});


//react-router
app.use(function(req, res) {

  Router.run(routes, req.path, function(Handler) {
    var html = React.renderToString(React.createElement(Handler));
    var page = swig.renderFile('views/index.html', { html: html});
    res.send(page);
  });
});

app/routes.js

import React from 'react';
import {Route} from 'react-router';
import App from './components/App';
import Index from './components/Index';
import Login from './components/Login';
import Regist from './components/Regist';



export default (
  <Route handler={App}>
    <Route path='/' handler={Index} />
    <Route path='/login' handler={Login} />
    <Route path='/regist' handler={Regist} />
  </Route>
);

app/main.js

import React from 'react';
import Router from 'react-router';
import routes from './routes';

Router.run(routes, Router.HistoryLocation, function(Handler) {
  React.render(<Handler />, document.getElementById('app'));
});

views/index.html

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8"/>
  <meta http-equiv="X-UA-Compatible" content="IE=edge"/>
  <meta name="viewport" content="width=device-width, initial-scale=1"/>
  <title>{{title}}</title>
  <link rel="stylesheet" href="/css/main.css"/>
</head>
<body>
<div id="app">{{ html|safe }}</div>
<script src="/socket.io/socket.io.js"></script>
<script src="/js/vendor.js"></script>
<script src="/js/vendor.bundle.js"></script>
<script src="/js/bundle.js"></script>
</body>
</html>

既然选择了react 之类的mvvm，就应抛弃session等概念
打个比方，如果你开发一个android app 你会用session吗，
用开发android或ios客户端的方法去开发react vue 之类的应用，
以上是初学mvvm的我个人理解，不到之处还望海涵？

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