node.js - transfer cookies on a server/server request -

in universal app, loose every users cookies on server/server http request. have build small nodejs app reproduce thing:

const fetch = require('isomorphic-fetch'); const bodyparser = require('body-parser'); const cookieparser = require('cookie-parser'); const session = require('express-session');  const server = require('express')();  server.use(bodyparser()); server.use(cookieparser());  server.use(session({     secret: 'foo',     httponly: false }));  server.get('/set-cookies', (req, res) => {   req.session.user = { name: 'john doe' };   res.send('ok'); });  server.get('/a', (req, res) => {   console.log('cookie in = ', req.cookies); // cookies here !    const options = { credentials: 'include' };    fetch('http://localhost:3131/b', options)     .then( () => {       res.send('ok');     }); });  server.get('/b', (req, res) => {   console.log('cookies in b = ', req.cookies); // cookies lost ! how ?   res.sendstatus(200); });  server.listen(3131); 

1) hit /set-cookies 2) hit /a (the cookies here expected)

issue: when /a controller make ajax request /b, won't transfer cookies, the route /b unable authenticate user

how transfer users cookies on every requests ? have heard "cookie jar" couldn't explain is, , didn't find clean explanation on web, if share knowledges that, great !

whatwg-fetch has option send cookies following, doesn't seem work.

fetch('http://localhost:3131/b', {    credentials: 'same-origin' }); 

you can send manually cookie fetch following way.

server.get('/a', (req, res) => {     console.log('cookie in = ', req.cookies); // cookies here !     const options = {         'headers' : {           'cookie': req.headers.cookie         }      };      fetch('http://localhost:3131/b', options)        .then( () => {           res.send('ok');        }); });