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Integrate authentication into Node.js / Express.js

This guide shows how to create a simple Express.js application and secure it with authentication powered by Ory. You can use this guide with both The Ory Network and self-hosted Ory software.

This guide is perfect for you if:

  1. You have Express.js installed.
  2. You want to build an app using Express.js.
  3. You want to give access to your application to signed-in users only.

Before you start, watch this video to see the user flow you're going to implement:

info

You can find the code of the sample application here.

Create Express.js app​

First we create a new Express.js project:

mkdir your-project
cd your-project

npx express-generator
npm i

Install Ory SDK​

To interact with Ory's APIs we install the Ory SDK:

npm i --save @ory/client

Install Ory CLI​

The last step is setting up the Ory CLI.

npm i --save @ory/cli

Why do I Need the Ory CLI?​

Ory CLI provides a convenient way to configure and manage projects. Additionally, the CLI contains Ory Proxy - a reverse proxy that rewrites cookies to match the domain your application is currently on.

Ory Proxy is a reverse proxy deployed in front of your application. The Proxy mirrors Ory endpoints on the same domain as the application you're running and rewrites cookies to match the domain your application is currently on.

As a result, the origin of the cookies is set correctly to the domain you run the app on instead of 

<your-project-slug>.projects.oryapis.com

This behavior is necessary to avoid issues with the browser CORS policy.

By using the Proxy, you can easily connect the application you're developing locally to The Ory Network and consume the APIs without the hassle of additional configuration and without the need to self-host any of the Ory Components.

Ory Proxy mirrors Ory's APIs

tip

To learn more about the Ory Proxy, read the dedicated section of the Ory CLI documentation.

Add NPM run script​

Now that the Ory CLI is installed, let's add it as a npm run script to our project:

package.json
{
  "name": "protect-page-login",
  "version": "0.0.0",
  "private": true,
  "scripts": {
    "start": "node ./bin/www",
    "proxy": "ory proxy --no-jwt --port 4000 http://localhost:3000/"
  },
  "dependencies": {

This requires the express app (npm run start) to run on port 3000. The browser / user uses however the port 4000 (http://localhost:4000) to access the app.

Require login to access the home page​

Next we add a session check to the default home page of the example application. The highlighted code is what we added to check whether the user is signed in, and redirect them to the login page if not:

// Copyright © 2022 Ory Corp
// SPDX-License-Identifier: Apache-2.0

var express = require("express")
var router = express.Router()
var sdk = require("@ory/client")

var ory = new sdk.V0alpha2Api(
  new sdk.Configuration({
    basePath:
      process.env.ORY_SDK_URL || "https://playground.projects.oryapis.com",
  }),
)

/* GET home page. */
router.get("/", function (req, res, next) {
  ory
    .toSession(undefined, req.header("cookie"))
    .then(({ data: session }) => {
      res.render("index", {
        title: "Express",
        // Our identity is stored in the session along with other useful information.
        identity: session.identity,
      })
    })
    .catch(() => {
      // If logged out, send to login page
      res.redirect("/.ory/ui/login")
    })
})

module.exports = router

Run your Express.js app​

Great, that's it. Let's run your application. Start the Express.js server

npm run start

and set up your environment variables to connect with Ory's APIs

# This is a public Ory Network Project.
# Don’t submit any personally identifiable information in requests made with this project.
# Sign up to Ory Network at
#
#   https://console.ory.sh/registration
#
# and create a free Ory Network Project to see your own configuration embedded in code samples.
export ORY_SDK_URL=https://{your-project-slug-here}.projects.oryapis.com

Next open a new terminal window and start the Ory Proxy:

npm run proxy

To access the Express.js app through the ORY proxy open http://localhost:4000 in your browser. You are presented with Ory's Sign In page. Let's click on sign up and create your first user.

Go to production​

Going to production with your app is possible in many ways. Whether you deploy it on Kubernetes, AWS, a VM, or a RaspberryPi is up to you. To get your app working with Ory, your app and Ory must be available under the same common domain (e.g. https://ory.example.com and https://www.example.com).

The easiest way to connect Ory to your domain is to connect Ory to a subdomain of yours. You can do this easily by adding a Custom Domain to your project.

With the custom domain set up, you do not need the Ory Proxy anymore and will use the configured custom domain in your SDK calls:

var sdk = require("@ory/client")

var ory = new sdk.V0alpha2Api(
  new sdk.Configuration({
    basePath: "https://ory.example.org",
    baseOptions: {
      // Ensures that cookies are included in CORS requests:
      withCredentials: true,
    },
  }),
)