To see our previous work in action:

1. Run the Socket.IO server first. Open a new terminal and run:

      node middleware-server.js

2. On your web browser, navigate to:

      http://localhost:1337

3. You will see a login form with two fields, username and password
4. Try to log in with random invalid credentials. The following error is displayed:

      invalid credentials 

5. Next, try to log in with johntm as username and any password. The following error is displayed:

      Banned user! 

6. After that, log in with any of the two other valid credentials. For instance, using jingxuan as username and qscwdvb as password. The following title is displayed:

      Connected to /home