How it works…

Once we run the program, the HTTP server will start listening locally on port 8080.

Next, browsing http://localhost:8080 will show us the login form, as shown in the following screenshot:

Submitting the form after entering the username Foo and a random password will render the Welcome Foo! message in the browser and create a cookie with the name session, which manages the user login/logout state:

Now, every subsequent request to http://localhost:8080/home will display the Welcome Foo! message in the browser until the cookie with ...

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