Playing with HTTP: Practical Notes and Examples HTTP is the foundation of the web, but it’s easy to overlook how it actually works. This post collects some hands-on notes, experiments, and practical tips for understanding HTTP, inspired by the excellent Udacity client-server communication course. Whether you’re a beginner or just want to refresh your basics, try these out yourself! Playing with HTTP: Practical Notes and Examples These are some hands-on notes and experiments from the excellent Udacity client-server communication course.