What is HTTP

• HTTP is the movie-rental kiosk interface—how you browse, check out, and return movies.
• Client is the customer at the kiosk; Server is the machine’s inventory database.
• An HTTP Request is your on-screen selection:
• Method → Action button (“GET” to view details, “PUT” to update return date, “POST” to add a new rental);
• Path → Movie ID (“movie/1234”);
• Version → API version (“v1.1”).
• Request Headers are the extra options you set (“HD quality,” “Family-friendly,” “Two-day rental”).
• The HTTP Response is the screen feedback and printed receipt:
• Status Code → Result (“200 Success,” “404 Not Found,” “500 Out of Service”);
• Response Headers → Receipt details (“Due date,” “Price”);
• Response Body → Movie info and checkout confirmation.

Credit