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Hypertext Transfer Protocol (HTTP)

Hypertext Transfer Protocol (HTTP) is an application protocol used for transmitting hypermedia documents, such as HTML, across the internet. It facilitates communication between web browsers and servers, allowing users to request and receive web pages and resources. HTTP operates on a client-server model, where the client sends requests and the server returns responses, enabling a seamless browsing experience.



Use Case

  1. Scenario: A user wants to access a website to shop online.
  2. Process:
  3. The user enters the URL of the shopping site into their web browser.
  4. The browser constructs an HTTP request, specifying the method (typically GET) and the resource (the desired webpage).
  5. Request Transmission:
  6. The HTTP request is sent over the internet to the server hosting the website, using TCP/IP protocols for reliable transmission.
  7. Server Response:
  8. Upon receiving the request, the server processes it and sends back an HTTP response. This response typically includes a status code (e.g., 200 OK) and the requested content (HTML, CSS, JavaScript, images, etc.).
  9. Rendering:
  10. The browser receives the HTTP response and renders the webpage for the user to view and interact with.
  11. User Interaction:
  12. As the user navigates the site (clicks links, adds items to a cart), the browser continues to send HTTP requests to the server, and the server responds appropriately.
  13. Conclusion:
  14. Through HTTP, the user enjoys a responsive and interactive shopping experience, highlighting its essential role in web communication.

This detailed use case illustrates how HTTP operates at the core of web interactions, enabling seamless access to information and services on the internet.


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