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HTTP Protocol and how it works.

GitHub - VanHakobyan/HTTP-Protocol-Manipulation: HTTP, Protocol , Manipulation,

HTTP (Hypertext Transfer Protocol) is the backbone of the World Wide Web. It is a client-server protocol used for exchanging data and information between a web browser and a web server. HTTP allows a web browser to send a request to a server for a specific resource and receive a response in return. The protocol was first introduced in 1991 and has been continuously updated to meet the changing needs of the internet.

HTTP is stateless, meaning that the server does not retain any information about the client between requests. Each request is treated as a separate transaction, and the server must process the request and send a response before it can move on to the next request. This allows for scalability and eliminates the need for server-side storage of session data.

HTTP uses a request-response model. The client sends a request to the server, which then processes the request and sends back a response. The request message consists of several components, including a method (e.g., GET, POST, PUT, DELETE), a URI (Uniform Resource Identifier), headers (e.g., Accept-Encoding, User-Agent), and a message body (optional). The response message also has several components, including a status code (e.g., 200 OK, 404 Not Found), headers (e.g., Content-Type, Content-Length), and a message body (optional).

HTTP operates on the application layer of the internet protocol stack and uses TCP (Transmission Control Protocol) to ensure reliable data transmission. HTTP is a text-based protocol, with requests and responses transmitted as plain text. This makes it simple for developers to debug and inspect the requests and responses, and it also makes it easier to develop and implement the protocol.

There are several versions of HTTP in use today, with HTTP/2 and HTTP/3 being the latest versions. HTTP/2 was introduced in 2015 and is an improved version of HTTP/1.1. It offers several new features, including server push, multiplexing, and header compression, which make it faster and more efficient than its predecessor. HTTP/3, introduced in 2018, is the first major revision of the protocol since 1999 and is built on top of the UDP (User Datagram Protocol) instead of TCP. This allows for reduced latency and improved performance, making it ideal for use in high-bandwidth, low-latency applications.

In conclusion, HTTP is an essential component of the internet and is used by billions of people around the world to access information and resources online. The protocol is simple, efficient, and flexible, and it has been continuously updated to meet the changing needs of the internet. Whether you are a web developer or a casual user, understanding the basics of HTTP is important for a better appreciation of the web and its underlying technologies.

- Diego Herrera Redondo

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