Understanding  HTTP

HTTP or Hypertext Transfer Protocol is the foundation of the World Wide Web. It is a set of rules that govern communication between web servers and clients. Whether you are browsing the internet, sending emails or downloading files, HTTP is responsible for delivering data from one point to another. In this post, we will discuss the most common questions about HTTP and how it works.

What is HTTP?

HTTP is a protocol that allows web servers and clients to communicate with each other. It is an application layer protocol that uses the TCP/IP stack to transfer data between two devices on the internet. HTTP was created by Tim Berners-Lee in 1989 as part of his vision for a global information system.

How does HTTP work?

When a user makes an HTTP request to a web server, the server processes the request and sends back an HTTP response. The client then receives the response and displays it on its screen. Each HTTP request and response consists of a header and a body. The header contains metadata about the message, while the body contains the actual data.

What are web protocols?

Web protocols are a set of rules that govern how data is transmitted over the internet. These protocols define how data should be formatted, transmitted and received by different applications on different devices. Some common web protocols include FTP, SMTP, HTTPS, and of course, HTTP.

What are web servers?

Web servers are software programs that run on computers or other devices connected to the internet. They are responsible for receiving requests from clients, processing them and sending back responses. Web servers can handle multiple requests at once and can handle different types of content such as text, images, audio and video.

What is an HTTP request?

An HTTP request is a message sent from a client to a server requesting some action to be taken. This can be anything from loading a webpage to submitting a form or downloading a file. An HTTP request consists of a method, a URI, a version and various headers.

What is an HTTP response?

An HTTP response is a message sent from a server to a client in response to an HTTP request. It contains status codes to indicate whether the request was successful or not and also includes various headers that provide additional information about the message.


HTTP is an essential protocol that makes the World Wide Web possible. It allows us to access websites, download files and communicate with other devices on the internet. Understanding how it works is critical for web developers and anyone who uses the internet regularly.


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  • "Learning HTTP/2: A Practical Guide for Beginners" by Stephen Ludin and Javier Garza
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