HTTP Protocol

HTTP stands for Hypertext Transfer Protocol. It is a protocol used for transmitting hypermedia documents, such as HTML files, over the internet. HTTP defines how messages are formatted and transmitted between web servers and web browsers, allowing users to access and interact with web pages, images, videos, and other content on the World Wide Web.

In the below PDF we discuss about HTTP Protocol in detail in simple language, Hope this will help in better understanding.

Common HTTP Methods:

  1. GET: Requests a representation of a resource without modifying it. Used for retrieving web pages, images, and other content.
  2. POST: Submits data to be processed by a specified resource, often used for form submissions and uploading files.
  3. PUT: Uploads a representation of a resource to a specified location, used for updating existing resources.
  4. DELETE: Deletes the specified resource, used for removing web pages, files, or other resources.
  5. HEAD: Requests headers only from the server, without the actual content, useful for checking resource availability and metadata.

Features of HTTP Protocol:

  • Client-Server Architecture: HTTP follows a client-server model, where clients (such as web browsers) send requests to servers for resources, and servers respond with the requested content.
  • Stateless Protocol: HTTP is stateless, meaning that each request from a client to a server is independent and does not retain any information about previous interactions. Session management techniques like cookies are used to maintain state between requests.
  • Text-Based Protocol: HTTP messages consist of ASCII text, organized into headers and optional message bodies. Requests contain information such as the request method (e.g., GET, POST), URL (Uniform Resource Locator), and headers, while responses include status codes, headers, and the response body.
  • Request-Response Cycle: The typical HTTP interaction involves a client sending a request to a server, which processes the request and returns a response containing the requested resource or an error message. This request-response cycle forms the basis of web communication.
  • Connectionless and Stateless: HTTP connections are typically short-lived and stateless, meaning that after each request-response exchange, the connection is closed. Subsequent requests require establishing new connections, which can lead to additional latency.


HTTP is a fundamental protocol of the World Wide Web, enabling the exchange of hypermedia documents between clients and servers. Its simplicity, flexibility, and widespread adoption have made it the backbone of modern web communication. As web technologies evolve, HTTP continues to adapt, with newer versions and extensions addressing security, performance, and efficiency requirements of contemporary web applications.

Must Read:IP Addressand OSI Model.

Related Question

HTTP stands for Hypertext Transfer Protocol. It is an application protocol used for transferring data on the World Wide Web. It serves as a foundation for communication between web browsers and servers.

HTTP is designed to facilitate the exchange of various types of data, including text, images, video, and other multimedia content, between clients (such as web browsers) and servers (where web content is stored).

HTTP operates through a client-server model. When a client (typically a web browser) requests a resource from a server, it sends an HTTP request message to the server. The server then processes the request and sends back an HTTP response message containing the requested resource, such as a webpage or a file.

URL stands for Uniform Resource Locator. It is a reference or address used to locate resources on the internet. URLs typically consist of a protocol (such as HTTP or HTTPS), domain name, and optional path to a specific resource on the server.

HTTP headers are additional pieces of information sent between the client and server along with the request or response messages. They provide metadata about the request or response, such as the content type, caching instructions, and authentication credentials.


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