What is HTTP ?
HTTP, or Hypertext Transfer Protocol, is an application layer protocol used primarily with the World Wide Web in the client-server model. It was designed in the early 1990s and has since evolved into the foundation for data exchange on the web. HTTP is used to fetch resources such as HTML documents, images, videos, scripts, and more. Clients and servers communicate by exchanging individual messages, typically initiated by the recipient, usually a web browser. HTTP is sent over TCP, or over a TLS-encrypted TCP connection, although any reliable transport protocol could theoretically be used.
What is top use cases of HTTP ?
The top use cases of HTTP include:
- Web browsing: HTTP enables users to access websites, retrieve web pages, and navigate through hyperlinks.
- API communication: Many web services and applications utilize HTTP to exchange data and perform actions through APIs (Application Programming Interfaces).
- File transfer: HTTP can be used for uploading and downloading files from servers, such as when accessing file-sharing platforms or cloud storage services.
- Real-time communication: HTTP can facilitate real-time communication protocols like WebSocket, allowing interactive and dynamic applications such as chat services and collaborative editing.
- Streaming media: HTTP can be employed for streaming audio or video content, as seen in platforms like YouTube or Netflix.
What are feature of HTTP ?
Features of HTTP:
- Stateless: Each request from a client to a server is treated as an independent transaction, with no knowledge of previous requests.
- Connectionless: No persistent connection is maintained between the client and server after a request is made.
- Text-Based: HTTP messages are text-based, making it human-readable and easy to debug using tools like Wireshark or browser developer tools.
- Request-Response Model: Communication involves a client sending a request to a server, and the server responding with the requested information or an error message.
What is the workflow of HTTP ?
Workflow of HTTP:
- Client Sends Request: A client (typically a web browser) sends an HTTP request to a server. The request includes a method (GET, POST, etc.), headers, and optionally a message body.
- Server Processes Request: The server receives the request, processes it based on the provided information, and prepares an HTTP response.
- Server Sends Response: The server sends the HTTP response back to the client. The response includes headers and, if applicable, a message body.
- Client Processes Response: The client receives the response, processes the information, and may render it to the user.