Features

History of HTTP

Tim Berners-Lee and his team at CERN are indeed credited with inventing the original HTTP protocol. HTTP version 0.9 was the initial version introduced in 1991. HTTP version 1.0 followed in 1996 with the introduction of RFC 1945. HTTP version 1.1 was introduced in January 1997 with RFC 2068, later refined in RFC 2616 in June 1999. HTTP version 2.0 was specified in RFC 7540 and published on May 14, 2015. HTTP version 3.0, also known as HTTP/3, is based on the QUIC protocol and is designed to improve web performance. It was renamed as Hyper-Text Transfer Protocol QUIC (HTTP/3) and developed by Google....

Methods of HTTP

GET: Used to retrieve data from a specified resource. It should have no side effects and is commonly used for fetching web pages, images, etc. POST: Used to submit data to be processed by a specified resource. It is suitable for form submissions, file uploads, and creating new resources. PUT: Used to update or create a resource on the server. It replaces the entire resource with the data provided in the request body. PATCH: Similar to PUT but used for partial modifications to a resource. It updates specific fields of a resource rather than replacing the entire resource. DELETE: Used to remove a specified resource from the server. HEAD: Similar to GET but retrieves only the response headers, useful for checking resource properties without transferring the full content. OPTIONS: Used to retrieve the communication options available for a resource, including supported methods and headers. TRACE: Used for debugging purposes to echo the received request back to the client, though it’s rarely used due to security concerns. CONNECT: Used to establish a tunnel to the server through an HTTP proxy, commonly used for SSL/TLS connections....

HTTP Request/Response:

HTTP is a request-response protocol, which means that for every request sent by a client (typically a web browser), the server responds with a corresponding response. The basic flow of an HTTP request-response cycle is as follows:...

HTTP Request Circle

Requested Resource Resource Type Server Response HTML Page HTML Server sends HTML file Style Sheet (CSS) CSS Server sends CSS file Image (JPG) Image (JPG) Server sends JPG image JavaScript Code JavaScript (JS) Server sends JS file Data (XML or JSON) Data Server sends XML/JSON data...

Overview of HTTP Request and Response Components

Concept Description HTTP Request Headers Text information in key-value pairs sent with every HTTP request, conveying details such as client’s browser, requested data, and more. HTTP Request Body Contains data being submitted to the web server, such as form inputs, authentication details, or other payload data. HTTP Response Sent by the server in answer to an HTTP request, consisting of an HTTP status code, response headers, and optional response body. HTTP Status Codes 3-digit codes indicating the outcome of an HTTP request, categorized into 1xx (Informational), 2xx (Success), 3xx (Redirection), 4xx (Client Error), and 5xx (Server Error) blocks. HTTP Response Headers Provide important information like data format, language, and content type in the response, helping clients interpret the data correctly. HTTP Response Body Contains the requested information sent by the server, such as HTML content for webpages, JSON data, or other data based on the client’s request....

Features

Stateless: Each request is independent, and the server doesn’t retain previous interactions’ information. Text-Based: Messages are in plain text, making them readable and debuggable. Client-Server Model: Follows a client-server architecture for requesting and serving resources. Request-Response: Operates on a request-response cycle between clients and servers. Request Methods: Supports various methods like GET, POST, PUT, DELETE for different actions on resources....

Advantages

Platform independence: Works on any operating system Compatibility: Compatible with various protocols and technologies Efficiency: Optimized for performance Security: Supports encryption for secure data transfer...

Disadvantages

Lack of security: Vulnerable to attacks like man in the middle Performance issues: Can be slow for large data transfers Statelessness: Requires additional mechanisms for maintaining state...