HTTP/HTTPS Protocols

Understanding HTTP

HTTP (Hypertext Transfer Protocol) is the foundation of data communication on the web. It follows a simple request-response model where clients (browsers) send requests to servers, which return responses.

HTTP Methods

• GET: Retrieve data from the server (should be idempotent)
• POST: Submit data to create a new resource
• PUT: Update an existing resource completely
• PATCH: Partially update an existing resource
• DELETE: Remove a resource from the server

Status Codes

• 2xx (Success): 200 OK, 201 Created, 204 No Content
• 3xx (Redirection): 301 Moved Permanently, 304 Not Modified
• 4xx (Client Error): 400 Bad Request, 401 Unauthorized, 404 Not Found
• 5xx (Server Error): 500 Internal Server Error, 503 Service Unavailable

HTTPS: The Secure Version

HTTPS adds encryption using TLS, ensuring data exchanged between browser and server cannot be intercepted or tampered with.