HTTP Foundations and Evolution Learning Path

HTTP as request-response client-server protocol

HTTP (Hypertext Transfer Protocol) is an application-layer, request–response protocol used in the client–server model. A client sends an HTTP request to a server, and the server processes it and returns an HTTP response that includes status information and, when applicable, the requested resource (e.g., an HTML document or other content). In typical web use, a browser acts as the client (user agent) and a web server hosts the resources. HTTP is designed to work efficiently with intermediate network elements such as proxies and caches. It is stateless at the protocol level, meaning the server does not inherently retain per-user session state across requests; application sessions are commonly implemented using cookies or other mechanisms. HTTP also supports authentication via challenge–response schemes (e.g., Basic and Digest) and can be encrypted using HTTPS (HTTP over TLS).

0/2 modes complete

Web resources, URIs, and URL schemes

0/2 modes complete