Hypertext Transfer Protocol (HTTP) is the foundation of communication on the WWW. It defines the format of messages and the way they are transmitted between the client and the server.
HTTP has two sides to communication — the client and the server. On web applications, the client is the user's web browser and the server is the backend server. Communication happens when the client creates a message called an HTTP request, sends it to the server, and the server, in turn, responds with an HTTP response, as shown in the following diagram:
Each HTTP request consists of a few pieces of information:
- URI: The web address ...
