Could you explain what components an HTTP response consists of and how it is formed?

The HTTP response consists of three main components:

1. Status Line — contains the HTTP protocol version, a numeric status code (e.g., 200, 404), and a textual description of the status (e.g., OK, Not Found).

2. Headers — a set of key-value pairs that convey meta-information about the response, such as content type (Content-Type), content length (Content-Length), cookies, and other data.

3. Body — the actual data sent by the server to the client. This can be an HTML page, JSON, image, etc.

The formation of the HTTP response occurs on the server after processing the request. The server determines the response status, forms the headers, adds the body, and then sends everything to the client over the network.