Can you explain the architecture of the first version of the HTTP protocol?

The first version of the HTTP protocol (HTTP/0.9) was very simple and had a minimal architecture:

• The client sent a simple request in the form of a string with the GET method and a path, for example: GET /index.html.
• The server responded only with the document body without headers, status code, or metadata.
• The protocol supported only one method — GET.
• There was no support for headers, response statuses, POST method, or others.

It was a one-way protocol where the client simply requested a resource, and the server returned its content. Later, HTTP evolved, adding headers, methods, status codes, and other features for more flexible interaction.