The first line of the toy HTTP request names the method, path, and version.
The first line names the request
The request line has method, path, and version fields. The table parses those fields from the pinned bytes.
method, path, version
Method says the action
The method is GET, which names the requested action in this toy request.
method=GET
Path says the resource
The path is /books. That path is separate from the site name.
path=/books
Summary
The request line says what action and path the client wants before any header is considered.
request line parsed