The toy response starts with a status line.
The response starts with a status line
The first response row gives the version and status before any headers or body bytes.
status line first
The status is OK
The status code is 200, and the reason text is OK.
status=200
The request asked for the text file
The request rows show path /hello.txt and Accept text/plain.
/hello.txt requested
Summary
The response line tells us the request succeeded before the body is counted.
response begins with status