The following report shows the status codes returned by the HTTP server. For each line in
the log file, a status code is returned telling how the request was handled.
OK (200): 30
The request was fulfilled.
NOT MODIFIED (304): 40
If the client has done a conditional GET and access is allowed, but
the document has not been modified since the date and time specified
in If-Modified-Since field, the server responds with a 304 status code
and does not send the document body to the client.
