Sun Microsystems Netscape Enterprise Server, Administrator'S Manual

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Responses
452 Netscape Enterprise Server Administrator’s Guide
Status Code
When a client makes a request, one item the server sends back is a status code,
which is a three-digit numeric code. There are four categories of status codes:
• Status codes in the 100–199 range indicate a provisional response.
• Status codes in the 200–299 range indicate a successful transaction.
• Status codes in the 300–399 range are returned when the URL can’t be
retrieved because the requested document has moved.
• Status codes in the 400–499 range indicate the client has an error.
• Status codes of 500 and higher indicate that the server can’t perform the
request, or an error has occurred.
Table A.2 contains some common status codes.
Table A.2 Common HTTP status codes
Status code Meaning
200
OK; successful transmission. This is not an error.
302
Found. Redirection to a new URL. The original URL has
moved. This is not an error; most browsers will get the
new page.
304
Use a local copy. If a browser already has a page in its
cache, and the page is requested again, some browsers
(such as Netscape Navigator) relay to the web server the
“last-modified” timestamp on the browser’s cached copy.
If the copy on the server is not newer than the browser’s
copy, the server returns a 304 code instead of returning
the page, reducing unnecessary network traffic. This is
not an error.
401
Unauthorized. The user requested a document but didn’t
provide a valid username or password.
403
Forbidden. Access to this URL is forbidden.