Web Pages: Reference Data: HTTP Server Codes:

1nn Informational - Request received, continuing process
100 Continue
101 Switching Protocols
 
2nn Successful Client Requests
200 OK
201 Created
202 Accepted
203 Non-Authoritative Information
204 No Content
205 Reset Content
206 Partial Content
207 Partial Update OK
 
3nn Client Request Redirected
300 Multiple Choices
301 Moved Permanently
302 Moved Temporarily
303 See Other
304 Not Modified
305 Use Proxy
306 Proxy Redirect
307 Temporary Redirect
 
4nn Client Request Errors
400 Bad Request – Usually a syntax problem in the specification of the URI
401 Unauthorized – A password or encryption key is missing or invalid. Possibly case sensitivity issue.
402 Payment Required
403 Forbidden
404 Not Found
405 Method Not Allowed
406 None Acceptable
407 Proxy Authentication Required
408 Request Time-Out – Client stopped the request before the server finished retrieving it.
409 Conflict
410 Gone
411 Length Required
412 Unless True
413 Request Entity Too Large
414 Request-URI Too Large
415 Unsupported Media Type
416 Range Not Satisfiable
417 Expectation Failed
418 Reauthentication Required
419 Proxy Reauthentication Reuired
 
5nn Server Errors
500 Internal Server Error – Unable to retrieve the HTML doc because of a server-configuration issue.
501 Not Implemented – The web server doesn't support a requested feature.
502 Bad Gateway
503 Service Unavailable
504 Gateway Time-Out
505 HTTP Version not supported
506 Partial update Not Implemented
Possibly a more meaningful explanation of some of the more common codes are these, provided by this site which check HTML page links for validity: http://validator.w3.org/checklink

200

There are broken fragments which must be fixed.

301

You should update the link.

302

Usually nothing.

401

The link is not public. You'd better specify it.

 

403

The link is forbidden! This needs fixing. Usual suspects: a missing index.html or Overview.html, or a missing ACL.

404

The link is broken. Fix it NOW!

405

The server does not allow HEAD requests. Go ask the guys who run this server why. Check the link manually.

500

Either the hostname is incorrect or it is a server side problem. Check the detailed list.

501

Could not check this link: method not implemented or scheme not supported.

Additional resources:
http://www.webopedia.com/quick_ref/error.asp
http://www.faqs.org/rfcs/rfc2068.html
http://www.w3.org/Protocols/HTTP/1.1/spec.html#Status-Code Has a good elaboration on each code
http://www.w3.org/Library/src/HTError.html
http://www.w3.org/Library/src/HTDialog.html


Last updated 04-10-06 20.37.40