HTTP Status Messages

1xx: Information

Message Description
100 Continue Only a part of the request has been received by the server, but as long as it has not been rejected, the client should continue with the request
101 Switching Protocols The server switches protocol

2xx: Successful

Message Description
200 OK The request is OK
201 Created The request is complete, and a new resource is created.
202 Accepted The request is accepted for processing, but the processing is not complete.
203 Non-authoritative Information Request probably completed successfully but can’t tell from original server.
204 No Content The requested completed successfully but the resource requested is empty (has zero length).
205 Reset Content The requested completed successfully but the client should clear down any cached information as it may now be invalid.
206 Partial Content The request was canceled before it could be fulfilled. Typically the user gave up waiting for data and went to another page. Some download accelerator programs produce this error as they submit multiple requests to download a file at the same time.

3xx: Redirection

Message Description
300 Multiple Choices A link list. The user can select a link and go to that location. Maximum five addresses.
301 Moved Permanently The requested page has moved to a new url.
302 Found The requested page has moved temporarily to a new url.
303 See Other The requested page can be found under a different url.
304 Not Modified The server has identified from the request information that the client’s copy of the information is up-to-date and the requested information does not need to be sent again.
305 Use Proxy The request must be sent through the indicated proxy server.
306 Unused This code was used in a previous version. It is no longer used, but the code is reserved.
307 Temporary Redirect The requested page has moved temporarily to a new url.

4xx: Client Error

Message Description
400�Bad Request The server did not understand the request.
401 Unauthorized The requested page needs a username and a password.
402 Payment Required You can not use this code yet.
403 Forbidden Access is forbidden to the requested page.
404 Not Found The server can not find the requested page.
405 Method Not Allowed The method specified in the request is not allowed.
406 Not Acceptable The server can only generate a response that is not accepted by the client.
407 Proxy Authentication Required You must authenticate with a proxy server before this request can be served.
408 Request Timeout The request took longer than the server was prepared to wait.
409 Conflict The request could not be completed because of a conflict.
410 Gone The requested page is no longer available.
411 Length Required The “Content-Length” is not defined. The server will not accept the request without it.
412 Precondition Failed The precondition given in the request evaluated to false by the server.
413 Request Entity Too Large The server will not accept the request, because the request entity is too large.
414 Request-url Too Long The server will not accept the request, because the url is too long. Occurs when you convert a “post” request to a “get” request with a long query information.
415 Unsupported Media Type The server will not accept the request, because the media type is not supported.
416 Requested Range Not Satisfiable The portion of the resource requested is not available or out of range.
417 Expectation Failed The Expect specifier in the HTTP request header can not be met.

5xx: Server Error

Message Description
500�Internal Server Error The request was not completed. The server met an unexpected condition.
501 Not Implemented The request was not completed. The server did not support the functionality required.
502 Bad Gateway The request was not completed. The server received an invalid response from the upstream server.
503 Service Unavailable The request was not completed. The server is temporarily overloading or down.
504 Gateway Timeout The gateway has timed out.
505 HTTP Version Not Supported The server does not support the “http protocol” version.

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