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HTTP Response Codes

By Dinesh

CODE
DESCRIPTION
200
OK. The request has successfully executed. Response depends upon the verb invoked.
201
Created. The request has successfully executed and a new resource has been created in the process. The response body is either empty or contains a representation containing URIs for the resource created. The Location header in the response should point to the URI as well.
202
Accepted. The request was valid and has been accepted but has not yet been processed. The response should include a URI to poll for status updates on the request. This allows asynchronous REST requests
204
No Content. The request was successfully processed but the server did not have any response. The client should not update its display.
301
Moved Permanently. The requested resource is no longer located at the specified URL. The new Location should be returned in the response header. Only GET or HEAD requests should redirect to the new location. The client should update its bookmark if possible.
302
Found. The requested resource has temporarily been found somewhere else. The temporary Location should be returned in the response header. Only GET or HEAD requests should redirect to the new location. The client need not update its bookmark as the resource may return to this URL.
303
See Other. This response code has been reinterpreted by the W3C Technical Architecture Group (TAG) as a way of responding to a valid request for a non-network addressable resource. This is an important concept in the Semantic Web when we give URIs to people, concepts, organizations, etc. There is a distinction between resources that can be found on the Web and those that cannot. Clients can tell this difference if they get a 303 instead of 200. The redirected location will be reflected in the Location header of the response. This header will contain a reference to a document about the resource or perhaps some metadata about it.
405
Method Not Allowed.
406
Not Acceptable.
410
Gone.
411
Length Required.
412
Precondition Failed.
413
Entity Too Large.
414
URI Too Long.
415
Unsupported Media Type.
417
Expectation Failed.
500
Internal Server Error.
501
Not Implemented.
503
Service Unavailable.

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