List of HTTP status codes

An HTTP status code is supplied from a server to each HTTP request response. On the requesting page there is a client such as a web browser. The server notifies through the HTTP status code to the client whether the request was successfully processed. Upon failure, the status code information about where ( for example, via a detour ) and how ( for example, authentication) he can get the desired information. Best known are the codes 404, 403 and 400

The first digit status code, the status class; they are in RFC 2616, and RFC 2518, RFC 2817, RFC 2295, RFC 2774 and RFC 4918 specified. Some belong to the Distributed Authoring (WebDAV ), others are not subject to specification, as they are set by the server manufacturers themselves, such as status code 449

List of HTTP status codes

1xx - Information

The processing of the request is still ongoing.

2xx - Successful Operation

The request was successful, the answer can be recycled.

3xx - Redirection

To ensure a successful processing of the request, further steps on the part of the client are required.

4xx - Client Error

Not entirely distinct from the server errors so-called. The cause of failure of the request, however, is rather the responsibility of the client.

5xx - Server Error

Not entirely distinct from the so-called client errors. The cause of failure of the request, however, is rather the responsibility of the server.

9xx - Proprietary Status codes

In addition to the standardized in RFC status codes, there are other, proprietary codes that occur under certain circumstances. The error is caused by the network, not by the requesting device. The client or the user should then ask his question again.