HTTP Status and Error Codes

HTTP Status and Error Codes

HTTP status and error codes are responses that are given by the website servers. The status codes are informational codes while HTTP error codes show an error.

The purpose of these codes is to communicate the cause of the issue so that it can be resolved. You must have seen most of these codes on the internet while browsing like HTTP 404, HTTP 500 and others.

Every HTTP status and error code has two parts:

  1. The code (such as HTTP 404)
  2. The reason phrase (such as Not found)

The phrases are simple phrases that explain the code and are helpful in making sense of the code. For instance, an HTTP 404 error code doesn’t make much sense but HTTP 404 Page Not Found makes sense that the page on the website is not found.

Below is a complete list of the standard HTTP codes along with their phrases and description.

100 Series

An informational status code series which indicates that the request has been received by the server and is being processed.

100 Continue: The client must continue with the request. The server has not rejected the request.

101 Switching Protocols: The server is switching protocols as per the request of the client.

200 Series

The codes which indicate that the request has been received, accepted and is processed.

200 OK: Successful HTTP request that has been processed by the server.

201 Created: A new resource or document has been created.

202 Accepted: The request is accepted for further processing.

203 Non-Authoritative Information: Transformation of proxy by the server.

204 No Content: The server is not sending any content.

205 Reset Content: The requester has to reset the view as the server is not sending content.

206 Partial Content: Partial resource is being delivered by the server.

300 Series

The series of codes where the browser has to take more action for the completion of the request.

302 Found: The browser has to perform a temporary redirect.

304 Not Modified: The requested resource or document is not modified since the last visit.

307 Temporary Redirect: In this case, the request has to be repeated using a different URI. This option is not available with 302.

400 Series

When the client or the requester is at fault, a 4xx code will appear.

400 Bad Request: The request will not be processed by the server due to a bad request.

401 Unauthorized: The request has not be approved due to authentication issue(s).

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