4×× CLIENT ERROR

400 BAD REQUEST

The server cannot or will not process the request due to something that is perceived to be a client error (e.g., malformed request syntax, invalid request message framing, or deceptive request routing).

400 BAD REQUEST Source: RFC7231 Section 6.5.1

 

400 CODE REFERENCES

Rails HTTP Status Symbol bad_request

Go HTTP Status Constant http.StatusBadRequest

Symfony HTTP Status Constant Response::HTTP_BAD_REQUEST

Python2 HTTP Status Constant httplib.BAD_REQUEST

Python3+ HTTP Status Constant http.client.BAD_REQUEST

Python3.5+ HTTP Status Constant http.HTTPStatus.BAD_REQUEST

 

Recommended:

• 307 TEMPORARY REDIRECT
• 308 PERMANENT REDIRECT