What Is a 414 Status Code?

The server is refusing to service the request because the request-target1 is longer than the server is willing to interpret.

This rare condition is only likely to occur when a client has improperly converted a POST request to a GET request with long query information, when the client has descended into a “black hole” of redirection (e.g., a redirected URI prefix that points to a suffix of itself) or when the server is under attack by a client attempting to exploit potential security holes.

A 414 response is cacheable by default; i.e., unless otherwise indicated by the method definition or explicit cache controls2.


Rails HTTP Status Symbol :request_uri_too_long

Go HTTP Status Constant http.StatusRequestURITooLong

Symfony HTTP Status Constant Response::HTTP_REQUEST_URI_TOO_LONG

Python2 HTTP Status Constant httplib.REQUEST_URI_TOO_LONG

Python3+ HTTP Status Constant http.client.REQUEST_URI_TOO_LONG

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

Additional resources

Return to List of HTTP Status Codes