412 Precondition Failed
One or more conditions given in the request header fields evaluated to false when tested on the server.
This response code allows the client to place preconditions on the current resource state (its current representations and metadata) and, thus, prevent the request method from being applied if the target resource is in an unexpected state.
- Source: RFC7232 Section 4.2
412 Code References
-
.NET HTTP Status Enum
HttpStatusCode.PreconditionFailed -
Rust HTTP Status Constant
http::StatusCode::PRECONDITION_FAILED -
Rails HTTP Status Symbol
:precondition_failed -
Go HTTP Status Constant
http.StatusPreconditionFailed -
Symfony HTTP Status Constant
Response::HTTP_PRECONDITION_FAILED -
Python2 HTTP Status Constant
httplib.PRECONDITION_FAILED -
Python3+ HTTP Status Constant
http.client.PRECONDITION_FAILED -
Python3.5+ HTTP Status Constant
http.HTTPStatus.PRECONDITION_FAILED
