HTTP 205 Reset Content vs 412 Precondition Failed
HTTP 205 (Reset Content) is a 2xx Success response, while 412 (Precondition Failed) is a 4xx Client Error response. 205 indicates that the server fulfilled the request and the client should reset the document view (e.g., clear a form). In contrast, 412 means that one or more conditions in the request headers (If-Match, If-Unmodified-Since) evaluated to false.
Description
The server fulfilled the request and the client should reset the document view (e.g., clear a form).
Quand vous le voyez
After form submissions where the server wants the client to reset the form for new input.
Comment résoudre
The client should clear the form or reset the view. Rarely used in practice.
Description
One or more conditions in the request headers (If-Match, If-Unmodified-Since) evaluated to false.
Quand vous le voyez
When using conditional requests with ETags and the resource has changed.
Comment résoudre
Refresh the ETag/Last-Modified value and retry with updated preconditions.
Différences clés
205 is a 2xx Success response, while 412 is a 4xx Client Error response.
HTTP 205: The server fulfilled the request and the client should reset the document view (e.g., clear a form).
HTTP 412: One or more conditions in the request headers (If-Match, If-Unmodified-Since) evaluated to false.
You encounter 205 when after form submissions where the server wants the client to reset the form for new input.
You encounter 412 when when using conditional requests with ETags and the resource has changed.
Quand utiliser lequel
For 205 (Reset Content): The client should clear the form or reset the view. Rarely used in practice. For 412 (Precondition Failed): Refresh the ETag/Last-Modified value and retry with updated preconditions.