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.
คำอธิบาย
The server fulfilled the request and the client should reset the document view (e.g., clear a form).
เมื่อคุณพบเห็น
After form submissions where the server wants the client to reset the form for new input.
วิธีแก้ไข
The client should clear the form or reset the view. Rarely used in practice.
คำอธิบาย
One or more conditions in the request headers (If-Match, If-Unmodified-Since) evaluated to false.
เมื่อคุณพบเห็น
When using conditional requests with ETags and the resource has changed.
วิธีแก้ไข
Refresh the ETag/Last-Modified value and retry with updated preconditions.
ความแตกต่างหลัก
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.
ควรใช้อันไหนเมื่อไร
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.