HTTP 102 Processing vs 428 Precondition Required
HTTP 102 (Processing) is a 1xx Informational response, while 428 (Precondition Required) is a 4xx Client Error response. 102 indicates that the server has received and is processing the request, but no response is available yet. Prevents the client from timing out. In contrast, 428 means that the server requires the request to be conditional (e.g., include If-Match header) to prevent lost updates.
説明
The server has received and is processing the request, but no response is available yet. Prevents the client from timing out.
このコードが表示される場合
During long-running WebDAV operations.
解決方法
Wait for the final response. This is an interim status to prevent timeouts.
説明
The server requires the request to be conditional (e.g., include If-Match header) to prevent lost updates.
このコードが表示される場合
When an API requires optimistic concurrency control via ETags.
解決方法
Fetch the resource first to get its ETag, then include If-Match in your update request.
主な違い
102 is a 1xx Informational response, while 428 is a 4xx Client Error response.
HTTP 102: The server has received and is processing the request, but no response is available yet. Prevents the client from timing out.
HTTP 428: The server requires the request to be conditional (e.g., include If-Match header) to prevent lost updates.
You encounter 102 when during long-running WebDAV operations.
You encounter 428 when when an API requires optimistic concurrency control via ETags.
どちらをいつ使うか
For 102 (Processing): Wait for the final response. This is an interim status to prevent timeouts. For 428 (Precondition Required): Fetch the resource first to get its ETag, then include If-Match in your update request.