HTTP 206 Partial Content vs 431 Request Header Fields Too Large
HTTP 206 (Partial Content) is a 2xx Success response, while 431 (Request Header Fields Too Large) is a 4xx Client Error response. 206 indicates that the server is delivering only part of the resource due to a Range header sent by the client. Used for resumable downloads and video streaming. In contrast, 431 means that the server refuses to process the request because an individual header field or all headers collectively are too large.
説明
The server is delivering only part of the resource due to a Range header sent by the client. Used for resumable downloads and video streaming.
このコードが表示される場合
During video streaming, large file downloads, or when resuming interrupted downloads.
解決方法
No fix needed. This is normal behavior for range requests.
説明
The server refuses to process the request because an individual header field or all headers collectively are too large.
このコードが表示される場合
When cookies accumulate to an excessive size, or a single header (like Authorization) is too long.
解決方法
Reduce header sizes. Clear excessive cookies. Use shorter tokens.
主な違い
206 is a 2xx Success response, while 431 is a 4xx Client Error response.
HTTP 206: The server is delivering only part of the resource due to a Range header sent by the client. Used for resumable downloads and video streaming.
HTTP 431: The server refuses to process the request because an individual header field or all headers collectively are too large.
You encounter 206 when during video streaming, large file downloads, or when resuming interrupted downloads.
You encounter 431 when when cookies accumulate to an excessive size, or a single header (like Authorization) is too long.
どちらをいつ使うか
For 206 (Partial Content): No fix needed. This is normal behavior for range requests. For 431 (Request Header Fields Too Large): Reduce header sizes. Clear excessive cookies. Use shorter tokens.