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HTTP_STATUS_RANGE_NOT_SATISFIABLE
This commonly occurs when a client resumes a download using an offset beyond the current file length or after the resource changed. The response can include Content-Range: bytes */length to reveal the current length.
Discard stale range metadata, revalidate the resource, and restart or adjust the range. Do not concatenate partial content from different versions of the same resource.
Operational meaning of HTTP 416 for HTTP_STATUS_RANGE_NOT_SATISFIABLE
HTTP 416 (this result) is a client-error response. AllStat records its meaning as “416 Range Not Satisfiable”. Interpret it with the request method, selected representation, response headers, and the specification or product that defines the code; the number alone does not prove that application work completed.
Client and server handling
- Treat this result as a condition visible at the request boundary; inspect authentication, syntax, preconditions, routing, and resource state before retrying.
- preserve the response body and challenge or retry-related headers because they often carry the actionable reason.
- automatic retry is safe only when the method and status contract allow it and the request has been corrected.
For telemetry, record HTTP 416, method, authority, route template rather than secrets, response headers relevant to caching or retry, latency, upstream identity, and whether the response originated at the application or an intermediary.
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