HTTP 401 Unauthorized vs 416 Range Not Satisfiable
Both HTTP 401 (Unauthorized) and 416 (Range Not Satisfiable) belong to the 4xx Client Error category. 401 indicates that the request requires user authentication. The response includes a WWW-Authenticate header indicating the authentication scheme. Meanwhile, 416 means that the server cannot serve the requested byte range. The Range header value is outside the resource's size.
Description
The request requires user authentication. The response includes a WWW-Authenticate header indicating the authentication scheme.
When You See It
When accessing a protected resource without credentials or with expired tokens.
How to Fix
Include valid authentication credentials (API key, Bearer token, Basic auth) in the Authorization header.
Description
The server cannot serve the requested byte range. The Range header value is outside the resource's size.
When You See It
When requesting a byte range beyond the file's actual size.
How to Fix
Check the Content-Range in the response for the actual file size and adjust your Range header.
Key Differences
HTTP 401: The request requires user authentication. The response includes a WWW-Authenticate header indicating the authentication scheme.
HTTP 416: The server cannot serve the requested byte range. The Range header value is outside the resource's size.
You encounter 401 when when accessing a protected resource without credentials or with expired tokens.
You encounter 416 when when requesting a byte range beyond the file's actual size.
When to Use Which
For 401 (Unauthorized): Include valid authentication credentials (API key, Bearer token, Basic auth) in the Authorization header. For 416 (Range Not Satisfiable): Check the Content-Range in the response for the actual file size and adjust your Range header.