HTTP 416 Range Not Satisfiable vs 525 SSL Handshake Failed
HTTP 416 (Range Not Satisfiable) is a 4xx Client Error response, while 525 (SSL Handshake Failed) is a 5xx Server Error response. 416 indicates that the server cannot serve the requested byte range. The Range header value is outside the resource's size. In contrast, 525 means that cloudflare-specific. SSL/TLS handshake with the origin server failed.
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.
Description
Cloudflare-specific. SSL/TLS handshake with the origin server failed.
When You See It
When origin SSL certificate is expired, misconfigured, or incompatible.
How to Fix
Check origin SSL certificate validity. Ensure TLS version compatibility. Renew expired certificates.
Key Differences
416 is a 4xx Client Error response, while 525 is a 5xx Server Error response.
HTTP 416: The server cannot serve the requested byte range. The Range header value is outside the resource's size.
HTTP 525: Cloudflare-specific. SSL/TLS handshake with the origin server failed.
You encounter 416 when when requesting a byte range beyond the file's actual size.
You encounter 525 when when origin SSL certificate is expired, misconfigured, or incompatible.
When to Use Which
For 416 (Range Not Satisfiable): Check the Content-Range in the response for the actual file size and adjust your Range header. For 525 (SSL Handshake Failed): Check origin SSL certificate validity. Ensure TLS version compatibility. Renew expired certificates.