HTTP 425 Too Early vs 508 Loop Detected
HTTP 425 (Too Early) is a 4xx Client Error response, while 508 (Loop Detected) is a 5xx Server Error response. 425 indicates that the server is unwilling to risk processing a request that might be replayed. Used with TLS 1.3 early data (0-RTT). In contrast, 508 means that the server detected an infinite loop while processing the request (WebDAV).
Description
The server is unwilling to risk processing a request that might be replayed. Used with TLS 1.3 early data (0-RTT).
When You See It
When a server rejects a request sent as TLS 1.3 early data due to replay risk.
How to Fix
Retry the request after the TLS handshake completes.
Description
The server detected an infinite loop while processing the request (WebDAV).
When You See It
When WebDAV encounters circular references in bindings.
How to Fix
Fix the circular reference in the WebDAV configuration.
Key Differences
425 is a 4xx Client Error response, while 508 is a 5xx Server Error response.
HTTP 425: The server is unwilling to risk processing a request that might be replayed. Used with TLS 1.3 early data (0-RTT).
HTTP 508: The server detected an infinite loop while processing the request (WebDAV).
You encounter 425 when when a server rejects a request sent as TLS 1.3 early data due to replay risk.
You encounter 508 when when WebDAV encounters circular references in bindings.
When to Use Which
For 425 (Too Early): Retry the request after the TLS handshake completes. For 508 (Loop Detected): Fix the circular reference in the WebDAV configuration.