HTTP 508 Loop Detected is a WebDAV extension (RFC 5842) indicating the server detected an infinite loop while processing a request with 'Depth: infinity'. This occurs when WebDAV bindings create circular references in a collection tree — processing the collection would never terminate. The server breaks the loop and returns 508 instead of entering an infinite traversal.
Response includes the status code, standard headers (including Content-Type), and a small diagnostic JSON body describing the request and returned status.
Simulator URL (copy in the app after load — not a normal link):
https://httpstatus.com/api/status/508
Example request:
curl -i "https://httpstatus.com/api/status/508"