Hypertext Transfer Protocol (HTTP) Warn Codes
2014-02-17
2022-06-08
HTTP Warn Codes
IETF Review
The Warning header field (and the warn codes that it uses) has been
obsoleted for HTTP per .
110
Response is Stale
RFC7234, Section 5.5.1
111
Revalidation Failed
RFC7234, Section 5.5.2
112
Disconnected Operation
RFC7234, Section 5.5.3
113
Heuristic Expiration
RFC7234, Section 5.5.4
199
Miscellaneous Warning
RFC7234, Section 5.5.5
214
Transformation Applied
RFC7234, Section 5.5.6
299
Miscellaneous Persistent Warning
RFC7234, Section 5.5.7