Hypertext Transfer Protocol (HTTP) Warn Codes

Hypertext Transfer Protocol (HTTP) Warn Codes
Hypertext Transfer Protocol (HTTP) Warn Codes
Created
2014-02-17
2022-06-08
Available Formats
XML
HTML
Plain text
Registry Included Below
HTTP Warn Codes
HTTP Warn Codes
Registration Procedure(s)
IETF Review
Reference
RFC7234
Note
The Warning header field (and the warn codes that it uses) has been
obsoleted for HTTP per [
RFC9111
].
Available Formats
CSV
Warn Code
Short Description
Reference
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