pub const VALID: Code;Expand description
2.03 Valid
generated from RFC7252 section 5.9.1.3
This Response Code is related to HTTP 304 “Not Modified” but only used to indicate that the response identified by the entity-tag identified by the included ETag Option is valid. Accordingly, the response MUST include an ETag Option and MUST NOT include a payload.
When a cache that recognizes and processes the ETag response option receives a 2.03 (Valid) response, it MUST update the stored response with the value of the Max-Age Option included in the response (explicitly, or implicitly as a default value; see also Section 5.6.2). For each type of Safe-to-Forward option present in the response, the (possibly empty) set of options of this type that are present in the stored response MUST be replaced with the set of options of this type in the response received. (Unsafe options may trigger similar option-specific processing as defined by the option.)