Enum hyper::header::IfNoneMatch
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[src]
pub enum IfNoneMatch { Any, EntityTags(Vec<EntityTag>), }
The If-None-Match
header defined by HTTP/1.1.
The "If-None-Match" header field makes the request method conditional on a recipient cache or origin server either not having any current representation of the target resource, when the field-value is "*", or having a selected representation with an entity-tag that does not match any of those listed in the field-value.
A recipient MUST use the weak comparison function when comparing entity-tags for If-None-Match (Section 2.3.2), since weak entity-tags can be used for cache validation even if there have been changes to the representation data.
Spec: https://tools.ietf.org/html/rfc7232#section-3.2
The If-None-Match
header field.
Variants
Any | This corresponds to '*'. |
EntityTags | The header field names which will influence the response representation. |