Struct hyper::header::ETag [] [src]

pub struct ETag(pub EntityTag);

ETag header, defined in RFC7232

The ETag header field in a response provides the current entity-tag for the selected representation, as determined at the conclusion of handling the request. An entity-tag is an opaque validator for differentiating between multiple representations of the same resource, regardless of whether those multiple representations are due to resource state changes over time, content negotiation resulting in multiple representations being valid at the same time, or both. An entity-tag consists of an opaque quoted string, possibly prefixed by a weakness indicator.

ABNF

ETag       = entity-tag

Example values

Examples

use hyper::header::{Headers, ETag, EntityTag};

let mut headers = Headers::new();
headers.set(ETag(EntityTag::new(false, "xyzzy".to_owned())));
use hyper::header::{Headers, ETag, EntityTag};

let mut headers = Headers::new();
headers.set(ETag(EntityTag::new(true, "xyzzy".to_owned())));

Methods from Deref<Target = EntityTag>

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Get the tag.

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Set the tag.

Panics

If the tag contains invalid characters.

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For strong comparison two entity-tags are equivalent if both are not weak and their opaque-tags match character-by-character.

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For weak comparison two entity-tags are equivalent if their opaque-tags match character-by-character, regardless of either or both being tagged as "weak".

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The inverse of EntityTag.strong_eq().

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The inverse of EntityTag.weak_eq().

Trait Implementations

impl Clone for ETag
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Returns a copy of the value. Read more

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Performs copy-assignment from source. Read more

impl Debug for ETag
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Formats the value using the given formatter. Read more

impl PartialEq for ETag
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This method tests for self and other values to be equal, and is used by ==. Read more

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This method tests for !=.

impl Deref for ETag
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The resulting type after dereferencing.

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Dereferences the value.

impl DerefMut for ETag
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Mutably dereferences the value.

impl Header for ETag
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Returns the name of the header field this belongs to. Read more

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Parse a header from a raw stream of bytes. Read more

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Format a header to outgoing stream. Read more

impl Display for ETag
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Formats the value using the given formatter. Read more