Struct reqwest::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

"xyzzy"
W/"xyzzy"
""

Examples

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

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

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

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

Methods from Deref<Target=EntityTag>

`fn tag(&self) -> &str`

Get the tag.

`fn set_tag(&mut self, tag: String)`

Set the tag.

Panics

If the tag contains invalid characters.

`fn strong_eq(&self, other: &EntityTag) -> bool`

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

`fn weak_eq(&self, other: &EntityTag) -> bool`

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".

`fn strong_ne(&self, other: &EntityTag) -> bool`

The inverse of EntityTag.strong_eq().

`fn weak_ne(&self, other: &EntityTag) -> bool`

The inverse of EntityTag.weak_eq().

Trait Implementations

`impl Display for ETag`

`fn fmt(&self, f: &mut Formatter) -> Result<(), Error>`

`impl Debug for ETag`

`fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>`

Formats the value using the given formatter.

`impl PartialEq<ETag> for ETag`

`fn eq(&self, __arg_0: &ETag) -> bool`

`fn ne(&self, __arg_0: &ETag) -> bool`

`impl Header for ETag`

`fn header_name() -> &'static str`

Returns the name of the header field this belongs to. Read more

`fn parse_header(raw: &[Vec<u8>]) -> Result<ETag, Error>`

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

`impl Clone for ETag`

`fn clone(&self) -> ETag`

`impl DerefMut for ETag`

`fn deref_mut(&mut self) -> &mut EntityTag`

`impl HeaderFormat for ETag`

`fn fmt_header(&self, f: &mut Formatter) -> Result<(), Error>`

Format a header to be output into a TcpStream. Read more