Struct scrappy_http::http::header::ETag

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 scrappy_http::Response;
use scrappy_http::http::header::{ETag, EntityTag};

let mut builder = Response::Ok();
builder.set(ETag(EntityTag::new(false, "xyzzy".to_owned())));

use scrappy_http::Response;
use scrappy_http::http::header::{ETag, EntityTag};

let mut builder = Response::Ok();
builder.set(ETag(EntityTag::new(true, "xyzzy".to_owned())));

Trait Implementations

impl Clone for ETag

fn clone(&self) -> ETag

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ETag

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

Formats the value using the given formatter.

impl Deref for ETag

type Target = EntityTag

The resulting type after dereferencing.

fn deref(&self) -> &EntityTag

Dereferences the value.

impl DerefMut for ETag

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

Mutably dereferences the value.

impl Display for ETag

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

Formats the value using the given formatter.

impl Header for ETag

fn name() -> HeaderName

Returns the name of the header field

fn parse<T>(msg: &T) -> Result<Self, ParseError> where
    T: HttpMessage, 

Parse a header

impl IntoHeaderValue for ETag

type Error = InvalidHeaderValue

The type returned in the event of a conversion error.

fn try_into(self) -> Result<HeaderValue, Self::Error>

Try to convert value to a Header value.

impl PartialEq<ETag> for ETag

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl StructuralPartialEq for ETag