pub enum IfMatch {
Any,
Items(Vec<EntityTag>),
}
Expand description
If-Match
header, defined
in RFC 7232 §3.1
The If-Match
header field makes the request method conditional on
the recipient origin server either having at least one current
representation of the target resource, when the field-value is “*”,
or having a current representation of the target resource that has an
entity-tag matching a member of the list of entity-tags provided in
the field-value.
An origin server MUST use the strong comparison function when
comparing entity-tags for If-Match
, since the client
intends this precondition to prevent the method from being applied if
there have been any changes to the representation data.
§ABNF
If-Match = "*" / 1#entity-tag
§Example Values
"xyzzy"
- “xyzzy”, “r2d2xxxx”, “c3piozzzz”
§Examples
use actix_web::HttpResponse;
use actix_web::http::header::IfMatch;
let mut builder = HttpResponse::Ok();
builder.insert_header(IfMatch::Any);
use actix_web::HttpResponse;
use actix_web::http::header::{IfMatch, EntityTag};
let mut builder = HttpResponse::Ok();
builder.insert_header(
IfMatch::Items(vec![
EntityTag::new(false, "xyzzy".to_owned()),
EntityTag::new(false, "foobar".to_owned()),
EntityTag::new(false, "bazquux".to_owned()),
])
);
Variants§
Trait Implementations§
source§impl Header for IfMatch
impl Header for IfMatch
source§fn name() -> HeaderName
fn name() -> HeaderName
Returns the name of the header field.
source§fn parse<M: HttpMessage>(msg: &M) -> Result<Self, ParseError>
fn parse<M: HttpMessage>(msg: &M) -> Result<Self, ParseError>
Parse the header from a HTTP message.
source§impl PartialEq for IfMatch
impl PartialEq for IfMatch
source§impl TryIntoHeaderValue for IfMatch
impl TryIntoHeaderValue for IfMatch
§type Error = InvalidHeaderValue
type Error = InvalidHeaderValue
The type returned in the event of a conversion error.
source§fn try_into_value(self) -> Result<HeaderValue, Self::Error>
fn try_into_value(self) -> Result<HeaderValue, Self::Error>
Try to convert value to a HeaderValue.
impl Eq for IfMatch
impl StructuralPartialEq for IfMatch
Auto Trait Implementations§
impl Freeze for IfMatch
impl RefUnwindSafe for IfMatch
impl Send for IfMatch
impl Sync for IfMatch
impl Unpin for IfMatch
impl UnwindSafe for IfMatch
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§default unsafe fn clone_to_uninit(&self, dst: *mut T)
default unsafe fn clone_to_uninit(&self, dst: *mut T)
🔬This is a nightly-only experimental API. (
clone_to_uninit
)source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to
key
and return true
if they are equal.