Struct salvo::http::headers::IfMatch [−][src]
If-Match
header, defined in
RFC7232
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 headers::IfMatch; let if_match = IfMatch::any();
Implementations
impl IfMatch
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pub fn any() -> IfMatch
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Create a new If-Match: *
header.
pub fn is_any(&self) -> bool
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Returns whether this is If-Match: *
, matching any entity tag.
pub fn precondition_passes(&self, etag: &ETag) -> bool
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Checks whether the ETag
strongly matches.
Trait Implementations
impl Clone for IfMatch
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impl Debug for IfMatch
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impl From<ETag> for IfMatch
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impl Header for IfMatch
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pub fn name() -> &'static HeaderName
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pub fn decode<'i, I>(values: &mut I) -> Result<IfMatch, Error> where
I: Iterator<Item = &'i HeaderValue>,
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I: Iterator<Item = &'i HeaderValue>,
pub fn encode<E>(&self, values: &mut E) where
E: Extend<HeaderValue>,
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E: Extend<HeaderValue>,
impl PartialEq<IfMatch> for IfMatch
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impl StructuralPartialEq for IfMatch
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Auto Trait Implementations
impl RefUnwindSafe for IfMatch
impl Send for IfMatch
impl Sync for IfMatch
impl Unpin for IfMatch
impl UnwindSafe for IfMatch
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T> Instrument for T
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pub fn instrument(self, span: Span) -> Instrumented<Self>
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pub fn in_current_span(self) -> Instrumented<Self>
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> Same<T> for T
type Output = T
Should always be Self
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
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pub fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<V, T> VZip<V> for T where
V: MultiLane<T>,
V: MultiLane<T>,