Enum hyper::header::IfMatch
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pub enum IfMatch { Any, Items(Vec<EntityTag>), }
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 hyper::header::{Headers, IfMatch}; let mut headers = Headers::new(); headers.set(IfMatch::Any);
use hyper::header::{Headers, IfMatch, EntityTag}; let mut headers = Headers::new(); headers.set( IfMatch::Items(vec![ EntityTag::new(false, "xyzzy".to_owned()), EntityTag::new(false, "foobar".to_owned()), EntityTag::new(false, "bazquux".to_owned()), ]) );
Variants
Any
Any value is a match
Items(Vec<EntityTag>)
Only the listed items are a match
Trait Implementations
impl Clone for IfMatch
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fn clone(&self) -> IfMatch
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Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
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Performs copy-assignment from source
. Read more
impl Debug for IfMatch
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impl PartialEq for IfMatch
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fn eq(&self, __arg_0: &IfMatch) -> bool
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This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, __arg_0: &IfMatch) -> bool
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This method tests for !=
.
impl Header for IfMatch
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fn header_name() -> &'static str
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Returns the name of the header field this belongs to. Read more
fn parse_header(raw: &Raw) -> Result<Self>
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Parse a header from a raw stream of bytes. Read more
fn fmt_header(&self, f: &mut Formatter) -> Result
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Format a header to outgoing stream. Read more