Expand description
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.
If-Match = "*" / 1#entity-tag
"xyzzy"
- “xyzzy”, “r2d2xxxx”, “c3piozzzz”
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()),
])
);
Only the listed items are a match
Performs copy-assignment from
source
.
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Formats the value using the given formatter.
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Formats the value using the given formatter.
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Returns the name of the header field this belongs to.
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Parse a header from a raw stream of bytes.
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Format a header to be output into a TcpStream.
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This method tests for
self
and
other
values to be equal, and is used
by
==
.
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This method tests for
!=
. The default implementation is almost always
sufficient, and should not be overridden without very good reason.
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Immutably borrows from an owned value.
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Mutably borrows from an owned value.
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Returns the argument unchanged.
Calls U::from(self)
.
That is, this conversion is whatever the implementation of
From<T> for U
chooses to do.
The resulting type after obtaining ownership.
Creates owned data from borrowed data, usually by cloning.
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Uses borrowed data to replace owned data, usually by cloning.
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Converts the given value to a
String
.
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The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.
Get the TypeId
of this object.