Enum hyper::header::IfMatch [] [src]

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

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 value is a match

Only the listed items are a match

Trait Implementations

impl Clone for IfMatch
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Returns a copy of the value. Read more

1.0.0
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Performs copy-assignment from source. Read more

impl Debug for IfMatch
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Formats the value using the given formatter. Read more

impl PartialEq for IfMatch
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This method tests for self and other values to be equal, and is used by ==. Read more

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This method tests for !=.

impl Header for IfMatch
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Returns the name of the header field this belongs to. Read more

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Parse a header from a raw stream of bytes. Read more

impl HeaderFormat for IfMatch
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Format a header to be output into a TcpStream. Read more

impl Display for IfMatch
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Formats the value using the given formatter. Read more