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

pub enum IfMatch {

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

Example values

  • "xyzzy"
  • "xyzzy", "r2d2xxxx", "c3piozzzz"


use hyper::header::{Headers, IfMatch};

let mut headers = Headers::new();
use hyper::header::{Headers, IfMatch, EntityTag};

let mut headers = Headers::new();
        EntityTag::new(false, "xyzzy".to_owned()),
        EntityTag::new(false, "foobar".to_owned()),
        EntityTag::new(false, "bazquux".to_owned()),


Any value is a match

Only the listed items are a match

Trait Implementations

impl Clone for IfMatch


Returns a copy of the value. Read more


Performs copy-assignment from source. Read more

impl Debug for IfMatch


Formats the value using the given formatter.

impl PartialEq for IfMatch


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


This method tests for !=.

impl Header for IfMatch


Returns the name of the header field this belongs to. Read more


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


Format a header to outgoing stream. Read more

impl Display for IfMatch


Formats the value using the given formatter. Read more