Enum rocket::http::hyper::header::IfRange

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pub enum IfRange {
    EntityTag(EntityTag),
    Date(HttpDate),
}
Expand description

If-Range header, defined in RFC7233

If a client has a partial copy of a representation and wishes to have an up-to-date copy of the entire representation, it could use the Range header field with a conditional GET (using either or both of If-Unmodified-Since and If-Match.) However, if the precondition fails because the representation has been modified, the client would then have to make a second request to obtain the entire current representation.

The If-Range header field allows a client to "short-circuit" the second request. Informally, its meaning is as follows: if the representation is unchanged, send me the part(s) that I am requesting in Range; otherwise, send me the entire representation.

§ABNF

If-Range = entity-tag / HTTP-date

§Example values

  • Sat, 29 Oct 1994 19:43:31 GMT
  • \"xyzzy\"

§Examples

use hyper::header::{Headers, IfRange, EntityTag};

let mut headers = Headers::new();
headers.set(IfRange::EntityTag(EntityTag::new(false, "xyzzy".to_owned())));
// extern crate time;

use hyper::header::{Headers, IfRange, HttpDate};
use time::{self, Duration};

let mut headers = Headers::new();
headers.set(IfRange::Date(HttpDate(time::now() - Duration::days(1))));

Variants§

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EntityTag(EntityTag)

The entity-tag the client has of the resource

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Date(HttpDate)

The date when the client retrieved the resource

Trait Implementations§

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impl Clone for IfRange

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fn clone(&self) -> IfRange

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for IfRange

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

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

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl From<IfRange> for Header<'static>

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fn from(header: IfRange) -> Header<'static>

Converts to this type from the input type.
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impl Header for IfRange

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fn header_name() -> &'static str

Returns the name of the header field this belongs to. Read more
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fn parse_header(raw: &[Vec<u8>]) -> Result<IfRange, Error>

Parse a header from a raw stream of bytes. Read more
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impl HeaderFormat for IfRange

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fn fmt_header(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Format a header to be output into a TcpStream. Read more
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impl PartialEq for IfRange

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fn eq(&self, other: &IfRange) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl StructuralPartialEq for IfRange

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T, I> AsResult<T, I> for T
where I: Input,

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fn as_result(self) -> Result<T, ParseErr<I>>

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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Converts self into a collection.
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type Output = T

Should always be Self
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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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type Error = Infallible

The type returned in the event of a conversion error.
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Performs the conversion.
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Performs the conversion.
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fn get_type(&self) -> TypeId

Get the TypeId of this object.
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fn vzip(self) -> V

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impl<T> HeaderClone for T
where T: Sealed,