Struct rama::http::headers::Via

pub struct Via(/* private fields */);
Expand description

The Via general header is added by proxies, both forward and reverse.

This header can appear in the request or response headers. It is used for tracking message forwards, avoiding request loops, and identifying the protocol capabilities of senders along the request/response chain.

It is recommended to use the Forwarded header instead if you can.

More info can be found at https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Via.

§Syntax

Via: [ <protocol-name> "/" ] <protocol-version> <host> [ ":" <port> ]
Via: [ <protocol-name> "/" ] <protocol-version> <pseudonym>

§Example values

  • 1.1 vegur
  • HTTP/1.1 GWA
  • 1.0 fred, 1.1 p.example.net
  • HTTP/1.1 proxy.example.re, 1.1 edge_1
  • 1.1 2e9b3ee4d534903f433e1ed8ea30e57a.cloudfront.net (CloudFront)

Trait Implementations§

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impl Clone for Via

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fn clone(&self) -> Via

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 Via

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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 ForwardHeader for Via

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fn try_from_forwarded<'a, I>(input: I) -> Option<Via>
where I: IntoIterator<Item = &'a ForwardedElement>,

Try to convert the given iterator of ForwardedElement into the header. Read more
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impl FromIterator<ViaElement> for Via

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fn from_iter<T>(iter: T) -> Via
where T: IntoIterator<Item = ViaElement>,

Creates a value from an iterator. Read more
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impl Header for Via

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fn name() -> &'static HeaderName

The name of this header.
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fn decode<'i, I>(values: &mut I) -> Result<Via, Error>
where I: Iterator<Item = &'i HeaderValue>,

Decode this type from an iterator of HeaderValues.
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fn encode<E>(&self, values: &mut E)
where E: Extend<HeaderValue>,

Encode this type to a HeaderMap. Read more
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impl IntoIterator for Via

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type Item = ForwardedElement

The type of the elements being iterated over.
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type IntoIter = ViaIterator

Which kind of iterator are we turning this into?
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fn into_iter(self) -> <Via as IntoIterator>::IntoIter

Creates an iterator from a value. Read more
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impl PartialEq for Via

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

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Eq for Via

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impl StructuralPartialEq for Via

Auto Trait Implementations§

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impl Freeze for Via

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impl RefUnwindSafe for Via

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impl Send for Via

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impl Sync for Via

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impl Unpin for Via

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impl UnwindSafe for Via

Blanket Implementations§

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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> 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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impl<T> BorrowMut<T> for T
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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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default 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> Conv for T

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fn conv<T>(self) -> T
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Converts self into T using Into<T>. Read more
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impl<Q, K> Equivalent<K> for Q
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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<T> FmtForward for T

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fn fmt_binary(self) -> FmtBinary<Self>
where Self: Binary,

Causes self to use its Binary implementation when Debug-formatted.
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fn fmt_display(self) -> FmtDisplay<Self>
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Causes self to use its Display implementation when Debug-formatted.
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fn fmt_lower_exp(self) -> FmtLowerExp<Self>
where Self: LowerExp,

Causes self to use its LowerExp implementation when Debug-formatted.
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where Self: LowerHex,

Causes self to use its LowerHex implementation when Debug-formatted.
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where Self: Octal,

Causes self to use its Octal implementation when Debug-formatted.
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Causes self to use its UpperExp implementation when Debug-formatted.
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where Self: UpperHex,

Causes self to use its UpperHex implementation when Debug-formatted.
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where &'a Self: for<'a> IntoIterator,

Formats each item in a sequence. Read more
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fn from(t: T) -> T

Returns the argument unchanged.

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Attaches the current Context to this type, returning a WithContext wrapper. Read more
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impl<H> HeaderExt for H
where H: Header + Sealed,

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fn encode_to_value(&self) -> HeaderValue

Encode this Header to HeaderValue.
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Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
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where U: From<T>,

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Calls U::from(self).

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

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Pipes by value. This is generally the method you want to use. Read more
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Borrows self and passes that borrow into the pipe function. Read more
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Mutably borrows self and passes that borrow into the pipe function. Read more
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type Output = T

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fn tap(self, func: impl FnOnce(&Self)) -> Self

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