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Header

Struct Header 

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pub struct Header<'a> { /* private fields */ }
Expand description

A zero-copy view of a single HTTP header.

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impl<'a> Header<'a>

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pub fn name(&self) -> &'a str

Returns the header name (case-preserved from original).

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pub fn name_bytes(&self) -> &'a [u8]

Returns the header name as raw bytes.

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pub fn as_bytes_pair(&self) -> (&'a [u8], &'a [u8])

Returns the header as a raw (&[u8], &[u8]) pair.

This is useful for zero-allocation header processing.

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pub fn value(&self) -> &'a [u8]

Returns the header value as bytes.

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pub fn value_str(&self) -> Option<&'a str>

Returns the header value as a string, if valid UTF-8.

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pub fn name_eq_ignore_case(&self, other: &str) -> bool

Returns true if this header name matches (case-insensitive).

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pub fn is_content_length(&self) -> bool

Returns true if this is the Content-Length header.

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pub fn is_transfer_encoding(&self) -> bool

Returns true if this is the Transfer-Encoding header.

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pub fn as_content_length(&self) -> Option<usize>

Parses the value as Content-Length (usize).

Returns None if this isn’t Content-Length or value isn’t a valid integer.

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pub fn is_chunked_encoding(&self) -> bool

Returns true if Transfer-Encoding includes “chunked”.

Trait Implementations§

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impl<'a> Clone for Header<'a>

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fn clone(&self) -> Header<'a>

Returns a duplicate 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<'a> Debug for Header<'a>

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

Formats the value using the given formatter. Read more
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impl<'a> Copy for Header<'a>

Auto Trait Implementations§

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impl<'a> Freeze for Header<'a>

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impl<'a> RefUnwindSafe for Header<'a>

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impl<'a> Send for Header<'a>

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impl<'a> Sync for Header<'a>

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impl<'a> Unpin for Header<'a>

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impl<'a> UnwindSafe for Header<'a>

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
where T: ?Sized,

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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, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. 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> Instrument for T

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fn instrument(self, _span: NoopSpan) -> Self

Instruments this future with a span (no-op when disabled).
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fn in_current_span(self) -> Self

Instruments this future with the current span (no-op when disabled).
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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<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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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

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

Creates owned data from borrowed data, usually by cloning. Read more
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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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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<T> ResponseProduces<T> for T