Struct hyper::header::Headers
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pub struct Headers { /* fields omitted */ }
A map of header fields on requests and responses.
Methods
impl Headers
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pub fn new() -> Headers
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Creates a new, empty headers map.
pub fn set<H: Header + HeaderFormat>(&mut self, value: H)
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Set a header field to the corresponding value.
The field is determined by the type of the value being set.
pub fn get_raw(&self, name: &str) -> Option<&[Vec<u8>]>
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Access the raw value of a header.
Prefer to use the typed getters instead.
Example:
let raw_content_type = headers.get_raw("content-type");
pub fn set_raw<K: Into<Cow<'static, str>>>(
&mut self,
name: K,
value: Vec<Vec<u8>>
)
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&mut self,
name: K,
value: Vec<Vec<u8>>
)
Set the raw value of a header, bypassing any typed headers.
Note: This will completely replace any current value for this header name.
Example:
headers.set_raw("content-length", vec![b"5".to_vec()]);
pub fn append_raw<K: Into<Cow<'static, str>>>(
&mut self,
name: K,
value: Vec<u8>
)
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&mut self,
name: K,
value: Vec<u8>
)
Append a value to raw value of this header.
If a header already contains a value, this will add another line to it.
If a header doesnot exist for this name, a new one will be created with the value.
Example:
headers.append_raw("x-foo", b"bar".to_vec()); headers.append_raw("x-foo", b"quux".to_vec());
pub fn remove_raw(&mut self, name: &str)
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Remove a header set by set_raw
pub fn get<H: Header + HeaderFormat>(&self) -> Option<&H>
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Get a reference to the header field's value, if it exists.
pub fn get_mut<H: Header + HeaderFormat>(&mut self) -> Option<&mut H>
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Get a mutable reference to the header field's value, if it exists.
pub fn has<H: Header + HeaderFormat>(&self) -> bool
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Returns a boolean of whether a certain header is in the map.
Example:
let has_type = headers.has::<ContentType>();
pub fn remove<H: Header + HeaderFormat>(&mut self) -> bool
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Removes a header from the map, if one existed. Returns true if a header has been removed.
ⓘImportant traits for HeadersItems<'a>pub fn iter(&self) -> HeadersItems
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Returns an iterator over the header fields.
pub fn len(&self) -> usize
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Returns the number of headers in the map.
pub fn clear(&mut self)
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Remove all headers from the map.
Trait Implementations
impl Clone for Headers
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fn clone(&self) -> Headers
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Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
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Performs copy-assignment from source
. Read more
impl PartialEq for Headers
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fn eq(&self, other: &Headers) -> bool
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This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
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This method tests for !=
.
impl Display for Headers
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fn fmt(&self, f: &mut Formatter) -> Result
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Formats the value using the given formatter. Read more
impl Debug for Headers
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fn fmt(&self, f: &mut Formatter) -> Result
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Formats the value using the given formatter. Read more
impl<'a> Extend<HeaderView<'a>> for Headers
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fn extend<I: IntoIterator<Item = HeaderView<'a>>>(&mut self, iter: I)
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Extends a collection with the contents of an iterator. Read more
impl<'a> FromIterator<HeaderView<'a>> for Headers
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fn from_iter<I: IntoIterator<Item = HeaderView<'a>>>(iter: I) -> Headers
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Creates a value from an iterator. Read more