Struct hyper::header::Headers

pub struct Headers { /* fields omitted */ }

A map of header fields on requests and responses.

Methods

impl Headers

fn new() -> Headers

Creates a new, empty headers map.

fn set<H: Header>(&mut self, value: H)

Set a header field to the corresponding value.

The field is determined by the type of the value being set.

fn get<H: Header>(&self) -> Option<&H>

Get a reference to the header field's value, if it exists.

fn get_mut<H: Header>(&mut self) -> Option<&mut H>

Get a mutable reference to the header field's value, if it exists.

fn has<H: Header>(&self) -> bool

Returns a boolean of whether a certain header is in the map.

Example:

let has_type = headers.has::<ContentType>();

fn remove<H: Header>(&mut self) -> Option<H>

Removes a header from the map, if one existed. Returns the header, if one has been removed and could be parsed.

Note that this function may return None even though a header was removed. If you want to know whether a header exists, rather rely on has.

fn iter(&self) -> HeadersItems

Returns an iterator over the header fields.

fn len(&self) -> usize

Returns the number of headers in the map.

fn clear(&mut self)

Remove all headers from the map.

fn get_raw(&self, name: &str) -> Option<&Raw>

Access the raw value of a header.

Prefer to use the typed getters instead.

Example:

let raw = headers.get_raw("content-type").unwrap();
assert_eq!(raw, "text/plain");

fn set_raw<K: Into<Cow<'static, str>>, V: Into<Raw>>(&mut self,
                                                     name: K,
                                                     value: V)

Set the raw value of a header, bypassing any typed headers.

Example:

headers.set_raw("content-length", b"1".as_ref());
headers.set_raw("content-length", "2");
headers.set_raw("content-length", "3".to_string());
headers.set_raw("content-length", vec![vec![b'4']]);

fn remove_raw(&mut self, name: &str)

Remove a header by name.

Trait Implementations

impl Clone for Headers

fn clone(&self) -> Headers

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for Headers

fn default() -> Headers

Returns the "default value" for a type.

impl PartialEq for Headers

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

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

fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl Display for Headers

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

Formats the value using the given formatter.

impl Debug for Headers

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

Formats the value using the given formatter.

impl<'a> Extend<HeaderView<'a>> for Headers

fn extend<I: IntoIterator<Item=HeaderView<'a>>>(&mut self, iter: I)

Extends a collection with the contents of an iterator.

impl<'a> FromIterator<HeaderView<'a>> for Headers

fn from_iter<I: IntoIterator<Item=HeaderView<'a>>>(iter: I) -> Headers

Creates a value from an iterator.