# Bearer in actix_web_httpauth::headers::www_authenticate::bearer - Rust
Challenge for `WWW-Authenticate` header with HTTP Bearer auth scheme, described in RFC 6750.
Keywords: rust, rustlang, rust-lang, Bearer

# Struct actix_web_httpauth::headers::www_authenticate::bearer::Bearer

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    pub struct Bearer { /* private fields */ }

Expand description

Challenge for `WWW-Authenticate` header with HTTP Bearer auth scheme, described in RFC 6750.

## Examples

    use actix_web_httpauth::headers::www_authenticate::bearer::{
        Bearer, Error,
    };
    use actix_web_httpauth::headers::www_authenticate::WwwAuthenticate;

    fn index(_req: HttpRequest) -> HttpResponse {
        let challenge = Bearer::build()
            .realm("example")
            .scope("openid profile email")
            .error(Error::InvalidToken)
            .error_description("The access token expired")
            .error_uri("http://example.org")
            .finish();

        HttpResponse::Unauthorized()
            .insert_header(WwwAuthenticate(challenge))
            .finish()
    }

## Implementations§

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### impl Bearer

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#### pub fn build() -> BearerBuilder

Creates the builder for `Bearer` challenge.

##### Examples

    let challenge = Bearer::build()
        .realm("Restricted area")
        .scope("openid profile email")
        .finish();

## Trait Implementations§

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### impl AsRef<Bearer> for Config

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#### fn as_ref(&self) -> &Bearer

Converts this type into a shared reference of the (usually inferred) input type.
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### impl Clone for Bearer

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#### fn clone(&self) -> Bearer

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 Bearer

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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 Default for Bearer

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#### fn default() -> Bearer

Returns the “default value” for a type. Read more
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### impl Display for Bearer

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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 Hash for Bearer

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#### fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given `Hasher`. Read more
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#### fn hash_slice<H>(data: &[Self], state: &mut H)where
H: Hasher,
Self: Sized,

Feeds a slice of this type into the given `Hasher`. Read more
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### impl Ord for Bearer

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#### fn cmp(&self, other: &Bearer) -> Ordering

This method returns an `Ordering` between `self` and `other`. Read more
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#### fn max(self, other: Self) -> Selfwhere
Self: Sized,

Compares and returns the maximum of two values. Read more
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#### fn min(self, other: Self) -> Selfwhere
Self: Sized,

Compares and returns the minimum of two values. Read more
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#### fn clamp(self, min: Self, max: Self) -> Selfwhere
Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval. Read more
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### impl PartialEq<Bearer> for Bearer

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#### fn eq(&self, other: &Bearer) -> 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 PartialOrd<Bearer> for Bearer

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#### fn partial_cmp(&self, other: &Bearer) -> Option<Ordering>

This method returns an ordering between `self` and `other` values if one exists. Read more
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#### fn lt(&self, other: &Rhs) -> bool

This method tests less than (for `self` and `other`) and is used by the `<` operator. Read more
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#### fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for `self` and `other`) and is used by the `<=` operator. Read more
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#### fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for `self` and `other`) and is used by the `>` operator. Read more
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#### fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for `self` and `other`) and is used by the `>=` operator. Read more
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### impl TryIntoHeaderValue for Bearer

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#### type Error = InvalidHeaderValue

The type returned in the event of a conversion error.
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#### fn try_into_value(self) -> Result<HeaderValue, Self::Error>

Try to convert value to a HeaderValue.
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### impl Eq for Bearer

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### impl StructuralEq for Bearer

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### impl StructuralPartialEq for Bearer

## Auto Trait Implementations§

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### impl RefUnwindSafe for Bearer

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### impl Send for Bearer

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### impl Sync for Bearer

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### impl Unpin for Bearer

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### impl UnwindSafe for Bearer

## Blanket Implementations§

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### impl<T> Any for Twhere
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 Twhere
T: ?Sized,

const: unstable · source §

#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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### impl<T> BorrowMut<T> for Twhere
T: ?Sized,

const: unstable · source §

#### fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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### impl<T> CallHasher for Twhere
T: Hash + ?Sized,

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#### default fn get_hash<H, B>(value: &H, build_hasher: &B) -> u64 where
H: Hash + ?Sized,
B: BuildHasher,

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### impl<Q, K> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,

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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> From<T> for T

const: unstable · source §

#### 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: 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 Twhere
U: From<T>,

const: unstable · source §

#### 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<T> for T

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#### type Output = T

Should always be `Self`
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### impl<T> ToOwned for Twhere
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> ToString for Twhere
T: Display + ?Sized,

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#### default fn to_string(&self) -> String

Converts the given value to a `String`. Read more
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### impl<T, U> TryFrom<U> for Twhere
U: Into<T>,

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#### type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source §

#### 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 Twhere
U: TryFrom<T>,

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

The type returned in the event of a conversion error.
const: unstable · source §

#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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### impl<V, T> VZip<V> for Twhere
V: MultiLane<T>,

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#### fn vzip(self) -> V

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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