Struct AppendHeaders

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pub struct AppendHeaders<I>(pub I);

Expand description

Append headers to a response.

Returning something like [("content-type", "foo=bar")] from a handler will override any existing content-type headers. If instead you want to append headers, use AppendHeaders:

use axum::{
    response::{AppendHeaders, IntoResponse},
    http::header::SET_COOKIE,
};

async fn handler() -> impl IntoResponse {
    // something that sets the `set-cookie` header
    let set_some_cookies = /* ... */

    (
        set_some_cookies,
        // append two `set-cookie` headers to the response
        // without overriding the ones added by `set_some_cookies`
        AppendHeaders([
            (SET_COOKIE, "foo=bar"),
            (SET_COOKIE, "baz=qux"),
        ])
    )
}

Tuple Fields§

§0: I

Trait Implementations§

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impl Clone for AppendHeaders
where I: Clone,

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fn clone(&self) -> AppendHeaders

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 AppendHeaders
where I: Debug,

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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<I, K, V> IntoResponse for AppendHeaders
where I: IntoIterator<Item = (K, V)>, K: TryInto<HeaderName>, <K as TryInto<HeaderName>>::Error: Display, V: TryInto<HeaderValue>, <V as TryInto<HeaderValue>>::Error: Display,

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fn into_response(self) -> Response<Body>

Create a response.

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impl<I, K, V> IntoResponseParts for AppendHeaders
where I: IntoIterator<Item = (K, V)>, K: TryInto<HeaderName>, <K as TryInto<HeaderName>>::Error: Display, V: TryInto<HeaderValue>, <V as TryInto<HeaderValue>>::Error: Display,

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type Error = TryIntoHeaderError<<K as TryInto<HeaderName>>::Error, <V as TryInto<HeaderValue>>::Error>

The type returned in the event of an error. Read more

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fn into_response_parts( self, res: ResponseParts, ) -> Result<ResponseParts, <AppendHeaders as IntoResponseParts>::Error>

Set parts of the response

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impl Copy for AppendHeaders
where I: Copy,

Auto Trait Implementations§

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impl UnwindSafe for AppendHeaders
where I: UnwindSafe,

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, dst: *mut u8)

🔬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> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FromRef<T> for T
where T: Clone,

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fn from_ref(input: &T) -> T

Converts to this type from a reference to the input type.

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impl<T, S> Handler<IntoResponseHandler, S> for T
where T: IntoResponse + Clone + Send + Sync + 'static,

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type Future = Ready<Response<Body>>

The type of future calling this handler returns.

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fn call( self, _req: Request<Body>, _state: S, ) -> <T as Handler<IntoResponseHandler, S>>::Future

Call the handler with the given request.

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fn layer<L>(self, layer: L) -> Layered<L, Self, T, S>
where L: Layer<HandlerService<Self, T, S>> + Clone, <L as Layer<HandlerService<Self, T, S>>>::Service: Service<Request<Body>>,

Apply a tower::Layer to the handler. Read more

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fn with_state(self, state: S) -> HandlerService<Self, T, S>

Convert the handler into a Service by providing the state

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impl<H, T> HandlerWithoutStateExt<T> for H
where H: Handler<T, ()>,

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fn into_service(self) -> HandlerService<H, T, ()>

Convert the handler into a Service and no state.

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fn into_make_service(self) -> IntoMakeService<HandlerService<H, T, ()>>

Convert the handler into a MakeService and no state. Read more

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fn into_make_service_with_connect_info<C>( self, ) -> IntoMakeServiceWithConnectInfo<HandlerService<H, T, ()>, C>

Convert the handler into a MakeService which stores information about the incoming connection and has no state. Read more

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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 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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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