Struct GetForwardedHeaderLayer

pub struct GetForwardedHeaderLayer<T = Forwarded> { /* private fields */ }
Expand description

Layer to extract Forwarded information from the specified T headers.

This layer can be used to extract the Forwarded information from any specified header T, as long as the header implements the ForwardHeader trait.

The following headers are supported by default:

Rama also has the following headers already implemented for you to use:

X-Real-Ip, X-Client-Ip, Client-Ip, Cf-Connecting-Ip and True-Client-Ip.

There are no GetForwardedHeaderLayer constructors for these headers, but you can use the GetForwardedHeaderLayer::new constructor and pass the header type as a type parameter, alone or in a tuple with other headers.

§Example

This example shows you can extract the client IP from the X-Forwarded-For header in case your application is behind a proxy which sets this header.

use rama_core::{
    service::service_fn,
    Context, Service, Layer,
};
use rama_http::{headers::forwarded::Forwarded, layer::forwarded::GetForwardedHeaderLayer, Request};
use std::{convert::Infallible, net::IpAddr};

#[tokio::main]
async fn main() {
    let service = GetForwardedHeaderLayer::x_forwarded_for()
        .into_layer(service_fn(async |ctx: Context, _| {
            let forwarded = ctx.get::<rama_net::forwarded::Forwarded>().unwrap();
            assert_eq!(forwarded.client_ip(), Some(IpAddr::from([12, 23, 34, 45])));
            assert!(forwarded.client_proto().is_none());

            // ...

            Ok::<_, Infallible>(())
        }));

    let req = Request::builder()
        .header("X-Forwarded-For", "12.23.34.45")
        .body(())
        .unwrap();

    service.serve(Context::default(), req).await.unwrap();
}

Implementations§

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impl<T> GetForwardedHeaderLayer<T>

pub const fn new() -> GetForwardedHeaderLayer<T>

Create a new GetForwardedHeaderLayer for the specified headers T.

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impl GetForwardedHeaderLayer

pub fn forwarded() -> GetForwardedHeaderLayer

Create a new GetForwardedHeaderLayer for the standard Forwarded header.

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impl GetForwardedHeaderLayer<Via>

pub fn via() -> GetForwardedHeaderLayer<Via>

Create a new GetForwardedHeaderLayer for the canonical Via header.

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impl GetForwardedHeaderLayer<XForwardedFor>

pub fn x_forwarded_for() -> GetForwardedHeaderLayer<XForwardedFor>

Create a new GetForwardedHeaderLayer for the canonical [X-Forwarded-For] header.

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impl GetForwardedHeaderLayer<XForwardedHost>

pub fn x_forwarded_host() -> GetForwardedHeaderLayer<XForwardedHost>

Create a new GetForwardedHeaderLayer for the canonical [X-Forwarded-Host] header.

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impl GetForwardedHeaderLayer<XForwardedProto>

pub fn x_forwarded_proto() -> GetForwardedHeaderLayer<XForwardedProto>

Create a new GetForwardedHeaderLayer for the canonical [X-Forwarded-Proto] header.

Trait Implementations§

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

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fn clone(&self) -> GetForwardedHeaderLayer<T>

Returns a duplicate of the value. Read more
1.0.0 · Source§

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

Performs copy-assignment from source. Read more
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impl<T> Debug for GetForwardedHeaderLayer<T>
where T: 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 Default for GetForwardedHeaderLayer

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fn default() -> GetForwardedHeaderLayer

Returns the “default value” for a type. Read more
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impl<H, S> Layer<S> for GetForwardedHeaderLayer<H>

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type Service = GetForwardedHeaderService<S, H>

The service produced by the layer.
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fn layer(&self, inner: S) -> <GetForwardedHeaderLayer<H> as Layer<S>>::Service

Wrap the given service with the middleware, returning a new service.
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fn into_layer(self, inner: S) -> Self::Service

Same as layer but consuming self after the service was created. Read more

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