RpcAddOns

Struct RpcAddOns 

Source
pub struct RpcAddOns<Node, EthB, PVB, EB = BasicEngineApiBuilder<PVB>, EVB = BasicEngineValidatorBuilder<PVB>, RpcMiddleware = Identity>
where Node: FullNodeComponents, EthB: EthApiBuilder<Node>,
{ pub hooks: RpcHooks<Node, <EthB as EthApiBuilder<Node>>::EthApi>, /* private fields */ }
Expand description

Node add-ons containing RPC server configuration, with customizable eth API handler.

This struct can be used to provide the RPC server functionality. It is responsible for launching the regular RPC and the authenticated RPC server (engine API). It is intended to be used and modified as part of the NodeAddOns see for example OpRpcAddons, EthereumAddOns.

It can be modified to register RPC API handlers, see RpcAddOns::launch_add_ons_with which takes a closure that provides access to all the configured modules (namespaces), and is invoked just before the servers are launched. This can be used to extend the node with custom RPC methods or even replace existing method handlers, see also TransportRpcModules.

Fields§

§hooks: RpcHooks<Node, <EthB as EthApiBuilder<Node>>::EthApi>

Additional RPC add-ons.

Implementations§

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impl<Node, EthB, PVB, EB, EVB, RpcMiddleware> RpcAddOns<Node, EthB, PVB, EB, EVB, RpcMiddleware>
where Node: FullNodeComponents, EthB: EthApiBuilder<Node>,

Source

pub fn new( eth_api_builder: EthB, payload_validator_builder: PVB, engine_api_builder: EB, engine_validator_builder: EVB, rpc_middleware: RpcMiddleware, ) -> RpcAddOns<Node, EthB, PVB, EB, EVB, RpcMiddleware>

Creates a new instance of the RPC add-ons.

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pub fn with_engine_api<T>( self, engine_api_builder: T, ) -> RpcAddOns<Node, EthB, PVB, T, EVB, RpcMiddleware>

Maps the EngineApiBuilder builder type.

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pub fn with_payload_validator<T>( self, payload_validator_builder: T, ) -> RpcAddOns<Node, EthB, T, EB, EVB, RpcMiddleware>

Maps the PayloadValidatorBuilder builder type.

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pub fn with_engine_validator<T>( self, engine_validator_builder: T, ) -> RpcAddOns<Node, EthB, PVB, EB, T, RpcMiddleware>

Maps the EngineValidatorBuilder builder type.

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pub fn with_rpc_middleware<T>( self, rpc_middleware: T, ) -> RpcAddOns<Node, EthB, PVB, EB, EVB, T>

Sets the RPC middleware stack for processing RPC requests.

This method configures a custom middleware stack that will be applied to all RPC requests across HTTP, WebSocket, and IPC transports. The middleware is applied to the RPC service layer, allowing you to intercept, modify, or enhance RPC request processing.

§How It Works

The middleware uses the Tower ecosystem’s Layer pattern. When an RPC server is started, the configured middleware stack is applied to create a layered service that processes requests in the order the layers were added.

§Examples
use reth_rpc_builder::{RpcServiceBuilder, RpcRequestMetrics};
use tower::Layer;

// Simple example with metrics
let metrics_layer = RpcRequestMetrics::new(metrics_recorder);
let with_metrics = rpc_addons.with_rpc_middleware(
    RpcServiceBuilder::new().layer(metrics_layer)
);

// Composing multiple middleware layers
let middleware_stack = RpcServiceBuilder::new()
    .layer(rate_limit_layer)
    .layer(logging_layer)
    .layer(metrics_layer);
let with_full_stack = rpc_addons.with_rpc_middleware(middleware_stack);
§Notes
  • Middleware is applied to the RPC service layer, not the HTTP transport layer
  • The default middleware is Identity (no-op), which passes through requests unchanged
  • Middleware layers are applied in the order they are added via .layer()
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pub fn with_tokio_runtime( self, tokio_runtime: Option<Handle>, ) -> RpcAddOns<Node, EthB, PVB, EB, EVB, RpcMiddleware>

Sets the tokio runtime for the RPC servers.

Caution: This runtime must not be created from within asynchronous context.

Source

pub fn layer_rpc_middleware<T>( self, layer: T, ) -> RpcAddOns<Node, EthB, PVB, EB, EVB, Stack<RpcMiddleware, T>>

Add a new layer T to the configured RpcServiceBuilder.

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pub fn option_layer_rpc_middleware<T>( self, layer: Option<T>, ) -> RpcAddOns<Node, EthB, PVB, EB, EVB, Stack<RpcMiddleware, Either<T, Identity>>>

Optionally adds a new layer T to the configured RpcServiceBuilder.

Source

pub fn on_rpc_started<F>( self, hook: F, ) -> RpcAddOns<Node, EthB, PVB, EB, EVB, RpcMiddleware>
where F: FnOnce(RpcContext<'_, Node, <EthB as EthApiBuilder<Node>>::EthApi>, RethRpcServerHandles) -> Result<(), Report> + Send + 'static,

Sets the hook that is run once the rpc server is started.

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pub fn extend_rpc_modules<F>( self, hook: F, ) -> RpcAddOns<Node, EthB, PVB, EB, EVB, RpcMiddleware>
where F: FnOnce(RpcContext<'_, Node, <EthB as EthApiBuilder<Node>>::EthApi>) -> Result<(), Report> + Send + 'static,

Sets the hook that is run to configure the rpc modules.

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impl<N, EthB, PVB, EB, EVB, RpcMiddleware> RpcAddOns<N, EthB, PVB, EB, EVB, RpcMiddleware>

Source

pub async fn launch_rpc_server<F>( self, ctx: AddOnsContext<'_, N>, ext: F, ) -> Result<RpcServerOnlyHandle<N, <EthB as EthApiBuilder<N>>::EthApi>, Report>
where F: FnOnce(RpcModuleContainer<'_, N, <EthB as EthApiBuilder<N>>::EthApi>) -> Result<(), Report>,

Launches only the regular RPC server (HTTP/WS/IPC), without the authenticated Engine API server.

This is useful when you only need the regular RPC functionality and want to avoid starting the auth server.

Source

pub async fn launch_add_ons_with<F>( self, ctx: AddOnsContext<'_, N>, ext: F, ) -> Result<RpcHandle<N, <EthB as EthApiBuilder<N>>::EthApi>, Report>
where F: FnOnce(RpcModuleContainer<'_, N, <EthB as EthApiBuilder<N>>::EthApi>) -> Result<(), Report>,

Launches the RPC servers with the given context and an additional hook for extending modules. Whether the auth server is launched depends on the CLI configuration.

Source

pub async fn launch_add_ons_with_opt_engine<F>( self, ctx: AddOnsContext<'_, N>, ext: F, disable_auth: bool, ) -> Result<RpcHandle<N, <EthB as EthApiBuilder<N>>::EthApi>, Report>
where F: FnOnce(RpcModuleContainer<'_, N, <EthB as EthApiBuilder<N>>::EthApi>) -> Result<(), Report>,

Launches the RPC servers with the given context and an additional hook for extending modules. Optionally disables the auth server based on the disable_auth parameter.

When disable_auth is true, the auth server will not be started and a noop handle will be used instead.

Trait Implementations§

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impl<Node, EthB, PVB, EB, EVB, RpcMiddleware> Debug for RpcAddOns<Node, EthB, PVB, EB, EVB, RpcMiddleware>
where Node: FullNodeComponents, EthB: EthApiBuilder<Node>, PVB: Debug, EB: Debug, EVB: 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<Node, EthB, EV, EB, Engine> Default for RpcAddOns<Node, EthB, EV, EB, Engine>
where Node: FullNodeComponents, EthB: EthApiBuilder<Node>, EV: Default, EB: Default, Engine: Default,

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fn default() -> RpcAddOns<Node, EthB, EV, EB, Engine>

Returns the “default value” for a type. Read more
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impl<N, EthB, PVB, EB, EVB, RpcMiddleware> EngineValidatorAddOn<N> for RpcAddOns<N, EthB, PVB, EB, EVB, RpcMiddleware>
where N: FullNodeComponents, EthB: EthApiBuilder<N>, PVB: Send, EB: EngineApiBuilder<N>, EVB: EngineValidatorBuilder<N>, RpcMiddleware: Send,

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type ValidatorBuilder = EVB

The validator builder type to use.
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fn engine_validator_builder( &self, ) -> <RpcAddOns<N, EthB, PVB, EB, EVB, RpcMiddleware> as EngineValidatorAddOn<N>>::ValidatorBuilder

Returns the validator builder.
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impl<N, EthB, PVB, EB, EVB, RpcMiddleware> NodeAddOns<N> for RpcAddOns<N, EthB, PVB, EB, EVB, RpcMiddleware>

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type Handle = RpcHandle<N, <EthB as EthApiBuilder<N>>::EthApi>

Handle to add-ons. Read more
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async fn launch_add_ons( self, ctx: AddOnsContext<'_, N>, ) -> Result<<RpcAddOns<N, EthB, PVB, EB, EVB, RpcMiddleware> as NodeAddOns<N>>::Handle, Report>

Configures and launches the add-ons. Read more
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impl<N, EthB, EV, EB, Engine, RpcMiddleware> RethRpcAddOns<N> for RpcAddOns<N, EthB, EV, EB, Engine, RpcMiddleware>
where N: FullNodeComponents, RpcAddOns<N, EthB, EV, EB, Engine, RpcMiddleware>: NodeAddOns<N, Handle = RpcHandle<N, <EthB as EthApiBuilder<N>>::EthApi>>, EthB: EthApiBuilder<N>,

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type EthApi = <EthB as EthApiBuilder<N>>::EthApi

eth API implementation.
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fn hooks_mut( &mut self, ) -> &mut RpcHooks<N, <RpcAddOns<N, EthB, EV, EB, Engine, RpcMiddleware> as RethRpcAddOns<N>>::EthApi>

Returns a mutable reference to RPC hooks.

Auto Trait Implementations§

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impl<Node, EthB, PVB, EB, EVB, RpcMiddleware> Freeze for RpcAddOns<Node, EthB, PVB, EB, EVB, RpcMiddleware>
where EthB: Freeze, PVB: Freeze, EB: Freeze, EVB: Freeze, RpcMiddleware: Freeze,

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impl<Node, EthB, PVB, EB = BasicEngineApiBuilder<PVB>, EVB = BasicEngineValidatorBuilder<PVB>, RpcMiddleware = Identity> !RefUnwindSafe for RpcAddOns<Node, EthB, PVB, EB, EVB, RpcMiddleware>

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impl<Node, EthB, PVB, EB, EVB, RpcMiddleware> Send for RpcAddOns<Node, EthB, PVB, EB, EVB, RpcMiddleware>
where PVB: Send, EB: Send, EVB: Send, RpcMiddleware: Send,

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impl<Node, EthB, PVB, EB = BasicEngineApiBuilder<PVB>, EVB = BasicEngineValidatorBuilder<PVB>, RpcMiddleware = Identity> !Sync for RpcAddOns<Node, EthB, PVB, EB, EVB, RpcMiddleware>

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impl<Node, EthB, PVB, EB, EVB, RpcMiddleware> Unpin for RpcAddOns<Node, EthB, PVB, EB, EVB, RpcMiddleware>
where EthB: Unpin, PVB: Unpin, EB: Unpin, EVB: Unpin, RpcMiddleware: Unpin,

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impl<Node, EthB, PVB, EB = BasicEngineApiBuilder<PVB>, EVB = BasicEngineValidatorBuilder<PVB>, RpcMiddleware = Identity> !UnwindSafe for RpcAddOns<Node, EthB, PVB, EB, EVB, RpcMiddleware>

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fn new(self) -> Painted<Self>
where Self: Sized,

Create a new [Painted] with a default [Style]. Read more
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fn paint<S>(&self, style: S) -> Painted<&Self>
where S: Into<Style>,

Apply a style wholesale to self. Any previous style is replaced. Read more
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impl<T> Pipe for T
where T: ?Sized,

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fn pipe<R>(self, func: impl FnOnce(Self) -> R) -> R
where Self: Sized,

Pipes by value. This is generally the method you want to use. Read more
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fn pipe_ref<'a, R>(&'a self, func: impl FnOnce(&'a Self) -> R) -> R
where R: 'a,

Borrows self and passes that borrow into the pipe function. Read more
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fn pipe_ref_mut<'a, R>(&'a mut self, func: impl FnOnce(&'a mut Self) -> R) -> R
where R: 'a,

Mutably borrows self and passes that borrow into the pipe function. Read more
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fn pipe_borrow<'a, B, R>(&'a self, func: impl FnOnce(&'a B) -> R) -> R
where Self: Borrow<B>, B: 'a + ?Sized, R: 'a,

Borrows self, then passes self.borrow() into the pipe function. Read more
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fn pipe_borrow_mut<'a, B, R>( &'a mut self, func: impl FnOnce(&'a mut B) -> R, ) -> R
where Self: BorrowMut<B>, B: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.borrow_mut() into the pipe function. Read more
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fn pipe_as_ref<'a, U, R>(&'a self, func: impl FnOnce(&'a U) -> R) -> R
where Self: AsRef<U>, U: 'a + ?Sized, R: 'a,

Borrows self, then passes self.as_ref() into the pipe function.
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fn pipe_as_mut<'a, U, R>(&'a mut self, func: impl FnOnce(&'a mut U) -> R) -> R
where Self: AsMut<U>, U: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.as_mut() into the pipe function.
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fn pipe_deref<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> R
where Self: Deref<Target = T>, T: 'a + ?Sized, R: 'a,

Borrows self, then passes self.deref() into the pipe function.
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fn pipe_deref_mut<'a, T, R>( &'a mut self, func: impl FnOnce(&'a mut T) -> R, ) -> R
where Self: DerefMut<Target = T> + Deref, T: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.deref_mut() into the pipe function.
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> PolicyExt for T
where T: ?Sized,

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fn and<P, B, E>(self, other: P) -> And<T, P>
where T: Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns [Action::Follow] only if self and other return Action::Follow. Read more
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fn or<P, B, E>(self, other: P) -> Or<T, P>
where T: Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns [Action::Follow] if either self or other returns Action::Follow. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ServiceExt for T

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fn propagate_header(self, header: HeaderName) -> PropagateHeader<Self>
where Self: Sized,

Propagate a header from the request to the response. Read more
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fn add_extension<T>(self, value: T) -> AddExtension<Self, T>
where Self: Sized,

Add some shareable value to request extensions. Read more
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fn map_request_body<F>(self, f: F) -> MapRequestBody<Self, F>
where Self: Sized,

Apply a transformation to the request body. Read more
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fn map_response_body<F>(self, f: F) -> MapResponseBody<Self, F>
where Self: Sized,

Apply a transformation to the response body. Read more
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fn compression(self) -> Compression<Self>
where Self: Sized,

Compresses response bodies. Read more
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fn decompression(self) -> Decompression<Self>
where Self: Sized,

Decompress response bodies. Read more
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fn trace_for_http(self) -> Trace<Self, SharedClassifier<ServerErrorsAsFailures>>
where Self: Sized,

High level tracing that classifies responses using HTTP status codes. Read more
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fn trace_for_grpc(self) -> Trace<Self, SharedClassifier<GrpcErrorsAsFailures>>
where Self: Sized,

High level tracing that classifies responses using gRPC headers. Read more
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fn follow_redirects(self) -> FollowRedirect<Self>
where Self: Sized,

Follow redirect resposes using the Standard policy. Read more
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fn sensitive_headers( self, headers: impl IntoIterator<Item = HeaderName>, ) -> SetSensitiveRequestHeaders<SetSensitiveResponseHeaders<Self>>
where Self: Sized,

Mark headers as sensitive on both requests and responses. Read more
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fn sensitive_request_headers( self, headers: impl IntoIterator<Item = HeaderName>, ) -> SetSensitiveRequestHeaders<Self>
where Self: Sized,

Mark headers as sensitive on requests. Read more
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fn sensitive_response_headers( self, headers: impl IntoIterator<Item = HeaderName>, ) -> SetSensitiveResponseHeaders<Self>
where Self: Sized,

Mark headers as sensitive on responses. Read more
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fn override_request_header<M>( self, header_name: HeaderName, make: M, ) -> SetRequestHeader<Self, M>
where Self: Sized,

Insert a header into the request. Read more
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fn append_request_header<M>( self, header_name: HeaderName, make: M, ) -> SetRequestHeader<Self, M>
where Self: Sized,

Append a header into the request. Read more
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fn insert_request_header_if_not_present<M>( self, header_name: HeaderName, make: M, ) -> SetRequestHeader<Self, M>
where Self: Sized,

Insert a header into the request, if the header is not already present. Read more
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fn override_response_header<M>( self, header_name: HeaderName, make: M, ) -> SetResponseHeader<Self, M>
where Self: Sized,

Insert a header into the response. Read more
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fn append_response_header<M>( self, header_name: HeaderName, make: M, ) -> SetResponseHeader<Self, M>
where Self: Sized,

Append a header into the response. Read more
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fn insert_response_header_if_not_present<M>( self, header_name: HeaderName, make: M, ) -> SetResponseHeader<Self, M>
where Self: Sized,

Insert a header into the response, if the header is not already present. Read more
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fn set_request_id<M>( self, header_name: HeaderName, make_request_id: M, ) -> SetRequestId<Self, M>
where Self: Sized, M: MakeRequestId,

Add request id header and extension. Read more
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fn set_x_request_id<M>(self, make_request_id: M) -> SetRequestId<Self, M>
where Self: Sized, M: MakeRequestId,

Add request id header and extension, using x-request-id as the header name. Read more
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fn propagate_request_id( self, header_name: HeaderName, ) -> PropagateRequestId<Self>
where Self: Sized,

Propgate request ids from requests to responses. Read more
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fn propagate_x_request_id(self) -> PropagateRequestId<Self>
where Self: Sized,

Propgate request ids from requests to responses, using x-request-id as the header name. Read more
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fn catch_panic(self) -> CatchPanic<Self, DefaultResponseForPanic>
where Self: Sized,

Catch panics and convert them into 500 Internal Server responses. Read more
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fn request_body_limit(self, limit: usize) -> RequestBodyLimit<Self>
where Self: Sized,

Intercept requests with over-sized payloads and convert them into 413 Payload Too Large responses. Read more
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fn trim_trailing_slash(self) -> NormalizePath<Self>
where Self: Sized,

Remove trailing slashes from paths. Read more
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fn append_trailing_slash(self) -> NormalizePath<Self>
where Self: Sized,

Append trailing slash to paths. Read more
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impl<T> Tap for T

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fn tap(self, func: impl FnOnce(&Self)) -> Self

Immutable access to a value. Read more
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fn tap_mut(self, func: impl FnOnce(&mut Self)) -> Self

Mutable access to a value. Read more
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fn tap_borrow<B>(self, func: impl FnOnce(&B)) -> Self
where Self: Borrow<B>, B: ?Sized,

Immutable access to the Borrow<B> of a value. Read more
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fn tap_borrow_mut<B>(self, func: impl FnOnce(&mut B)) -> Self
where Self: BorrowMut<B>, B: ?Sized,

Mutable access to the BorrowMut<B> of a value. Read more
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fn tap_ref<R>(self, func: impl FnOnce(&R)) -> Self
where Self: AsRef<R>, R: ?Sized,

Immutable access to the AsRef<R> view of a value. Read more
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fn tap_ref_mut<R>(self, func: impl FnOnce(&mut R)) -> Self
where Self: AsMut<R>, R: ?Sized,

Mutable access to the AsMut<R> view of a value. Read more
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fn tap_deref<T>(self, func: impl FnOnce(&T)) -> Self
where Self: Deref<Target = T>, T: ?Sized,

Immutable access to the Deref::Target of a value. Read more
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fn tap_deref_mut<T>(self, func: impl FnOnce(&mut T)) -> Self
where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Mutable access to the Deref::Target of a value. Read more
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fn tap_dbg(self, func: impl FnOnce(&Self)) -> Self

Calls .tap() only in debug builds, and is erased in release builds.
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fn tap_mut_dbg(self, func: impl FnOnce(&mut Self)) -> Self

Calls .tap_mut() only in debug builds, and is erased in release builds.
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fn tap_borrow_dbg<B>(self, func: impl FnOnce(&B)) -> Self
where Self: Borrow<B>, B: ?Sized,

Calls .tap_borrow() only in debug builds, and is erased in release builds.
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fn tap_borrow_mut_dbg<B>(self, func: impl FnOnce(&mut B)) -> Self
where Self: BorrowMut<B>, B: ?Sized,

Calls .tap_borrow_mut() only in debug builds, and is erased in release builds.
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fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self
where Self: AsRef<R>, R: ?Sized,

Calls .tap_ref() only in debug builds, and is erased in release builds.
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fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self
where Self: AsMut<R>, R: ?Sized,

Calls .tap_ref_mut() only in debug builds, and is erased in release builds.
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fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self
where Self: Deref<Target = T>, T: ?Sized,

Calls .tap_deref() only in debug builds, and is erased in release builds.
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fn tap_deref_mut_dbg<T>(self, func: impl FnOnce(&mut T)) -> Self
where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Calls .tap_deref_mut() only in debug builds, and is erased in release builds.
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impl<T> TryConv for T

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fn try_conv<T>(self) -> Result<T, Self::Error>
where Self: TryInto<T>,

Attempts to convert self into T using TryInto<T>. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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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 T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where 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
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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
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impl<T> ErasedDestructor for T
where T: 'static,

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impl<T> ErasedDestructor for T
where T: 'static,

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impl<T> MaybeDebug for T
where T: Debug,

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impl<T> MaybeSend for T
where T: Send,

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impl<T> MaybeSendSync for T

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Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.