reth_dns_discovery

Struct DnsDiscoveryService

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pub struct DnsDiscoveryService<R: Resolver = DnsResolver> { /* private fields */ }
Expand description

A client that discovers nodes via DNS.

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impl<R: Resolver> DnsDiscoveryService<R>

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pub fn new(resolver: Arc<R>, config: DnsDiscoveryConfig) -> Self

Creates a new instance of the DnsDiscoveryService using the given settings.

use reth_dns_discovery::{DnsDiscoveryService, DnsResolver};
use std::sync::Arc;
let service = DnsDiscoveryService::new(
    Arc::new(DnsResolver::from_system_conf().unwrap()),
    Default::default(),
);
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pub fn spawn(self) -> JoinHandle<()>

Spawns this services onto a new task

Note: requires a running runtime

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pub fn bootstrap(&mut self)

Starts discovery with all configured bootstrap links

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pub fn new_pair( resolver: Arc<R>, config: DnsDiscoveryConfig, ) -> (Self, DnsDiscoveryHandle)

Same as DnsDiscoveryService::new but also returns a new handle that’s connected to the service

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pub fn handle(&self) -> DnsDiscoveryHandle

Returns a new DnsDiscoveryHandle that can send commands to this type.

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pub fn node_record_stream(&mut self) -> ReceiverStream<DnsNodeRecordUpdate>

Creates a new channel for [NodeRecord]s.

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pub fn sync_tree(&mut self, link: &str) -> Result<(), ParseDnsEntryError>

Starts syncing the given link to a tree.

Starts syncing the given link to a tree.

Trait Implementations§

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impl<R: Resolver> Stream for DnsDiscoveryService<R>

A Stream events, mainly used for debugging

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type Item = DnsDiscoveryEvent

Values yielded by the stream.
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fn poll_next( self: Pin<&mut Self>, cx: &mut Context<'_>, ) -> Poll<Option<Self::Item>>

Attempt to pull out the next value of this stream, registering the current task for wakeup if the value is not yet available, and returning None if the stream is exhausted. Read more
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fn size_hint(&self) -> (usize, Option<usize>)

Returns the bounds on the remaining length of the stream. Read more

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Filters the values produced by this stream while simultaneously mapping them to a different type according to the provided asynchronous closure. Read more
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fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F>
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fn flat_map_unordered<U, F>( self, limit: impl Into<Option<usize>>, f: F, ) -> FlatMapUnordered<Self, U, F>
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fn scan<S, B, Fut, F>(self, initial_state: S, f: F) -> Scan<Self, S, Fut, F>
where F: FnMut(&mut S, Self::Item) -> Fut, Fut: Future<Output = Option<B>>, Self: Sized,

Combinator similar to [StreamExt::fold] that holds internal state and produces a new stream. Read more
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fn skip_while<Fut, F>(self, f: F) -> SkipWhile<Self, Fut, F>
where F: FnMut(&Self::Item) -> Fut, Fut: Future<Output = bool>, Self: Sized,

Skip elements on this stream while the provided asynchronous predicate resolves to true. Read more
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fn take_while<Fut, F>(self, f: F) -> TakeWhile<Self, Fut, F>
where F: FnMut(&Self::Item) -> Fut, Fut: Future<Output = bool>, Self: Sized,

Take elements from this stream while the provided asynchronous predicate resolves to true. Read more
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fn take_until<Fut>(self, fut: Fut) -> TakeUntil<Self, Fut>
where Fut: Future, Self: Sized,

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fn for_each<Fut, F>(self, f: F) -> ForEach<Self, Fut, F>
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Runs this stream to completion, executing the provided asynchronous closure for each element on the stream. Read more
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fn for_each_concurrent<Fut, F>( self, limit: impl Into<Option<usize>>, f: F, ) -> ForEachConcurrent<Self, Fut, F>
where F: FnMut(Self::Item) -> Fut, Fut: Future<Output = ()>, Self: Sized,

Available on crate feature alloc only.
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fn take(self, n: usize) -> Take<Self>
where Self: Sized,

Creates a new stream of at most n items of the underlying stream. Read more
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fn skip(self, n: usize) -> Skip<Self>
where Self: Sized,

Creates a new stream which skips n items of the underlying stream. Read more
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fn fuse(self) -> Fuse<Self>
where Self: Sized,

Fuse a stream such that poll_next will never again be called once it has finished. This method can be used to turn any Stream into a FusedStream. Read more
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Borrows a stream, rather than consuming it. Read more
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fn catch_unwind(self) -> CatchUnwind<Self>
where Self: Sized + UnwindSafe,

Available on crate feature std only.
Catches unwinding panics while polling the stream. Read more
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fn boxed<'a>(self) -> Pin<Box<dyn Stream<Item = Self::Item> + Send + 'a>>
where Self: Sized + Send + 'a,

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fn buffered(self, n: usize) -> Buffered<Self>
where Self::Item: Future, Self: Sized,

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fn buffer_unordered(self, n: usize) -> BufferUnordered<Self>
where Self::Item: Future, Self: Sized,

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fn zip<St>(self, other: St) -> Zip<Self, St>
where St: Stream, Self: Sized,

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fn chain<St>(self, other: St) -> Chain<Self, St>
where St: Stream<Item = Self::Item>, Self: Sized,

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fn peekable(self) -> Peekable<Self>
where Self: Sized,

Creates a new stream which exposes a peek method. Read more
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fn chunks(self, capacity: usize) -> Chunks<Self>
where Self: Sized,

Available on crate feature alloc only.
An adaptor for chunking up items of the stream inside a vector. Read more
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fn ready_chunks(self, capacity: usize) -> ReadyChunks<Self>
where Self: Sized,

Available on crate feature alloc only.
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fn forward<S>(self, sink: S) -> Forward<Self, S>
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fn split<Item>(self) -> (SplitSink<Self, Item>, SplitStream<Self>)
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fn poll_next_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Option<Self::Item>>
where Self: Unpin,

A convenience method for calling [Stream::poll_next] on Unpin stream types.
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where Self: Unpin + FusedStream,

Returns a Future that resolves when the next item in this stream is ready. Read more
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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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where U: TryFrom<T>,

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

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

Performs the conversion.
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fn vzip(self) -> V

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where S: Into<Dispatch>,

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impl<T> ErasedDestructor for T
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impl<T> MaybeSendSync for T

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Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 432 bytes