Struct libp2p_dns::DnsConfig

pub struct DnsConfig<T> { /* private fields */ }

Represents the configuration for a DNS transport capability of libp2p.

This struct implements the Transport trait and holds an underlying transport. Any call to dial with a multiaddr that contains /dns/, /dns4/, or /dns6/ will be first be resolved, then passed to the underlying transport.

Listening is unaffected.

Implementations

impl<T> DnsConfig<T>

pub fn new(inner: T) -> Result<DnsConfig<T>, Error>

Creates a new configuration object for DNS.

pub fn with_resolve_threads(
    inner: T,
    num_threads: usize
) -> Result<DnsConfig<T>, Error>

Same as new, but allows specifying a number of threads for the resolving.

Trait Implementations

impl<T: Clone> Clone for DnsConfig<T>

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

Returns a copy of the value.

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

Performs copy-assignment from source.

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

fn fmt(&self, fmt: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T> Transport for DnsConfig<T> where
    T: Transport + Send + 'static,
    T::Error: Send,
    T::Dial: Send, 

type Output = T::Output

The result of a connection setup process, including protocol upgrades.

type Error = DnsErr<T::Error>

An error that occurred during connection setup.

type Listener = MapErr<MapOk<T::Listener, fn(_: ListenerEvent<T::ListenerUpgrade, T::Error>) -> ListenerEvent<Self::ListenerUpgrade, Self::Error>>, fn(_: T::Error) -> Self::Error>

A stream of Outputs for inbound connections.

type ListenerUpgrade = MapErr<T::ListenerUpgrade, fn(_: T::Error) -> Self::Error>

A pending Output for an inbound connection, obtained from the Listener stream.

type Dial = Either<MapErr<T::Dial, fn(_: T::Error) -> Self::Error>, BoxFuture<'static, Result<Self::Output, Self::Error>>>

A pending Output for an outbound connection, obtained from dialing.

fn listen_on(
    self,
    addr: Multiaddr
) -> Result<Self::Listener, TransportError<Self::Error>>

Listens on the given Multiaddr, producing a stream of pending, inbound connections and addresses this transport is listening on (cf. ListenerEvent).

fn dial(
    self,
    addr: Multiaddr
) -> Result<Self::Dial, TransportError<Self::Error>>

Dials the given Multiaddr, returning a future for a pending outbound connection.

fn address_translation(
    &self,
    server: &Multiaddr,
    observed: &Multiaddr
) -> Option<Multiaddr>

Performs a transport-specific mapping of an address observed by a remote onto a local listen address to yield an address for the local node that may be reachable for other peers.

fn boxed(self) -> Boxed<Self::Output> where
    Self: 'static + Transport + Clone + Send + Sync,
    Self::Dial: 'static,
    Self::Dial: Send,
    Self::Listener: 'static,
    Self::Listener: Send,
    Self::ListenerUpgrade: 'static,
    Self::ListenerUpgrade: Send,
    Self::Error: Send,
    Self::Error: Sync, 

Boxes the transport, including custom transport errors.

fn map<F, O>(self, f: F) -> Map<Self, F> where
    F: FnOnce(Self::Output, ConnectedPoint) -> O + Clone, 

Applies a function on the connections created by the transport.

fn map_err<F, E>(self, f: F) -> MapErr<Self, F> where
    F: FnOnce(Self::Error) -> E + Clone, 

Applies a function on the errors generated by the futures of the transport.

fn or_transport<U>(self, other: U) -> OrTransport<Self, U> where
    U: Transport,
    <U as Transport>::Error: 'static, 

Adds a fallback transport that is used when encountering errors while establishing inbound or outbound connections.

fn and_then<C, F, O>(self, f: C) -> AndThen<Self, C> where
    C: FnOnce(Self::Output, ConnectedPoint) -> F + Clone,
    F: TryFuture<Ok = O>,
    <F as TryFuture>::Error: 'static,
    <F as TryFuture>::Error: Error, 

Applies a function producing an asynchronous result to every connection created by this transport.

fn upgrade(self, version: Version) -> Builder<Self> where
    Self::Error: 'static, 

Begins a series of protocol upgrades via an upgrade::Builder.