Struct trust_dns_resolver::Background

pub struct Background<F, G = F> where
    F: Future,
    G: Future,  { /* fields omitted */ }

A future that represents sending a request to a background task, waiting for it to send back a lookup future, and then running the lookup future.

Trait Implementations

impl<TF, TG, E, F, G> From<E> for Background<F, G> where
    E: Into<ResolveError>,
    F: Future<Output = Result<TF, ResolveError>>,
    G: Future<Output = Result<TG, ResolveError>>, 

fn from(err: E) -> Self

Performs the conversion.

impl<F, G> From<AndThen<MapErr<Receiver<F>, fn(Canceled) -> ResolveError>, G, fn(F) -> G>> for Background<F, G> where
    F: Future,
    G: Future, 

fn from(
    f: AndThen<MapErr<Receiver<F>, fn(_: Canceled) -> ResolveError>, G, fn(_: F) -> G>
) -> Self

Performs the conversion.

impl<F: Debug, G: Debug> Debug for Background<F, G> where
    F: Future,
    G: Future,
    G::Output: Debug, 

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl<F, G> Future for Background<F, G> where
    F: Future + Unpin,
    G: Future + Unpin,
    Either<AndThen<MapErr<Receiver<F>, fn(_: Canceled) -> ResolveError>, G, fn(_: F) -> G>, Ready<G::Output>>: Future<Output = G::Output>, 

type Output = G::Output

The type of value produced on completion.

fn poll(self: Pin<&mut Self>, cx: &mut Context) -> Poll<Self::Output>

Attempt to resolve the future to a final value, registering the current task for wakeup if the value is not yet available.