Struct netdb::hosts::HostByAddr
[−]
[src]
pub struct HostByAddr(_);
The future returned by poll_host_by_addr()
.
Resolves into a HostEnt
value if the lookup is successful or None
if
there is no such address.
Methods
impl HostByAddr
[src]
Trait Implementations
impl Future for HostByAddr
[src]
type Item = Option<HostEnt>
The type of value that this future will resolved with if it is successful. Read more
type Error = Error
The type of error that this future will resolve with if it fails in a normal fashion. Read more
fn poll(&mut self) -> Poll<Self::Item, Self::Error>
Query this future to see if its value has become available, registering interest if it is not. Read more
fn wait(self) -> Result<Self::Item, Self::Error>
Block the current thread until this future is resolved. Read more
fn boxed(
self
) -> Box<Future<Error = Self::Error, Item = Self::Item> + 'static + Send> where
Self: Send + 'static,
self
) -> Box<Future<Error = Self::Error, Item = Self::Item> + 'static + Send> where
Self: Send + 'static,
Convenience function for turning this future into a trait object which is also Send
. Read more
fn map<F, U>(self, f: F) -> Map<Self, F> where
F: FnOnce(Self::Item) -> U,
F: FnOnce(Self::Item) -> U,
Map this future's result to a different type, returning a new future of the resulting type. Read more
fn map_err<F, E>(self, f: F) -> MapErr<Self, F> where
F: FnOnce(Self::Error) -> E,
F: FnOnce(Self::Error) -> E,
Map this future's error to a different error, returning a new future. Read more
fn from_err<E>(self) -> FromErr<Self, E> where
E: From<Self::Error>,
E: From<Self::Error>,
Map this future's error to any error implementing From
for this future's Error
, returning a new future. Read more
fn then<F, B>(self, f: F) -> Then<Self, B, F> where
B: IntoFuture,
F: FnOnce(Result<Self::Item, Self::Error>) -> B,
B: IntoFuture,
F: FnOnce(Result<Self::Item, Self::Error>) -> B,
Chain on a computation for when a future finished, passing the result of the future to the provided closure f
. Read more
fn and_then<F, B>(self, f: F) -> AndThen<Self, B, F> where
B: IntoFuture<Error = Self::Error>,
F: FnOnce(Self::Item) -> B,
B: IntoFuture<Error = Self::Error>,
F: FnOnce(Self::Item) -> B,
Execute another future after this one has resolved successfully. Read more
fn or_else<F, B>(self, f: F) -> OrElse<Self, B, F> where
B: IntoFuture<Item = Self::Item>,
F: FnOnce(Self::Error) -> B,
B: IntoFuture<Item = Self::Item>,
F: FnOnce(Self::Error) -> B,
Execute another future if this one resolves with an error. Read more
fn select<B>(self, other: B) -> Select<Self, <B as IntoFuture>::Future> where
B: IntoFuture<Item = Self::Item, Error = Self::Error>,
B: IntoFuture<Item = Self::Item, Error = Self::Error>,
Waits for either one of two futures to complete. Read more
fn select2<B>(self, other: B) -> Select2<Self, <B as IntoFuture>::Future> where
B: IntoFuture,
B: IntoFuture,
Waits for either one of two differently-typed futures to complete. Read more
fn join<B>(self, other: B) -> Join<Self, <B as IntoFuture>::Future> where
B: IntoFuture<Error = Self::Error>,
B: IntoFuture<Error = Self::Error>,
Joins the result of two futures, waiting for them both to complete. Read more
fn join3<B, C>(
self,
b: B,
c: C
) -> Join3<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future> where
B: IntoFuture<Error = Self::Error>,
C: IntoFuture<Error = Self::Error>,
self,
b: B,
c: C
) -> Join3<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future> where
B: IntoFuture<Error = Self::Error>,
C: IntoFuture<Error = Self::Error>,
Same as join
, but with more futures.
fn join4<B, C, D>(
self,
b: B,
c: C,
d: D
) -> Join4<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future, <D as IntoFuture>::Future> where
B: IntoFuture<Error = Self::Error>,
C: IntoFuture<Error = Self::Error>,
D: IntoFuture<Error = Self::Error>,
self,
b: B,
c: C,
d: D
) -> Join4<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future, <D as IntoFuture>::Future> where
B: IntoFuture<Error = Self::Error>,
C: IntoFuture<Error = Self::Error>,
D: IntoFuture<Error = Self::Error>,
Same as join
, but with more futures.
fn join5<B, C, D, E>(
self,
b: B,
c: C,
d: D,
e: E
) -> Join5<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future, <D as IntoFuture>::Future, <E as IntoFuture>::Future> where
B: IntoFuture<Error = Self::Error>,
C: IntoFuture<Error = Self::Error>,
D: IntoFuture<Error = Self::Error>,
E: IntoFuture<Error = Self::Error>,
self,
b: B,
c: C,
d: D,
e: E
) -> Join5<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future, <D as IntoFuture>::Future, <E as IntoFuture>::Future> where
B: IntoFuture<Error = Self::Error>,
C: IntoFuture<Error = Self::Error>,
D: IntoFuture<Error = Self::Error>,
E: IntoFuture<Error = Self::Error>,
Same as join
, but with more futures.
fn into_stream(self) -> IntoStream<Self>
Convert this future into a single element stream. Read more
fn flatten(self) -> Flatten<Self> where
Self::Item: IntoFuture,
<Self::Item as IntoFuture>::Error: From<Self::Error>,
Self::Item: IntoFuture,
<Self::Item as IntoFuture>::Error: From<Self::Error>,
Flatten the execution of this future when the successful result of this future is itself another future. Read more
fn flatten_stream(self) -> FlattenStream<Self> where
Self::Item: Stream,
<Self::Item as Stream>::Error == Self::Error,
Self::Item: Stream,
<Self::Item as Stream>::Error == Self::Error,
Flatten the execution of this future when the successful result of this future is a stream. Read more
fn fuse(self) -> Fuse<Self>
Fuse a future such that poll
will never again be called once it has completed. Read more
fn catch_unwind(self) -> CatchUnwind<Self> where
Self: UnwindSafe,
Self: UnwindSafe,
Catches unwinding panics while polling the future. Read more
Create a cloneable handle to this future where all handles will resolve to the same result. Read more