Struct hyper::server::conn::Connection[−][src]

pub struct Connection<T, S, E = Exec> where
    S: HttpService<Body>,  { /* fields omitted */ }

Expand description

A future binding a connection with a Service.

Polling this future will drive HTTP forward.

Implementations

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impl<I, B, S, E> Connection<I, S, E> where
 S: HttpService<Body, ResBody = B>,
 S::Error: Into<Box<dyn StdError + Send + Sync>>,
 I: AsyncRead + AsyncWrite + Unpin,
 B: HttpBody + 'static,
 B::Error: Into<Box<dyn StdError + Send + Sync>>,
 E: ConnStreamExec<S::Future, B>,

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pub fn graceful_shutdown(self: Pin<&mut Self>)

Start a graceful shutdown process for this connection.

This Connection should continue to be polled until shutdown can finish.

Note

This should only be called while the Connection future is still pending. If called after Connection::poll has resolved, this does nothing.

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pub fn into_parts(self) -> Parts<I, S>

Return the inner IO object, and additional information.

If the IO object has been “rewound” the io will not contain those bytes rewound. This should only be called after poll_without_shutdown signals that the connection is “done”. Otherwise, it may not have finished flushing all necessary HTTP bytes.

Panics

This method will panic if this connection is using an h2 protocol.

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pub fn try_into_parts(self) -> Option<Parts<I, S>>

Return the inner IO object, and additional information, if available.

This method will return a None if this connection is using an h2 protocol.

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pub fn poll_without_shutdown(
 &mut self,
 cx: &mut Context<'_>
) -> Poll<Result<()>> where
 S: Unpin,
 S::Future: Unpin,
 B: Unpin,

Poll the connection for completion, but without calling shutdown on the underlying IO.

This is useful to allow running a connection while doing an HTTP upgrade. Once the upgrade is completed, the connection would be “done”, but it is not desired to actually shutdown the IO object. Instead you would take it back using into_parts.

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pub fn without_shutdown(self) -> impl Future<Output = Result<Parts<I, S>>> where
 S: Unpin,
 S::Future: Unpin,
 B: Unpin,

Prevent shutdown of the underlying IO object at the end of service the request, instead run into_parts. This is a convenience wrapper over poll_without_shutdown.

Error

This errors if the underlying connection protocol is not HTTP/1.

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pub fn with_upgrades(self) -> UpgradeableConnection<I, S, E> where
I: Send,

Enable this connection to support higher-level HTTP upgrades.

See the upgrade module for more.

Trait Implementations

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impl<I, S> Debug for Connection<I, S> where
S: HttpService<Body>,

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

Formats the value using the given formatter. Read more

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impl<I, B, S, E> Future for Connection<I, S, E> where
 S: HttpService<Body, ResBody = B>,
 S::Error: Into<Box<dyn StdError + Send + Sync>>,
 I: AsyncRead + AsyncWrite + Unpin + 'static,
 B: HttpBody + 'static,
 B::Error: Into<Box<dyn StdError + Send + Sync>>,
 E: ConnStreamExec<S::Future, B>,

type Output = Result<()>

The type of value produced on completion.

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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. Read more

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impl<'pin, T, S, E> Unpin for Connection<T, S, E> where
Origin<'__pin, T, S, E>: Unpin,
S: HttpService<Body>,

Auto Trait Implementations

impl<T, S, E = Exec> !RefUnwindSafe for Connection<T, S, E>

impl<T, S, E> Send for Connection<T, S, E> where
 E: Send,
 S: Send,
 T: Send,
 <<S as HttpService<Body>>::ResBody as Body>::Data: Send,
 <S as HttpService<Body>>::Future: Send,
 <S as HttpService<Body>>::ResBody: Send,

impl<T, S, E> Sync for Connection<T, S, E> where
 E: Sync,
 S: Sync,
 T: Sync,
 <<S as HttpService<Body>>::ResBody as Body>::Data: Send + Sync,
 <S as HttpService<Body>>::Future: Sync,
 <S as HttpService<Body>>::ResBody: Sync,

impl<T, S, E = Exec> !UnwindSafe for Connection<T, S, E>

Blanket Implementations

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impl<T> Any for T where
T: 'static + ?Sized,

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pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T where
T: ?Sized,

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pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T where
T: ?Sized,

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pub fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

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pub fn from(t: T) -> T

Performs the conversion.

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impl<T> FutureExt for T where
T: Future + ?Sized,

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fn map<U, F>(self, f: F) -> Map<Self, F> where
F: FnOnce(Self::Output) -> U,

Map this future’s output to a different type, returning a new future of the resulting type. Read more

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fn map_into(self) -> MapInto<Self, U> where
Self::Output: Into,

Map this future’s output to a different type, returning a new future of the resulting type. Read more

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fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F> where
F: FnOnce(Self::Output) -> Fut,
Fut: Future,

Chain on a computation for when a future finished, passing the result of the future to the provided closure f. Read more

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fn left_future(self) -> Either<Self, B> where
B: Future<Output = Self::Output>,

Wrap this future in an Either future, making it the left-hand variant of that Either. Read more

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fn right_future<A>(self) -> Either<A, Self> where
A: Future<Output = Self::Output>,

Wrap this future in an Either future, making it the right-hand variant of that Either. Read more

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fn into_stream(self) -> IntoStream<Self>

Convert this future into a single element stream. Read more

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fn flatten(self) -> Flatten<Self> where
Self::Output: Future,

Flatten the execution of this future when the output of this future is itself another future. Read more

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fn flatten_stream(self) -> FlattenStream<Self> where
Self::Output: Stream,

Flatten the execution of this future when the successful result of this future is a stream. Read more

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fn fuse(self) -> Fuse<Self>

Fuse a future such that poll will never again be called once it has completed. This method can be used to turn any Future into a FusedFuture. Read more

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fn inspect<F>(self, f: F) -> Inspect<Self, F> where
F: FnOnce(&Self::Output),

Do something with the output of a future before passing it on. Read more

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fn catch_unwind(self) -> CatchUnwind<Self> where
Self: UnwindSafe,

Catches unwinding panics while polling the future. Read more

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fn shared(self) -> Shared<Self> where
Self::Output: Clone,

Create a cloneable handle to this future where all handles will resolve to the same result. Read more

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fn boxed<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + Send + 'a, Global>> where
Self: 'a + Send,

Wrap the future in a Box, pinning it. Read more

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fn boxed_local<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a, Global>> where
Self: 'a,

Wrap the future in a Box, pinning it. Read more

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fn unit_error(self) -> UnitError<Self>

Turns a Future<Output = T> into a TryFuture<Ok = T, Error = ()>. Read more

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fn never_error(self) -> NeverError<Self>

Turns a Future<Output = T> into a TryFuture<Ok = T, Error = Never>. Read more

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fn poll_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output> where
Self: Unpin,

A convenience for calling Future::poll on Unpin future types.

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fn now_or_never(self) -> Option<Self::Output>

Evaluates and consumes the future, returning the resulting output if the future is ready after the first call to Future::poll. Read more

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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impl<T, U> Into for T where
U: From<T>,

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pub fn into(self) -> U

Performs the conversion.

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impl<F> IntoFuture for F where
F: Future,

type Output = <F as Future>::Output

🔬 This is a nightly-only experimental API. (into_future)

The output that the future will produce on completion.

type Future = F

🔬 This is a nightly-only experimental API. (into_future)

Which kind of future are we turning this into?

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pub fn into_future(self) -> <F as IntoFuture>::Future

🔬 This is a nightly-only experimental API. (into_future)

Creates a future from a value.

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impl<T, U> TryFrom for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

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pub fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<F, T, E> TryFuture for F where
F: Future<Output = Result<T, E>> + ?Sized,

type Ok = T

The type of successful values yielded by this future

type Error = E

The type of failures yielded by this future

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pub fn try_poll(
self: Pin<&mut F>,
cx: &mut Context<'_>
) -> Poll<<F as Future>::Output>

Poll this TryFuture as if it were a Future. Read more

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impl<Fut> TryFutureExt for Fut where
Fut: TryFuture + ?Sized,

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fn map_ok<T, F>(self, f: F) -> MapOk<Self, F> where
F: FnOnce(Self::Ok) -> T,

Maps this future’s success value to a different value. Read more

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fn map_ok_or_else<T, E, F>(self, e: E, f: F) -> MapOkOrElse<Self, F, E> where
F: FnOnce(Self::Ok) -> T,
E: FnOnce(Self::Error) -> T,

Maps this future’s success value to a different value, and permits for error handling resulting in the same type. Read more

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

Maps this future’s error value to a different value. Read more

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fn err_into<E>(self) -> ErrInto<Self, E> where
Self::Error: Into<E>,

Maps this future’s Error to a new error type using the Into trait. Read more

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fn ok_into(self) -> OkInto<Self, U> where
Self::Ok: Into,

Maps this future’s Ok to a new type using the Into trait. Read more

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fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F> where
F: FnOnce(Self::Ok) -> Fut,
Fut: TryFuture<Error = Self::Error>,

Executes another future after this one resolves successfully. The success value is passed to a closure to create this subsequent future. Read more

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fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F> where
F: FnOnce(Self::Error) -> Fut,
Fut: TryFuture<Ok = Self::Ok>,

Executes another future if this one resolves to an error. The error value is passed to a closure to create this subsequent future. Read more

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fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F> where
F: FnOnce(&Self::Ok),

Do something with the success value of a future before passing it on. Read more

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fn inspect_err<F>(self, f: F) -> InspectErr<Self, F> where
F: FnOnce(&Self::Error),

Do something with the error value of a future before passing it on. Read more

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fn try_flatten(self) -> TryFlatten<Self, Self::Ok> where
Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error,

Flatten the execution of this future when the successful result of this future is another future. Read more

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fn try_flatten_stream(self) -> TryFlattenStream<Self> where
Self::Ok: TryStream,
<Self::Ok as TryStream>::Error == Self::Error,

Flatten the execution of this future when the successful result of this future is a stream. Read more

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fn unwrap_or_else<F>(self, f: F) -> UnwrapOrElse<Self, F> where
F: FnOnce(Self::Error) -> Self::Ok,

Unwraps this future’s output, producing a future with this future’s Ok type as its Output type. Read more

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fn into_future(self) -> IntoFuture<Self>

Wraps a TryFuture into a type that implements Future. Read more

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fn try_poll_unpin(
 &mut self,
 cx: &mut Context<'_>
) -> Poll<Result<Self::Ok, Self::Error>> where
 Self: Unpin,

A convenience method for calling TryFuture::try_poll on Unpin future types. Read more

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

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pub fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

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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

Struct hyper::server::conn::Connection[−][src]

Implementations

impl<I, B, S, E> Connection<I, S, E> where S: HttpService<Body, ResBody = B>, S::Error: Into<Box<dyn StdError + Send + Sync>>, I: AsyncRead + AsyncWrite + Unpin, B: HttpBody + 'static, B::Error: Into<Box<dyn StdError + Send + Sync>>, E: ConnStreamExec<S::Future, B>,

pub fn graceful_shutdown(self: Pin<&mut Self>)

Note

pub fn into_parts(self) -> Parts<I, S>

Panics

pub fn try_into_parts(self) -> Option<Parts<I, S>>

pub fn poll_without_shutdown( &mut self, cx: &mut Context<'_>) -> Poll<Result<()>> where S: Unpin, S::Future: Unpin, B: Unpin,

pub fn without_shutdown(self) -> impl Future<Output = Result<Parts<I, S>>> where S: Unpin, S::Future: Unpin, B: Unpin,

Error

pub fn with_upgrades(self) -> UpgradeableConnection<I, S, E> where I: Send,

Trait Implementations

impl<I, S> Debug for Connection<I, S> where S: HttpService<Body>,

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

impl<I, B, S, E> Future for Connection<I, S, E> where S: HttpService<Body, ResBody = B>, S::Error: Into<Box<dyn StdError + Send + Sync>>, I: AsyncRead + AsyncWrite + Unpin + 'static, B: HttpBody + 'static, B::Error: Into<Box<dyn StdError + Send + Sync>>, E: ConnStreamExec<S::Future, B>,

type Output = Result<()>

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

impl<'__pin, T, S, E> Unpin for Connection<T, S, E> where __Origin<'__pin, T, S, E>: Unpin, S: HttpService<Body>,

Auto Trait Implementations

impl<T, S, E = Exec> !RefUnwindSafe for Connection<T, S, E>

impl<T, S, E> Send for Connection<T, S, E> where E: Send, S: Send, T: Send, <<S as HttpService<Body>>::ResBody as Body>::Data: Send, <S as HttpService<Body>>::Future: Send, <S as HttpService<Body>>::ResBody: Send,

impl<T, S, E> Sync for Connection<T, S, E> where E: Sync, S: Sync, T: Sync, <<S as HttpService<Body>>::ResBody as Body>::Data: Send + Sync, <S as HttpService<Body>>::Future: Sync, <S as HttpService<Body>>::ResBody: Sync,

impl<T, S, E = Exec> !UnwindSafe for Connection<T, S, E>

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized,

pub fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

pub fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

pub fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

pub fn from(t: T) -> T

impl<T> FutureExt for T where T: Future + ?Sized,

fn map<U, F>(self, f: F) -> Map<Self, F> where F: FnOnce(Self::Output) -> U,

fn map_into<U>(self) -> MapInto<Self, U> where Self::Output: Into<U>,

fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F> where F: FnOnce(Self::Output) -> Fut, Fut: Future,

fn left_future<B>(self) -> Either<Self, B> where B: Future<Output = Self::Output>,

fn right_future<A>(self) -> Either<A, Self> where A: Future<Output = Self::Output>,

fn into_stream(self) -> IntoStream<Self>

fn flatten(self) -> Flatten<Self> where Self::Output: Future,

fn flatten_stream(self) -> FlattenStream<Self> where Self::Output: Stream,

fn fuse(self) -> Fuse<Self>

fn inspect<F>(self, f: F) -> Inspect<Self, F> where F: FnOnce(&Self::Output),

fn catch_unwind(self) -> CatchUnwind<Self> where Self: UnwindSafe,

fn shared(self) -> Shared<Self> where Self::Output: Clone,

fn boxed<'a>( self) -> Pin<Box<dyn Future<Output = Self::Output> + Send + 'a, Global>> where Self: 'a + Send,

fn boxed_local<'a>( self) -> Pin<Box<dyn Future<Output = Self::Output> + 'a, Global>> where Self: 'a,

fn unit_error(self) -> UnitError<Self>

fn never_error(self) -> NeverError<Self>

fn poll_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output> where Self: Unpin,

fn now_or_never(self) -> Option<Self::Output>

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>

fn in_current_span(self) -> Instrumented<Self>

impl<T, U> Into<U> for T where U: From<T>,

pub fn into(self) -> U

impl<F> IntoFuture for F where F: Future,

type Output = <F as Future>::Output

type Future = F

pub fn into_future(self) -> <F as IntoFuture>::Future

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<F, T, E> TryFuture for F where F: Future<Output = Result<T, E>> + ?Sized,

type Ok = T

type Error = E

pub fn try_poll( self: Pin<&mut F>, cx: &mut Context<'_>) -> Poll<<F as Future>::Output>

impl<Fut> TryFutureExt for Fut where Fut: TryFuture + ?Sized,

fn map_ok<T, F>(self, f: F) -> MapOk<Self, F> where F: FnOnce(Self::Ok) -> T,

fn map_ok_or_else<T, E, F>(self, e: E, f: F) -> MapOkOrElse<Self, F, E> where F: FnOnce(Self::Ok) -> T, E: FnOnce(Self::Error) -> T,

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

fn err_into<E>(self) -> ErrInto<Self, E> where Self::Error: Into<E>,

fn ok_into<U>(self) -> OkInto<Self, U> where Self::Ok: Into<U>,

fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F> where F: FnOnce(Self::Ok) -> Fut, Fut: TryFuture<Error = Self::Error>,

fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F> where F: FnOnce(Self::Error) -> Fut, Fut: TryFuture<Ok = Self::Ok>,

fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F> where F: FnOnce(&Self::Ok),

fn inspect_err<F>(self, f: F) -> InspectErr<Self, F> where F: FnOnce(&Self::Error),

fn try_flatten(self) -> TryFlatten<Self, Self::Ok> where Self::Ok: TryFuture, <Self::Ok as TryFuture>::Error == Self::Error,

fn try_flatten_stream(self) -> TryFlattenStream<Self> where Self::Ok: TryStream, <Self::Ok as TryStream>::Error == Self::Error,

impl<I, B, S, E> Connection<I, S, E> where
S: HttpService<Body, ResBody = B>,
S::Error: Into<Box<dyn StdError + Send + Sync>>,
I: AsyncRead + AsyncWrite + Unpin,
B: HttpBody + 'static,
B::Error: Into<Box<dyn StdError + Send + Sync>>,
E: ConnStreamExec<S::Future, B>,

pub fn poll_without_shutdown(
&mut self,
cx: &mut Context<'_>
) -> Poll<Result<()>> where
S: Unpin,
S::Future: Unpin,
B: Unpin,

pub fn without_shutdown(self) -> impl Future<Output = Result<Parts<I, S>>> where
S: Unpin,
S::Future: Unpin,
B: Unpin,

pub fn with_upgrades(self) -> UpgradeableConnection<I, S, E> where
I: Send,

impl<I, S> Debug for Connection<I, S> where
S: HttpService<Body>,

impl<I, B, S, E> Future for Connection<I, S, E> where
S: HttpService<Body, ResBody = B>,
S::Error: Into<Box<dyn StdError + Send + Sync>>,
I: AsyncRead + AsyncWrite + Unpin + 'static,
B: HttpBody + 'static,
B::Error: Into<Box<dyn StdError + Send + Sync>>,
E: ConnStreamExec<S::Future, B>,

impl<'pin, T, S, E> Unpin for Connection<T, S, E> where
Origin<'__pin, T, S, E>: Unpin,
S: HttpService<Body>,

impl<T, S, E> Send for Connection<T, S, E> where
E: Send,
S: Send,
T: Send,
<<S as HttpService<Body>>::ResBody as Body>::Data: Send,
<S as HttpService<Body>>::Future: Send,
<S as HttpService<Body>>::ResBody: Send,

impl<T, S, E> Sync for Connection<T, S, E> where
E: Sync,
S: Sync,
T: Sync,
<<S as HttpService<Body>>::ResBody as Body>::Data: Send + Sync,
<S as HttpService<Body>>::Future: Sync,
<S as HttpService<Body>>::ResBody: Sync,

impl<T> Any for T where
T: 'static + ?Sized,

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<T> FutureExt for T where
T: Future + ?Sized,

fn map<U, F>(self, f: F) -> Map<Self, F> where
F: FnOnce(Self::Output) -> U,

fn map_into<U>(self) -> MapInto<Self, U> where
Self::Output: Into<U>,

fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F> where
F: FnOnce(Self::Output) -> Fut,
Fut: Future,

fn left_future<B>(self) -> Either<Self, B> where
B: Future<Output = Self::Output>,

fn right_future<A>(self) -> Either<A, Self> where
A: Future<Output = Self::Output>,

fn flatten(self) -> Flatten<Self> where
Self::Output: Future,

fn flatten_stream(self) -> FlattenStream<Self> where
Self::Output: Stream,

fn inspect<F>(self, f: F) -> Inspect<Self, F> where
F: FnOnce(&Self::Output),

fn catch_unwind(self) -> CatchUnwind<Self> where
Self: UnwindSafe,

fn shared(self) -> Shared<Self> where
Self::Output: Clone,

fn boxed<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + Send + 'a, Global>> where
Self: 'a + Send,

fn boxed_local<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a, Global>> where
Self: 'a,

fn poll_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output> where
Self: Unpin,

impl<T, U> Into<U> for T where
U: From<T>,

impl<F> IntoFuture for F where
F: Future,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<F, T, E> TryFuture for F where
F: Future<Output = Result<T, E>> + ?Sized,

pub fn try_poll(
self: Pin<&mut F>,
cx: &mut Context<'_>
) -> Poll<<F as Future>::Output>

impl<Fut> TryFutureExt for Fut where
Fut: TryFuture + ?Sized,

fn map_ok<T, F>(self, f: F) -> MapOk<Self, F> where
F: FnOnce(Self::Ok) -> T,

fn map_ok_or_else<T, E, F>(self, e: E, f: F) -> MapOkOrElse<Self, F, E> where
F: FnOnce(Self::Ok) -> T,
E: FnOnce(Self::Error) -> T,

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

fn err_into<E>(self) -> ErrInto<Self, E> where
Self::Error: Into<E>,

fn ok_into<U>(self) -> OkInto<Self, U> where
Self::Ok: Into<U>,

fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F> where
F: FnOnce(Self::Ok) -> Fut,
Fut: TryFuture<Error = Self::Error>,

fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F> where
F: FnOnce(Self::Error) -> Fut,
Fut: TryFuture<Ok = Self::Ok>,

fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F> where
F: FnOnce(&Self::Ok),

fn inspect_err<F>(self, f: F) -> InspectErr<Self, F> where
F: FnOnce(&Self::Error),

fn try_flatten(self) -> TryFlatten<Self, Self::Ok> where
Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error,

fn try_flatten_stream(self) -> TryFlattenStream<Self> where
Self::Ok: TryStream,
<Self::Ok as TryStream>::Error == Self::Error,

fn unwrap_or_else<F>(self, f: F) -> UnwrapOrElse<Self, F> where
F: FnOnce(Self::Error) -> Self::Ok,

fn try_poll_unpin(
&mut self,
cx: &mut Context<'_>
) -> Poll<Result<Self::Ok, Self::Error>> where
Self: Unpin,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,