# Struct hyper::client::conn::Connection [−] [src]

    #[must_use = "futures do nothing unless polled"]pub struct Connection<T, B> where
        T: AsyncRead + AsyncWrite + Send + 'static,
        B: HttpBody + 'static,  { /* fields omitted */ }

A future that processes all HTTP state for the IO object.

In most cases, this should just be spawned into an executor, so that it can process incoming and outgoing messages, notice hangups, and the like.

## Implementations

### `impl<T, B> Connection<T, B> where
T: AsyncRead + AsyncWrite + Unpin + Send + 'static,
B: HttpBody + Unpin + Send + 'static,
B::Data: Send,
B::Error: Into<Box<dyn StdError + Send + Sync>>,` [src]

#### `pub fn into_parts(self) -> Parts<T>` [src]

Return the inner IO object, and additional information.

Only works for HTTP/1 connections. HTTP/2 connections will panic.

#### `pub fn poll_without_shutdown(
&mut self,
cx: &mut Context<'_>
) -> Poll<Result<()>>` [src]

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`.

Use `poll_fn` and `try_ready!` to work with this function; or use the `without_shutdown` wrapper.

#### `pub fn without_shutdown(self) -> impl Future<Output = Result<Parts<T>>>` [src]

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`.

## Trait Implementations

### `impl<T, B> Debug for Connection<T, B> where
T: AsyncRead + AsyncWrite + Debug + Send + 'static,
B: HttpBody + 'static,` [src]

#### `fn fmt(&self, f: &mut Formatter<'_>) -> Result` [src]

Formats the value using the given formatter. Read more

### `impl<T, B> Future for Connection<T, B> where
T: AsyncRead + AsyncWrite + Unpin + Send + 'static,
B: HttpBody + Send + 'static,
B::Data: Send,
B::Error: Into<Box<dyn StdError + Send + Sync>>,` [src]

#### `type Output = Result<()>`

The type of value produced on completion.

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

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

## Auto Trait Implementations

### `impl<T, B> !RefUnwindSafe for Connection<T, B>`

### `impl<T, B> Send for Connection<T, B> where
B: Send,
<B as Body>::Data: Send,`

### `impl<T, B> Sync for Connection<T, B> where
B: Send + Sync,
T: Sync,
<B as Body>::Data: Send + Sync,`

### `impl<T, B> Unpin for Connection<T, B> where
T: Unpin,`

### `impl<T, B> !UnwindSafe for Connection<T, B>`

## Blanket Implementations

### `impl<T> Any for T where
T: 'static + ?Sized,` [src]

#### `pub fn type_id(&self) -> TypeId` [src]

Gets the `TypeId` of `self`. Read more

### `impl<T> Borrow<T> for T where
T: ?Sized,` [src]

#### `pub fn borrow(&self) -> &T` [src]

Immutably borrows from an owned value. Read more

### `impl<T> BorrowMut<T> for T where
T: ?Sized,` [src]

#### `pub fn borrow_mut(&mut self) -> &mut T` [src]

Mutably borrows from an owned value. Read more

### `impl<T> From<T> for T` [src]

#### `pub fn from(t: T) -> T` [src]

Performs the conversion.

### `impl<T> FutureExt for T where
T: Future + ?Sized,` [src]

#### `pub fn map<U, F>(self, f: F) -> Map<Self, F> where
F: FnOnce(Self::Output) -> U,` [src]

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

#### `pub fn map_into<U>(self) -> MapInto<Self, U> where
Self::Output: Into<U>,` [src]

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

#### `pub fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F> where
F: FnOnce(Self::Output) -> Fut,
Fut: Future,` [src]

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

#### `pub fn left_future<B>(self) -> Either<Self, B> where
B: Future<Output = Self::Output>,` [src]

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

#### `pub fn right_future<A>(self) -> Either<A, Self> where
A: Future<Output = Self::Output>,` [src]

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

#### `pub fn into_stream(self) -> IntoStream<Self>` [src]

Convert this future into a single element stream. Read more

#### `pub fn flatten(self) -> Flatten<Self> where
Self::Output: Future,` [src]

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

#### `pub fn flatten_stream(self) -> FlattenStream<Self> where
Self::Output: Stream,` [src]

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

#### `pub fn fuse(self) -> Fuse<Self>` [src]

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

#### `pub fn inspect<F>(self, f: F) -> Inspect<Self, F> where
F: FnOnce(&Self::Output),` [src]

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

#### `pub fn unit_error(self) -> UnitError<Self>` [src]

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

#### `pub fn never_error(self) -> NeverError<Self>` [src]

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

#### `pub fn poll_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output> where
Self: Unpin,` [src]

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

#### `pub fn now_or_never(self) -> Option<Self::Output>` [src]

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

### `impl<T> Instrument for T` [src]

#### `pub fn instrument(self, span: Span) -> Instrumented<Self>` [src]

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

#### `pub fn in_current_span(self) -> Instrumented<Self>` [src]

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

### `impl<T, U> Into<U> for T where
U: From<T>,` [src]

#### `pub fn into(self) -> U` [src]

Performs the conversion.

### `impl<F> IntoFuture for F where
F: Future,` [src]

#### `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?

#### `pub fn into_future(self) -> <F as IntoFuture>::Future` [src]

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

Creates a future from a value.

### `impl<T, U> TryFrom<U> for T where
U: Into<T>,` [src]

#### `type Error = Infallible`

The type returned in the event of a conversion error.

#### `pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>` [src]

Performs the conversion.

### `impl<F, T, E> TryFuture for F where
F: Future<Output = Result<T, E>> + ?Sized,` [src]

#### `type Ok = T`

The type of successful values yielded by this future

#### `type Error = E`

The type of failures yielded by this future

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

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

### `impl<Fut> TryFutureExt for Fut where
Fut: TryFuture + ?Sized,` [src]

#### `pub fn map_ok<T, F>(self, f: F) -> MapOk<Self, F> where
F: FnOnce(Self::Ok) -> T,` [src]

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

#### `pub 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,` [src]

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

#### `pub fn map_err<E, F>(self, f: F) -> MapErr<Self, F> where
F: FnOnce(Self::Error) -> E,` [src]

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

#### `pub fn err_into<E>(self) -> ErrInto<Self, E> where
Self::Error: Into<E>,` [src]

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

#### `pub fn ok_into<U>(self) -> OkInto<Self, U> where
Self::Ok: Into<U>,` [src]

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

#### `pub fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F> where
F: FnOnce(Self::Ok) -> Fut,
Fut: TryFuture<Error = Self::Error>,` [src]

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

#### `pub fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F> where
F: FnOnce(Self::Error) -> Fut,
Fut: TryFuture<Ok = Self::Ok>,` [src]

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

#### `pub fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F> where
F: FnOnce(&Self::Ok),` [src]

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

#### `pub fn inspect_err<F>(self, f: F) -> InspectErr<Self, F> where
F: FnOnce(&Self::Error),` [src]

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

#### `pub fn try_flatten(self) -> TryFlatten<Self, Self::Ok> where
Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error,` [src]

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

#### `pub fn try_flatten_stream(self) -> TryFlattenStream<Self> where
Self::Ok: TryStream,
<Self::Ok as TryStream>::Error == Self::Error,` [src]

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

#### `pub fn unwrap_or_else<F>(self, f: F) -> UnwrapOrElse<Self, F> where
F: FnOnce(Self::Error) -> Self::Ok,` [src]

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

#### `pub fn into_future(self) -> IntoFuture<Self>` [src]

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

#### `pub fn try_poll_unpin(
&mut self,
cx: &mut Context<'_>
) -> Poll<Result<Self::Ok, Self::Error>> where
Self: Unpin,` [src]

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

### `impl<T, U> TryInto<U> for T where
U: TryFrom<T>,` [src]

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

The type returned in the event of a conversion error.

#### `pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>` [src]

Performs the conversion.