[−][src]Struct h2::client::Connection
Manages all state associated with an HTTP/2.0 client connection.
A Connection
is backed by an I/O resource (usually a TCP socket) and
implements the HTTP/2.0 client logic for that connection. It is responsible
for driving the internal state forward, performing the work requested of the
associated handles (SendRequest
, ResponseFuture
, SendStream
,
RecvStream
).
Connection
values are created by calling handshake
. Once a
Connection
value is obtained, the caller must repeatedly call poll
until Ready
is returned. The easiest way to do this is to submit the
Connection
instance to an executor.
Examples
let (send_request, connection) = client::handshake(my_io).await?; // Submit the connection handle to an executor. tokio::spawn(async { connection.await.expect("connection failed"); }); // Now, use `send_request` to initialize HTTP/2.0 streams. // ...
Methods
impl<T, B> Connection<T, B> where
T: AsyncRead + AsyncWrite + Unpin,
B: IntoBuf + Unpin,
B::Buf: Unpin,
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T: AsyncRead + AsyncWrite + Unpin,
B: IntoBuf + Unpin,
B::Buf: Unpin,
pub fn set_target_window_size(&mut self, size: u32)
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Sets the target window size for the whole connection.
If size
is greater than the current value, then a WINDOW_UPDATE
frame will be immediately sent to the remote, increasing the connection
level window by size - current_value
.
If size
is less than the current value, nothing will happen
immediately. However, as window capacity is released by
ReleaseCapacity
instances, no WINDOW_UPDATE
frames will be sent
out until the number of "in flight" bytes drops below size
.
The default value is 65,535.
See ReleaseCapacity
documentation for more details.
pub fn ping_pong(&mut self) -> Option<PingPong>
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Takes a PingPong
instance from the connection.
Note
This may only be called once. Calling multiple times will return None
.
Trait Implementations
impl<T, B> Debug for Connection<T, B> where
T: AsyncRead + AsyncWrite,
T: Debug,
B: Debug + IntoBuf,
B::Buf: Debug,
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T: AsyncRead + AsyncWrite,
T: Debug,
B: Debug + IntoBuf,
B::Buf: Debug,
impl<T, B> Future for Connection<T, B> where
T: AsyncRead + AsyncWrite + Unpin,
B: IntoBuf + Unpin,
B::Buf: Unpin,
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T: AsyncRead + AsyncWrite + Unpin,
B: IntoBuf + Unpin,
B::Buf: Unpin,
Auto Trait Implementations
impl<T, B> Sync for Connection<T, B> where
T: Sync,
<B as IntoBuf>::Buf: Send + Sync,
T: Sync,
<B as IntoBuf>::Buf: Send + Sync,
impl<T, B> Send for Connection<T, B> where
T: Send,
<B as IntoBuf>::Buf: Send,
T: Send,
<B as IntoBuf>::Buf: Send,
impl<T, B> Unpin for Connection<T, B> where
T: Unpin,
<B as IntoBuf>::Buf: Unpin,
T: Unpin,
<B as IntoBuf>::Buf: Unpin,
impl<T, B = Bytes> !RefUnwindSafe for Connection<T, B>
impl<T, B = Bytes> !UnwindSafe for Connection<T, B>
Blanket Implementations
impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> From<T> for T
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<F, T, E> TryFuture for F where
F: Future<Output = Result<T, E>> + ?Sized,
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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
fn try_poll(self: Pin<&mut F>, cx: &mut Context) -> Poll<<F as Future>::Output>
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impl<T> FutureExt for T where
T: Future + ?Sized,
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T: Future + ?Sized,
fn map<U, F>(self, f: F) -> Map<Self, F> where
F: FnOnce(Self::Output) -> U,
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F: FnOnce(Self::Output) -> U,
fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F> where
F: FnOnce(Self::Output) -> Fut,
Fut: Future,
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F: FnOnce(Self::Output) -> Fut,
Fut: Future,
fn left_future<B>(self) -> Either<Self, B> where
B: Future<Output = Self::Output>,
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B: Future<Output = Self::Output>,
fn right_future<A>(self) -> Either<A, Self> where
A: Future<Output = Self::Output>,
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A: Future<Output = Self::Output>,
fn into_stream(self) -> IntoStream<Self>
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fn flatten(self) -> Flatten<Self> where
Self::Output: Future,
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Self::Output: Future,
fn flatten_stream(self) -> FlattenStream<Self> where
Self::Output: Stream,
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Self::Output: Stream,
fn fuse(self) -> Fuse<Self>
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fn inspect<F>(self, f: F) -> Inspect<Self, F> where
F: FnOnce(&Self::Output),
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F: FnOnce(&Self::Output),
fn catch_unwind(self) -> CatchUnwind<Self> where
Self: UnwindSafe,
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Self: UnwindSafe,
fn shared(self) -> Shared<Self> where
Self::Output: Clone,
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Self::Output: Clone,
fn boxed<'a>(self) -> Pin<Box<dyn Future<Output = Self::Output> + 'a + Send>> where
Self: Send + 'a,
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Self: Send + 'a,
fn boxed_local<'a>(self) -> Pin<Box<dyn Future<Output = Self::Output> + 'a>> where
Self: 'a,
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Self: 'a,
fn unit_error(self) -> UnitError<Self>
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fn never_error(self) -> NeverError<Self>
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fn poll_unpin(&mut self, cx: &mut Context) -> Poll<Self::Output> where
Self: Unpin,
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Self: Unpin,
fn now_or_never(self) -> Option<Self::Output>
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impl<Fut> TryFutureExt for Fut where
Fut: TryFuture + ?Sized,
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Fut: TryFuture + ?Sized,
fn map_ok<T, F>(self, f: F) -> MapOk<Self, F> where
F: FnOnce(Self::Ok) -> T,
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F: FnOnce(Self::Ok) -> T,
fn map_err<E, F>(self, f: F) -> MapErr<Self, F> where
F: FnOnce(Self::Error) -> E,
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F: FnOnce(Self::Error) -> E,
fn err_into<E>(self) -> ErrInto<Self, E> where
Self::Error: Into<E>,
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Self::Error: Into<E>,
fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F> where
F: FnOnce(Self::Ok) -> Fut,
Fut: TryFuture<Error = Self::Error>,
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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>,
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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),
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F: FnOnce(&Self::Ok),
fn inspect_err<F>(self, f: F) -> InspectErr<Self, F> where
F: FnOnce(&Self::Error),
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F: FnOnce(&Self::Error),
fn try_flatten_stream(self) -> TryFlattenStream<Self> where
Self::Ok: TryStream,
<Self::Ok as TryStream>::Error == Self::Error,
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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,
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F: FnOnce(Self::Error) -> Self::Ok,
fn into_future(self) -> IntoFuture<Self>
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fn try_poll_unpin(
&mut self,
cx: &mut Context
) -> Poll<Result<Self::Ok, Self::Error>> where
Self: Unpin,
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&mut self,
cx: &mut Context
) -> Poll<Result<Self::Ok, Self::Error>> where
Self: Unpin,