Struct quinn::Connecting

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pub struct Connecting { /* private fields */ }

Expand description

In-progress connection attempt future

Implementations

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impl Connecting

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pub fn into_0rtt(self) -> Result<(Connection, ZeroRttAccepted), Self>

Convert into a 0-RTT or 0.5-RTT connection at the cost of weakened security

Opens up the connection for use before the handshake finishes, allowing the API user to send data with 0-RTT encryption if the necessary key material is available. This is useful for reducing start-up latency by beginning transmission of application data without waiting for the handshake’s cryptographic security guarantees to be established.

When the ZeroRttAccepted future completes, the connection has been fully established.

Security

On outgoing connections, this enables transmission of 0-RTT data, which might be vulnerable to replay attacks, and should therefore never invoke non-idempotent operations.

On incoming connections, this enables transmission of 0.5-RTT data, which might be intercepted by a man-in-the-middle. If this occurs, the handshake will not complete successfully.

Errors

Outgoing connections are only 0-RTT-capable when a cryptographic session ticket cached from a previous connection to the same server is available, and includes a 0-RTT key. If no such ticket is found, self is returned unmodified.

For incoming connections, a 0.5-RTT connection will always be successfully constructed.

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pub async fn handshake_data(&mut self) -> Result<Box<dyn Any>, ConnectionError>

Parameters negotiated during the handshake

The dynamic type returned is determined by the configured Session. For the default rustls session, the return value can be downcast to a crypto::rustls::HandshakeData.

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pub fn local_ip(&self) -> Option<IpAddr>

The local IP address which was used when the peer established the connection

This can be different from the address the endpoint is bound to, in case the endpoint is bound to a wildcard address like 0.0.0.0 or ::.

This will return None for clients.

Retrieving the local IP address is currently supported on the following platforms:

Linux

On all non-supported platforms the local IP address will not be available, and the method will return None.

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impl Connecting

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pub fn remote_address(&self) -> SocketAddr

The peer’s UDP address.

Will panic if called after poll has returned Ready.

Trait Implementations

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impl Debug for Connecting

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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 Future for Connecting

type Output = Result<Connection, ConnectionError>

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

Auto Trait Implementations

impl !RefUnwindSafe for Connecting

impl Send for Connecting

impl Sync for Connecting

impl Unpin for Connecting

impl !UnwindSafe for Connecting

Blanket Implementations

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

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

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

impl<F> FutureExt for Fwhere
F: Future + ?Sized,

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

A convenience for calling Future::poll() on !Unpin types.

fn or<F>(self, other: F) -> Or<Self, F>where
Self: Sized,
F: Future<Output = Self::Output>,

Returns the result of self or other future, preferring self if both are ready. Read more

fn race<F>(self, other: F) -> Race<Self, F>where
Self: Sized,
F: Future<Output = Self::Output>,

Returns the result of self or other future, with no preference if both are ready. Read more

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

Catches panics while polling the future. Read more

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

Boxes the future and changes its type to dyn Future + Send + 'a. Read more

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

Boxes the future and changes its type to dyn Future + 'a. 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 Twhere
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<F> IntoFuture for Fwhere
F: Future,

type Output = <F as Future>::Output

The output that the future will produce on completion.

type IntoFuture = F

Which kind of future are we turning this into?

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

Creates a future from a value. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

impl<F, T, E> TryFuture for Fwhere
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>

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

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

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

impl<V, T> VZip<V> for Twhere
V: MultiLane<T>,

fn vzip(self) -> V

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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

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Struct quinn::Connecting

Implementations

impl Connecting

pub fn into_0rtt(self) -> Result<(Connection, ZeroRttAccepted), Self>

pub async fn handshake_data(&mut self) -> Result<Box<dyn Any>, ConnectionError>

pub fn local_ip(&self) -> Option<IpAddr>

impl Connecting

pub fn remote_address(&self) -> SocketAddr

Trait Implementations

impl Debug for Connecting

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

impl Future for Connecting

type Output = Result<Connection, ConnectionError>

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

Auto Trait Implementations

impl !RefUnwindSafe for Connecting

impl Send for Connecting

impl Sync for Connecting

impl Unpin for Connecting

impl !UnwindSafe for Connecting

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

fn from(t: T) -> T

impl<F> FutureExt for Fwhere F: Future + ?Sized,

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

fn or<F>(self, other: F) -> Or<Self, F>where Self: Sized, F: Future<Output = Self::Output>,

fn race<F>(self, other: F) -> Race<Self, F>where Self: Sized, F: Future<Output = Self::Output>,

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

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

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

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 Twhere U: From<T>,

fn into(self) -> U

impl<F> IntoFuture for Fwhere F: Future,

type Output = <F as Future>::Output

type IntoFuture = F

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

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

type Error = Infallible

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

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

type Ok = T

type Error = E

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

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

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

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<V, T> VZip<V> for Twhere V: MultiLane<T>,

fn vzip(self) -> V

impl<T> WithSubscriber for T

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

fn with_current_subscriber(self) -> WithDispatch<Self>

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

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

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

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

impl<F> FutureExt for Fwhere
F: Future + ?Sized,

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

fn or<F>(self, other: F) -> Or<Self, F>where
Self: Sized,
F: Future<Output = Self::Output>,

fn race<F>(self, other: F) -> Race<Self, F>where
Self: Sized,
F: Future<Output = Self::Output>,

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

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

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

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

impl<F> IntoFuture for Fwhere
F: Future,

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

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

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

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

impl<V, T> VZip<V> for Twhere
V: MultiLane<T>,

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

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