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Session

tlsn

Struct Session 

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pub struct Session<Io> { /* private fields */ }
Expand description

A TLSNotary session over a communication channel.

Wraps an async IO stream and provides multiplexing for the protocol. Use new_prover or new_verifier to create protocol participants.

The session must be polled continuously (either directly or via split) to drive the underlying connection. After the session closes, the underlying IO can be reclaimed with try_take.

Important: The order in which provers and verifiers are created must match on both sides. For example, if the prover side calls new_prover then new_verifier, the verifier side must call new_verifier then new_prover.

Implementations§

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impl<Io> Session<Io>
where Io: AsyncRead + AsyncWrite + Unpin,

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pub fn new(io: Io) -> Self

Creates a new session.

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pub fn new_prover( &mut self, config: ProverConfig, ) -> Result<Prover<Initialized>>

Creates a new prover.

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pub fn new_verifier( &mut self, config: VerifierConfig, ) -> Result<Verifier<Initialized>>

Creates a new verifier.

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pub fn is_closed(&self) -> bool

Returns true if the session is closed.

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pub fn close(&mut self)

Closes the session.

This will cause the session to begin closing. Session must continue to be polled until completion.

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pub fn try_take(&mut self) -> Result<Io>

Attempts to take the IO, returning an error if it is not available.

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pub fn poll(&mut self, cx: &mut Context<'_>) -> Poll<Result<()>>

Polls the session.

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pub fn split(self) -> (SessionDriver<Io>, SessionHandle)

Splits the session into a driver and handle.

The driver must be polled to make progress. The handle is used for creating provers/verifiers and closing the session.

Trait Implementations§

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impl<Io> Future for Session<Io>
where Io: AsyncRead + AsyncWrite + Unpin,

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type Output = Result<(), Error>

The type of value produced on completion.
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fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output>

Attempts 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§

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impl<Io> !Freeze for Session<Io>

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impl<Io> !RefUnwindSafe for Session<Io>

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impl<Io> Send for Session<Io>
where Io: Send,

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impl<Io> Sync for Session<Io>
where Io: Sync,

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impl<Io> Unpin for Session<Io>
where Io: Unpin,

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impl<Io> !UnwindSafe for Session<Io>

Blanket Implementations§

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

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

Mutably borrows from an owned value. Read more
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impl<T> Conv for T

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fn conv<T>(self) -> T
where Self: Into<T>,

Converts self into T using Into<T>. Read more
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impl<T> FmtForward for T

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fn fmt_binary(self) -> FmtBinary<Self>
where Self: Binary,

Causes self to use its Binary implementation when Debug-formatted.
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fn fmt_display(self) -> FmtDisplay<Self>
where Self: Display,

Causes self to use its Display implementation when Debug-formatted.
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fn fmt_lower_exp(self) -> FmtLowerExp<Self>
where Self: LowerExp,

Causes self to use its LowerExp implementation when Debug-formatted.
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fn fmt_lower_hex(self) -> FmtLowerHex<Self>
where Self: LowerHex,

Causes self to use its LowerHex implementation when Debug-formatted.
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fn fmt_octal(self) -> FmtOctal<Self>
where Self: Octal,

Causes self to use its Octal implementation when Debug-formatted.
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fn fmt_pointer(self) -> FmtPointer<Self>
where Self: Pointer,

Causes self to use its Pointer implementation when Debug-formatted.
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fn fmt_upper_exp(self) -> FmtUpperExp<Self>
where Self: UpperExp,

Causes self to use its UpperExp implementation when Debug-formatted.
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fn fmt_upper_hex(self) -> FmtUpperHex<Self>
where Self: UpperHex,

Causes self to use its UpperHex implementation when Debug-formatted.
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fn fmt_list(self) -> FmtList<Self>
where &'a Self: for<'a> IntoIterator,

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn block_on(self) -> Self::Output
where Self: Sized,

Block the thread until the future is ready. Read more
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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, Self: Sized,

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

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>
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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<B>(self) -> Either<Self, B>
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Wrap this future in an Either future, making it the left-hand variant of that Either. Read more
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where A: Future<Output = Self::Output>, Self: Sized,

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>
where Self: Sized,

Convert this future into a single element stream. Read more
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fn flatten(self) -> Flatten<Self>
where Self::Output: Future, Self: Sized,

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, Self: Sized,

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>
where Self: Sized,

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), Self: Sized,

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: Sized + UnwindSafe,

Catches unwinding panics while polling the future. Read more
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fn shared(self) -> Shared<Self>
where Self: Sized, 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 remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>)
where Self: Sized,

Turn this future into a future that yields () on completion and sends its output to another future on a separate task. Read more
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where Self: Sized + 'a,

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where Self: Sized,

Turns a Future<Output = T> into a TryFuture<Ok = T, Error = ()>.
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fn poll_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output>
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A convenience for calling Future::poll on Unpin future types.
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where Self: Sized,

Similar to [CancellationToken::run_until_cancelled], but with the advantage that it is easier to write fluent call chains. Read more
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where Self: Sized,

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

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where U: From<T>,

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fn into(self) -> U

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

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<F> IntoFuture for F
where F: Future,

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type Output = <F as Future>::Output

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type IntoFuture = F

Which kind of future are we turning this into?
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fn into_future(self) -> <F as IntoFuture>::IntoFuture

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impl<T> Pipe for T
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fn pipe<R>(self, func: impl FnOnce(Self) -> R) -> R
where Self: Sized,

Pipes by value. This is generally the method you want to use. Read more
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fn pipe_ref<'a, R>(&'a self, func: impl FnOnce(&'a Self) -> R) -> R
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const ALIGN: usize

The alignment of pointer.
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type Init = T

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unsafe fn init(init: <T as Pointable>::Init) -> usize

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fn tap(self, func: impl FnOnce(&Self)) -> Self

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impl<T, U> TryFrom<U> for T
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type Error = Infallible

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

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impl<F, T, E> TryFuture for F
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type Ok = T

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type Error = E

The type of failures yielded by this future
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fn try_poll( self: Pin<&mut F>, cx: &mut Context<'_>, ) -> Poll<<F as Future>::Output>

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impl<Fut> TryFutureExt for Fut
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fn flatten_sink<Item>(self) -> FlattenSink<Self, Self::Ok>
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where Self: Sized,

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

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

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

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fn vzip(self) -> V

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

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