# [−]Struct actix_web::actix::actix::dev::Request

    #[must_use = "You have to wait on request otherwise Message wont be delivered"]
    pub struct Request<A, M> where
        A: Handler<M>,
        M: Message,
        <A as Actor>::Context: ToEnvelope<A, M>,  { /* fields omitted */ }

`Request` is a `Future` which represents asynchronous message sending process.

## Methods

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`impl<A, M> Request<A, M> where A: Handler<M>, M: Message, <A as Actor>::Context: ToEnvelope<A, M>,`

####

`pub fn timeout(self, dur: Duration) -> Request<A, M>` |

Set message delivery timeout

## Trait Implementations

###

`impl<A, M> Future for Request<A, M> where A: Handler<M>, M: Message + Send, <A as Actor>::Context: ToEnvelope<A, M>, <M as Message>::Result: Send,`

#### `type Item = <M as Message>::Result`

The type of value that this future will resolved with if it is successful. Read more

#### `type Error = MailboxError`

The type of error that this future will resolve with if it fails in a normal fashion. Read more

####

`fn poll( &mut self ) -> Result<Async<<Request<A, M> as Future>::Item>, <Request<A, M> as Future>::Error>` |

Query this future to see if its value has become available, registering interest if it is not. Read more

####

`fn wait(self) -> Result<Self::Item, Self::Error>`

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Block the current thread until this future is resolved. Read more

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

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

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

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Map this future's error to a different error, returning a new future. Read more

####

`fn from_err<E>(self) -> FromErr<Self, E> where E: From<Self::Error>,`

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Map this future's error to any error implementing `From` for this future's `Error`, returning a new future. Read more

####

`fn then<F, B>(self, f: F) -> Then<Self, B, F> where B: IntoFuture, F: FnOnce(Result<Self::Item, Self::Error>) -> B,`

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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

####

`fn and_then<F, B>(self, f: F) -> AndThen<Self, B, F> where B: IntoFuture<Error = Self::Error>, F: FnOnce(Self::Item) -> B,`

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Execute another future after this one has resolved successfully. Read more

####

`fn or_else<F, B>(self, f: F) -> OrElse<Self, B, F> where B: IntoFuture<Item = Self::Item>, F: FnOnce(Self::Error) -> B,`

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Execute another future if this one resolves with an error. Read more

####

`fn select<B>(self, other: B) -> Select<Self, <B as IntoFuture>::Future> where B: IntoFuture<Item = Self::Item, Error = Self::Error>,`

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Waits for either one of two futures to complete. Read more

####

`fn select2<B>(self, other: B) -> Select2<Self, <B as IntoFuture>::Future> where B: IntoFuture,`

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Waits for either one of two differently-typed futures to complete. Read more

####

`fn join<B>(self, other: B) -> Join<Self, <B as IntoFuture>::Future> where B: IntoFuture<Error = Self::Error>,`

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Joins the result of two futures, waiting for them both to complete. Read more

####

`fn join3<B, C>( self, b: B, c: C ) -> Join3<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future> where B: IntoFuture<Error = Self::Error>, C: IntoFuture<Error = Self::Error>,`

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Same as `join`, but with more futures.

####

`fn join4<B, C, D>( self, b: B, c: C, d: D ) -> Join4<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future, <D as IntoFuture>::Future> where B: IntoFuture<Error = Self::Error>, C: IntoFuture<Error = Self::Error>, D: IntoFuture<Error = Self::Error>,`

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Same as `join`, but with more futures.

####

`fn join5<B, C, D, E>( self, b: B, c: C, d: D, e: E ) -> Join5<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future, <D as IntoFuture>::Future, <E as IntoFuture>::Future> where B: IntoFuture<Error = Self::Error>, C: IntoFuture<Error = Self::Error>, D: IntoFuture<Error = Self::Error>, E: IntoFuture<Error = Self::Error>,`

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Same as `join`, but with more futures.

####

`fn into_stream(self) -> IntoStream<Self>`

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Convert this future into a single element stream. Read more

####

`fn flatten(self) -> Flatten<Self> where Self::Item: IntoFuture, <Self::Item as IntoFuture>::Error: From<Self::Error>,`

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

####

`fn flatten_stream(self) -> FlattenStream<Self> where Self::Item: Stream, <Self::Item as Stream>::Error == Self::Error,`

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

####

`fn fuse(self) -> Fuse<Self>`

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Fuse a future such that `poll` will never again be called once it has completed. Read more

####

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

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Do something with the item of a future, passing it on. Read more

####

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

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Catches unwinding panics while polling the future. Read more

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`fn shared(self) -> Shared<Self>`

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

## Auto Trait Implementations

###

`impl<A, M> Send for Request<A, M> where A: Send, M: Send, <M as Message>::Result: Send,`

###

`impl<A, M> Sync for Request<A, M> where A: Sync, M: Sync, <M as Message>::Result: Send,`

## Blanket Implementations

###

`impl<T> From for T`

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####

`fn from(t: T) -> T`

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Performs the conversion.

###

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

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####

`fn into(self) -> U`

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Performs the conversion.

###

`impl<T, U> TryFrom for T where T: From<U>,`

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#### `type Error = !`

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

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

Performs the conversion.

###

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

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####

`fn borrow(&self) -> &T`

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Immutably borrows from an owned value. Read more

###

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

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####

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

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Mutably borrows from an owned value. Read more

###

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

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

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

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

Performs the conversion.

###

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

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####

`fn get_type_id(&self) -> TypeId`

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

this method will likely be replaced by an associated static

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

###

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

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#### `type Future = F`

The future that this type can be converted into.

#### `type Item = <F as Future>::Item`

The item that the future may resolve with.

#### `type Error = <F as Future>::Error`

The error that the future may resolve with.

####

`fn into_future(self) -> F`

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Consumes this object and produces a future.

###

`impl<T> Erased for T`

###

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

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####

`fn timeout(self, timeout: Duration) -> Timeout<Self>`

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Creates a new future which allows `self` until `timeout`. Read more

###

`impl<F, A> WrapFuture for F where A: Actor, F: Future,`

#### `type Future = FutureWrap<F, A>`

The future that this type can be converted into.

#### `type Item = <F as Future>::Item`

The item that the future may resolve with.

#### `type Error = <F as Future>::Error`

The error that the future may resolve with.

####

`fn into_actor(self, &A) -> <F as WrapFuture<A>>::Future` |

Convert normal future to a ActorFuture

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