# actix_web::dev::MessageBody - Rust
API documentation for the Rust `MessageBody` struct in crate `actix_web`.
Keywords: rust, rustlang, rust-lang, MessageBody

# Struct actix_web::dev::MessageBody [−] [src]

    pub struct MessageBody<T: HttpMessage> { /* fields omitted */ }

Future that resolves to a complete http message body.

## Methods

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`impl<T: HttpMessage> MessageBody<T>`

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`pub fn new(req: &T) -> MessageBody<T>`

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Create `MessageBody` for request.

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`pub fn limit(self, limit: usize) -> Self`

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Change max size of payload. By default max size is 256Kb

## Trait Implementations

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`impl<T> Future for MessageBody<T> where T: HttpMessage + 'static,`

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#### `type Item = Bytes`

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

#### `type Error = PayloadError`

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

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`fn poll(&mut self) -> Poll<Self::Item, Self::Error>`

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

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`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

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`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

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`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

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`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

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`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

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`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

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`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

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`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

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`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.

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`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.

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`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.

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

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Convert this future into a single element stream. Read more

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`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

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`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

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`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

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`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

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`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

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`impl<T> !Send for MessageBody<T>`

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`impl<T> !Sync for MessageBody<T>`

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