Trait actix_web::dev::MessageBody

pub trait MessageBody {
    fn size(&self) -> BodySize;
    fn poll_next(
        self: Pin<&mut Self>, 
        cx: &mut Context
    ) -> Poll<Option<Result<Bytes, Error>>>;
}

Type that provides this trait can be streamed to a peer.

Required methods

fn size(&self) -> BodySize

fn poll_next(
    self: Pin<&mut Self>,
    cx: &mut Context
) -> Poll<Option<Result<Bytes, Error>>>

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Methods

impl dyn MessageBody + 'static

pub fn downcast_ref<T>(&self) -> Option<&T> where
    T: 'static + MessageBody, 

Downcasts generic body to a specific type.

pub fn downcast_mut<T>(&mut self) -> Option<&mut T> where
    T: 'static + MessageBody, 

Downcasts a generic body to a mutable specific type.

Implementations on Foreign Types

impl MessageBody for String

fn size(&self) -> BodySize

fn poll_next(
    self: Pin<&mut String>,
    &mut Context
) -> Poll<Option<Result<Bytes, Error>>>

impl MessageBody for ()

fn size(&self) -> BodySize

fn poll_next(
    self: Pin<&mut ()>,
    &mut Context
) -> Poll<Option<Result<Bytes, Error>>>

impl<T> MessageBody for Box<T> where
    T: MessageBody + Unpin, 

fn size(&self) -> BodySize

fn poll_next(
    self: Pin<&mut Box<T>>,
    cx: &mut Context
) -> Poll<Option<Result<Bytes, Error>>>

impl<B> MessageBody for Encoder<B> where
    B: MessageBody, 

fn size(&self) -> BodySize

fn poll_next(
    self: Pin<&mut Encoder<B>>,
    cx: &mut Context
) -> Poll<Option<Result<Bytes, Error>>>

impl MessageBody for Vec<u8>

fn size(&self) -> BodySize

fn poll_next(
    self: Pin<&mut Vec<u8>>,
    &mut Context
) -> Poll<Option<Result<Bytes, Error>>>

impl MessageBody for &'static str

fn size(&self) -> BodySize

fn poll_next(
    self: Pin<&mut &'static str>,
    &mut Context
) -> Poll<Option<Result<Bytes, Error>>>

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Implementors

impl MessageBody for Body

fn size(&self) -> BodySize

fn poll_next(
    self: Pin<&mut Body>,
    cx: &mut Context
) -> Poll<Option<Result<Bytes, Error>>>

impl MessageBody for Bytes

fn size(&self) -> BodySize

fn poll_next(
    self: Pin<&mut Bytes>,
    &mut Context
) -> Poll<Option<Result<Bytes, Error>>>

impl MessageBody for BytesMut

fn size(&self) -> BodySize

fn poll_next(
    self: Pin<&mut BytesMut>,
    &mut Context
) -> Poll<Option<Result<Bytes, Error>>>

impl<B> MessageBody for ResponseBody<B> where
    B: MessageBody, 

fn size(&self) -> BodySize

fn poll_next(
    self: Pin<&mut ResponseBody<B>>,
    cx: &mut Context
) -> Poll<Option<Result<Bytes, Error>>>

impl<S> MessageBody for SizedStream<S> where
    S: Stream<Item = Result<Bytes, Error>> + Unpin, 

fn size(&self) -> BodySize

fn poll_next(
    self: Pin<&mut SizedStream<S>>,
    cx: &mut Context
) -> Poll<Option<Result<Bytes, Error>>>

Attempts to pull out the next value of the underlying [Stream].

Empty values are skipped to prevent [SizedStream]'s transmission being ended on a zero-length chunk, but rather proceed until the underlying [Stream] ends.

impl<S, E> MessageBody for BodyStream<S, E> where
    E: Into<Error>,
    S: Stream<Item = Result<Bytes, E>> + Unpin, 

fn size(&self) -> BodySize

fn poll_next(
    self: Pin<&mut BodyStream<S, E>>,
    cx: &mut Context
) -> Poll<Option<Result<Bytes, Error>>>

Attempts to pull out the next value of the underlying [Stream].

Empty values are skipped to prevent [BodyStream]'s transmission being ended on a zero-length chunk, but rather proceed until the underlying [Stream] ends.

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