pub trait Body {
type Data: Buf;
type Error;
fn poll_data(
self: Pin<&mut Self>,
cx: &mut Context<'_>
) -> Poll<Option<Result<Self::Data, Self::Error>>>;
fn poll_trailers(
self: Pin<&mut Self>,
cx: &mut Context<'_>
) -> Poll<Result<Option<HeaderMap>, Self::Error>>;
fn is_end_stream(&self) -> bool { ... }
fn size_hint(&self) -> SizeHint { ... }
fn data(&mut self) -> Data<'_, Self>ⓘNotable traits for Data<'a, T>impl<'a, T: Body + Unpin + ?Sized> Future for Data<'a, T> type Output = Option<Result<T::Data, T::Error>>;
where
Self: Unpin + Sized,
{ ... }
fn trailers(&mut self) -> Trailers<'_, Self>ⓘNotable traits for Trailers<'a, T>impl<'a, T: Body + Unpin + ?Sized> Future for Trailers<'a, T> type Output = Result<Option<HeaderMap>, T::Error>;
where
Self: Unpin + Sized,
{ ... }
}Expand description
Trait representing a streaming body of a Request or Response.
Data is streamed via the poll_data function, which asynchronously yields T: Buf values. The
size_hint function provides insight into the total number of bytes that will be streamed.
The poll_trailers function returns an optional set of trailers used to finalize the request /
response exchange. This is mostly used when using the HTTP/2.0 protocol.
Associated Types
Required methods
Attempt to pull out the next data buffer of this stream.
Provided methods
fn is_end_stream(&self) -> bool
fn is_end_stream(&self) -> bool
Returns true when the end of stream has been reached.
An end of stream means that both poll_data and poll_trailers will
return None.
A return value of false does not guarantee that a value will be
returned from poll_stream or poll_trailers.
Returns the bounds on the remaining length of the stream.
When the exact remaining length of the stream is known, the upper bound will be set and will equal the lower bound.
Returns future that resolves to next data chunk, if any.