Trait hyper::body::HttpBody [−][src]
pub trait HttpBody {
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<HeaderValue>>, Self::Error>>;
fn is_end_stream(&self) -> bool { ... }
fn size_hint(&self) -> SizeHint { ... }
fn data(&mut self) -> Data<'_, Self>
where
Self: Unpin,
{ ... }
fn trailers(&mut self) -> Trailers<'_, Self>
where
Self: Unpin,
{ ... }
fn map_data<F, B>(self, f: F) -> MapData<Self, F>
where
F: FnMut(Self::Data) -> B,
B: Buf,
{ ... }
fn map_err<F, E>(self, f: F) -> MapErr<Self, F>
where
F: FnMut(Self::Error) -> E,
{ ... }
fn boxed(self) -> BoxBody<Self::Data, Self::Error>
where
Self: Send + Sync + 'static,
{ ... }
}
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.
Returns future that resolves to trailers, if any.
Maps this body’s data value to a different value.
Maps this body’s error value to a different value.