Trait SeekableStream 

pub trait SeekableStream:
    AsyncRead
    + Unpin
    + Debug
    + Send
    + Sync
    + DynClone {
    // Required methods
    fn reset<'life0, 'async_trait>(
        &'life0 mut self,
    ) -> Pin<Box<dyn Future<Output = Result<(), Error>> + Send + 'async_trait>>
       where 'life0: 'async_trait,
             Self: 'async_trait;
    fn len(&self) -> Option<u64>;

    // Provided methods
    fn is_empty(&self) -> Option<bool> { ... }
    fn buffer_size(&self) -> usize { ... }
}

Enable a type implementing AsyncRead to be consumed as if it were a Stream of Bytes.

Required Methods

fn reset<'life0, 'async_trait>( &'life0 mut self, ) -> Pin<Box<dyn Future<Output = Result<(), Error>> + Send + 'async_trait>>

where 'life0: 'async_trait, Self: 'async_trait,

Resets the stream position to the beginning.

fn len(&self) -> Option<u64>

Returns the total length of the stream in bytes, if known.

Notes

TransportPolicy implementations will most often want to send a content-length header when len returns Some but use transfer-encoding: chunked when len returns None.

Provided Methods

fn is_empty(&self) -> Option<bool>

Returns true if the stream is empty, if known.

fn buffer_size(&self) -> usize

Returns the size of the buffer to use when reading from the stream.

Trait Implementations

impl<'clone> Clone for Box<dyn SeekableStream + 'clone>

fn clone(&self) -> Box<dyn SeekableStream + 'clone>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'clone> Clone for Box<dyn SeekableStream + Send + 'clone>

fn clone(&self) -> Box<dyn SeekableStream + Send + 'clone>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'clone> Clone for Box<dyn SeekableStream + Sync + 'clone>

fn clone(&self) -> Box<dyn SeekableStream + Sync + 'clone>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'clone> Clone for Box<dyn SeekableStream + Sync + Send + 'clone>

fn clone(&self) -> Box<dyn SeekableStream + Sync + Send + 'clone>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl From<Box<dyn SeekableStream>> for Body

fn from(seekable_stream: Box<dyn SeekableStream>) -> Body

Converts to this type from the input type.

impl Stream for dyn SeekableStream

type Item = Result<Bytes, Error>

Values yielded by the stream.

fn poll_next( self: Pin<&mut (dyn SeekableStream + 'static)>, cx: &mut Context<'_>, ) -> Poll<Option<<dyn SeekableStream as Stream>::Item>>

Attempt to pull out the next value of this stream, registering the current task for wakeup if the value is not yet available, and returning None if the stream is exhausted.

fn size_hint(&self) -> (usize, Option<usize>)

Returns the bounds on the remaining length of the stream.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl SeekableStream for BytesStream