Struct tokio::io::util::read_exact::ReadExact

pub struct ReadExact<'a, A: ?Sized> {
    reader: &'a mut A,
    buf: ReadBuf<'a>,
    _pin: PhantomPinned,
}

Creates a future which will read exactly enough bytes to fill buf, returning an error if EOF is hit sooner.

On success the number of bytes is returned

Fields

reader: &'a mut A

buf: ReadBuf<'a>

_pin: PhantomPinned

Trait Implementations

impl<'a, A: Debug + ?Sized> Debug for ReadExact<'a, A>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<A> Future for ReadExact<'_, A>

where A: AsyncRead + Unpin + ?Sized,

type Output = Result<usize, Error>

The type of value produced on completion.

fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<usize>>

Attempts to resolve the future to a final value, registering the current task for wakeup if the value is not yet available.

impl<'__pin, 'a, A: ?Sized> Unpin for ReadExact<'a, A>

where PinnedFieldsOf<__Origin<'__pin, 'a, A>>: Unpin,