Struct tokio_prepend_io::PrependWriter

pub struct PrependWriter<W> { /* fields omitted */ }

A wrapper that writes prepended data to underlying stream before forwarding all writing operations.

Implementations

impl<W: AsyncWrite> PrependWriter<W>

pub fn new<P: Into<BytesMut>>(inner: W, prepend: P) -> Self

Creates a new writer

Trait Implementations

impl<R: AsyncRead + Unpin> AsyncRead for PrependWriter<R>

pub fn poll_read(
    self: Pin<&mut Self>,
    cx: &mut Context<'_>,
    buf: &mut ReadBuf<'_>
) -> Poll<Result<()>>

Attempts to read from the AsyncRead into buf.

impl<W: AsyncWrite + Unpin> AsyncWrite for PrependWriter<W>

pub fn poll_write(
    self: Pin<&mut Self>,
    cx: &mut Context<'_>,
    buf: &[u8]
) -> Poll<Result<usize>>

Attempt to write bytes from buf into the object.

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

Attempts to flush the object, ensuring that any buffered data reach their destination.

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

Initiates or attempts to shut down this writer, returning success when the I/O connection has completely shut down.

pub fn poll_write_vectored(
    self: Pin<&mut Self>,
    cx: &mut Context<'_>,
    bufs: &[IoSlice<'_>]
) -> Poll<Result<usize, Error>>

Like poll_write, except that it writes from a slice of buffers.

pub fn is_write_vectored(&self) -> bool

Determines if this writer has an efficient poll_write_vectored implementation.