Struct AsyncReadWriteChain

pub struct AsyncReadWriteChain<R: AsyncRead, RW: AsyncRead + AsyncWrite> { /* private fields */ }

A wrapper for a pair of structs, R and RW.

Implements tokio::io::AsyncRead. Reads from R until it is empty, then reads from RW.

Implements tokio::io::AsyncWrite. Passes all writes through to RW.

This is like the struct returned by tokio::io::AsyncReadExt::chain that also passes through writes.

Implementations

impl<R: AsyncRead, RW: AsyncRead + AsyncWrite> AsyncReadWriteChain<R, RW>

pub fn new(reader: R, read_writer: RW) -> AsyncReadWriteChain<R, RW>

See AsyncReadWriteChain.

Trait Implementations

impl<R: AsyncRead + Unpin, RW: AsyncRead + AsyncWrite + Unpin> AsyncRead for AsyncReadWriteChain<R, RW>

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

Attempts to read from the AsyncRead into buf.

impl<R: AsyncRead + Unpin, RW: AsyncRead + AsyncWrite + Unpin> AsyncWrite for AsyncReadWriteChain<R, RW>

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

Attempt to write bytes from buf into the object.

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

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

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

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

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.

fn is_write_vectored(&self) -> bool

Determines if this writer has an efficient poll_write_vectored implementation.