Struct tokio::net::tcp::OwnedWriteHalf

pub struct OwnedWriteHalf { /* private fields */ }

Owned write half of a TcpStream, created by into_split.

Note that in the AsyncWrite implementation of this type, poll_shutdown will shut down the TCP stream in the write direction. Dropping the write half will also shut down the write half of the TCP stream.

Writing to an OwnedWriteHalf is usually done using the convenience methods found on the AsyncWriteExt trait.

Implementations

impl OwnedWriteHalf

pub fn reunite(self, other: OwnedReadHalf) -> Result<TcpStream, ReuniteError>

Attempts to put the two halves of a TcpStream back together and recover the original socket. Succeeds only if the two halves originated from the same call to into_split.

pub fn forget(self)

Destroys the write half, but don’t close the write half of the stream until the read half is dropped. If the read half has already been dropped, this closes the stream.

pub async fn ready(&self, interest: Interest) -> Result<Ready>

Waits for any of the requested ready states.

This function is usually paired with try_write(). It can be used instead of writable() to check the returned ready set for Ready::WRITABLE and Ready::WRITE_CLOSED events.

The function may complete without the socket being ready. This is a false-positive and attempting an operation will return with io::ErrorKind::WouldBlock. The function can also return with an empty Ready set, so you should always check the returned value and possibly wait again if the requested states are not set.

This function is equivalent to TcpStream::ready.

Cancel safety

This method is cancel safe. Once a readiness event occurs, the method will continue to return immediately until the readiness event is consumed by an attempt to read or write that fails with WouldBlock or Poll::Pending.

pub async fn writable(&self) -> Result<()>

Waits for the socket to become writable.

This function is equivalent to ready(Interest::WRITABLE) and is usually paired with try_write().

Cancel safety

This method is cancel safe. Once a readiness event occurs, the method will continue to return immediately until the readiness event is consumed by an attempt to write that fails with WouldBlock or Poll::Pending.

pub fn try_write(&self, buf: &[u8]) -> Result<usize>

Tries to write a buffer to the stream, returning how many bytes were written.

The function will attempt to write the entire contents of buf, but only part of the buffer may be written.

This function is usually paired with writable().

Return

If data is successfully written, Ok(n) is returned, where n is the number of bytes written. If the stream is not ready to write data, Err(io::ErrorKind::WouldBlock) is returned.

pub fn try_write_vectored(&self, bufs: &[IoSlice<'_>]) -> Result<usize>

Tries to write several buffers to the stream, returning how many bytes were written.

Data is written from each buffer in order, with the final buffer read from possible being only partially consumed. This method behaves equivalently to a single call to try_write() with concatenated buffers.

This function is usually paired with writable().

Return

If data is successfully written, Ok(n) is returned, where n is the number of bytes written. If the stream is not ready to write data, Err(io::ErrorKind::WouldBlock) is returned.

pub fn peer_addr(&self) -> Result<SocketAddr>

Returns the remote address that this stream is connected to.

pub fn local_addr(&self) -> Result<SocketAddr>

Returns the local address that this stream is bound to.

Trait Implementations

impl AsRef<TcpStream> for OwnedWriteHalf

fn as_ref(&self) -> &TcpStream

Converts this type into a shared reference of the (usually inferred) input type.

impl AsyncWrite for OwnedWriteHalf

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

Attempt to write bytes from buf into the object.

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

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.

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

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

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

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

impl Debug for OwnedWriteHalf

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

Formats the value using the given formatter.

impl Drop for OwnedWriteHalf

fn drop(&mut self)

Executes the destructor for this type.