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<p class='location'>Trait AsyncWrite</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#required-methods">Required Methods</a><div class="sidebar-links"><a href="#tymethod.shutdown">shutdown</a></div><a class="sidebar-title" href="#provided-methods">Provided Methods</a><div class="sidebar-links"><a href="#method.poll_write">poll_write</a><a href="#method.poll_flush">poll_flush</a><a href="#method.write_buf">write_buf</a></div><a class="sidebar-title" href="#foreign-impls">Implementations on Foreign Types</a><div class="sidebar-links"><a href="#impl-AsyncWrite">Box<T></a><a href="#impl-AsyncWrite">&'a mut T</a><a href="#impl-AsyncWrite">Sink</a><a href="#impl-AsyncWrite">BufWriter<T></a><a href="#impl-AsyncWrite">Cursor<&'a mut [u8]></a><a href="#impl-AsyncWrite">Cursor<Vec<u8>></a><a href="#impl-AsyncWrite">Cursor<Box<[u8]>></a></div><a class="sidebar-title" href="#implementors">Implementors</a></div><p class='location'><a href='index.html'>tokio_io</a></p><script>window.sidebarCurrent = {name: 'AsyncWrite', ty: 'trait', relpath: ''};</script><script defer src="sidebar-items.js"></script></div>
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<h1 class='fqn'><span class='in-band'>Trait <a href='index.html'>tokio_io</a>::<wbr><a class="trait" href=''>AsyncWrite</a></span><span class='out-of-band'><span id='render-detail'>
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[<span class='inner'>−</span>]
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</span><a class='srclink' href='../src/tokio_io/async_write.rs.html#36-149' title='goto source code'>[src]</a></span></h1>
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<pre class='rust trait'>pub trait AsyncWrite: <a class="trait" href="https://doc.rust-lang.org/nightly/std/io/trait.Write.html" title="trait std::io::Write">Write</a> {
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fn <a href='#tymethod.shutdown' class='fnname'>shutdown</a>(&mut self) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>>;
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fn <a href='#method.poll_write' class='fnname'>poll_write</a>(&mut self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&[</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>> { ... }
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<div class='item-spacer'></div> fn <a href='#method.poll_flush' class='fnname'>poll_flush</a>(&mut self) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>> { ... }
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<div class='item-spacer'></div> fn <a href='#method.write_buf' class='fnname'>write_buf</a><B: <a class="trait" href="../bytes/buf/buf/trait.Buf.html" title="trait bytes::buf::buf::Buf">Buf</a>>(&mut self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>B) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>><br> <span class="where">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a></span>,
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{ ... }
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}</pre><div class='docblock'><p>Writes bytes asynchronously.</p>
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<p>The trait inherits from <code>std::io::Write</code> and indicates that an I/O object is
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<strong>nonblocking</strong>. All non-blocking I/O objects must return an error when
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bytes cannot be written instead of blocking the current thread.</p>
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<p>Specifically, this means that the <code>write</code> function will return one of the
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following:</p>
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<ul>
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<li>
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<p><code>Ok(n)</code> means that <code>n</code> bytes of data was immediately written .</p>
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</li>
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<li>
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<p><code>Err(e) if e.kind() == ErrorKind::WouldBlock</code> means that no data was
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written from the buffer provided. The I/O object is not currently
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writable but may become writable in the future. Most importantly, <strong>the
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current future's task is scheduled to get unparked when the object is
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readable</strong>. This means that like <code>Future::poll</code> you'll receive a
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notification when the I/O object is writable again.</p>
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</li>
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<li>
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<p><code>Err(e)</code> for other errors are standard I/O errors coming from the
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underlying object.</p>
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</li>
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</ul>
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<p>This trait importantly means that the <code>write</code> method only works in the
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context of a future's task. The object may panic if used outside of a task.</p>
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<p>Note that this trait also represents that the <code>Write::flush</code> method works
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very similarly to the <code>write</code> method, notably that <code>Ok(())</code> means that the
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writer has successfully been flushed, a "would block" error means that the
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current task is ready to receive a notification when flushing can make more
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progress, and otherwise normal errors can happen as well.</p>
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</div>
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<h2 id='required-methods' class='small-section-header'>
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Required Methods<a href='#required-methods' class='anchor'></a>
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</h2>
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<div class='methods'>
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<h3 id='tymethod.shutdown' class='method'><span id='shutdown.v' class='invisible'><code>fn <a href='#tymethod.shutdown' class='fnname'>shutdown</a>(&mut self) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>></code></span></h3><div class='docblock'><p>Initiates or attempts to shut down this writer, returning success when
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the I/O connection has completely shut down.</p>
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<p>This method is intended to be used for asynchronous shutdown of I/O
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connections. For example this is suitable for implementing shutdown of a
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TLS connection or calling <code>TcpStream::shutdown</code> on a proxied connection.
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Protocols sometimes need to flush out final pieces of data or otherwise
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perform a graceful shutdown handshake, reading/writing more data as
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appropriate. This method is the hook for such protocols to implement the
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graceful shutdown logic.</p>
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<p>This <code>shutdown</code> method is required by implementors of the
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<code>AsyncWrite</code> trait. Wrappers typically just want to proxy this call
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through to the wrapped type, and base types will typically implement
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shutdown logic here or just return <code>Ok(().into())</code>. Note that if you're
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wrapping an underlying <code>AsyncWrite</code> a call to <code>shutdown</code> implies that
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transitively the entire stream has been shut down. After your wrapper's
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shutdown logic has been executed you should shut down the underlying
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stream.</p>
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<p>Invocation of a <code>shutdown</code> implies an invocation of <code>flush</code>. Once this
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method returns <code>Ready</code> it implies that a flush successfully happened
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before the shutdown happened. That is, callers don't need to call
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<code>flush</code> before calling <code>shutdown</code>. They can rely that by calling
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<code>shutdown</code> any pending buffered data will be written out.</p>
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<h1 id="return-value" class="section-header"><a href="#return-value">Return value</a></h1>
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<p>This function returns a <code>Poll<(), io::Error></code> classified as such:</p>
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<ul>
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<li>
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<p><code>Ok(Async::Ready(()))</code> - indicates that the connection was
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successfully shut down and is now safe to deallocate/drop/close
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resources associated with it. This method means that the current task
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will no longer receive any notifications due to this method and the
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I/O object itself is likely no longer usable.</p>
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</li>
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<li>
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<p><code>Ok(Async::NotReady)</code> - indicates that shutdown is initiated but could
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not complete just yet. This may mean that more I/O needs to happen to
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continue this shutdown operation. The current task is scheduled to
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receive a notification when it's otherwise ready to continue the
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shutdown operation. When woken up this method should be called again.</p>
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</li>
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<li>
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<p><code>Err(e)</code> - indicates a fatal error has happened with shutdown,
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indicating that the shutdown operation did not complete successfully.
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This typically means that the I/O object is no longer usable.</p>
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</li>
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</ul>
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<h1 id="errors" class="section-header"><a href="#errors">Errors</a></h1>
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<p>This function can return normal I/O errors through <code>Err</code>, described
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above. Additionally this method may also render the underlying
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<code>Write::write</code> method no longer usable (e.g. will return errors in the
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future). It's recommended that once <code>shutdown</code> is called the
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<code>write</code> method is no longer called.</p>
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<h1 id="panics" class="section-header"><a href="#panics">Panics</a></h1>
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<p>This function will panic if not called within the context of a future's
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task.</p>
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</div></div>
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<h2 id='provided-methods' class='small-section-header'>
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Provided Methods<a href='#provided-methods' class='anchor'></a>
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</h2>
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<div class='methods'>
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<h3 id='method.poll_write' class='method'><span id='poll_write.v' class='invisible'><code>fn <a href='#method.poll_write' class='fnname'>poll_write</a>(&mut self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&[</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>></code></span></h3><div class='docblock'><p>Attempt to write bytes from <code>buf</code> into the object.</p>
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<p>On success, returns <code>Ok(Async::Ready(num_bytes_written))</code>.</p>
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<p>If the object is not ready for writing, the method returns
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<code>Ok(Async::Pending)</code> and arranges for the current task (via
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<code>cx.waker()</code>) to receive a notification when the object becomes
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readable or is closed.</p>
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</div><h3 id='method.poll_flush' class='method'><span id='poll_flush.v' class='invisible'><code>fn <a href='#method.poll_flush' class='fnname'>poll_flush</a>(&mut self) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>></code></span></h3><div class='docblock'><p>Attempt to flush the object, ensuring that any buffered data reach
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their destination.</p>
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<p>On success, returns <code>Ok(Async::Ready(()))</code>.</p>
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<p>If flushing cannot immediately complete, this method returns
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<code>Ok(Async::Pending)</code> and arranges for the current task (via
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<code>cx.waker()</code>) to receive a notification when the object can make
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progress towards flushing.</p>
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</div><h3 id='method.write_buf' class='method'><span id='write_buf.v' class='invisible'><code>fn <a href='#method.write_buf' class='fnname'>write_buf</a><B: <a class="trait" href="../bytes/buf/buf/trait.Buf.html" title="trait bytes::buf::buf::Buf">Buf</a>>(&mut self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>B) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>> <span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code></span></h3><div class='docblock'><p>Write a <code>Buf</code> into this value, returning how many bytes were written.</p>
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<p>Note that this method will advance the <code>buf</code> provided automatically by
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the number of bytes written.</p>
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</div></div>
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<h2 id='foreign-impls' class='small-section-header'>
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|||
|
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Implementations on Foreign Types<a href='#foreign-impls' class='anchor'></a>
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|||
|
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</h2>
|
|||
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<h3 id='impl-AsyncWrite' class='impl'><span class='in-band'><code>impl<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="../tokio_io/trait.AsyncWrite.html" title="trait tokio_io::AsyncWrite">AsyncWrite</a>> <a class="trait" href="../tokio_io/trait.AsyncWrite.html" title="trait tokio_io::AsyncWrite">AsyncWrite</a> for <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a><T></code><a href='#impl-AsyncWrite' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#151-155' title='goto source code'>[src]</a></span></h3>
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<span class='docblock autohide'><div class='impl-items'><h4 id='method.shutdown' class="method"><span id='shutdown.v-1' class='invisible'><code>fn <a href='#method.shutdown' class='fnname'>shutdown</a>(&mut self) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#152-154' title='goto source code'>[src]</a></span></h4>
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<h4 id='method.poll_write-1' class="method"><span id='poll_write.v-1' class='invisible'><code>fn <a href='../tokio_io/trait.AsyncWrite.html#method.poll_write' class='fnname'>poll_write</a>(&mut self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&[</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#45-53' title='goto source code'>[src]</a></span></h4>
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<h4 id='method.poll_flush-1' class="method"><span id='poll_flush.v-1' class='invisible'><code>fn <a href='../tokio_io/trait.AsyncWrite.html#method.poll_flush' class='fnname'>poll_flush</a>(&mut self) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#64-72' title='goto source code'>[src]</a></span></h4>
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<h4 id='method.write_buf-1' class="method"><span id='write_buf.v-1' class='invisible'><code>fn <a href='../tokio_io/trait.AsyncWrite.html#method.write_buf' class='fnname'>write_buf</a><B: <a class="trait" href="../bytes/buf/buf/trait.Buf.html" title="trait bytes::buf::buf::Buf">Buf</a>>(&mut self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>B) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>> <span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#138-148' title='goto source code'>[src]</a></span></h4>
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</div></span><h3 id='impl-AsyncWrite-1' class='impl'><span class='in-band'><code>impl<'a, T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="../tokio_io/trait.AsyncWrite.html" title="trait tokio_io::AsyncWrite">AsyncWrite</a>> <a class="trait" href="../tokio_io/trait.AsyncWrite.html" title="trait tokio_io::AsyncWrite">AsyncWrite</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a mut </a>T</code><a href='#impl-AsyncWrite-1' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#156-160' title='goto source code'>[src]</a></span></h3>
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<span class='docblock autohide'><div class='impl-items'><h4 id='method.shutdown-1' class="method"><span id='shutdown.v-2' class='invisible'><code>fn <a href='#method.shutdown' class='fnname'>shutdown</a>(&mut self) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#157-159' title='goto source code'>[src]</a></span></h4>
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<h4 id='method.poll_write-2' class="method"><span id='poll_write.v-2' class='invisible'><code>fn <a href='../tokio_io/trait.AsyncWrite.html#method.poll_write' class='fnname'>poll_write</a>(&mut self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&[</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#45-53' title='goto source code'>[src]</a></span></h4>
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<h4 id='method.poll_flush-2' class="method"><span id='poll_flush.v-2' class='invisible'><code>fn <a href='../tokio_io/trait.AsyncWrite.html#method.poll_flush' class='fnname'>poll_flush</a>(&mut self) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#64-72' title='goto source code'>[src]</a></span></h4>
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<h4 id='method.write_buf-2' class="method"><span id='write_buf.v-2' class='invisible'><code>fn <a href='../tokio_io/trait.AsyncWrite.html#method.write_buf' class='fnname'>write_buf</a><B: <a class="trait" href="../bytes/buf/buf/trait.Buf.html" title="trait bytes::buf::buf::Buf">Buf</a>>(&mut self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>B) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>> <span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#138-148' title='goto source code'>[src]</a></span></h4>
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</div></span><h3 id='impl-AsyncWrite-2' class='impl'><span class='in-band'><code>impl <a class="trait" href="../tokio_io/trait.AsyncWrite.html" title="trait tokio_io::AsyncWrite">AsyncWrite</a> for <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/util/struct.Sink.html" title="struct std::io::util::Sink">Sink</a></code><a href='#impl-AsyncWrite-2' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#168-172' title='goto source code'>[src]</a></span></h3>
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<span class='docblock autohide'><div class='impl-items'><h4 id='method.shutdown-2' class="method"><span id='shutdown.v-3' class='invisible'><code>fn <a href='#method.shutdown' class='fnname'>shutdown</a>(&mut self) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#169-171' title='goto source code'>[src]</a></span></h4>
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<h4 id='method.poll_write-3' class="method"><span id='poll_write.v-3' class='invisible'><code>fn <a href='../tokio_io/trait.AsyncWrite.html#method.poll_write' class='fnname'>poll_write</a>(&mut self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&[</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#45-53' title='goto source code'>[src]</a></span></h4>
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<h4 id='method.poll_flush-3' class="method"><span id='poll_flush.v-3' class='invisible'><code>fn <a href='../tokio_io/trait.AsyncWrite.html#method.poll_flush' class='fnname'>poll_flush</a>(&mut self) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#64-72' title='goto source code'>[src]</a></span></h4>
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<h4 id='method.write_buf-3' class="method"><span id='write_buf.v-3' class='invisible'><code>fn <a href='../tokio_io/trait.AsyncWrite.html#method.write_buf' class='fnname'>write_buf</a><B: <a class="trait" href="../bytes/buf/buf/trait.Buf.html" title="trait bytes::buf::buf::Buf">Buf</a>>(&mut self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>B) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>> <span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#138-148' title='goto source code'>[src]</a></span></h4>
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</div></span><h3 id='impl-AsyncWrite-3' class='impl'><span class='in-band'><code>impl<T: <a class="trait" href="../tokio_io/trait.AsyncWrite.html" title="trait tokio_io::AsyncWrite">AsyncWrite</a>> <a class="trait" href="../tokio_io/trait.AsyncWrite.html" title="trait tokio_io::AsyncWrite">AsyncWrite</a> for <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/buffered/struct.BufWriter.html" title="struct std::io::buffered::BufWriter">BufWriter</a><T></code><a href='#impl-AsyncWrite-3' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#187-192' title='goto source code'>[src]</a></span></h3>
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<span class='docblock autohide'><div class='impl-items'><h4 id='method.shutdown-3' class="method"><span id='shutdown.v-4' class='invisible'><code>fn <a href='#method.shutdown' class='fnname'>shutdown</a>(&mut self) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#188-191' title='goto source code'>[src]</a></span></h4>
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<h4 id='method.poll_write-4' class="method"><span id='poll_write.v-4' class='invisible'><code>fn <a href='../tokio_io/trait.AsyncWrite.html#method.poll_write' class='fnname'>poll_write</a>(&mut self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&[</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#45-53' title='goto source code'>[src]</a></span></h4>
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<h4 id='method.poll_flush-4' class="method"><span id='poll_flush.v-4' class='invisible'><code>fn <a href='../tokio_io/trait.AsyncWrite.html#method.poll_flush' class='fnname'>poll_flush</a>(&mut self) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#64-72' title='goto source code'>[src]</a></span></h4>
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<h4 id='method.write_buf-4' class="method"><span id='write_buf.v-4' class='invisible'><code>fn <a href='../tokio_io/trait.AsyncWrite.html#method.write_buf' class='fnname'>write_buf</a><B: <a class="trait" href="../bytes/buf/buf/trait.Buf.html" title="trait bytes::buf::buf::Buf">Buf</a>>(&mut self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>B) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>> <span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#138-148' title='goto source code'>[src]</a></span></h4>
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</div></span><h3 id='impl-AsyncWrite-4' class='impl'><span class='in-band'><code>impl<'a> <a class="trait" href="../tokio_io/trait.AsyncWrite.html" title="trait tokio_io::AsyncWrite">AsyncWrite</a> for <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/cursor/struct.Cursor.html" title="struct std::io::cursor::Cursor">Cursor</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&'a mut [</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>></code><a href='#impl-AsyncWrite-4' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#203-207' title='goto source code'>[src]</a></span></h3>
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<span class='docblock autohide'><div class='impl-items'><h4 id='method.shutdown-4' class="method"><span id='shutdown.v-5' class='invisible'><code>fn <a href='#method.shutdown' class='fnname'>shutdown</a>(&mut self) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#204-206' title='goto source code'>[src]</a></span></h4>
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<h4 id='method.poll_write-5' class="method"><span id='poll_write.v-5' class='invisible'><code>fn <a href='../tokio_io/trait.AsyncWrite.html#method.poll_write' class='fnname'>poll_write</a>(&mut self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&[</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#45-53' title='goto source code'>[src]</a></span></h4>
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<h4 id='method.poll_flush-5' class="method"><span id='poll_flush.v-5' class='invisible'><code>fn <a href='../tokio_io/trait.AsyncWrite.html#method.poll_flush' class='fnname'>poll_flush</a>(&mut self) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#64-72' title='goto source code'>[src]</a></span></h4>
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<h4 id='method.write_buf-5' class="method"><span id='write_buf.v-5' class='invisible'><code>fn <a href='../tokio_io/trait.AsyncWrite.html#method.write_buf' class='fnname'>write_buf</a><B: <a class="trait" href="../bytes/buf/buf/trait.Buf.html" title="trait bytes::buf::buf::Buf">Buf</a>>(&mut self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>B) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>> <span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#138-148' title='goto source code'>[src]</a></span></h4>
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</div></span><h3 id='impl-AsyncWrite-5' class='impl'><span class='in-band'><code>impl <a class="trait" href="../tokio_io/trait.AsyncWrite.html" title="trait tokio_io::AsyncWrite">AsyncWrite</a> for <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/cursor/struct.Cursor.html" title="struct std::io::cursor::Cursor">Cursor</a><<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>>></code><a href='#impl-AsyncWrite-5' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#209-213' title='goto source code'>[src]</a></span></h3>
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<span class='docblock autohide'><div class='impl-items'><h4 id='method.shutdown-5' class="method"><span id='shutdown.v-6' class='invisible'><code>fn <a href='#method.shutdown' class='fnname'>shutdown</a>(&mut self) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#210-212' title='goto source code'>[src]</a></span></h4>
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<h4 id='method.poll_write-6' class="method"><span id='poll_write.v-6' class='invisible'><code>fn <a href='../tokio_io/trait.AsyncWrite.html#method.poll_write' class='fnname'>poll_write</a>(&mut self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&[</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#45-53' title='goto source code'>[src]</a></span></h4>
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<h4 id='method.poll_flush-6' class="method"><span id='poll_flush.v-6' class='invisible'><code>fn <a href='../tokio_io/trait.AsyncWrite.html#method.poll_flush' class='fnname'>poll_flush</a>(&mut self) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#64-72' title='goto source code'>[src]</a></span></h4>
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<h4 id='method.write_buf-6' class="method"><span id='write_buf.v-6' class='invisible'><code>fn <a href='../tokio_io/trait.AsyncWrite.html#method.write_buf' class='fnname'>write_buf</a><B: <a class="trait" href="../bytes/buf/buf/trait.Buf.html" title="trait bytes::buf::buf::Buf">Buf</a>>(&mut self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>B) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>> <span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#138-148' title='goto source code'>[src]</a></span></h4>
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</div></span><h3 id='impl-AsyncWrite-6' class='impl'><span class='in-band'><code>impl <a class="trait" href="../tokio_io/trait.AsyncWrite.html" title="trait tokio_io::AsyncWrite">AsyncWrite</a> for <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/cursor/struct.Cursor.html" title="struct std::io::cursor::Cursor">Cursor</a><<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>>></code><a href='#impl-AsyncWrite-6' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#215-219' title='goto source code'>[src]</a></span></h3>
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<span class='docblock autohide'><div class='impl-items'><h4 id='method.shutdown-6' class="method"><span id='shutdown.v-7' class='invisible'><code>fn <a href='#method.shutdown' class='fnname'>shutdown</a>(&mut self) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#216-218' title='goto source code'>[src]</a></span></h4>
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<h4 id='method.poll_write-7' class="method"><span id='poll_write.v-7' class='invisible'><code>fn <a href='../tokio_io/trait.AsyncWrite.html#method.poll_write' class='fnname'>poll_write</a>(&mut self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&[</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#45-53' title='goto source code'>[src]</a></span></h4>
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<h4 id='method.poll_flush-7' class="method"><span id='poll_flush.v-7' class='invisible'><code>fn <a href='../tokio_io/trait.AsyncWrite.html#method.poll_flush' class='fnname'>poll_flush</a>(&mut self) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#64-72' title='goto source code'>[src]</a></span></h4>
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<h4 id='method.write_buf-7' class="method"><span id='write_buf.v-7' class='invisible'><code>fn <a href='../tokio_io/trait.AsyncWrite.html#method.write_buf' class='fnname'>write_buf</a><B: <a class="trait" href="../bytes/buf/buf/trait.Buf.html" title="trait bytes::buf::buf::Buf">Buf</a>>(&mut self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>B) -> <a class="type" href="../futures/poll/type.Poll.html" title="type futures::poll::Poll">Poll</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>> <span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/tokio_io/async_write.rs.html#138-148' title='goto source code'>[src]</a></span></h4>
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<li><div class='out-of-band'><a class='srclink' href='../src/tokio_io/allow_std.rs.html#55-59' title='goto source code'>[src]</a></div><code>impl<T> AsyncWrite for <a class="struct" href="../tokio_io/io/struct.AllowStdIo.html" title="struct tokio_io::io::AllowStdIo">AllowStdIo</a><T> <span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/std/io/trait.Write.html" title="trait std::io::Write">Write</a>, </span></code></li>
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<li><div class='out-of-band'><a class='srclink' href='../src/tokio_io/split.rs.html#64-80' title='goto source code'>[src]</a></div><code>impl<T: <a class="trait" href="../tokio_io/trait.AsyncWrite.html" title="trait tokio_io::AsyncWrite">AsyncWrite</a>> AsyncWrite for <a class="struct" href="../tokio_io/io/struct.WriteHalf.html" title="struct tokio_io::io::WriteHalf">WriteHalf</a><T></code></li>
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