| <html> |
| <head> |
| <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> |
| <title>windows::basic_stream_handle::async_write_some</title> |
| <link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css"> |
| <meta name="generator" content="DocBook XSL Stylesheets V1.75.2"> |
| <link rel="home" href="../../../boost_asio.html" title="Boost.Asio"> |
| <link rel="up" href="../windows__basic_stream_handle.html" title="windows::basic_stream_handle"> |
| <link rel="prev" href="async_read_some.html" title="windows::basic_stream_handle::async_read_some"> |
| <link rel="next" href="basic_stream_handle.html" title="windows::basic_stream_handle::basic_stream_handle"> |
| </head> |
| <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> |
| <table cellpadding="2" width="100%"><tr> |
| <td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../boost.png"></td> |
| <td align="center"><a href="../../../../../index.html">Home</a></td> |
| <td align="center"><a href="../../../../../libs/libraries.htm">Libraries</a></td> |
| <td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> |
| <td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> |
| <td align="center"><a href="../../../../../more/index.htm">More</a></td> |
| </tr></table> |
| <hr> |
| <div class="spirit-nav"> |
| <a accesskey="p" href="async_read_some.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../windows__basic_stream_handle.html"><img src="../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../boost_asio.html"><img src="../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="basic_stream_handle.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a> |
| </div> |
| <div class="section"> |
| <div class="titlepage"><div><div><h4 class="title"> |
| <a name="boost_asio.reference.windows__basic_stream_handle.async_write_some"></a><a class="link" href="async_write_some.html" title="windows::basic_stream_handle::async_write_some">windows::basic_stream_handle::async_write_some</a> |
| </h4></div></div></div> |
| <p> |
| <a class="indexterm" name="id1379392"></a> |
| Start an asynchronous write. |
| </p> |
| <pre class="programlisting"><span class="keyword">template</span><span class="special"><</span> |
| <span class="keyword">typename</span> <a class="link" href="../ConstBufferSequence.html" title="Constant buffer sequence requirements">ConstBufferSequence</a><span class="special">,</span> |
| <span class="keyword">typename</span> <a class="link" href="../WriteHandler.html" title="Write handler requirements">WriteHandler</a><span class="special">></span> |
| <span class="keyword">void</span> <span class="identifier">async_write_some</span><span class="special">(</span> |
| <span class="keyword">const</span> <span class="identifier">ConstBufferSequence</span> <span class="special">&</span> <span class="identifier">buffers</span><span class="special">,</span> |
| <span class="identifier">WriteHandler</span> <span class="identifier">handler</span><span class="special">);</span> |
| </pre> |
| <p> |
| This function is used to asynchronously write data to the stream handle. |
| The function call always returns immediately. |
| </p> |
| <a name="boost_asio.reference.windows__basic_stream_handle.async_write_some.parameters"></a><h6> |
| <a name="id1379527"></a> |
| <a class="link" href="async_write_some.html#boost_asio.reference.windows__basic_stream_handle.async_write_some.parameters">Parameters</a> |
| </h6> |
| <div class="variablelist"> |
| <p class="title"><b></b></p> |
| <dl> |
| <dt><span class="term">buffers</span></dt> |
| <dd><p> |
| One or more data buffers to be written to the handle. Although the |
| buffers object may be copied as necessary, ownership of the underlying |
| memory blocks is retained by the caller, which must guarantee that |
| they remain valid until the handler is called. |
| </p></dd> |
| <dt><span class="term">handler</span></dt> |
| <dd> |
| <p> |
| The handler to be called when the write operation completes. Copies |
| will be made of the handler as required. The function signature of |
| the handler must be: |
| </p> |
| <pre class="programlisting"><span class="keyword">void</span> <span class="identifier">handler</span><span class="special">(</span> |
| <span class="keyword">const</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">system</span><span class="special">::</span><span class="identifier">error_code</span><span class="special">&</span> <span class="identifier">error</span><span class="special">,</span> <span class="comment">// Result of operation. |
| </span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">bytes_transferred</span> <span class="comment">// Number of bytes written. |
| </span><span class="special">);</span> |
| </pre> |
| <p> |
| Regardless of whether the asynchronous operation completes immediately |
| or not, the handler will not be invoked from within this function. |
| Invocation of the handler will be performed in a manner equivalent |
| to using <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">asio</span><span class="special">::</span><span class="identifier">io_service</span><span class="special">::</span><span class="identifier">post</span><span class="special">()</span></code>. |
| </p> |
| </dd> |
| </dl> |
| </div> |
| <a name="boost_asio.reference.windows__basic_stream_handle.async_write_some.remarks"></a><h6> |
| <a name="id1379737"></a> |
| <a class="link" href="async_write_some.html#boost_asio.reference.windows__basic_stream_handle.async_write_some.remarks">Remarks</a> |
| </h6> |
| <p> |
| The write operation may not transmit all of the data to the peer. Consider |
| using the <a class="link" href="../async_write.html" title="async_write"><code class="computeroutput"><span class="identifier">async_write</span></code></a> function if you need |
| to ensure that all data is written before the asynchronous operation completes. |
| </p> |
| <a name="boost_asio.reference.windows__basic_stream_handle.async_write_some.example"></a><h6> |
| <a name="id1379784"></a> |
| <a class="link" href="async_write_some.html#boost_asio.reference.windows__basic_stream_handle.async_write_some.example">Example</a> |
| </h6> |
| <p> |
| To write a single data buffer use the <a class="link" href="../buffer.html" title="buffer"><code class="computeroutput"><span class="identifier">buffer</span></code></a> function as follows: |
| </p> |
| <pre class="programlisting"><span class="identifier">handle</span><span class="special">.</span><span class="identifier">async_write_some</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">asio</span><span class="special">::</span><span class="identifier">buffer</span><span class="special">(</span><span class="identifier">data</span><span class="special">,</span> <span class="identifier">size</span><span class="special">),</span> <span class="identifier">handler</span><span class="special">);</span> |
| </pre> |
| <p> |
| See the <a class="link" href="../buffer.html" title="buffer"><code class="computeroutput"><span class="identifier">buffer</span></code></a> |
| documentation for information on writing multiple buffers in one go, and |
| how to use it with arrays, boost::array or std::vector. |
| </p> |
| </div> |
| <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> |
| <td align="left"></td> |
| <td align="right"><div class="copyright-footer">Copyright © 2003 - 2010 Christopher M. Kohlhoff<p> |
| Distributed under the Boost Software License, Version 1.0. (See accompanying |
| file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) |
| </p> |
| </div></td> |
| </tr></table> |
| <hr> |
| <div class="spirit-nav"> |
| <a accesskey="p" href="async_read_some.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../windows__basic_stream_handle.html"><img src="../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../boost_asio.html"><img src="../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="basic_stream_handle.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a> |
| </div> |
| </body> |
| </html> |
