1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>ssl::stream::async_write_some</title> 5<link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="../../../boost_asio.html" title="Boost.Asio"> 8<link rel="up" href="../ssl__stream.html" title="ssl::stream"> 9<link rel="prev" href="async_shutdown.html" title="ssl::stream::async_shutdown"> 10<link rel="next" href="executor_type.html" title="ssl::stream::executor_type"> 11</head> 12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13<table cellpadding="2" width="100%"><tr> 14<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../boost.png"></td> 15<td align="center"><a href="../../../../../index.html">Home</a></td> 16<td align="center"><a href="../../../../../libs/libraries.htm">Libraries</a></td> 17<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 18<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 19<td align="center"><a href="../../../../../more/index.htm">More</a></td> 20</tr></table> 21<hr> 22<div class="spirit-nav"> 23<a accesskey="p" href="async_shutdown.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../ssl__stream.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="executor_type.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="section"> 26<div class="titlepage"><div><div><h4 class="title"> 27<a name="boost_asio.reference.ssl__stream.async_write_some"></a><a class="link" href="async_write_some.html" title="ssl::stream::async_write_some">ssl::stream::async_write_some</a> 28</h4></div></div></div> 29<p> 30 <a class="indexterm" name="boost_asio.indexterm.ssl__stream.async_write_some"></a> 31Start 32 an asynchronous write. 33 </p> 34<pre class="programlisting">template< 35 typename <a class="link" href="../ConstBufferSequence.html" title="Constant buffer sequence requirements">ConstBufferSequence</a>, 36 typename <a class="link" href="../WriteHandler.html" title="Write handler requirements">WriteHandler</a> = <a class="link" href="../asynchronous_operations.html#boost_asio.reference.asynchronous_operations.default_completion_tokens"><span class="emphasis"><em>DEFAULT</em></span></a>> 37<a class="link" href="../asynchronous_operations.html#boost_asio.reference.asynchronous_operations.automatic_deduction_of_initiating_function_return_type"><span class="emphasis"><em>DEDUCED</em></span></a> async_write_some( 38 const ConstBufferSequence & buffers, 39 WriteHandler && handler = <a class="link" href="../asynchronous_operations.html#boost_asio.reference.asynchronous_operations.default_completion_tokens"><span class="emphasis"><em>DEFAULT</em></span></a>); 40</pre> 41<p> 42 This function is used to asynchronously write one or more bytes of data 43 to the stream. The function call always returns immediately. 44 </p> 45<h6> 46<a name="boost_asio.reference.ssl__stream.async_write_some.h0"></a> 47 <span class="phrase"><a name="boost_asio.reference.ssl__stream.async_write_some.parameters"></a></span><a class="link" href="async_write_some.html#boost_asio.reference.ssl__stream.async_write_some.parameters">Parameters</a> 48 </h6> 49<div class="variablelist"> 50<p class="title"><b></b></p> 51<dl class="variablelist"> 52<dt><span class="term">buffers</span></dt> 53<dd><p> 54 The data to be written to the stream. Although the buffers object 55 may be copied as necessary, ownership of the underlying buffers is 56 retained by the caller, which must guarantee that they remain valid 57 until the handler is called. 58 </p></dd> 59<dt><span class="term">handler</span></dt> 60<dd> 61<p> 62 The handler to be called when the write operation completes. Copies 63 will be made of the handler as required. The equivalent function 64 signature of the handler must be: 65</p> 66<pre class="programlisting">void handler( 67 const boost::system::error_code& error, // Result of operation. 68 std::size_t bytes_transferred // Number of bytes written. 69); 70</pre> 71<p> 72 </p> 73</dd> 74</dl> 75</div> 76<h6> 77<a name="boost_asio.reference.ssl__stream.async_write_some.h1"></a> 78 <span class="phrase"><a name="boost_asio.reference.ssl__stream.async_write_some.remarks"></a></span><a class="link" href="async_write_some.html#boost_asio.reference.ssl__stream.async_write_some.remarks">Remarks</a> 79 </h6> 80<p> 81 The async_write_some operation may not transmit all of the data to the 82 peer. Consider using the <a class="link" href="../async_write.html" title="async_write"><code class="computeroutput">async_write</code></a> 83 function if you need to ensure that all data is written before the asynchronous 84 operation completes. 85 </p> 86</div> 87<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 88<td align="left"></td> 89<td align="right"><div class="copyright-footer">Copyright © 2003-2020 Christopher M. 90 Kohlhoff<p> 91 Distributed under the Boost Software License, Version 1.0. (See accompanying 92 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>) 93 </p> 94</div></td> 95</tr></table> 96<hr> 97<div class="spirit-nav"> 98<a accesskey="p" href="async_shutdown.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../ssl__stream.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="executor_type.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a> 99</div> 100</body> 101</html> 102
