1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>socket_base::bytes_readable</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="../socket_base.html" title="socket_base"> 9<link rel="prev" href="broadcast.html" title="socket_base::broadcast"> 10<link rel="next" href="debug.html" title="socket_base::debug"> 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="broadcast.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../socket_base.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="debug.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.socket_base.bytes_readable"></a><a class="link" href="bytes_readable.html" title="socket_base::bytes_readable">socket_base::bytes_readable</a> 28</h4></div></div></div> 29<p> 30 <a class="indexterm" name="boost_asio.indexterm.socket_base.bytes_readable"></a> 31IO 32 control command to get the amount of data that can be read without blocking. 33 </p> 34<pre class="programlisting">typedef implementation_defined bytes_readable; 35</pre> 36<p> 37 Implements the FIONREAD IO control command. 38 </p> 39<h6> 40<a name="boost_asio.reference.socket_base.bytes_readable.h0"></a> 41 <span class="phrase"><a name="boost_asio.reference.socket_base.bytes_readable.example"></a></span><a class="link" href="bytes_readable.html#boost_asio.reference.socket_base.bytes_readable.example">Example</a> 42 </h6> 43<pre class="programlisting">boost::asio::ip::tcp::socket socket(my_context); 44... 45boost::asio::socket_base::bytes_readable command(true); 46socket.io_control(command); 47std::size_t bytes_readable = command.get(); 48</pre> 49<h6> 50<a name="boost_asio.reference.socket_base.bytes_readable.h1"></a> 51 <span class="phrase"><a name="boost_asio.reference.socket_base.bytes_readable.requirements"></a></span><a class="link" href="bytes_readable.html#boost_asio.reference.socket_base.bytes_readable.requirements">Requirements</a> 52 </h6> 53<p> 54 <span class="emphasis"><em>Header: </em></span><code class="literal">boost/asio/socket_base.hpp</code> 55 </p> 56<p> 57 <span class="emphasis"><em>Convenience header: </em></span><code class="literal">boost/asio.hpp</code> 58 </p> 59</div> 60<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 61<td align="left"></td> 62<td align="right"><div class="copyright-footer">Copyright © 2003-2020 Christopher M. 63 Kohlhoff<p> 64 Distributed under the Boost Software License, Version 1.0. (See accompanying 65 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>) 66 </p> 67</div></td> 68</tr></table> 69<hr> 70<div class="spirit-nav"> 71<a accesskey="p" href="broadcast.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../socket_base.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="debug.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a> 72</div> 73</body> 74</html> 75
