1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>basic_stream_socket::available (1 of 2 overloads)</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="../available.html" title="basic_stream_socket::available"> 9<link rel="prev" href="../available.html" title="basic_stream_socket::available"> 10<link rel="next" href="overload2.html" title="basic_stream_socket::available (2 of 2 overloads)"> 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="../available.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../available.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="overload2.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="section"> 26<div class="titlepage"><div><div><h5 class="title"> 27<a name="boost_asio.reference.basic_stream_socket.available.overload1"></a><a class="link" href="overload1.html" title="basic_stream_socket::available (1 of 2 overloads)">basic_stream_socket::available 28 (1 of 2 overloads)</a> 29</h5></div></div></div> 30<p> 31 <span class="emphasis"><em>Inherited from basic_socket.</em></span> 32 </p> 33<p> 34 Determine the number of bytes available for reading. 35 </p> 36<pre class="programlisting">std::size_t available() const; 37</pre> 38<p> 39 This function is used to determine the number of bytes that may be read 40 without blocking. 41 </p> 42<h6> 43<a name="boost_asio.reference.basic_stream_socket.available.overload1.h0"></a> 44 <span class="phrase"><a name="boost_asio.reference.basic_stream_socket.available.overload1.return_value"></a></span><a class="link" href="overload1.html#boost_asio.reference.basic_stream_socket.available.overload1.return_value">Return 45 Value</a> 46 </h6> 47<p> 48 The number of bytes that may be read without blocking, or 0 if an error 49 occurs. 50 </p> 51<h6> 52<a name="boost_asio.reference.basic_stream_socket.available.overload1.h1"></a> 53 <span class="phrase"><a name="boost_asio.reference.basic_stream_socket.available.overload1.exceptions"></a></span><a class="link" href="overload1.html#boost_asio.reference.basic_stream_socket.available.overload1.exceptions">Exceptions</a> 54 </h6> 55<div class="variablelist"> 56<p class="title"><b></b></p> 57<dl class="variablelist"> 58<dt><span class="term">boost::system::system_error</span></dt> 59<dd><p> 60 Thrown on failure. 61 </p></dd> 62</dl> 63</div> 64</div> 65<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 66<td align="left"></td> 67<td align="right"><div class="copyright-footer">Copyright © 2003-2020 Christopher M. 68 Kohlhoff<p> 69 Distributed under the Boost Software License, Version 1.0. (See accompanying 70 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>) 71 </p> 72</div></td> 73</tr></table> 74<hr> 75<div class="spirit-nav"> 76<a accesskey="p" href="../available.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../available.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="overload2.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> 77</div> 78</body> 79</html> 80
