1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>basic_socket_iostream::error</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="../basic_socket_iostream.html" title="basic_socket_iostream"> 9<link rel="prev" href="endpoint_type.html" title="basic_socket_iostream::endpoint_type"> 10<link rel="next" href="expires_after.html" title="basic_socket_iostream::expires_after"> 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="endpoint_type.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../basic_socket_iostream.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="expires_after.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.basic_socket_iostream.error"></a><a class="link" href="error.html" title="basic_socket_iostream::error">basic_socket_iostream::error</a> 28</h4></div></div></div> 29<p> 30 <a class="indexterm" name="boost_asio.indexterm.basic_socket_iostream.error"></a> 31Get 32 the last error associated with the stream. 33 </p> 34<pre class="programlisting">const boost::system::error_code & error() const; 35</pre> 36<h6> 37<a name="boost_asio.reference.basic_socket_iostream.error.h0"></a> 38 <span class="phrase"><a name="boost_asio.reference.basic_socket_iostream.error.return_value"></a></span><a class="link" href="error.html#boost_asio.reference.basic_socket_iostream.error.return_value">Return 39 Value</a> 40 </h6> 41<p> 42 An <code class="computeroutput">error_code</code> corresponding to the last error from the stream. 43 </p> 44<h6> 45<a name="boost_asio.reference.basic_socket_iostream.error.h1"></a> 46 <span class="phrase"><a name="boost_asio.reference.basic_socket_iostream.error.example"></a></span><a class="link" href="error.html#boost_asio.reference.basic_socket_iostream.error.example">Example</a> 47 </h6> 48<p> 49 To print the error associated with a failure to establish a connection: 50 </p> 51<pre class="programlisting">tcp::iostream s("www.boost.org", "http"); 52if (!s) 53{ 54 std::cout << "Error: " << s.error().message() << std::endl; 55} 56</pre> 57</div> 58<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 59<td align="left"></td> 60<td align="right"><div class="copyright-footer">Copyright © 2003-2020 Christopher M. 61 Kohlhoff<p> 62 Distributed under the Boost Software License, Version 1.0. (See accompanying 63 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>) 64 </p> 65</div></td> 66</tr></table> 67<hr> 68<div class="spirit-nav"> 69<a accesskey="p" href="endpoint_type.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../basic_socket_iostream.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="expires_after.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a> 70</div> 71</body> 72</html> 73
