1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>basic_socket_acceptor::async_accept (2 of 8 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="../async_accept.html" title="basic_socket_acceptor::async_accept"> 9<link rel="prev" href="overload1.html" title="basic_socket_acceptor::async_accept (1 of 8 overloads)"> 10<link rel="next" href="overload3.html" title="basic_socket_acceptor::async_accept (3 of 8 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="overload1.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../async_accept.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="overload3.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_socket_acceptor.async_accept.overload2"></a><a class="link" href="overload2.html" title="basic_socket_acceptor::async_accept (2 of 8 overloads)">basic_socket_acceptor::async_accept 28 (2 of 8 overloads)</a> 29</h5></div></div></div> 30<p> 31 Start an asynchronous accept. 32 </p> 33<pre class="programlisting">template< 34 typename <a class="link" href="../../Executor1.html" title="Executor requirements">Executor1</a>, 35 typename <a class="link" href="../../AcceptHandler.html" title="Accept handler requirements">AcceptHandler</a> = <a class="link" href="../../asynchronous_operations.html#boost_asio.reference.asynchronous_operations.default_completion_tokens"><span class="emphasis"><em>DEFAULT</em></span></a>> 36<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_accept( 37 basic_socket< protocol_type, Executor1 > & peer, 38 endpoint_type & peer_endpoint, 39 AcceptHandler && 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 accept a new connection into 43 a socket, and additionally obtain the endpoint of the remote peer. The 44 function call always returns immediately. 45 </p> 46<h6> 47<a name="boost_asio.reference.basic_socket_acceptor.async_accept.overload2.h0"></a> 48 <span class="phrase"><a name="boost_asio.reference.basic_socket_acceptor.async_accept.overload2.parameters"></a></span><a class="link" href="overload2.html#boost_asio.reference.basic_socket_acceptor.async_accept.overload2.parameters">Parameters</a> 49 </h6> 50<div class="variablelist"> 51<p class="title"><b></b></p> 52<dl class="variablelist"> 53<dt><span class="term">peer</span></dt> 54<dd><p> 55 The socket into which the new connection will be accepted. Ownership 56 of the peer object is retained by the caller, which must guarantee 57 that it is valid until the handler is called. 58 </p></dd> 59<dt><span class="term">peer_endpoint</span></dt> 60<dd><p> 61 An endpoint object into which the endpoint of the remote peer will 62 be written. Ownership of the peer_endpoint object is retained by 63 the caller, which must guarantee that it is valid until the handler 64 is called. 65 </p></dd> 66<dt><span class="term">handler</span></dt> 67<dd> 68<p> 69 The handler to be called when the accept operation completes. Copies 70 will be made of the handler as required. The function signature 71 of the handler must be: 72</p> 73<pre class="programlisting">void handler( 74 const boost::system::error_code& error // Result of operation. 75); 76</pre> 77<p> 78 Regardless of whether the asynchronous operation completes immediately 79 or not, the handler will not be invoked from within this function. 80 On immediate completion, invocation of the handler will be performed 81 in a manner equivalent to using <a class="link" href="../../post.html" title="post"><code class="computeroutput">post</code></a>. 82 </p> 83</dd> 84</dl> 85</div> 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="overload1.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../async_accept.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="overload3.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> 99</div> 100</body> 101</html> 102
