1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>ip::multicast::leave_group</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="../reference.html" title="Reference"> 9<link rel="prev" href="ip__multicast__join_group.html" title="ip::multicast::join_group"> 10<link rel="next" href="ip__multicast__outbound_interface.html" title="ip::multicast::outbound_interface"> 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="ip__multicast__join_group.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../reference.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="ip__multicast__outbound_interface.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="section"> 26<div class="titlepage"><div><div><h3 class="title"> 27<a name="boost_asio.reference.ip__multicast__leave_group"></a><a class="link" href="ip__multicast__leave_group.html" title="ip::multicast::leave_group">ip::multicast::leave_group</a> 28</h3></div></div></div> 29<p> 30 <a class="indexterm" name="boost_asio.indexterm.ip__multicast__leave_group"></a> 31Socket 32 option to leave a multicast group on a specified interface. 33 </p> 34<pre class="programlisting">typedef implementation_defined leave_group; 35</pre> 36<p> 37 Implements the IPPROTO_IP/IP_DROP_MEMBERSHIP socket option. 38 </p> 39<h5> 40<a name="boost_asio.reference.ip__multicast__leave_group.h0"></a> 41 <span class="phrase"><a name="boost_asio.reference.ip__multicast__leave_group.examples"></a></span><a class="link" href="ip__multicast__leave_group.html#boost_asio.reference.ip__multicast__leave_group.examples">Examples</a> 42 </h5> 43<p> 44 Setting the option to leave a multicast group: 45 </p> 46<pre class="programlisting">boost::asio::ip::udp::socket socket(my_context); 47... 48boost::asio::ip::address multicast_address = 49 boost::asio::ip::address::from_string("225.0.0.1"); 50boost::asio::ip::multicast::leave_group option(multicast_address); 51socket.set_option(option); 52</pre> 53<h5> 54<a name="boost_asio.reference.ip__multicast__leave_group.h1"></a> 55 <span class="phrase"><a name="boost_asio.reference.ip__multicast__leave_group.requirements"></a></span><a class="link" href="ip__multicast__leave_group.html#boost_asio.reference.ip__multicast__leave_group.requirements">Requirements</a> 56 </h5> 57<p> 58 <span class="emphasis"><em>Header: </em></span><code class="literal">boost/asio/ip/multicast.hpp</code> 59 </p> 60<p> 61 <span class="emphasis"><em>Convenience header: </em></span><code class="literal">boost/asio.hpp</code> 62 </p> 63</div> 64<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 65<td align="left"></td> 66<td align="right"><div class="copyright-footer">Copyright © 2003-2020 Christopher M. 67 Kohlhoff<p> 68 Distributed under the Boost Software License, Version 1.0. (See accompanying 69 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>) 70 </p> 71</div></td> 72</tr></table> 73<hr> 74<div class="spirit-nav"> 75<a accesskey="p" href="ip__multicast__join_group.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../reference.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="ip__multicast__outbound_interface.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 76</div> 77</body> 78</html> 79
