1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>basic_raw_socket::async_send_to (2 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="../async_send_to.html" title="basic_raw_socket::async_send_to"> 9<link rel="prev" href="overload1.html" title="basic_raw_socket::async_send_to (1 of 2 overloads)"> 10<link rel="next" href="../async_wait.html" title="basic_raw_socket::async_wait"> 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_send_to.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="../async_wait.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_raw_socket.async_send_to.overload2"></a><a class="link" href="overload2.html" title="basic_raw_socket::async_send_to (2 of 2 overloads)">basic_raw_socket::async_send_to 28 (2 of 2 overloads)</a> 29</h5></div></div></div> 30<p> 31 Start an asynchronous send. 32 </p> 33<pre class="programlisting">template< 34 typename <a class="link" href="../../ConstBufferSequence.html" title="Constant buffer sequence requirements">ConstBufferSequence</a>, 35 typename <a class="link" href="../../WriteHandler.html" title="Write handler requirements">WriteHandler</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_send_to( 37 const ConstBufferSequence & buffers, 38 const endpoint_type & destination, 39 socket_base::message_flags flags, 40 WriteHandler && handler = <a class="link" href="../../asynchronous_operations.html#boost_asio.reference.asynchronous_operations.default_completion_tokens"><span class="emphasis"><em>DEFAULT</em></span></a>); 41</pre> 42<p> 43 This function is used to asynchronously send raw data to the specified 44 remote endpoint. The function call always returns immediately. 45 </p> 46<h6> 47<a name="boost_asio.reference.basic_raw_socket.async_send_to.overload2.h0"></a> 48 <span class="phrase"><a name="boost_asio.reference.basic_raw_socket.async_send_to.overload2.parameters"></a></span><a class="link" href="overload2.html#boost_asio.reference.basic_raw_socket.async_send_to.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">buffers</span></dt> 54<dd><p> 55 One or more data buffers to be sent to the remote endpoint. Although 56 the buffers object may be copied as necessary, ownership of the 57 underlying memory blocks is retained by the caller, which must 58 guarantee that they remain valid until the handler is called. 59 </p></dd> 60<dt><span class="term">flags</span></dt> 61<dd><p> 62 Flags specifying how the send call is to be made. 63 </p></dd> 64<dt><span class="term">destination</span></dt> 65<dd><p> 66 The remote endpoint to which the data will be sent. Copies will 67 be made of the endpoint as required. 68 </p></dd> 69<dt><span class="term">handler</span></dt> 70<dd> 71<p> 72 The handler to be called when the send operation completes. Copies 73 will be made of the handler as required. The function signature 74 of the handler must be: 75</p> 76<pre class="programlisting">void handler( 77 const boost::system::error_code& error, // Result of operation. 78 std::size_t bytes_transferred // Number of bytes sent. 79); 80</pre> 81<p> 82 Regardless of whether the asynchronous operation completes immediately 83 or not, the handler will not be invoked from within this function. 84 On immediate completion, invocation of the handler will be performed 85 in a manner equivalent to using <a class="link" href="../../post.html" title="post"><code class="computeroutput">post</code></a>. 86 </p> 87</dd> 88</dl> 89</div> 90</div> 91<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 92<td align="left"></td> 93<td align="right"><div class="copyright-footer">Copyright © 2003-2020 Christopher M. 94 Kohlhoff<p> 95 Distributed under the Boost Software License, Version 1.0. (See accompanying 96 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>) 97 </p> 98</div></td> 99</tr></table> 100<hr> 101<div class="spirit-nav"> 102<a accesskey="p" href="overload1.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../async_send_to.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="../async_wait.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> 103</div> 104</body> 105</html> 106
