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26 <div class="titlepage"><div><div><h4 class="title">
27 <a name="boost_asio.reference.basic_stream_socket.async_connect"></a><a class="link" href="async_connect.html" title="basic_stream_socket::async_connect">basic_stream_socket::async_connect</a>
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30 <span class="emphasis"><em>Inherited from basic_socket.</em></span>
33 <a class="indexterm" name="boost_asio.indexterm.basic_stream_socket.async_connect"></a>
35 an asynchronous connect.
37 <pre class="programlisting">template<
38 typename <a class="link" href="../ConnectHandler.html" title="Connect handler requirements">ConnectHandler</a> = <a class="link" href="../asynchronous_operations.html#boost_asio.reference.asynchronous_operations.default_completion_tokens"><span class="emphasis"><em>DEFAULT</em></span></a>>
39 <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_connect(
40 const endpoint_type & peer_endpoint,
41 ConnectHandler && handler = <a class="link" href="../asynchronous_operations.html#boost_asio.reference.asynchronous_operations.default_completion_tokens"><span class="emphasis"><em>DEFAULT</em></span></a>);
44 This function is used to asynchronously connect a socket to the specified
45 remote endpoint. The function call always returns immediately.
48 The socket is automatically opened if it is not already open. If the connect
49 fails, and the socket was automatically opened, the socket is not returned
53 <a name="boost_asio.reference.basic_stream_socket.async_connect.h0"></a>
54 <span class="phrase"><a name="boost_asio.reference.basic_stream_socket.async_connect.parameters"></a></span><a class="link" href="async_connect.html#boost_asio.reference.basic_stream_socket.async_connect.parameters">Parameters</a>
56 <div class="variablelist">
57 <p class="title"><b></b></p>
58 <dl class="variablelist">
59 <dt><span class="term">peer_endpoint</span></dt>
61 The remote endpoint to which the socket will be connected. Copies
62 will be made of the endpoint object as required.
64 <dt><span class="term">handler</span></dt>
67 The handler to be called when the connection operation completes.
68 Copies will be made of the handler as required. The function signature
69 of the handler must be:
71 <pre class="programlisting">void handler(
72 const boost::system::error_code& error // Result of operation
76 Regardless of whether the asynchronous operation completes immediately
77 or not, the handler will not be invoked from within this function.
78 On immediate completion, invocation of the handler will be performed
79 in a manner equivalent to using <a class="link" href="../post.html" title="post"><code class="computeroutput">post</code></a>.
85 <a name="boost_asio.reference.basic_stream_socket.async_connect.h1"></a>
86 <span class="phrase"><a name="boost_asio.reference.basic_stream_socket.async_connect.example"></a></span><a class="link" href="async_connect.html#boost_asio.reference.basic_stream_socket.async_connect.example">Example</a>
88 <pre class="programlisting">void connect_handler(const boost::system::error_code& error)
98 boost::asio::ip::tcp::socket socket(my_context);
99 boost::asio::ip::tcp::endpoint endpoint(
100 boost::asio::ip::address::from_string("1.2.3.4"), 12345);
101 socket.async_connect(endpoint, connect_handler);
104 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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106 <td align="right"><div class="copyright-footer">Copyright © 2003-2019 Christopher M. Kohlhoff<p>
107 Distributed under the Boost Software License, Version 1.0. (See accompanying
108 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>)
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