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26 <div class="titlepage"><div><div><h3 class="title">
27 <a name="boost_asio.reference.async_connect"></a><a class="link" href="async_connect.html" title="async_connect">async_connect</a>
28 </h3></div></div></div>
29 <p>
30         <a class="indexterm" name="boost_asio.indexterm.async_connect"></a> 
31 The <code class="computeroutput">async_connect</code>
32         function is a composed asynchronous operation that establishes a socket connection
33         by trying each endpoint in a sequence.
34       </p>
35 <p>
36         Asynchronously establishes a socket connection by trying each endpoint in
37         a sequence.
38       </p>
39 <pre class="programlisting">template&lt;
40     typename <a class="link" href="Protocol.html" title="Protocol requirements">Protocol</a>,
41     typename <a class="link" href="Executor1.html" title="Executor requirements">Executor</a>,
42     typename <a class="link" href="EndpointSequence.html" title="Endpoint sequence requirements">EndpointSequence</a>,
43     typename <a class="link" href="RangeConnectHandler.html" title="Range connect handler requirements">RangeConnectHandler</a> = <a class="link" href="asynchronous_operations.html#boost_asio.reference.asynchronous_operations.default_completion_tokens"><span class="emphasis"><em>DEFAULT</em></span></a>&gt;
44 <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> <a class="link" href="async_connect/overload1.html" title="async_connect (1 of 6 overloads)">async_connect</a>(
45     basic_socket&lt; Protocol, Executor &gt; &amp; s,
46     const EndpointSequence &amp; endpoints,
47     RangeConnectHandler &amp;&amp; handler = <a class="link" href="asynchronous_operations.html#boost_asio.reference.asynchronous_operations.default_completion_tokens"><span class="emphasis"><em>DEFAULT</em></span></a>,
48     typename enable_if&lt; is_endpoint_sequence&lt; EndpointSequence &gt;::value &gt;::type *  = 0);
49   <span class="emphasis"><em>&#187; <a class="link" href="async_connect/overload1.html" title="async_connect (1 of 6 overloads)">more...</a></em></span>
50 </pre>
51 <p>
52         (Deprecated: Use range overload.) Asynchronously establishes a socket connection
53         by trying each endpoint in a sequence.
54       </p>
55 <pre class="programlisting">template&lt;
56     typename <a class="link" href="Protocol.html" title="Protocol requirements">Protocol</a>,
57     typename <a class="link" href="Executor1.html" title="Executor requirements">Executor</a>,
58     typename Iterator,
59     typename <a class="link" href="IteratorConnectHandler.html" title="Iterator connect handler requirements">IteratorConnectHandler</a> = <a class="link" href="asynchronous_operations.html#boost_asio.reference.asynchronous_operations.default_completion_tokens"><span class="emphasis"><em>DEFAULT</em></span></a>&gt;
60 <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> <a class="link" href="async_connect/overload2.html" title="async_connect (2 of 6 overloads)">async_connect</a>(
61     basic_socket&lt; Protocol, Executor &gt; &amp; s,
62     Iterator begin,
63     IteratorConnectHandler &amp;&amp; handler = <a class="link" href="asynchronous_operations.html#boost_asio.reference.asynchronous_operations.default_completion_tokens"><span class="emphasis"><em>DEFAULT</em></span></a>,
64     typename enable_if&lt;!is_endpoint_sequence&lt; Iterator &gt;::value &gt;::type *  = 0);
65   <span class="emphasis"><em>&#187; <a class="link" href="async_connect/overload2.html" title="async_connect (2 of 6 overloads)">more...</a></em></span>
66 </pre>
67 <p>
68         Asynchronously establishes a socket connection by trying each endpoint in
69         a sequence.
70       </p>
71 <pre class="programlisting">template&lt;
72     typename <a class="link" href="Protocol.html" title="Protocol requirements">Protocol</a>,
73     typename <a class="link" href="Executor1.html" title="Executor requirements">Executor</a>,
74     typename Iterator,
75     typename <a class="link" href="IteratorConnectHandler.html" title="Iterator connect handler requirements">IteratorConnectHandler</a> = <a class="link" href="asynchronous_operations.html#boost_asio.reference.asynchronous_operations.default_completion_tokens"><span class="emphasis"><em>DEFAULT</em></span></a>&gt;
76 <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> <a class="link" href="async_connect/overload3.html" title="async_connect (3 of 6 overloads)">async_connect</a>(
77     basic_socket&lt; Protocol, Executor &gt; &amp; s,
78     Iterator begin,
79     Iterator end,
80     IteratorConnectHandler &amp;&amp; handler = <a class="link" href="asynchronous_operations.html#boost_asio.reference.asynchronous_operations.default_completion_tokens"><span class="emphasis"><em>DEFAULT</em></span></a>);
81   <span class="emphasis"><em>&#187; <a class="link" href="async_connect/overload3.html" title="async_connect (3 of 6 overloads)">more...</a></em></span>
82
83 template&lt;
84     typename <a class="link" href="Protocol.html" title="Protocol requirements">Protocol</a>,
85     typename <a class="link" href="Executor1.html" title="Executor requirements">Executor</a>,
86     typename <a class="link" href="EndpointSequence.html" title="Endpoint sequence requirements">EndpointSequence</a>,
87     typename <a class="link" href="ConnectCondition.html" title="Connect condition requirements">ConnectCondition</a>,
88     typename <a class="link" href="RangeConnectHandler.html" title="Range connect handler requirements">RangeConnectHandler</a> = <a class="link" href="asynchronous_operations.html#boost_asio.reference.asynchronous_operations.default_completion_tokens"><span class="emphasis"><em>DEFAULT</em></span></a>&gt;
89 <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> <a class="link" href="async_connect/overload4.html" title="async_connect (4 of 6 overloads)">async_connect</a>(
90     basic_socket&lt; Protocol, Executor &gt; &amp; s,
91     const EndpointSequence &amp; endpoints,
92     ConnectCondition connect_condition,
93     RangeConnectHandler &amp;&amp; handler = <a class="link" href="asynchronous_operations.html#boost_asio.reference.asynchronous_operations.default_completion_tokens"><span class="emphasis"><em>DEFAULT</em></span></a>,
94     typename enable_if&lt; is_endpoint_sequence&lt; EndpointSequence &gt;::value &gt;::type *  = 0);
95   <span class="emphasis"><em>&#187; <a class="link" href="async_connect/overload4.html" title="async_connect (4 of 6 overloads)">more...</a></em></span>
96 </pre>
97 <p>
98         (Deprecated: Use range overload.) Asynchronously establishes a socket connection
99         by trying each endpoint in a sequence.
100       </p>
101 <pre class="programlisting">template&lt;
102     typename <a class="link" href="Protocol.html" title="Protocol requirements">Protocol</a>,
103     typename <a class="link" href="Executor1.html" title="Executor requirements">Executor</a>,
104     typename Iterator,
105     typename <a class="link" href="ConnectCondition.html" title="Connect condition requirements">ConnectCondition</a>,
106     typename <a class="link" href="IteratorConnectHandler.html" title="Iterator connect handler requirements">IteratorConnectHandler</a> = <a class="link" href="asynchronous_operations.html#boost_asio.reference.asynchronous_operations.default_completion_tokens"><span class="emphasis"><em>DEFAULT</em></span></a>&gt;
107 <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> <a class="link" href="async_connect/overload5.html" title="async_connect (5 of 6 overloads)">async_connect</a>(
108     basic_socket&lt; Protocol, Executor &gt; &amp; s,
109     Iterator begin,
110     ConnectCondition connect_condition,
111     IteratorConnectHandler &amp;&amp; handler = <a class="link" href="asynchronous_operations.html#boost_asio.reference.asynchronous_operations.default_completion_tokens"><span class="emphasis"><em>DEFAULT</em></span></a>,
112     typename enable_if&lt;!is_endpoint_sequence&lt; Iterator &gt;::value &gt;::type *  = 0);
113   <span class="emphasis"><em>&#187; <a class="link" href="async_connect/overload5.html" title="async_connect (5 of 6 overloads)">more...</a></em></span>
114 </pre>
115 <p>
116         Asynchronously establishes a socket connection by trying each endpoint in
117         a sequence.
118       </p>
119 <pre class="programlisting">template&lt;
120     typename <a class="link" href="Protocol.html" title="Protocol requirements">Protocol</a>,
121     typename <a class="link" href="Executor1.html" title="Executor requirements">Executor</a>,
122     typename Iterator,
123     typename <a class="link" href="ConnectCondition.html" title="Connect condition requirements">ConnectCondition</a>,
124     typename <a class="link" href="IteratorConnectHandler.html" title="Iterator connect handler requirements">IteratorConnectHandler</a> = <a class="link" href="asynchronous_operations.html#boost_asio.reference.asynchronous_operations.default_completion_tokens"><span class="emphasis"><em>DEFAULT</em></span></a>&gt;
125 <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> <a class="link" href="async_connect/overload6.html" title="async_connect (6 of 6 overloads)">async_connect</a>(
126     basic_socket&lt; Protocol, Executor &gt; &amp; s,
127     Iterator begin,
128     Iterator end,
129     ConnectCondition connect_condition,
130     IteratorConnectHandler &amp;&amp; handler = <a class="link" href="asynchronous_operations.html#boost_asio.reference.asynchronous_operations.default_completion_tokens"><span class="emphasis"><em>DEFAULT</em></span></a>);
131   <span class="emphasis"><em>&#187; <a class="link" href="async_connect/overload6.html" title="async_connect (6 of 6 overloads)">more...</a></em></span>
132 </pre>
133 <h5>
134 <a name="boost_asio.reference.async_connect.h0"></a>
135         <span class="phrase"><a name="boost_asio.reference.async_connect.requirements"></a></span><a class="link" href="async_connect.html#boost_asio.reference.async_connect.requirements">Requirements</a>
136       </h5>
137 <p>
138         <span class="emphasis"><em>Header: </em></span><code class="literal">boost/asio/connect.hpp</code>
139       </p>
140 <p>
141         <span class="emphasis"><em>Convenience header: </em></span><code class="literal">boost/asio.hpp</code>
142       </p>
143 </div>
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146 <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2019 Christopher M. Kohlhoff<p>
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149       </p>
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