Adds asio library and Storage Module
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<title>basic_socket::async_wait</title>
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<link rel="stylesheet" href="../../../boostbook.css" type="text/css">
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<meta name="generator" content="DocBook XSL Stylesheets V1.75.2">
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<link rel="home" href="../../../index.html" title="Asio">
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<link rel="up" href="../basic_socket.html" title="basic_socket">
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<link rel="prev" href="async_connect.html" title="basic_socket::async_connect">
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<link rel="next" href="at_mark.html" title="basic_socket::at_mark">
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</head>
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
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<table cellpadding="2" width="100%"><tr><td valign="top"><img alt="asio C++ library" width="250" height="60" src="../../../asio.png"></td></tr></table>
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<hr>
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<div class="spirit-nav">
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<a accesskey="p" href="async_connect.html"><img src="../../../prev.png" alt="Prev"></a><a accesskey="u" href="../basic_socket.html"><img src="../../../up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../home.png" alt="Home"></a><a accesskey="n" href="at_mark.html"><img src="../../../next.png" alt="Next"></a>
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</div>
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<div class="section">
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<div class="titlepage"><div><div><h4 class="title">
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<a name="asio.reference.basic_socket.async_wait"></a><a class="link" href="async_wait.html" title="basic_socket::async_wait">basic_socket::async_wait</a>
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</h4></div></div></div>
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<p>
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<a class="indexterm" name="asio.indexterm.basic_socket.async_wait"></a>
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Asynchronously
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wait for the socket to become ready to read, ready to write, or to have
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pending error conditions.
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</p>
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<pre class="programlisting">template<
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typename <a class="link" href="../WaitHandler.html" title="Wait handler requirements">WaitHandler</a> = <a class="link" href="../asynchronous_operations.html#asio.reference.asynchronous_operations.default_completion_tokens"><span class="emphasis"><em>DEFAULT</em></span></a>>
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<a class="link" href="../asynchronous_operations.html#asio.reference.asynchronous_operations.automatic_deduction_of_initiating_function_return_type"><span class="emphasis"><em>DEDUCED</em></span></a> async_wait(
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wait_type w,
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WaitHandler && handler = <a class="link" href="../asynchronous_operations.html#asio.reference.asynchronous_operations.default_completion_tokens"><span class="emphasis"><em>DEFAULT</em></span></a>);
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</pre>
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<p>
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This function is used to perform an asynchronous wait for a socket to enter
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a ready to read, write or error condition state.
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</p>
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<h6>
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<a name="asio.reference.basic_socket.async_wait.h0"></a>
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<span><a name="asio.reference.basic_socket.async_wait.parameters"></a></span><a class="link" href="async_wait.html#asio.reference.basic_socket.async_wait.parameters">Parameters</a>
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</h6>
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<div class="variablelist">
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<p class="title"><b></b></p>
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<dl>
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<dt><span class="term">w</span></dt>
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<dd><p>
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Specifies the desired socket state.
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</p></dd>
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<dt><span class="term">handler</span></dt>
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<dd>
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<p>
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The handler to be called when the wait operation completes. Copies
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will be made of the handler as required. The function signature of
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the handler must be:
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</p>
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<pre class="programlisting">void handler(
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const asio::error_code& error // Result of operation
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);
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</pre>
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<p>
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Regardless of whether the asynchronous operation completes immediately
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or not, the handler will not be invoked from within this function.
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On immediate completion, invocation of the handler will be performed
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in a manner equivalent to using <a class="link" href="../post.html" title="post"><code class="computeroutput">post</code></a>.
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</p>
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</dd>
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</dl>
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</div>
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<h6>
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<a name="asio.reference.basic_socket.async_wait.h1"></a>
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<span><a name="asio.reference.basic_socket.async_wait.example"></a></span><a class="link" href="async_wait.html#asio.reference.basic_socket.async_wait.example">Example</a>
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</h6>
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<pre class="programlisting">void wait_handler(const asio::error_code& error)
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{
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if (!error)
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{
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// Wait succeeded.
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}
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}
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...
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asio::ip::tcp::socket socket(my_context);
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...
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socket.async_wait(asio::ip::tcp::socket::wait_read, wait_handler);
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</pre>
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</div>
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<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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<td align="left"></td>
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<td align="right"><div class="copyright-footer">Copyright © 2003-2020 Christopher M.
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Kohlhoff<p>
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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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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</p>
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</div></td>
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</tr></table>
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<hr>
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<div class="spirit-nav">
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<a accesskey="p" href="async_connect.html"><img src="../../../prev.png" alt="Prev"></a><a accesskey="u" href="../basic_socket.html"><img src="../../../up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../home.png" alt="Home"></a><a accesskey="n" href="at_mark.html"><img src="../../../next.png" alt="Next"></a>
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