doc/html/boost_asio/tutorial/tutdaytime5/src.html

   1 <html>
   2 <head>
   3 <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
   4 <title>Source listing for Daytime.5</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="../tutdaytime5.html" title="Daytime.5 - A synchronous UDP daytime server">
   9 <link rel="prev" href="../tutdaytime5.html" title="Daytime.5 - A synchronous UDP daytime server">
  10 <link rel="next" href="../tutdaytime6.html" title="Daytime.6 - An asynchronous UDP daytime server">
  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="../tutdaytime5.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../tutdaytime5.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="../tutdaytime6.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a>
  24 </div>
  25 <div class="section">
  26 <div class="titlepage"><div><div><h4 class="title">
  27 <a name="boost_asio.tutorial.tutdaytime5.src"></a><a class="link" href="src.html" title="Source listing for Daytime.5">Source listing
  28         for Daytime.5</a>
  29 </h4></div></div></div>
  30 <pre class="programlisting"><span class="comment">//</span>
  31 <span class="comment">// server.cpp</span>
  32 <span class="comment">// ~~~~~~~~~~</span>
  33 <span class="comment">//</span>
  34 <span class="comment">// Copyright (c) 2003-2017 Christopher M. Kohlhoff (chris at kohlhoff dot com)</span>
  35 <span class="comment">//</span>
  36 <span class="comment">// Distributed under the Boost Software License, Version 1.0. (See accompanying</span>
  37 <span class="comment">// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)</span>
  38 <span class="comment">//</span>
  39
  40 <span class="special">#</span><span class="identifier">include</span> <span class="special">&lt;</span><span class="identifier">ctime</span><span class="special">&gt;</span>
  41 <span class="special">#</span><span class="identifier">include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
  42 <span class="special">#</span><span class="identifier">include</span> <span class="special">&lt;</span><span class="identifier">string</span><span class="special">&gt;</span>
  43 <span class="special">#</span><span class="identifier">include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">array</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
  44 <span class="special">#</span><span class="identifier">include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">asio</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
  45
  46 <span class="keyword">using</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">asio</span><span class="special">::</span><span class="identifier">ip</span><span class="special">::</span><span class="identifier">udp</span><span class="special">;</span>
  47
  48 <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="identifier">make_daytime_string</span><span class="special">()</span>
  49 <span class="special">{</span>
  50   <span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">std</span><span class="special">;</span> <span class="comment">// For time_t, time and ctime;</span>
  51   <span class="identifier">time_t</span> <span class="identifier">now</span> <span class="special">=</span> <span class="identifier">time</span><span class="special">(</span><span class="number">0</span><span class="special">);</span>
  52   <span class="keyword">return</span> <span class="identifier">ctime</span><span class="special">(&amp;</span><span class="identifier">now</span><span class="special">);</span>
  53 <span class="special">}</span>
  54
  55 <span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span>
  56 <span class="special">{</span>
  57   <span class="keyword">try</span>
  58   <span class="special">{</span>
  59     <span class="identifier">boost</span><span class="special">::</span><span class="identifier">asio</span><span class="special">::</span><span class="identifier">io_service</span> <span class="identifier">io_service</span><span class="special">;</span>
  60
  61     <span class="identifier">udp</span><span class="special">::</span><span class="identifier">socket</span> <span class="identifier">socket</span><span class="special">(</span><span class="identifier">io_service</span><span class="special">,</span> <span class="identifier">udp</span><span class="special">::</span><span class="identifier">endpoint</span><span class="special">(</span><span class="identifier">udp</span><span class="special">::</span><span class="identifier">v4</span><span class="special">(),</span> <span class="number">13</span><span class="special">));</span>
  62
  63     <span class="keyword">for</span> <span class="special">(;;)</span>
  64     <span class="special">{</span>
  65       <span class="identifier">boost</span><span class="special">::</span><span class="identifier">array</span><span class="special">&lt;</span><span class="keyword">char</span><span class="special">,</span> <span class="number">1</span><span class="special">&gt;</span> <span class="identifier">recv_buf</span><span class="special">;</span>
  66       <span class="identifier">udp</span><span class="special">::</span><span class="identifier">endpoint</span> <span class="identifier">remote_endpoint</span><span class="special">;</span>
  67       <span class="identifier">boost</span><span class="special">::</span><span class="identifier">system</span><span class="special">::</span><span class="identifier">error_code</span> <span class="identifier">error</span><span class="special">;</span>
  68       <span class="identifier">socket</span><span class="special">.</span><span class="identifier">receive_from</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">asio</span><span class="special">::</span><span class="identifier">buffer</span><span class="special">(</span><span class="identifier">recv_buf</span><span class="special">),</span>
  69           <span class="identifier">remote_endpoint</span><span class="special">,</span> <span class="number">0</span><span class="special">,</span> <span class="identifier">error</span><span class="special">);</span>
  70
  71       <span class="keyword">if</span> <span class="special">(</span><span class="identifier">error</span> <span class="special">&amp;&amp;</span> <span class="identifier">error</span> <span class="special">!=</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">asio</span><span class="special">::</span><span class="identifier">error</span><span class="special">::</span><span class="identifier">message_size</span><span class="special">)</span>
  72         <span class="keyword">throw</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">system</span><span class="special">::</span><span class="identifier">system_error</span><span class="special">(</span><span class="identifier">error</span><span class="special">);</span>
  73
  74       <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="identifier">message</span> <span class="special">=</span> <span class="identifier">make_daytime_string</span><span class="special">();</span>
  75
  76       <span class="identifier">boost</span><span class="special">::</span><span class="identifier">system</span><span class="special">::</span><span class="identifier">error_code</span> <span class="identifier">ignored_error</span><span class="special">;</span>
  77       <span class="identifier">socket</span><span class="special">.</span><span class="identifier">send_to</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">asio</span><span class="special">::</span><span class="identifier">buffer</span><span class="special">(</span><span class="identifier">message</span><span class="special">),</span>
  78           <span class="identifier">remote_endpoint</span><span class="special">,</span> <span class="number">0</span><span class="special">,</span> <span class="identifier">ignored_error</span><span class="special">);</span>
  79     <span class="special">}</span>
  80   <span class="special">}</span>
  81   <span class="keyword">catch</span> <span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">exception</span><span class="special">&amp;</span> <span class="identifier">e</span><span class="special">)</span>
  82   <span class="special">{</span>
  83     <span class="identifier">std</span><span class="special">::</span><span class="identifier">cerr</span> <span class="special">&lt;&lt;</span> <span class="identifier">e</span><span class="special">.</span><span class="identifier">what</span><span class="special">()</span> <span class="special">&lt;&lt;</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span>
  84   <span class="special">}</span>
  85
  86   <span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
  87 <span class="special">}</span>
  88 </pre>
  89 <p>
  90           Return to <a class="link" href="../tutdaytime5.html" title="Daytime.5 - A synchronous UDP daytime server">Daytime.5 - A
  91           synchronous UDP daytime server</a>
  92         </p>
  93 </div>
  94 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
  95 <td align="left"></td>
  96 <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2017 Christopher M. Kohlhoff<p>
  97         Distributed under the Boost Software License, Version 1.0. (See accompanying
  98         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>)
  99       </p>
 100 </div></td>
 101 </tr></table>
 102 <hr>
 103 <div class="spirit-nav">
 104 <a accesskey="p" href="../tutdaytime5.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../tutdaytime5.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="../tutdaytime6.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a>
 105 </div>
 106 </body>
 107 </html>