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Posted to commits@mesos.apache.org by vi...@apache.org on 2017/06/13 19:42:04 UTC

[38/51] [partial] mesos-site git commit: Renamed `publish` directory to `content`.

http://git-wip-us.apache.org/repos/asf/mesos-site/blob/a3206036/content/api/latest/c++/3rdparty_2stout_2include_2stout_2ip_8hpp_source.html
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+<div id="nav-path" class="navpath">
+  <ul>
+<li class="navelem"><a class="el" href="dir_8cab8f464681f7cc51cee77e79a434cd.html">3rdparty</a></li><li class="navelem"><a class="el" href="dir_aa547de1d719d14adccfca1dfb1735b3.html">stout</a></li><li class="navelem"><a class="el" href="dir_1a1b923d951dd999d43396870333fc33.html">include</a></li><li class="navelem"><a class="el" href="dir_dbd52553d038069c1ed93e3477ea333d.html">stout</a></li>  </ul>
+</div>
+</div><!-- top -->
+<div class="header">
+  <div class="headertitle">
+<div class="title">ip.hpp</div>  </div>
+</div><!--header-->
+<div class="contents">
+<a href="3rdparty_2stout_2include_2stout_2ip_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">// Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);</span></div>
+<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">// you may not use this file except in compliance with the License.</span></div>
+<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">// You may obtain a copy of the License at</span></div>
+<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">//</span></div>
+<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">//  http://www.apache.org/licenses/LICENSE-2.0</span></div>
+<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">//</span></div>
+<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">// Unless required by applicable law or agreed to in writing, software</span></div>
+<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">// distributed under the License is distributed on an &quot;AS IS&quot; BASIS,</span></div>
+<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div>
+<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment">// See the License for the specific language governing permissions and</span></div>
+<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment">// limitations under the License.</span></div>
+<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;</div>
+<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#ifndef __STOUT_IP_HPP__</span></div>
+<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define __STOUT_IP_HPP__</span></div>
+<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="preprocessor"></span></div>
+<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment">// For &#39;sockaddr&#39;.</span></div>
+<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="preprocessor">#ifndef __WINDOWS__</span></div>
+<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#include &lt;arpa/inet.h&gt;</span></div>
+<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="preprocessor">#endif // __WINDOWS__</span></div>
+<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="preprocessor"></span></div>
+<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="preprocessor">#if defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__)</span></div>
+<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#include &lt;ifaddrs.h&gt;</span></div>
+<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor">#endif // __linux__ || __APPLE__ || __FreeBSD__</span></div>
+<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#include &lt;stdint.h&gt;</span></div>
+<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#include &lt;stdio.h&gt;</span></div>
+<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor">#include &lt;string.h&gt;</span></div>
+<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;</div>
+<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="preprocessor">#ifdef __APPLE__</span></div>
+<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#include &lt;net/if.h&gt;</span></div>
+<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="preprocessor">#include &lt;net/if_dl.h&gt;</span></div>
+<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="preprocessor">#include &lt;net/if_types.h&gt;</span></div>
+<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="preprocessor">#endif // __APPLE__</span></div>
+<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="preprocessor"></span></div>
+<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="comment">// Note: Header grouping and ordering is considered before</span></div>
+<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="comment">// inclusion/exclusion by platform.</span></div>
+<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="comment">// For &#39;inet_pton&#39;, &#39;inet_ntop&#39;.</span></div>
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+<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#include &lt;netinet/in.h&gt;</span></div>
+<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="preprocessor">#include &lt;sys/socket.h&gt;</span></div>
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+<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="preprocessor"></span></div>
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+<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="preprocessor">#include &lt;boost/functional/hash.hpp&gt;</span></div>
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+<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="strerror_8hpp.html">stout/os/strerror.hpp</a>&gt;</span></div>
+<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="result_8hpp.html">stout/result.hpp</a>&gt;</span></div>
+<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="stringify_8hpp.html">stout/stringify.hpp</a>&gt;</span></div>
+<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="strings_8hpp.html">stout/strings.hpp</a>&gt;</span></div>
+<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="try_8hpp.html">stout/try.hpp</a>&gt;</span></div>
+<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="unreachable_8hpp.html">stout/unreachable.hpp</a>&gt;</span></div>
+<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;</div>
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+<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#include &lt;<a class="code" href="3rdparty_2stout_2include_2stout_2windows_8hpp.html">stout/windows.hpp</a>&gt;</span></div>
+<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;<span class="preprocessor">#endif // __WINDOWS__</span></div>
+<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;<span class="preprocessor"></span></div>
+<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;</div>
+<div class="line"><a name="l00070"></a><span class="lineno"><a class="line" href="namespacenet.html">   70</a></span>&#160;<span class="keyword">namespace </span>net {</div>
+<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;</div>
+<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;<span class="comment">// Represents an IP.</span></div>
+<div class="line"><a name="l00073"></a><span class="lineno"><a class="line" href="classnet_1_1IP.html">   73</a></span>&#160;<span class="keyword">class </span><a class="code" href="classnet_1_1IP.html">IP</a></div>
+<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;{</div>
+<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;<span class="keyword">public</span>:</div>
+<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;  <span class="comment">// Creates an IP from the given string that has the dot-decimal</span></div>
+<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;  <span class="comment">// format. For example:</span></div>
+<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;  <span class="comment">//   10.0.0.1</span></div>
+<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;  <span class="comment">//   192.168.1.100</span></div>
+<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;  <span class="comment">//   172.158.1.23</span></div>
+<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;  <span class="keyword">static</span> <a class="code" href="classTry.html">Try&lt;IP&gt;</a> <a class="code" href="classnet_1_1IP.html#ac12ff5e8e0e95eac1bf8faeeadf88230">parse</a>(<span class="keyword">const</span> std::string&amp; value, <span class="keywordtype">int</span> <a class="code" href="classnet_1_1IP.html#ac7007d7cc8e87925e19d60515bf28c03">family</a>);</div>
+<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;</div>
+<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;  <span class="comment">// Creates an IP from a struct sockaddr_storage.</span></div>
+<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;  <span class="keyword">static</span> <a class="code" href="classTry.html">Try&lt;IP&gt;</a> <a class="code" href="classnet_1_1IP.html#ada206eb1ab14c032f071daf9b8c1b96c">create</a>(<span class="keyword">const</span> <span class="keyword">struct</span> sockaddr_storage&amp; _storage);</div>
+<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;</div>
+<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;  <span class="comment">// Creates an IP from a struct sockaddr.</span></div>
+<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;  <span class="keyword">static</span> <a class="code" href="classTry.html">Try&lt;IP&gt;</a> <a class="code" href="classnet_1_1IP.html#ada206eb1ab14c032f071daf9b8c1b96c">create</a>(<span class="keyword">const</span> <span class="keyword">struct</span> sockaddr&amp; _storage);</div>
+<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;</div>
+<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;  <span class="comment">// Creates an IP from struct in_addr. Note that by standard, struct</span></div>
+<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;  <span class="comment">// in_addr stores the IP address in network order.</span></div>
+<div class="line"><a name="l00091"></a><span class="lineno"><a class="line" href="classnet_1_1IP.html#a59c961e993728ab3dc969249ca610417">   91</a></span>&#160;  <span class="keyword">explicit</span> <a class="code" href="classnet_1_1IP.html#a59c961e993728ab3dc969249ca610417">IP</a>(<span class="keyword">const</span> <span class="keyword">struct</span> in_addr&amp; _storage)</div>
+<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;    : family_(AF_INET)</div>
+<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;  {</div>
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+<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;     storage_.in_ = _storage;</div>
+<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;  }</div>
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+<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;  <span class="comment">// Creates an IP from a 32 bit unsigned integer. Note that the</span></div>
+<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;  <span class="comment">// integer stores the IP address in host order.</span></div>
+<div class="line"><a name="l00100"></a><span class="lineno"><a class="line" href="classnet_1_1IP.html#a458f3ae5cd3ce3de5b594fceb16c00a1">  100</a></span>&#160;  <span class="keyword">explicit</span> <a class="code" href="classnet_1_1IP.html#a458f3ae5cd3ce3de5b594fceb16c00a1">IP</a>(uint32_t _storage)</div>
+<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;    : family_(AF_INET)</div>
+<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;  {</div>
+<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;     clear();</div>
+<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;     storage_.in_.s_addr = htonl(_storage);</div>
+<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;  }</div>
+<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;</div>
+<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;  <span class="comment">// Returns the family type.</span></div>
+<div class="line"><a name="l00108"></a><span class="lineno"><a class="line" href="classnet_1_1IP.html#ac7007d7cc8e87925e19d60515bf28c03">  108</a></span>&#160;  <span class="keywordtype">int</span> <a class="code" href="classnet_1_1IP.html#ac7007d7cc8e87925e19d60515bf28c03">family</a>()<span class="keyword"> const</span></div>
+<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;<span class="keyword">  </span>{</div>
+<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;    <span class="keywordflow">return</span> family_;</div>
+<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;  }</div>
+<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;</div>
+<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;  <span class="comment">// Returns the struct in_addr storage.</span></div>
+<div class="line"><a name="l00114"></a><span class="lineno"><a class="line" href="classnet_1_1IP.html#a9b2b8da4b79c15e6632a9305a3d4c7cb">  114</a></span>&#160;  <a class="code" href="classTry.html">Try&lt;struct in_addr&gt;</a> <a class="code" href="classnet_1_1IP.html#a9b2b8da4b79c15e6632a9305a3d4c7cb">in</a>()<span class="keyword"> const</span></div>
+<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;<span class="keyword">  </span>{</div>
+<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;    <span class="keywordflow">if</span> (family_ == AF_INET) {</div>
+<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;      <span class="keywordflow">return</span> storage_.in_;</div>
+<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;    } <span class="keywordflow">else</span> {</div>
+<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;      <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(<span class="stringliteral">&quot;Unsupported family type: &quot;</span> + <a class="code" href="namespacens.html#a28116b46e6543597a11733424cd1aa20">stringify</a>(family_));</div>
+<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;    }</div>
+<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;  }</div>
+<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;</div>
+<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;  <span class="comment">// Checks if this IP is for loopback (e.g., INADDR_LOOPBACK).</span></div>
+<div class="line"><a name="l00124"></a><span class="lineno"><a class="line" href="classnet_1_1IP.html#aa7fa7dfc2b72525f0a86a07b03e8ca3e">  124</a></span>&#160;  <span class="keywordtype">bool</span> <a class="code" href="classnet_1_1IP.html#aa7fa7dfc2b72525f0a86a07b03e8ca3e">isLoopback</a>()<span class="keyword"> const</span></div>
+<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;<span class="keyword">  </span>{</div>
+<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;    <span class="keywordflow">switch</span> (family_) {</div>
+<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;      <span class="keywordflow">case</span> AF_INET:</div>
+<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;        <span class="keywordflow">return</span> storage_.in_.s_addr == htonl(INADDR_LOOPBACK);</div>
+<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;      <span class="keywordflow">default</span>:</div>
+<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;        <a class="code" href="unreachable_8hpp.html#a0bc63b24b654ca433be7b97a3edde132">UNREACHABLE</a>();</div>
+<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;    }</div>
+<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;  }</div>
+<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;</div>
+<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;  <span class="comment">// Checks if this IP is for any incoming address (e.g., INADDR_ANY).</span></div>
+<div class="line"><a name="l00135"></a><span class="lineno"><a class="line" href="classnet_1_1IP.html#adef252cbd8b3cb3ddae4b1aea4ce04c1">  135</a></span>&#160;  <span class="keywordtype">bool</span> <a class="code" href="classnet_1_1IP.html#adef252cbd8b3cb3ddae4b1aea4ce04c1">isAny</a>()<span class="keyword"> const</span></div>
+<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;<span class="keyword">  </span>{</div>
+<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;    <span class="keywordflow">switch</span> (family_) {</div>
+<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;      <span class="keywordflow">case</span> AF_INET:</div>
+<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;        <span class="keywordflow">return</span> storage_.in_.s_addr == htonl(INADDR_ANY);</div>
+<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;      <span class="keywordflow">default</span>:</div>
+<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;        <a class="code" href="unreachable_8hpp.html#a0bc63b24b654ca433be7b97a3edde132">UNREACHABLE</a>();</div>
+<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;    }</div>
+<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;  }</div>
+<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;</div>
+<div class="line"><a name="l00145"></a><span class="lineno"><a class="line" href="classnet_1_1IP.html#a5ceb2f0c6ba902dbe29c1d62f7f53427">  145</a></span>&#160;  <span class="keywordtype">bool</span> <a class="code" href="classnet_1_1IP.html#a5ceb2f0c6ba902dbe29c1d62f7f53427">operator==</a>(<span class="keyword">const</span> <a class="code" href="classnet_1_1IP.html">IP</a>&amp; that)<span class="keyword"> const</span></div>
+<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;<span class="keyword">  </span>{</div>
+<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;    <span class="keywordflow">if</span> (family_ != that.family_) {</div>
+<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;      <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
+<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;    } <span class="keywordflow">else</span> {</div>
+<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;      <span class="keywordflow">return</span> memcmp(&amp;storage_, &amp;that.storage_, <span class="keyword">sizeof</span>(storage_)) == 0;</div>
+<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;    }</div>
+<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;  }</div>
+<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;</div>
+<div class="line"><a name="l00154"></a><span class="lineno"><a class="line" href="classnet_1_1IP.html#aaee210b512bc19fd992111a88da25929">  154</a></span>&#160;  <span class="keywordtype">bool</span> <a class="code" href="classnet_1_1IP.html#aaee210b512bc19fd992111a88da25929">operator!=</a>(<span class="keyword">const</span> <a class="code" href="classnet_1_1IP.html">IP</a>&amp; that)<span class="keyword"> const</span></div>
+<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;<span class="keyword">  </span>{</div>
+<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;    <span class="keywordflow">return</span> !(*<span class="keyword">this</span> == that);</div>
+<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;  }</div>
+<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;</div>
+<div class="line"><a name="l00159"></a><span class="lineno"><a class="line" href="classnet_1_1IP.html#a93ced0f7f6476376931b8617b00c8fb0">  159</a></span>&#160;  <span class="keywordtype">bool</span> <a class="code" href="classnet_1_1IP.html#a93ced0f7f6476376931b8617b00c8fb0">operator&lt;</a>(<span class="keyword">const</span> <a class="code" href="classnet_1_1IP.html">IP</a>&amp; that)<span class="keyword"> const</span></div>
+<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;<span class="keyword">  </span>{</div>
+<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;    <span class="keywordflow">if</span> (family_ != that.family_) {</div>
+<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;      <span class="keywordflow">return</span> family_ &lt; that.family_;</div>
+<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;    } <span class="keywordflow">else</span> {</div>
+<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;      <span class="keywordflow">return</span> memcmp(&amp;storage_, &amp;that.storage_, <span class="keyword">sizeof</span>(storage_)) &lt; 0;</div>
+<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;    }</div>
+<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;  }</div>
+<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;</div>
+<div class="line"><a name="l00168"></a><span class="lineno"><a class="line" href="classnet_1_1IP.html#ae57a99f62c1f524eb2937408993365cb">  168</a></span>&#160;  <span class="keywordtype">bool</span> <a class="code" href="classnet_1_1IP.html#ae57a99f62c1f524eb2937408993365cb">operator&gt;</a>(<span class="keyword">const</span> <a class="code" href="classnet_1_1IP.html">IP</a>&amp; that)<span class="keyword"> const</span></div>
+<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;<span class="keyword">  </span>{</div>
+<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;    <span class="keywordflow">if</span> (family_ != that.family_) {</div>
+<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;      <span class="keywordflow">return</span> family_ &gt; that.family_;</div>
+<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;    } <span class="keywordflow">else</span> {</div>
+<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;      <span class="keywordflow">return</span> memcmp(&amp;storage_, &amp;that.storage_, <span class="keyword">sizeof</span>(storage_)) &gt; 0;</div>
+<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;    }</div>
+<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;  }</div>
+<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;</div>
+<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;<span class="keyword">private</span>:</div>
+<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;  <span class="comment">// NOTE: We need to clear the union when creating an IP because the</span></div>
+<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;  <span class="comment">// equality check uses memcmp.</span></div>
+<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;  <span class="keywordtype">void</span> clear()</div>
+<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;  {</div>
+<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;    memset(&amp;storage_, 0, <span class="keyword">sizeof</span>(storage_));</div>
+<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;  }</div>
+<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;</div>
+<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;  <span class="keyword">union </span>Storage</div>
+<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;  {</div>
+<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;    <span class="keyword">struct </span>in_addr in_;</div>
+<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;  };</div>
+<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;</div>
+<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;  <span class="keywordtype">int</span> family_;</div>
+<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;  Storage storage_;</div>
+<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;};</div>
+<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;</div>
+<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;</div>
+<div class="line"><a name="l00195"></a><span class="lineno"><a class="line" href="classnet_1_1IP.html#ac12ff5e8e0e95eac1bf8faeeadf88230">  195</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="classTry.html">Try&lt;IP&gt;</a> <a class="code" href="classnet_1_1IP.html#ac12ff5e8e0e95eac1bf8faeeadf88230">IP::parse</a>(<span class="keyword">const</span> std::string&amp; value, <span class="keywordtype">int</span> family)</div>
+<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;{</div>
+<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;  Storage storage;</div>
+<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;  <span class="keywordflow">switch</span> (family) {</div>
+<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;    <span class="keywordflow">case</span> AF_INET: {</div>
+<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;      <span class="keywordflow">if</span> (inet_pton(AF_INET, value.c_str(), &amp;storage.in_) == 0) {</div>
+<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;        <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(<span class="stringliteral">&quot;Failed to parse the IP&quot;</span>);</div>
+<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;      }</div>
+<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;      <span class="keywordflow">return</span> <a class="code" href="classnet_1_1IP.html#a59c961e993728ab3dc969249ca610417">IP</a>(storage.in_);</div>
+<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;    }</div>
+<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;    <span class="keywordflow">default</span>: {</div>
+<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;      <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(<span class="stringliteral">&quot;Unsupported family type: &quot;</span> + <a class="code" href="namespacens.html#a28116b46e6543597a11733424cd1aa20">stringify</a>(family));</div>
+<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;    }</div>
+<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;  }</div>
+<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;}</div>
+<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;</div>
+<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;</div>
+<div class="line"><a name="l00212"></a><span class="lineno"><a class="line" href="classnet_1_1IP.html#ada206eb1ab14c032f071daf9b8c1b96c">  212</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="classTry.html">Try&lt;IP&gt;</a> <a class="code" href="classnet_1_1IP.html#ada206eb1ab14c032f071daf9b8c1b96c">IP::create</a>(<span class="keyword">const</span> <span class="keyword">struct</span> sockaddr_storage&amp; _storage)</div>
+<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;{</div>
+<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;  <span class="comment">// According to POSIX: (IEEE Std 1003.1, 2004)</span></div>
+<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;  <span class="comment">//</span></div>
+<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;  <span class="comment">// (1) `sockaddr_storage` is &quot;aligned at an appropriate boundary so that</span></div>
+<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;  <span class="comment">// pointers to it can be cast as pointers to protocol-specific address</span></div>
+<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;  <span class="comment">// structures and used to access the fields of those structures without</span></div>
+<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;  <span class="comment">// alignment problems.&quot;</span></div>
+<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;  <span class="comment">//</span></div>
+<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;  <span class="comment">// (2) &quot;When a `sockaddr_storage` structure is cast as a `sockaddr`</span></div>
+<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;  <span class="comment">// structure, the `ss_family` field of the `sockaddr_storage` structure</span></div>
+<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;  <span class="comment">// shall map onto the `sa_family` field of the `sockaddr` structure.&quot;</span></div>
+<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;  <span class="comment">//</span></div>
+<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;  <span class="comment">// Therefore, casting from `const sockaddr_storage*` to `const sockaddr*`</span></div>
+<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;  <span class="comment">// (then subsequently dereferencing the `const sockaddr*`) should be safe.</span></div>
+<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;  <span class="comment">// Note that casting in the reverse direction (`const sockaddr*` to</span></div>
+<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;  <span class="comment">// `const sockaddr_storage*`) would NOT be safe, since the former might</span></div>
+<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;  <span class="comment">// not be aligned appropriately.</span></div>
+<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;  <span class="keyword">const</span> <span class="keyword">auto</span>* addr = <span class="keyword">reinterpret_cast&lt;</span><span class="keyword">const </span>struct sockaddr*<span class="keyword">&gt;</span>(&amp;_storage);</div>
+<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;  <span class="keywordflow">return</span> <a class="code" href="classnet_1_1IP.html#ada206eb1ab14c032f071daf9b8c1b96c">create</a>(*addr);</div>
+<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;}</div>
+<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;</div>
+<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;</div>
+<div class="line"><a name="l00235"></a><span class="lineno"><a class="line" href="classnet_1_1IP.html#a627b2e1c1f63a2bc6315a9dfecee141d">  235</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="classTry.html">Try&lt;IP&gt;</a> <a class="code" href="classnet_1_1IP.html#ada206eb1ab14c032f071daf9b8c1b96c">IP::create</a>(<span class="keyword">const</span> <span class="keyword">struct</span> sockaddr&amp; _storage)</div>
+<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;{</div>
+<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;  <span class="keywordflow">switch</span> (_storage.sa_family) {</div>
+<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;    <span class="keywordflow">case</span> AF_INET: {</div>
+<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;      <span class="keyword">const</span> <span class="keyword">auto</span>* addr = <span class="keyword">reinterpret_cast&lt;</span><span class="keyword">const </span>struct sockaddr_in*<span class="keyword">&gt;</span>(&amp;_storage);</div>
+<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;      <span class="keywordflow">return</span> <a class="code" href="classnet_1_1IP.html#a59c961e993728ab3dc969249ca610417">IP</a>(addr-&gt;sin_addr);</div>
+<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;    }</div>
+<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;    <span class="keywordflow">default</span>: {</div>
+<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;      <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(<span class="stringliteral">&quot;Unsupported family type: &quot;</span> + <a class="code" href="namespacens.html#a28116b46e6543597a11733424cd1aa20">stringify</a>(_storage.sa_family));</div>
+<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;    }</div>
+<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;  }</div>
+<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;}</div>
+<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;</div>
+<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;</div>
+<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;<span class="comment">// Returns the string representation of the given IP using the</span></div>
+<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;<span class="comment">// canonical dot-decimal form. For example: &quot;10.0.0.1&quot;.</span></div>
+<div class="line"><a name="l00251"></a><span class="lineno"><a class="line" href="namespacenet.html#ab2ed5173deb8f3daf281f9828613956d">  251</a></span>&#160;<span class="keyword">inline</span> std::ostream&amp; <a class="code" href="namespacenet.html#ab2ed5173deb8f3daf281f9828613956d">operator&lt;&lt;</a>(std::ostream&amp; stream, <span class="keyword">const</span> <a class="code" href="classnet_1_1IP.html">IP</a>&amp; ip)</div>
+<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;{</div>
+<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;  <span class="keywordflow">switch</span> (ip.<a class="code" href="classnet_1_1IP.html#ac7007d7cc8e87925e19d60515bf28c03">family</a>()) {</div>
+<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;    <span class="keywordflow">case</span> AF_INET: {</div>
+<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;      <span class="keywordtype">char</span> buffer[INET_ADDRSTRLEN];</div>
+<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;      <span class="keyword">struct </span>in_addr in = ip.<a class="code" href="classnet_1_1IP.html#a9b2b8da4b79c15e6632a9305a3d4c7cb">in</a>().get();</div>
+<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;      <span class="keywordflow">if</span> (inet_ntop(AF_INET, &amp;in, buffer, <span class="keyword">sizeof</span>(buffer)) == <span class="keyword">nullptr</span>) {</div>
+<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;        <span class="comment">// We do not expect inet_ntop to fail because all parameters</span></div>
+<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;        <span class="comment">// passed in are valid.</span></div>
+<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;        <a class="code" href="abort_8hpp.html#a4d84a74fe6e4f84bc3d2f901b9e89f93">ABORT</a>(<span class="stringliteral">&quot;Failed to get human-readable IP for &quot;</span> +</div>
+<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;              <a class="code" href="namespacens.html#a28116b46e6543597a11733424cd1aa20">stringify</a>(ntohl(in.s_addr)) + <span class="stringliteral">&quot;: &quot;</span> + <a class="code" href="namespaceos.html#aa9ac22b4028f187826a9861373006abf">os::strerror</a>(errno));</div>
+<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;      }</div>
+<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;</div>
+<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;      stream &lt;&lt; buffer;</div>
+<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;      <span class="keywordflow">return</span> stream;</div>
+<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;    }</div>
+<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;    <span class="keywordflow">default</span>: {</div>
+<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;      <a class="code" href="unreachable_8hpp.html#a0bc63b24b654ca433be7b97a3edde132">UNREACHABLE</a>();</div>
+<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;    }</div>
+<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;  }</div>
+<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;}</div>
+<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;</div>
+<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;</div>
+<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;<span class="comment">// Represents an IP network. We store the IP address and the IP</span></div>
+<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;<span class="comment">// netmask which defines the subnet.</span></div>
+<div class="line"><a name="l00276"></a><span class="lineno"><a class="line" href="classnet_1_1IPNetwork.html">  276</a></span>&#160;<span class="keyword">class </span><a class="code" href="classnet_1_1IPNetwork.html">IPNetwork</a></div>
+<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;{</div>
+<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;<span class="keyword">public</span>:</div>
+<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;  <span class="comment">// Returns the IPv4 network for loopback (i.e., 127.0.0.1/8).</span></div>
+<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;  <span class="keyword">static</span> <a class="code" href="classnet_1_1IPNetwork.html">IPNetwork</a> <a class="code" href="classnet_1_1IPNetwork.html#af71cd4cc8ebff5ecf9bec6da3eb9d97d">LOOPBACK_V4</a>();</div>
+<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;</div>
+<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;  <span class="comment">// Creates an IP network from the given string that has the</span></div>
+<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;  <span class="comment">// dot-decimal format with subnet prefix).</span></div>
+<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;  <span class="comment">// For example:</span></div>
+<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;  <span class="comment">//   10.0.0.1/8</span></div>
+<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;  <span class="comment">//   192.168.1.100/24</span></div>
+<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;  <span class="comment">//   172.158.1.23</span></div>
+<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;  <span class="keyword">static</span> <a class="code" href="classTry.html">Try&lt;IPNetwork&gt;</a> <a class="code" href="classnet_1_1IPNetwork.html#a8ebd0dd070b2e0bf10914225c98aac0f">parse</a>(<span class="keyword">const</span> std::string&amp; value, <span class="keywordtype">int</span> family);</div>
+<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;</div>
+<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;  <span class="comment">// Creates an IP network from the given IP address and netmask.</span></div>
+<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;  <span class="comment">// Returns error if the netmask is not valid (e.g., not contiguous).</span></div>
+<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;  <span class="keyword">static</span> <a class="code" href="classTry.html">Try&lt;IPNetwork&gt;</a> <a class="code" href="classnet_1_1IPNetwork.html#a29645a80f4a422825dcd402f86f138e6">create</a>(<span class="keyword">const</span> <a class="code" href="classnet_1_1IP.html">IP</a>&amp; <a class="code" href="classnet_1_1IPNetwork.html#a9986306f9653245f55f4570771726a67">address</a>, <span class="keyword">const</span> <a class="code" href="classnet_1_1IP.html">IP</a>&amp; <a class="code" href="classnet_1_1IPNetwork.html#a68e36065af86781ad06a285bcb120ed4">netmask</a>);</div>
+<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;</div>
+<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;  <span class="comment">// Creates an IP network from an IP address and a subnet prefix.</span></div>
+<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;  <span class="comment">// Returns error if the prefix is not valid.</span></div>
+<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;  <span class="keyword">static</span> <a class="code" href="classTry.html">Try&lt;IPNetwork&gt;</a> <a class="code" href="classnet_1_1IPNetwork.html#a29645a80f4a422825dcd402f86f138e6">create</a>(<span class="keyword">const</span> <a class="code" href="classnet_1_1IP.html">IP</a>&amp; address, <span class="keywordtype">int</span> <a class="code" href="classnet_1_1IPNetwork.html#a119a8f122571f5532146b8130c0c0a50">prefix</a>);</div>
+<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;</div>
+<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;  <span class="comment">// Returns the first available IP network of a given link device.</span></div>
+<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;  <span class="comment">// The link device is specified using its name (e.g., eth0). Returns</span></div>
+<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;  <span class="comment">// error if the link device is not found. Returns none if the link</span></div>
+<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;  <span class="comment">// device is found, but does not have an IP network.</span></div>
+<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;  <span class="comment">// TODO(jieyu): It is uncommon, but likely that a link device has</span></div>
+<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;  <span class="comment">// multiple IP networks. In that case, consider returning the</span></div>
+<div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;  <span class="comment">// primary IP network instead of the first one.</span></div>
+<div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;  <span class="keyword">static</span> <a class="code" href="classResult.html">Result&lt;IPNetwork&gt;</a> <a class="code" href="classnet_1_1IPNetwork.html#ae3b0f30eb04ac069e377f62afae08a42">fromLinkDevice</a>(<span class="keyword">const</span> std::string&amp; <a class="code" href="namespaceos_1_1Shell.html#acfe16ef2b1146ad49a8651c0a457ce46">name</a>, <span class="keywordtype">int</span> family);</div>
+<div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;</div>
+<div class="line"><a name="l00307"></a><span class="lineno"><a class="line" href="classnet_1_1IPNetwork.html#a9986306f9653245f55f4570771726a67">  307</a></span>&#160;  <a class="code" href="classnet_1_1IP.html">IP</a> <a class="code" href="classnet_1_1IPNetwork.html#a9986306f9653245f55f4570771726a67">address</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> address_; }</div>
+<div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;</div>
+<div class="line"><a name="l00309"></a><span class="lineno"><a class="line" href="classnet_1_1IPNetwork.html#a68e36065af86781ad06a285bcb120ed4">  309</a></span>&#160;  <a class="code" href="classnet_1_1IP.html">IP</a> <a class="code" href="classnet_1_1IPNetwork.html#a68e36065af86781ad06a285bcb120ed4">netmask</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> netmask_; }</div>
+<div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;</div>
+<div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;  <span class="comment">// Returns the prefix of the subnet defined by the IP netmask.</span></div>
+<div class="line"><a name="l00312"></a><span class="lineno"><a class="line" href="classnet_1_1IPNetwork.html#a119a8f122571f5532146b8130c0c0a50">  312</a></span>&#160;  <span class="keywordtype">int</span> <a class="code" href="classnet_1_1IPNetwork.html#a119a8f122571f5532146b8130c0c0a50">prefix</a>()<span class="keyword"> const</span></div>
+<div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;<span class="keyword">  </span>{</div>
+<div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;    <span class="keywordflow">switch</span> (netmask_.<a class="code" href="classnet_1_1IP.html#ac7007d7cc8e87925e19d60515bf28c03">family</a>()) {</div>
+<div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;      <span class="keywordflow">case</span> AF_INET: {</div>
+<div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;        <span class="keywordflow">return</span> <a class="code" href="namespacebits.html#a0fada23875c3456cff49f279b5a5239b">bits::countSetBits</a>(ntohl(netmask_.<a class="code" href="classnet_1_1IP.html#a9b2b8da4b79c15e6632a9305a3d4c7cb">in</a>().get().s_addr));</div>
+<div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;      }</div>
+<div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;      <span class="keywordflow">default</span>: {</div>
+<div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;        <a class="code" href="unreachable_8hpp.html#a0bc63b24b654ca433be7b97a3edde132">UNREACHABLE</a>();</div>
+<div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;      }</div>
+<div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;    }</div>
+<div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;  }</div>
+<div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;</div>
+<div class="line"><a name="l00324"></a><span class="lineno"><a class="line" href="classnet_1_1IPNetwork.html#aa76c5f02de4eb076d5c26b322d418639">  324</a></span>&#160;  <span class="keywordtype">bool</span> <a class="code" href="classnet_1_1IPNetwork.html#aa76c5f02de4eb076d5c26b322d418639">operator==</a>(<span class="keyword">const</span> <a class="code" href="classnet_1_1IPNetwork.html">IPNetwork</a>&amp; that)<span class="keyword"> const</span></div>
+<div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;<span class="keyword">  </span>{</div>
+<div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;    <span class="keywordflow">return</span> address_ == that.address_ &amp;&amp; netmask_ == that.netmask_;</div>
+<div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;  }</div>
+<div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;</div>
+<div class="line"><a name="l00329"></a><span class="lineno"><a class="line" href="classnet_1_1IPNetwork.html#ae10f694763e117de1f209efa45963b06">  329</a></span>&#160;  <span class="keywordtype">bool</span> <a class="code" href="classnet_1_1IPNetwork.html#ae10f694763e117de1f209efa45963b06">operator!=</a>(<span class="keyword">const</span> <a class="code" href="classnet_1_1IPNetwork.html">IPNetwork</a>&amp; that)<span class="keyword"> const</span></div>
+<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;<span class="keyword">  </span>{</div>
+<div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;    <span class="keywordflow">return</span> !(*<span class="keyword">this</span> == that);</div>
+<div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;  }</div>
+<div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;</div>
+<div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;<span class="keyword">private</span>:</div>
+<div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;  <a class="code" href="classnet_1_1IPNetwork.html">IPNetwork</a>(<span class="keyword">const</span> <a class="code" href="classnet_1_1IP.html">IP</a>&amp; _address, <span class="keyword">const</span> <a class="code" href="classnet_1_1IP.html">IP</a>&amp; _netmask)</div>
+<div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;    : address_(_address), netmask_(_netmask) {}</div>
+<div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;</div>
+<div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;  IP address_;</div>
+<div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;  IP netmask_;</div>
+<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;};</div>
+<div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;</div>
+<div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;</div>
+<div class="line"><a name="l00343"></a><span class="lineno"><a class="line" href="classnet_1_1IPNetwork.html#a8ebd0dd070b2e0bf10914225c98aac0f">  343</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="classTry.html">Try&lt;IPNetwork&gt;</a> <a class="code" href="classnet_1_1IPNetwork.html#a8ebd0dd070b2e0bf10914225c98aac0f">IPNetwork::parse</a>(<span class="keyword">const</span> std::string&amp; value, <span class="keywordtype">int</span> family)</div>
+<div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;{</div>
+<div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;  std::vector&lt;std::string&gt; tokens = <a class="code" href="namespacestrings.html#a1f86a4a73f20056475dc065ec984eb7a">strings::split</a>(value, <span class="stringliteral">&quot;/&quot;</span>);</div>
+<div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;</div>
+<div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;  <span class="keywordflow">if</span> (tokens.size() != 2) {</div>
+<div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(</div>
+<div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;        <span class="stringliteral">&quot;Unexpected number of &#39;/&#39; detected: &quot;</span> +</div>
+<div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;        <a class="code" href="namespacens.html#a28116b46e6543597a11733424cd1aa20">stringify</a>(tokens.size()));</div>
+<div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;  }</div>
+<div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;</div>
+<div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;  <span class="comment">// Parse the IP address.</span></div>
+<div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;  <a class="code" href="classTry.html">Try&lt;IP&gt;</a> <a class="code" href="classnet_1_1IPNetwork.html#a9986306f9653245f55f4570771726a67">address</a> = <a class="code" href="classnet_1_1IP.html#ac12ff5e8e0e95eac1bf8faeeadf88230">IP::parse</a>(tokens[0], family);</div>
+<div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;  <span class="keywordflow">if</span> (address.<a class="code" href="classTry.html#a0b98f95163b8a38daafd1651b043a276">isError</a>()) {</div>
+<div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(<span class="stringliteral">&quot;Failed to parse the IP address: &quot;</span> + address.<a class="code" href="classTry.html#aec4a11ddd3c036e889d90b7eb6258ba7">error</a>());</div>
+<div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;  }</div>
+<div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;</div>
+<div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;  <span class="comment">// Parse the subnet prefix.</span></div>
+<div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;  <a class="code" href="classTry.html">Try&lt;int&gt;</a> <a class="code" href="classnet_1_1IPNetwork.html#a119a8f122571f5532146b8130c0c0a50">prefix</a> = numify&lt;int&gt;(tokens[1]);</div>
+<div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;  <span class="keywordflow">if</span> (prefix.<a class="code" href="classTry.html#a0b98f95163b8a38daafd1651b043a276">isError</a>()) {</div>
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+<div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;</div>
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+<div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;}</div>
+<div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;</div>
+<div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;</div>
+<div class="line"><a name="l00369"></a><span class="lineno"><a class="line" href="classnet_1_1IPNetwork.html#af71cd4cc8ebff5ecf9bec6da3eb9d97d">  369</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="classnet_1_1IPNetwork.html">IPNetwork</a> <a class="code" href="classnet_1_1IPNetwork.html#af71cd4cc8ebff5ecf9bec6da3eb9d97d">IPNetwork::LOOPBACK_V4</a>()</div>
+<div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;{</div>
+<div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;  <span class="keywordflow">return</span> <a class="code" href="classnet_1_1IPNetwork.html#a8ebd0dd070b2e0bf10914225c98aac0f">parse</a>(<span class="stringliteral">&quot;127.0.0.1/8&quot;</span>, AF_INET).get();</div>
+<div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;}</div>
+<div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;</div>
+<div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;</div>
+<div class="line"><a name="l00375"></a><span class="lineno"><a class="line" href="classnet_1_1IPNetwork.html#a29645a80f4a422825dcd402f86f138e6">  375</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="classTry.html">Try&lt;IPNetwork&gt;</a> <a class="code" href="classnet_1_1IPNetwork.html#a29645a80f4a422825dcd402f86f138e6">IPNetwork::create</a>(<span class="keyword">const</span> <a class="code" href="classnet_1_1IP.html">IP</a>&amp; <a class="code" href="namespaceprocess_1_1network.html#a1987d4376ac5e2f04ad72e6c84c7569c">address</a>, <span class="keyword">const</span> <a class="code" href="classnet_1_1IP.html">IP</a>&amp; netmask)</div>
+<div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;{</div>
+<div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;  <span class="keywordflow">if</span> (address.<a class="code" href="classnet_1_1IP.html#ac7007d7cc8e87925e19d60515bf28c03">family</a>() != netmask.<a class="code" href="classnet_1_1IP.html#ac7007d7cc8e87925e19d60515bf28c03">family</a>()) {</div>
+<div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(</div>
+<div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;        <span class="stringliteral">&quot;The network families of the IP address &#39;&quot;</span> +</div>
+<div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;        <a class="code" href="namespacens.html#a28116b46e6543597a11733424cd1aa20">stringify</a>(address.<a class="code" href="classnet_1_1IP.html#ac7007d7cc8e87925e19d60515bf28c03">family</a>()) + <span class="stringliteral">&quot;&#39; and the IP netmask &#39;&quot;</span> +</div>
+<div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;        <a class="code" href="namespacens.html#a28116b46e6543597a11733424cd1aa20">stringify</a>(netmask.<a class="code" href="classnet_1_1IP.html#ac7007d7cc8e87925e19d60515bf28c03">family</a>()) + <span class="stringliteral">&quot;&#39; do not match&quot;</span>);</div>
+<div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;  }</div>
+<div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;</div>
+<div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;  <span class="keywordflow">switch</span> (address.<a class="code" href="classnet_1_1IP.html#ac7007d7cc8e87925e19d60515bf28c03">family</a>()) {</div>
+<div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;    <span class="keywordflow">case</span> AF_INET: {</div>
+<div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;      uint32_t mask = ntohl(netmask.<a class="code" href="classnet_1_1IP.html#a9b2b8da4b79c15e6632a9305a3d4c7cb">in</a>().get().s_addr);</div>
+<div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;      <span class="keywordflow">if</span> (((~mask + 1) &amp; (~mask)) != 0) {</div>
+<div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;        <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(<span class="stringliteral">&quot;Netmask is not valid&quot;</span>);</div>
+<div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;      }</div>
+<div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;</div>
+<div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;      <span class="keywordflow">return</span> <a class="code" href="classnet_1_1IPNetwork.html">IPNetwork</a>(address, netmask);</div>
+<div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;    }</div>
+<div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;    <span class="keywordflow">default</span>: {</div>
+<div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;      <a class="code" href="unreachable_8hpp.html#a0bc63b24b654ca433be7b97a3edde132">UNREACHABLE</a>();</div>
+<div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;    }</div>
+<div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;  }</div>
+<div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;}</div>
+<div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;</div>
+<div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;</div>
+<div class="line"><a name="l00400"></a><span class="lineno"><a class="line" href="classnet_1_1IPNetwork.html#a81a1ece4e0d162b0e08438f8ede51a7c">  400</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="classTry.html">Try&lt;IPNetwork&gt;</a> <a class="code" href="classnet_1_1IPNetwork.html#a29645a80f4a422825dcd402f86f138e6">IPNetwork::create</a>(<span class="keyword">const</span> <a class="code" href="classnet_1_1IP.html">IP</a>&amp; <a class="code" href="namespaceprocess_1_1network.html#a1987d4376ac5e2f04ad72e6c84c7569c">address</a>, <span class="keywordtype">int</span> <a class="code" href="namespaceos_1_1libraries_1_1Library.html#ab0e1a0e311049b6d685de1068e8f4690">prefix</a>)</div>
+<div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;{</div>
+<div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;  <span class="keywordflow">if</span> (prefix &lt; 0) {</div>
+<div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(<span class="stringliteral">&quot;Subnet prefix is negative&quot;</span>);</div>
+<div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;  }</div>
+<div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;</div>
+<div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;  <span class="keywordflow">switch</span> (address.<a class="code" href="classnet_1_1IP.html#ac7007d7cc8e87925e19d60515bf28c03">family</a>()) {</div>
+<div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;    <span class="keywordflow">case</span> AF_INET: {</div>
+<div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;      <span class="keywordflow">if</span> (prefix &gt; 32) {</div>
+<div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;        <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(<span class="stringliteral">&quot;Subnet prefix is larger than 32&quot;</span>);</div>
+<div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;      }</div>
+<div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;</div>
+<div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;      <span class="comment">// Avoid left-shifting by 32 bits when prefix is 0.</span></div>
+<div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;      uint32_t mask = 0;</div>
+<div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;      <span class="keywordflow">if</span> (prefix &gt; 0) {</div>
+<div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;        mask = 0xffffffff &lt;&lt; (32 - <a class="code" href="classnet_1_1IPNetwork.html#a119a8f122571f5532146b8130c0c0a50">prefix</a>);</div>
+<div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;      }</div>
+<div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;      <span class="keywordflow">return</span> <a class="code" href="classnet_1_1IPNetwork.html">IPNetwork</a>(address, <a class="code" href="classnet_1_1IP.html">IP</a>(mask));</div>
+<div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;    }</div>
+<div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;    <span class="keywordflow">default</span>: {</div>
+<div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160;      <a class="code" href="unreachable_8hpp.html#a0bc63b24b654ca433be7b97a3edde132">UNREACHABLE</a>();</div>
+<div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;    }</div>
+<div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;  }</div>
+<div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;}</div>
+<div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;</div>
+<div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;</div>
+<div class="line"><a name="l00426"></a><span class="lineno"><a class="line" href="classnet_1_1IPNetwork.html#ae3b0f30eb04ac069e377f62afae08a42">  426</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="classResult.html">Result&lt;IPNetwork&gt;</a> <a class="code" href="classnet_1_1IPNetwork.html#ae3b0f30eb04ac069e377f62afae08a42">IPNetwork::fromLinkDevice</a>(</div>
+<div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;    <span class="keyword">const</span> std::string&amp; <a class="code" href="namespaceos_1_1Shell.html#acfe16ef2b1146ad49a8651c0a457ce46">name</a>,</div>
+<div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;    <span class="keywordtype">int</span> family)</div>
+<div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;{</div>
+<div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;<span class="preprocessor">#if !defined(__linux__) &amp;&amp; !defined(__APPLE__) &amp;&amp; !defined(__FreeBSD__)</span></div>
+<div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;<span class="preprocessor"></span>  <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(<span class="stringliteral">&quot;Not implemented&quot;</span>);</div>
+<div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160;<span class="preprocessor">#else</span></div>
+<div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;<span class="preprocessor"></span>  <span class="keywordflow">if</span> (family != AF_INET) {</div>
+<div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(<span class="stringliteral">&quot;Unsupported family type: &quot;</span> + <a class="code" href="namespacens.html#a28116b46e6543597a11733424cd1aa20">stringify</a>(family));</div>
+<div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;  }</div>
+<div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;</div>
+<div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;  <span class="keyword">struct </span>ifaddrs* ifaddr = <span class="keyword">nullptr</span>;</div>
+<div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;  <span class="keywordflow">if</span> (getifaddrs(&amp;ifaddr) == -1) {</div>
+<div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="classErrnoError.html">ErrnoError</a>();</div>
+<div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;  }</div>
+<div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;</div>
+<div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;  <span class="comment">// Indicates whether the link device is found or not.</span></div>
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+<div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;</div>
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+<div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;</div>
+<div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;      <span class="keywordflow">if</span> (ifa-&gt;ifa_addr != <span class="keyword">nullptr</span> &amp;&amp; ifa-&gt;ifa_addr-&gt;sa_family == family) {</div>
+<div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;        <a class="code" href="classnet_1_1IP.html">IP</a> <a class="code" href="classnet_1_1IPNetwork.html#a9986306f9653245f55f4570771726a67">address</a> = <a class="code" href="classnet_1_1IP.html#ada206eb1ab14c032f071daf9b8c1b96c">IP::create</a>(*ifa-&gt;ifa_addr).get();</div>
+<div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;</div>
+<div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;        <span class="keywordflow">if</span> (ifa-&gt;ifa_netmask != <span class="keyword">nullptr</span> &amp;&amp;</div>
+<div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;            ifa-&gt;ifa_netmask-&gt;sa_family == family) {</div>
+<div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;          <a class="code" href="classnet_1_1IP.html">IP</a> <a class="code" href="classnet_1_1IPNetwork.html#a68e36065af86781ad06a285bcb120ed4">netmask</a> = <a class="code" href="classnet_1_1IP.html#ada206eb1ab14c032f071daf9b8c1b96c">IP::create</a>(*ifa-&gt;ifa_netmask).get();</div>
+<div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;</div>
+<div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;          freeifaddrs(ifaddr);</div>
+<div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;</div>
+<div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;          <a class="code" href="classTry.html">Try&lt;IPNetwork&gt;</a> network = <a class="code" href="classnet_1_1IPNetwork.html#a29645a80f4a422825dcd402f86f138e6">IPNetwork::create</a>(address, netmask);</div>
+<div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160;          <span class="keywordflow">if</span> (network.<a class="code" href="classTry.html#a0b98f95163b8a38daafd1651b043a276">isError</a>()) {</div>
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+<div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160;          }</div>
+<div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160;</div>
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+<div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160;        }</div>
+<div class="line"><a name="l00465"></a><span class="lineno">  465</span>&#160;</div>
+<div class="line"><a name="l00466"></a><span class="lineno">  466</span>&#160;        freeifaddrs(ifaddr);</div>
+<div class="line"><a name="l00467"></a><span class="lineno">  467</span>&#160;</div>
+<div class="line"><a name="l00468"></a><span class="lineno">  468</span>&#160;        <span class="comment">// Note that this is the case where netmask is not specified.</span></div>
+<div class="line"><a name="l00469"></a><span class="lineno">  469</span>&#160;        <span class="comment">// We&#39;ve seen such cases when VPN is used. In that case, a</span></div>
+<div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160;        <span class="comment">// default /32 prefix is used.</span></div>
+<div class="line"><a name="l00471"></a><span class="lineno">  471</span>&#160;        <a class="code" href="classTry.html">Try&lt;IPNetwork&gt;</a> network = <a class="code" href="classnet_1_1IPNetwork.html#a29645a80f4a422825dcd402f86f138e6">IPNetwork::create</a>(address, 32);</div>
+<div class="line"><a name="l00472"></a><span class="lineno">  472</span>&#160;        <span class="keywordflow">if</span> (network.<a class="code" href="classTry.html#a0b98f95163b8a38daafd1651b043a276">isError</a>()) {</div>
+<div class="line"><a name="l00473"></a><span class="lineno">  473</span>&#160;          <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(network.<a class="code" href="classTry.html#aec4a11ddd3c036e889d90b7eb6258ba7">error</a>());</div>
+<div class="line"><a name="l00474"></a><span class="lineno">  474</span>&#160;        }</div>
+<div class="line"><a name="l00475"></a><span class="lineno">  475</span>&#160;</div>
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+<div class="line"><a name="l00477"></a><span class="lineno">  477</span>&#160;      }</div>
+<div class="line"><a name="l00478"></a><span class="lineno">  478</span>&#160;    }</div>
+<div class="line"><a name="l00479"></a><span class="lineno">  479</span>&#160;  }</div>
+<div class="line"><a name="l00480"></a><span class="lineno">  480</span>&#160;</div>
+<div class="line"><a name="l00481"></a><span class="lineno">  481</span>&#160;  freeifaddrs(ifaddr);</div>
+<div class="line"><a name="l00482"></a><span class="lineno">  482</span>&#160;</div>
+<div class="line"><a name="l00483"></a><span class="lineno">  483</span>&#160;  <span class="keywordflow">if</span> (!found) {</div>
+<div class="line"><a name="l00484"></a><span class="lineno">  484</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(<span class="stringliteral">&quot;Cannot find the link device&quot;</span>);</div>
+<div class="line"><a name="l00485"></a><span class="lineno">  485</span>&#160;  }</div>
+<div class="line"><a name="l00486"></a><span class="lineno">  486</span>&#160;</div>
+<div class="line"><a name="l00487"></a><span class="lineno">  487</span>&#160;  <span class="keywordflow">return</span> <a class="code" href="structNone.html">None</a>();</div>
+<div class="line"><a name="l00488"></a><span class="lineno">  488</span>&#160;<span class="preprocessor">#endif</span></div>
+<div class="line"><a name="l00489"></a><span class="lineno">  489</span>&#160;<span class="preprocessor"></span>}</div>
+<div class="line"><a name="l00490"></a><span class="lineno">  490</span>&#160;</div>
+<div class="line"><a name="l00491"></a><span class="lineno">  491</span>&#160;</div>
+<div class="line"><a name="l00492"></a><span class="lineno">  492</span>&#160;<span class="comment">// Returns the string representation of the given IP network using the</span></div>
+<div class="line"><a name="l00493"></a><span class="lineno">  493</span>&#160;<span class="comment">// canonical dot-decimal form with prefix. For example: &quot;10.0.0.1/8&quot;.</span></div>
+<div class="line"><a name="l00494"></a><span class="lineno"><a class="line" href="namespacenet.html#a1af5f0d83c6273265de03ff4a23979d3">  494</a></span>&#160;<span class="keyword">inline</span> std::ostream&amp; <a class="code" href="namespacenet.html#ab2ed5173deb8f3daf281f9828613956d">operator&lt;&lt;</a>(std::ostream&amp; stream, <span class="keyword">const</span> <a class="code" href="classnet_1_1IPNetwork.html">IPNetwork</a>&amp; network)</div>
+<div class="line"><a name="l00495"></a><span class="lineno">  495</span>&#160;{</div>
+<div class="line"><a name="l00496"></a><span class="lineno">  496</span>&#160;  stream &lt;&lt; network.<a class="code" href="classnet_1_1IPNetwork.html#a9986306f9653245f55f4570771726a67">address</a>() &lt;&lt; <span class="stringliteral">&quot;/&quot;</span> &lt;&lt; network.<a class="code" href="classnet_1_1IPNetwork.html#a119a8f122571f5532146b8130c0c0a50">prefix</a>();</div>
+<div class="line"><a name="l00497"></a><span class="lineno">  497</span>&#160;</div>
+<div class="line"><a name="l00498"></a><span class="lineno">  498</span>&#160;  <span class="keywordflow">return</span> stream;</div>
+<div class="line"><a name="l00499"></a><span class="lineno">  499</span>&#160;}</div>
+<div class="line"><a name="l00500"></a><span class="lineno">  500</span>&#160;</div>
+<div class="line"><a name="l00501"></a><span class="lineno">  501</span>&#160;} <span class="comment">// namespace net {</span></div>
+<div class="line"><a name="l00502"></a><span class="lineno">  502</span>&#160;</div>
+<div class="line"><a name="l00503"></a><span class="lineno">  503</span>&#160;<span class="keyword">namespace </span>std {</div>
+<div class="line"><a name="l00504"></a><span class="lineno">  504</span>&#160;</div>
+<div class="line"><a name="l00505"></a><span class="lineno">  505</span>&#160;<span class="keyword">template</span> &lt;&gt;</div>
+<div class="line"><a name="l00506"></a><span class="lineno"><a class="line" href="structstd_1_1hash_3_01net_1_1IP_01_4.html">  506</a></span>&#160;<span class="keyword">struct </span>hash&lt;net::IP&gt;</div>
+<div class="line"><a name="l00507"></a><span class="lineno">  507</span>&#160;{</div>
+<div class="line"><a name="l00508"></a><span class="lineno"><a class="line" href="structstd_1_1hash_3_01net_1_1IP_01_4.html#af846150bb8c9fcf5e4063e3da50b1223">  508</a></span>&#160;  <span class="keyword">typedef</span> <span class="keywordtype">size_t</span> <a class="code" href="structstd_1_1hash_3_01net_1_1IP_01_4.html#af846150bb8c9fcf5e4063e3da50b1223">result_type</a>;</div>
+<div class="line"><a name="l00509"></a><span class="lineno">  509</span>&#160;</div>
+<div class="line"><a name="l00510"></a><span class="lineno"><a class="line" href="structstd_1_1hash_3_01net_1_1IP_01_4.html#a5e2eba58070d0460314c2aed7c10453a">  510</a></span>&#160;  <span class="keyword">typedef</span> <a class="code" href="classnet_1_1IP.html">net::IP</a> <a class="code" href="structstd_1_1hash_3_01net_1_1IP_01_4.html#a5e2eba58070d0460314c2aed7c10453a">argument_type</a>;</div>
+<div class="line"><a name="l00511"></a><span class="lineno">  511</span>&#160;</div>
+<div class="line"><a name="l00512"></a><span class="lineno"><a class="line" href="structstd_1_1hash_3_01net_1_1IP_01_4.html#af873f4d78fd40b8156b8cc657d2d4244">  512</a></span>&#160;  <a class="code" href="structstd_1_1hash_3_01net_1_1IP_01_4.html#af846150bb8c9fcf5e4063e3da50b1223">result_type</a> <a class="code" href="structstd_1_1hash_3_01net_1_1IP_01_4.html#af873f4d78fd40b8156b8cc657d2d4244">operator()</a>(<span class="keyword">const</span> <a class="code" href="classnet_1_1IP.html">argument_type</a>&amp; ip)<span class="keyword"> const</span></div>
+<div class="line"><a name="l00513"></a><span class="lineno">  513</span>&#160;<span class="keyword">  </span>{</div>
+<div class="line"><a name="l00514"></a><span class="lineno">  514</span>&#160;    <span class="keywordtype">size_t</span> seed = 0;</div>
+<div class="line"><a name="l00515"></a><span class="lineno">  515</span>&#160;</div>
+<div class="line"><a name="l00516"></a><span class="lineno">  516</span>&#160;    <span class="keywordflow">switch</span> (ip.<a class="code" href="classnet_1_1IP.html#ac7007d7cc8e87925e19d60515bf28c03">family</a>()) {</div>
+<div class="line"><a name="l00517"></a><span class="lineno">  517</span>&#160;      <span class="keywordflow">case</span> AF_INET:</div>
+<div class="line"><a name="l00518"></a><span class="lineno">  518</span>&#160;        boost::hash_combine(seed, htonl(ip.<a class="code" href="classnet_1_1IP.html#a9b2b8da4b79c15e6632a9305a3d4c7cb">in</a>().get().s_addr));</div>
+<div class="line"><a name="l00519"></a><span class="lineno">  519</span>&#160;        <span class="keywordflow">return</span> seed;</div>
+<div class="line"><a name="l00520"></a><span class="lineno">  520</span>&

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