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|  <span id="projectnumber">1.0</span> |
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| <div id="projectbrief">The Paho MQTT C++ Client Library</div> |
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| <div class="title">topic.h</div> </div> |
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| <div class="contents"> |
| <a href="topic_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> </div> |
| <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">/*******************************************************************************</span></div> |
| <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * Copyright (c) 2013-2016 Frank Pagliughi <fpagliughi@mindspring.com></span></div> |
| <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * All rights reserved. This program and the accompanying materials</span></div> |
| <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * are made available under the terms of the Eclipse Public License v1.0</span></div> |
| <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * and Eclipse Distribution License v1.0 which accompany this distribution.</span></div> |
| <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * The Eclipse Public License is available at</span></div> |
| <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * http://www.eclipse.org/legal/epl-v10.html</span></div> |
| <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * and the Eclipse Distribution License is available at</span></div> |
| <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * http://www.eclipse.org/org/documents/edl-v10.php.</span></div> |
| <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * Contributors:</span></div> |
| <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * Frank Pagliughi - initial implementation and documentation</span></div> |
| <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> *******************************************************************************/</span></div> |
| <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> </div> |
| <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#ifndef __mqtt_topic_h</span></div> |
| <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor"></span><span class="preprocessor">#define __mqtt_topic_h</span></div> |
| <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor"></span></div> |
| <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include "MQTTAsync.h"</span></div> |
| <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include "<a class="code" href="delivery__token_8h.html">mqtt/delivery_token.h</a>"</span></div> |
| <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include "<a class="code" href="message_8h.html">mqtt/message.h</a>"</span></div> |
| <div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include "<a class="code" href="types_8h.html">mqtt/types.h</a>"</span></div> |
| <div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include <vector></span></div> |
| <div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div> |
| <div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="keyword">namespace </span>mqtt {</div> |
| <div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="keyword">class </span>iasync_client;</div> |
| <div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div> |
| <div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div> |
| <div class="line"><a name="l00042"></a><span class="lineno"><a class="line" href="classmqtt_1_1topic.html"> 42</a></span> <span class="keyword">class </span><a class="code" href="classmqtt_1_1topic.html">topic</a></div> |
| <div class="line"><a name="l00043"></a><span class="lineno"> 43</span> {</div> |
| <div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <a class="code" href="classmqtt_1_1iasync__client.html">iasync_client</a>& cli_;</div> |
| <div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordtype">string</span> name_;</div> |
| <div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordtype">int</span> qos_;</div> |
| <div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordtype">bool</span> retained_;</div> |
| <div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div> |
| <div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="keyword">public</span>:</div> |
| <div class="line"><a name="l00055"></a><span class="lineno"><a class="line" href="classmqtt_1_1topic.html#a5e94471a0af9ef527a90b5280c1cdf2b"> 55</a></span>  <span class="keyword">using</span> <a class="code" href="classmqtt_1_1topic.html#a5e94471a0af9ef527a90b5280c1cdf2b">ptr_t</a> = std::shared_ptr<topic>;</div> |
| <div class="line"><a name="l00057"></a><span class="lineno"><a class="line" href="classmqtt_1_1topic.html#a7501cd52070ff3e86f6f322e2c4c31fc"> 57</a></span>  <span class="keyword">using</span> <a class="code" href="classmqtt_1_1topic.html#a7501cd52070ff3e86f6f322e2c4c31fc">const_ptr_t</a> = std::shared_ptr<const topic>;</div> |
| <div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div> |
| <div class="line"><a name="l00066"></a><span class="lineno"><a class="line" href="classmqtt_1_1topic.html#a3f20abd05f9f841232d1ad81ecb814dd"> 66</a></span>  <a class="code" href="classmqtt_1_1topic.html#a3f20abd05f9f841232d1ad81ecb814dd">topic</a>(<a class="code" href="classmqtt_1_1iasync__client.html">iasync_client</a>& cli, <span class="keyword">const</span> <span class="keywordtype">string</span>& name,</div> |
| <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordtype">int</span> qos=<a class="code" href="classmqtt_1_1message.html#a9689553c0840b987f5aa064b3692e09c">message::DFLT_QOS</a>, <span class="keywordtype">bool</span> retained=<a class="code" href="classmqtt_1_1message.html#a4130d0db580fb11ee4a476712f000d48">message::DFLT_RETAINED</a>)</div> |
| <div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  : cli_(cli), name_(name), qos_(qos), retained_(retained) {}</div> |
| <div class="line"><a name="l00077"></a><span class="lineno"><a class="line" href="classmqtt_1_1topic.html#a05d1dd48249e94ae3d8c82b3a1b28372"> 77</a></span>  <span class="keyword">static</span> <a class="code" href="classmqtt_1_1topic.html#a5e94471a0af9ef527a90b5280c1cdf2b">ptr_t</a> <a class="code" href="classmqtt_1_1topic.html#a05d1dd48249e94ae3d8c82b3a1b28372">create</a>(<a class="code" href="classmqtt_1_1iasync__client.html">iasync_client</a>& cli, <span class="keyword">const</span> <span class="keywordtype">string</span>& name,</div> |
| <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordtype">int</span> qos=<a class="code" href="classmqtt_1_1message.html#a9689553c0840b987f5aa064b3692e09c">message::DFLT_QOS</a>,</div> |
| <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordtype">bool</span> retained=<a class="code" href="classmqtt_1_1message.html#a4130d0db580fb11ee4a476712f000d48">message::DFLT_RETAINED</a>) {</div> |
| <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">return</span> std::make_shared<topic>(cli, name, qos, retained);</div> |
| <div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  }</div> |
| <div class="line"><a name="l00086"></a><span class="lineno"><a class="line" href="classmqtt_1_1topic.html#a20bb6ded44502aa1dd1f235883cca8bf"> 86</a></span>  <a class="code" href="classmqtt_1_1iasync__client.html">iasync_client</a>& <a class="code" href="classmqtt_1_1topic.html#a20bb6ded44502aa1dd1f235883cca8bf">get_client</a>() { <span class="keywordflow">return</span> cli_; }</div> |
| <div class="line"><a name="l00091"></a><span class="lineno"><a class="line" href="classmqtt_1_1topic.html#a7cc52b6439851356b32459533dc96b55"> 91</a></span>  <span class="keyword">const</span> <span class="keywordtype">string</span>& <a class="code" href="classmqtt_1_1topic.html#a7cc52b6439851356b32459533dc96b55">get_name</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> name_; }</div> |
| <div class="line"><a name="l00096"></a><span class="lineno"><a class="line" href="classmqtt_1_1topic.html#aa155b7dc33fa0ef8ecace578cace2d4e"> 96</a></span>  <span class="keywordtype">int</span> <a class="code" href="classmqtt_1_1topic.html#aa155b7dc33fa0ef8ecace578cace2d4e">get_qos</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> qos_; }</div> |
| <div class="line"><a name="l00101"></a><span class="lineno"><a class="line" href="classmqtt_1_1topic.html#a570c51a6a1b004aa64754102239e3116"> 101</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classmqtt_1_1topic.html#a570c51a6a1b004aa64754102239e3116">get_retained</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> retained_; }</div> |
| <div class="line"><a name="l00106"></a><span class="lineno"><a class="line" href="classmqtt_1_1topic.html#a1503219df15de428ff11ecc69099a9b7"> 106</a></span>  <span class="keywordtype">void</span> <a class="code" href="classmqtt_1_1topic.html#a1503219df15de428ff11ecc69099a9b7">set_qos</a>(<span class="keywordtype">int</span> qos) { </div> |
| <div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <a class="code" href="classmqtt_1_1message.html#a5da9f7a3c9c437069e32f05a933a62aa">message::validate_qos</a>(qos);</div> |
| <div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  qos_ = qos; </div> |
| <div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  }</div> |
| <div class="line"><a name="l00114"></a><span class="lineno"><a class="line" href="classmqtt_1_1topic.html#a6464a44498c4ceb14d7038ec45b88ab0"> 114</a></span>  <span class="keywordtype">void</span> <a class="code" href="classmqtt_1_1topic.html#a6464a44498c4ceb14d7038ec45b88ab0">set_retained</a>(<span class="keywordtype">bool</span> retained) { retained_ = retained; }</div> |
| <div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  delivery_token_ptr <a class="code" href="classmqtt_1_1topic.html#a245cb5fa74d692edf1f069b6cbdd2809">publish</a>(<span class="keyword">const</span> <span class="keywordtype">void</span>* payload, <span class="keywordtype">size_t</span> n);</div> |
| <div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  delivery_token_ptr <a class="code" href="classmqtt_1_1topic.html#a245cb5fa74d692edf1f069b6cbdd2809">publish</a>(<span class="keyword">const</span> <span class="keywordtype">void</span>* payload, <span class="keywordtype">size_t</span> n,</div> |
| <div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordtype">int</span> qos, <span class="keywordtype">bool</span> retained);</div> |
| <div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  delivery_token_ptr <a class="code" href="classmqtt_1_1topic.html#a245cb5fa74d692edf1f069b6cbdd2809">publish</a>(<a class="code" href="classmqtt_1_1buffer__ref.html">binary_ref</a> payload);</div> |
| <div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  delivery_token_ptr <a class="code" href="classmqtt_1_1topic.html#a245cb5fa74d692edf1f069b6cbdd2809">publish</a>(<a class="code" href="classmqtt_1_1buffer__ref.html">binary_ref</a> payload, <span class="keywordtype">int</span> qos, <span class="keywordtype">bool</span> retained);</div> |
| <div class="line"><a name="l00160"></a><span class="lineno"><a class="line" href="classmqtt_1_1topic.html#ae38b14f29acefc573904e4ac71e69791"> 160</a></span>  <span class="keywordtype">string</span> <a class="code" href="classmqtt_1_1topic.html#ae38b14f29acefc573904e4ac71e69791">to_string</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> name_; }</div> |
| <div class="line"><a name="l00161"></a><span class="lineno"> 161</span> };</div> |
| <div class="line"><a name="l00162"></a><span class="lineno"> 162</span> </div> |
| <div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="keyword">using</span> topic_ptr = <a class="code" href="classmqtt_1_1topic.html#a5e94471a0af9ef527a90b5280c1cdf2b">topic::ptr_t</a> ;</div> |
| <div class="line"><a name="l00165"></a><span class="lineno"> 165</span> </div> |
| <div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="keyword">using</span> const_topic_ptr = <a class="code" href="classmqtt_1_1topic.html#a7501cd52070ff3e86f6f322e2c4c31fc">topic::const_ptr_t</a> ;</div> |
| <div class="line"><a name="l00168"></a><span class="lineno"> 168</span> </div> |
| <div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="comment">// end namespace mqtt</span></div> |
| <div class="line"><a name="l00171"></a><span class="lineno"> 171</span> }</div> |
| <div class="line"><a name="l00172"></a><span class="lineno"> 172</span> </div> |
| <div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="preprocessor">#endif // __mqtt_topic_h</span></div> |
| <div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="preprocessor"></span></div> |
| <div class="ttc" id="types_8h_html"><div class="ttname"><a href="types_8h.html">types.h</a></div><div class="ttdoc">Basic types and type conversions for the Paho MQTT C++ library. </div></div> |
| <div class="ttc" id="classmqtt_1_1topic_html_a3f20abd05f9f841232d1ad81ecb814dd"><div class="ttname"><a href="classmqtt_1_1topic.html#a3f20abd05f9f841232d1ad81ecb814dd">mqtt::topic::topic</a></div><div class="ttdeci">topic(iasync_client &cli, const string &name, int qos=message::DFLT_QOS, bool retained=message::DFLT_RETAINED)</div><div class="ttdoc">Construct an MQTT topic destination for messages. </div><div class="ttdef"><b>Definition:</b> topic.h:66</div></div> |
| <div class="ttc" id="classmqtt_1_1topic_html_a7501cd52070ff3e86f6f322e2c4c31fc"><div class="ttname"><a href="classmqtt_1_1topic.html#a7501cd52070ff3e86f6f322e2c4c31fc">mqtt::topic::const_ptr_t</a></div><div class="ttdeci">std::shared_ptr< const topic > const_ptr_t</div><div class="ttdoc">A smart/shared pointer to this class. </div><div class="ttdef"><b>Definition:</b> topic.h:57</div></div> |
| <div class="ttc" id="classmqtt_1_1topic_html_a7cc52b6439851356b32459533dc96b55"><div class="ttname"><a href="classmqtt_1_1topic.html#a7cc52b6439851356b32459533dc96b55">mqtt::topic::get_name</a></div><div class="ttdeci">const string & get_name() const </div><div class="ttdoc">Gets the name of the topic. </div><div class="ttdef"><b>Definition:</b> topic.h:91</div></div> |
| <div class="ttc" id="classmqtt_1_1topic_html_a570c51a6a1b004aa64754102239e3116"><div class="ttname"><a href="classmqtt_1_1topic.html#a570c51a6a1b004aa64754102239e3116">mqtt::topic::get_retained</a></div><div class="ttdeci">bool get_retained() const </div><div class="ttdoc">Gets the default retained flag used for this topic. </div><div class="ttdef"><b>Definition:</b> topic.h:101</div></div> |
| <div class="ttc" id="classmqtt_1_1topic_html_a1503219df15de428ff11ecc69099a9b7"><div class="ttname"><a href="classmqtt_1_1topic.html#a1503219df15de428ff11ecc69099a9b7">mqtt::topic::set_qos</a></div><div class="ttdeci">void set_qos(int qos)</div><div class="ttdoc">Sets the default quality of service for this topic. </div><div class="ttdef"><b>Definition:</b> topic.h:106</div></div> |
| <div class="ttc" id="classmqtt_1_1topic_html"><div class="ttname"><a href="classmqtt_1_1topic.html">mqtt::topic</a></div><div class="ttdoc">Represents a topic destination, used for publish/subscribe messaging. </div><div class="ttdef"><b>Definition:</b> topic.h:42</div></div> |
| <div class="ttc" id="message_8h_html"><div class="ttname"><a href="message_8h.html">message.h</a></div><div class="ttdoc">Declaration of MQTT message class. </div></div> |
| <div class="ttc" id="classmqtt_1_1buffer__ref_html"><div class="ttname"><a href="classmqtt_1_1buffer__ref.html">mqtt::buffer_ref< char ></a></div></div> |
| <div class="ttc" id="classmqtt_1_1topic_html_a20bb6ded44502aa1dd1f235883cca8bf"><div class="ttname"><a href="classmqtt_1_1topic.html#a20bb6ded44502aa1dd1f235883cca8bf">mqtt::topic::get_client</a></div><div class="ttdeci">iasync_client & get_client()</div><div class="ttdoc">Gets a reference to the MQTT client used by this topic. </div><div class="ttdef"><b>Definition:</b> topic.h:86</div></div> |
| <div class="ttc" id="classmqtt_1_1iasync__client_html"><div class="ttname"><a href="classmqtt_1_1iasync__client.html">mqtt::iasync_client</a></div><div class="ttdoc">Enables an application to communicate with an MQTT server using non-blocking methods. </div><div class="ttdef"><b>Definition:</b> iasync_client.h:57</div></div> |
| <div class="ttc" id="classmqtt_1_1topic_html_a245cb5fa74d692edf1f069b6cbdd2809"><div class="ttname"><a href="classmqtt_1_1topic.html#a245cb5fa74d692edf1f069b6cbdd2809">mqtt::topic::publish</a></div><div class="ttdeci">delivery_token_ptr publish(const void *payload, size_t n)</div><div class="ttdoc">Publishes a message on the topic using the default QoS and retained flag. </div></div> |
| <div class="ttc" id="classmqtt_1_1topic_html_a5e94471a0af9ef527a90b5280c1cdf2b"><div class="ttname"><a href="classmqtt_1_1topic.html#a5e94471a0af9ef527a90b5280c1cdf2b">mqtt::topic::ptr_t</a></div><div class="ttdeci">std::shared_ptr< topic > ptr_t</div><div class="ttdoc">A smart/shared pointer to this class. </div><div class="ttdef"><b>Definition:</b> topic.h:55</div></div> |
| <div class="ttc" id="classmqtt_1_1message_html_a4130d0db580fb11ee4a476712f000d48"><div class="ttname"><a href="classmqtt_1_1message.html#a4130d0db580fb11ee4a476712f000d48">mqtt::message::DFLT_RETAINED</a></div><div class="ttdeci">static constexpr bool DFLT_RETAINED</div><div class="ttdoc">The default retained flag. </div><div class="ttdef"><b>Definition:</b> message.h:58</div></div> |
| <div class="ttc" id="classmqtt_1_1topic_html_a05d1dd48249e94ae3d8c82b3a1b28372"><div class="ttname"><a href="classmqtt_1_1topic.html#a05d1dd48249e94ae3d8c82b3a1b28372">mqtt::topic::create</a></div><div class="ttdeci">static ptr_t create(iasync_client &cli, const string &name, int qos=message::DFLT_QOS, bool retained=message::DFLT_RETAINED)</div><div class="ttdoc">Creates a new topic. </div><div class="ttdef"><b>Definition:</b> topic.h:77</div></div> |
| <div class="ttc" id="classmqtt_1_1topic_html_ae38b14f29acefc573904e4ac71e69791"><div class="ttname"><a href="classmqtt_1_1topic.html#ae38b14f29acefc573904e4ac71e69791">mqtt::topic::to_string</a></div><div class="ttdeci">string to_string() const </div><div class="ttdoc">Returns a string representation of this topic. </div><div class="ttdef"><b>Definition:</b> topic.h:160</div></div> |
| <div class="ttc" id="classmqtt_1_1topic_html_a6464a44498c4ceb14d7038ec45b88ab0"><div class="ttname"><a href="classmqtt_1_1topic.html#a6464a44498c4ceb14d7038ec45b88ab0">mqtt::topic::set_retained</a></div><div class="ttdeci">void set_retained(bool retained)</div><div class="ttdoc">Sets the default retained flag used for this topic. </div><div class="ttdef"><b>Definition:</b> topic.h:114</div></div> |
| <div class="ttc" id="delivery__token_8h_html"><div class="ttname"><a href="delivery__token_8h.html">delivery_token.h</a></div><div class="ttdoc">Declaration of MQTT delivery_token class. </div></div> |
| <div class="ttc" id="classmqtt_1_1message_html_a5da9f7a3c9c437069e32f05a933a62aa"><div class="ttname"><a href="classmqtt_1_1message.html#a5da9f7a3c9c437069e32f05a933a62aa">mqtt::message::validate_qos</a></div><div class="ttdeci">static void validate_qos(int qos)</div><div class="ttdoc">Determines if the QOS value is a valid one. </div><div class="ttdef"><b>Definition:</b> message.h:320</div></div> |
| <div class="ttc" id="classmqtt_1_1message_html_a9689553c0840b987f5aa064b3692e09c"><div class="ttname"><a href="classmqtt_1_1message.html#a9689553c0840b987f5aa064b3692e09c">mqtt::message::DFLT_QOS</a></div><div class="ttdeci">static constexpr int DFLT_QOS</div><div class="ttdoc">The default QoS for a message. </div><div class="ttdef"><b>Definition:</b> message.h:56</div></div> |
| <div class="ttc" id="classmqtt_1_1topic_html_aa155b7dc33fa0ef8ecace578cace2d4e"><div class="ttname"><a href="classmqtt_1_1topic.html#aa155b7dc33fa0ef8ecace578cace2d4e">mqtt::topic::get_qos</a></div><div class="ttdeci">int get_qos() const </div><div class="ttdoc">Gets the default quality of service for this topic. </div><div class="ttdef"><b>Definition:</b> topic.h:96</div></div> |
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