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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<title>CommsChampion Ecosystem MQTT v3.1.1 Client: "Unsubscribe Operation Data Type and Functions"</title>
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<div id="projectname">CommsChampion Ecosystem MQTT v3.1.1 Client
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<div id="projectbrief">MQTT v3.1.1 Client Library.</div>
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<a href="#nested-classes">Classes</a> |
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<a href="#func-members">Functions</a> </div>
<div class="headertitle"><div class="title">"Unsubscribe Operation Data Type and Functions"</div></div>
</div><!--header-->
<div class="contents">
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="nested-classes" name="nested-classes"></a>
Classes</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structCC__Mqtt311UnsubscribeTopicConfig.html">CC_Mqtt311UnsubscribeTopicConfig</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">Topic filter configuration structure of the "unsubscribe" operation. <a href="structCC__Mqtt311UnsubscribeTopicConfig.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="typedef-members" name="typedef-members"></a>
Typedefs</h2></td></tr>
<tr class="memitem:ga55d1282b913db7cabf70dad0e687c78a" id="r_ga55d1282b913db7cabf70dad0e687c78a"><td class="memItemLeft" align="right" valign="top">typedef void(* </td><td class="memItemRight" valign="bottom"><a class="el" href="group__unsubscribe.html#ga55d1282b913db7cabf70dad0e687c78a">CC_Mqtt311UnsubscribeCompleteCb</a>) (void *data, <a class="el" href="group__unsubscribe.html#ga2481aeb3078fbec06952b6f7252dd44e">CC_Mqtt311UnsubscribeHandle</a> handle, <a class="el" href="group__global.html#gaf6bdf774d2591a042326994e6b10c7bd">CC_Mqtt311AsyncOpStatus</a> status)</td></tr>
<tr class="memdesc:ga55d1282b913db7cabf70dad0e687c78a"><td class="mdescLeft"> </td><td class="mdescRight">Callback used to report completion of the "unsubscribe" operation. <br /></td></tr>
<tr class="separator:ga55d1282b913db7cabf70dad0e687c78a"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga2481aeb3078fbec06952b6f7252dd44e" id="r_ga2481aeb3078fbec06952b6f7252dd44e"><td class="memItemLeft" align="right" valign="top">typedef struct CC_Mqtt311Unsubscribe * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__unsubscribe.html#ga2481aeb3078fbec06952b6f7252dd44e">CC_Mqtt311UnsubscribeHandle</a></td></tr>
<tr class="memdesc:ga2481aeb3078fbec06952b6f7252dd44e"><td class="mdescLeft"> </td><td class="mdescRight">Handle for "unsubscribe" operation. <br /></td></tr>
<tr class="separator:ga2481aeb3078fbec06952b6f7252dd44e"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="func-members" name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:gac65c867ff019d7ece59a5255fa322bfb" id="r_gac65c867ff019d7ece59a5255fa322bfb"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__global.html#ga1313593e8ce828061e8d32ae56c23d4e">CC_Mqtt311ErrorCode</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__unsubscribe.html#gac65c867ff019d7ece59a5255fa322bfb">cc_mqtt311_client_unsubscribe</a> (<a class="el" href="group__client.html#gab383150a0964cf3bd041a858f203040f">CC_Mqtt311ClientHandle</a> handle, const <a class="el" href="structCC__Mqtt311UnsubscribeTopicConfig.html">CC_Mqtt311UnsubscribeTopicConfig</a> *topicConfigs, unsigned topicConfigsCount, <a class="el" href="group__unsubscribe.html#ga55d1282b913db7cabf70dad0e687c78a">CC_Mqtt311UnsubscribeCompleteCb</a> cb, void *cbData)</td></tr>
<tr class="memdesc:gac65c867ff019d7ece59a5255fa322bfb"><td class="mdescLeft"> </td><td class="mdescRight">Prepare, configure, and send "unsubscribe" request in one go. <br /></td></tr>
<tr class="separator:gac65c867ff019d7ece59a5255fa322bfb"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga1a0f82012f48305d6a0bdcafb9947e2d" id="r_ga1a0f82012f48305d6a0bdcafb9947e2d"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__global.html#ga1313593e8ce828061e8d32ae56c23d4e">CC_Mqtt311ErrorCode</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__unsubscribe.html#ga1a0f82012f48305d6a0bdcafb9947e2d">cc_mqtt311_client_unsubscribe_cancel</a> (<a class="el" href="group__unsubscribe.html#ga2481aeb3078fbec06952b6f7252dd44e">CC_Mqtt311UnsubscribeHandle</a> handle)</td></tr>
<tr class="memdesc:ga1a0f82012f48305d6a0bdcafb9947e2d"><td class="mdescLeft"> </td><td class="mdescRight">Cancel the allocated "unsubscribe" operation. <br /></td></tr>
<tr class="separator:ga1a0f82012f48305d6a0bdcafb9947e2d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga542fc505d334e3ab88e47323b5fdbbcf" id="r_ga542fc505d334e3ab88e47323b5fdbbcf"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__global.html#ga1313593e8ce828061e8d32ae56c23d4e">CC_Mqtt311ErrorCode</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__unsubscribe.html#ga542fc505d334e3ab88e47323b5fdbbcf">cc_mqtt311_client_unsubscribe_config_topic</a> (<a class="el" href="group__unsubscribe.html#ga2481aeb3078fbec06952b6f7252dd44e">CC_Mqtt311UnsubscribeHandle</a> handle, const <a class="el" href="structCC__Mqtt311UnsubscribeTopicConfig.html">CC_Mqtt311UnsubscribeTopicConfig</a> *config)</td></tr>
<tr class="memdesc:ga542fc505d334e3ab88e47323b5fdbbcf"><td class="mdescLeft"> </td><td class="mdescRight">Add topic configuration of the "unsubscribe" operation. <br /></td></tr>
<tr class="separator:ga542fc505d334e3ab88e47323b5fdbbcf"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga81a6240244ef2ca4d4749f1628badef6" id="r_ga81a6240244ef2ca4d4749f1628badef6"><td class="memItemLeft" align="right" valign="top">unsigned </td><td class="memItemRight" valign="bottom"><a class="el" href="group__unsubscribe.html#ga81a6240244ef2ca4d4749f1628badef6">cc_mqtt311_client_unsubscribe_get_response_timeout</a> (<a class="el" href="group__unsubscribe.html#ga2481aeb3078fbec06952b6f7252dd44e">CC_Mqtt311UnsubscribeHandle</a> handle)</td></tr>
<tr class="memdesc:ga81a6240244ef2ca4d4749f1628badef6"><td class="mdescLeft"> </td><td class="mdescRight">Retrieve the configured the broker response timeout for the "unsubscribe" operation. <br /></td></tr>
<tr class="separator:ga81a6240244ef2ca4d4749f1628badef6"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga39014f617dd9be77ae35a3bff4a0c533" id="r_ga39014f617dd9be77ae35a3bff4a0c533"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__unsubscribe.html#ga39014f617dd9be77ae35a3bff4a0c533">cc_mqtt311_client_unsubscribe_init_config_topic</a> (<a class="el" href="structCC__Mqtt311UnsubscribeTopicConfig.html">CC_Mqtt311UnsubscribeTopicConfig</a> *config)</td></tr>
<tr class="memdesc:ga39014f617dd9be77ae35a3bff4a0c533"><td class="mdescLeft"> </td><td class="mdescRight">Intialize the <a class="el" href="structCC__Mqtt311UnsubscribeTopicConfig.html">CC_Mqtt311UnsubscribeTopicConfig</a> configuration structure. <br /></td></tr>
<tr class="separator:ga39014f617dd9be77ae35a3bff4a0c533"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaaae59e153bdfaa458055fdce1ec0c111" id="r_gaaae59e153bdfaa458055fdce1ec0c111"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__unsubscribe.html#ga2481aeb3078fbec06952b6f7252dd44e">CC_Mqtt311UnsubscribeHandle</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__unsubscribe.html#gaaae59e153bdfaa458055fdce1ec0c111">cc_mqtt311_client_unsubscribe_prepare</a> (<a class="el" href="group__client.html#gab383150a0964cf3bd041a858f203040f">CC_Mqtt311ClientHandle</a> handle, <a class="el" href="group__global.html#ga1313593e8ce828061e8d32ae56c23d4e">CC_Mqtt311ErrorCode</a> *ec)</td></tr>
<tr class="memdesc:gaaae59e153bdfaa458055fdce1ec0c111"><td class="mdescLeft"> </td><td class="mdescRight">Prepare "unsubscribe" operation. <br /></td></tr>
<tr class="separator:gaaae59e153bdfaa458055fdce1ec0c111"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaff704015ff227e667a6b71e3e03cfdf0" id="r_gaff704015ff227e667a6b71e3e03cfdf0"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__global.html#ga1313593e8ce828061e8d32ae56c23d4e">CC_Mqtt311ErrorCode</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__unsubscribe.html#gaff704015ff227e667a6b71e3e03cfdf0">cc_mqtt311_client_unsubscribe_send</a> (<a class="el" href="group__unsubscribe.html#ga2481aeb3078fbec06952b6f7252dd44e">CC_Mqtt311UnsubscribeHandle</a> handle, <a class="el" href="group__unsubscribe.html#ga55d1282b913db7cabf70dad0e687c78a">CC_Mqtt311UnsubscribeCompleteCb</a> cb, void *cbData)</td></tr>
<tr class="memdesc:gaff704015ff227e667a6b71e3e03cfdf0"><td class="mdescLeft"> </td><td class="mdescRight">Send the configured "unsubscribe" operation to broker. <br /></td></tr>
<tr class="separator:gaff704015ff227e667a6b71e3e03cfdf0"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga212ccb1603e5dd4567581e71896218ca" id="r_ga212ccb1603e5dd4567581e71896218ca"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__global.html#ga1313593e8ce828061e8d32ae56c23d4e">CC_Mqtt311ErrorCode</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__unsubscribe.html#ga212ccb1603e5dd4567581e71896218ca">cc_mqtt311_client_unsubscribe_set_response_timeout</a> (<a class="el" href="group__unsubscribe.html#ga2481aeb3078fbec06952b6f7252dd44e">CC_Mqtt311UnsubscribeHandle</a> handle, unsigned ms)</td></tr>
<tr class="memdesc:ga212ccb1603e5dd4567581e71896218ca"><td class="mdescLeft"> </td><td class="mdescRight">Configure the broker response timeout for the "unsubscribe" operation. <br /></td></tr>
<tr class="separator:ga212ccb1603e5dd4567581e71896218ca"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<h2 class="groupheader">Typedef Documentation</h2>
<a id="ga55d1282b913db7cabf70dad0e687c78a" name="ga55d1282b913db7cabf70dad0e687c78a"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga55d1282b913db7cabf70dad0e687c78a">◆ </a></span>CC_Mqtt311UnsubscribeCompleteCb</h2>
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<td class="memname">typedef void(* CC_Mqtt311UnsubscribeCompleteCb) (void *data, <a class="el" href="group__unsubscribe.html#ga2481aeb3078fbec06952b6f7252dd44e">CC_Mqtt311UnsubscribeHandle</a> handle, <a class="el" href="group__global.html#gaf6bdf774d2591a042326994e6b10c7bd">CC_Mqtt311AsyncOpStatus</a> status)</td>
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<p>Callback used to report completion of the "unsubscribe" operation. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">data</td><td>Pointer to user data object passed as last parameter to the <b><a class="el" href="group__unsubscribe.html#gaff704015ff227e667a6b71e3e03cfdf0" title="Send the configured "unsubscribe" operation to broker.">cc_mqtt311_client_unsubscribe_send()</a></b>. </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">handle</td><td>Handle returned by <b><a class="el" href="group__unsubscribe.html#gaaae59e153bdfaa458055fdce1ec0c111" title="Prepare "unsubscribe" operation.">cc_mqtt311_client_unsubscribe_prepare()</a></b> function. When the callback is invoked the handle is already invalid and cannot be used in any relevant function invocation, but it allows end application to identify the original "unsubscribe" operation and use the same callback function in parallel requests. </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">status</td><td>Status of the "unsubscribe" operation. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
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<h2 class="memtitle"><span class="permalink"><a href="#ga2481aeb3078fbec06952b6f7252dd44e">◆ </a></span>CC_Mqtt311UnsubscribeHandle</h2>
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<td class="memname">typedef struct CC_Mqtt311Unsubscribe* <a class="el" href="group__unsubscribe.html#ga2481aeb3078fbec06952b6f7252dd44e">CC_Mqtt311UnsubscribeHandle</a></td>
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</div><div class="memdoc">
<p>Handle for "unsubscribe" operation. </p>
<p>Returned by <a class="el" href="group__unsubscribe.html#gaaae59e153bdfaa458055fdce1ec0c111" title="Prepare "unsubscribe" operation.">cc_mqtt311_client_unsubscribe_prepare()</a> function. </p>
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</div>
<h2 class="groupheader">Function Documentation</h2>
<a id="gac65c867ff019d7ece59a5255fa322bfb" name="gac65c867ff019d7ece59a5255fa322bfb"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gac65c867ff019d7ece59a5255fa322bfb">◆ </a></span>cc_mqtt311_client_unsubscribe()</h2>
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<td class="memname"><a class="el" href="group__global.html#ga1313593e8ce828061e8d32ae56c23d4e">CC_Mqtt311ErrorCode</a> cc_mqtt311_client_unsubscribe </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__client.html#gab383150a0964cf3bd041a858f203040f">CC_Mqtt311ClientHandle</a> </td>
<td class="paramname"><em>handle</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="structCC__Mqtt311UnsubscribeTopicConfig.html">CC_Mqtt311UnsubscribeTopicConfig</a> * </td>
<td class="paramname"><em>topicConfigs</em>, </td>
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<td class="paramtype">unsigned </td>
<td class="paramname"><em>topicConfigsCount</em>, </td>
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<td></td>
<td class="paramtype"><a class="el" href="group__unsubscribe.html#ga55d1282b913db7cabf70dad0e687c78a">CC_Mqtt311UnsubscribeCompleteCb</a> </td>
<td class="paramname"><em>cb</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">void * </td>
<td class="paramname"><em>cbData</em> </td>
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<p>Prepare, configure, and send "unsubscribe" request in one go. </p>
<p>Abstracts away sequence of the following functions invocation: </p><ul>
<li><a class="el" href="group__unsubscribe.html#gaaae59e153bdfaa458055fdce1ec0c111">cc_mqtt311_client_unsubscribe_prepare()</a> </li>
<li><a class="el" href="group__unsubscribe.html#ga542fc505d334e3ab88e47323b5fdbbcf">cc_mqtt311_client_unsubscribe_config_topic()</a> (multiple times) </li>
<li><a class="el" href="group__unsubscribe.html#gaff704015ff227e667a6b71e3e03cfdf0">cc_mqtt311_client_unsubscribe_send()</a></li>
</ul>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">handle</td><td>Handle returned by <a class="el" href="group__client.html#ga74efa9fcc585c8d36be00638f15a76ba">cc_mqtt311_client_alloc()</a> function. </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">topicConfigs</td><td>Pointer to array of the topic configurations. </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">topicConfigsCount</td><td>Amount of the topic configurations in the array. </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">cb</td><td>Callback to be invoked when "unsubscribe" operation is complete. </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">cbData</td><td>Pointer to any user data structure. It will passed as one of the parameters in callback invocation. May be NULL. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Result code of the call. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ga1a0f82012f48305d6a0bdcafb9947e2d">◆ </a></span>cc_mqtt311_client_unsubscribe_cancel()</h2>
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<td class="memname"><a class="el" href="group__global.html#ga1313593e8ce828061e8d32ae56c23d4e">CC_Mqtt311ErrorCode</a> cc_mqtt311_client_unsubscribe_cancel </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__unsubscribe.html#ga2481aeb3078fbec06952b6f7252dd44e">CC_Mqtt311UnsubscribeHandle</a> </td>
<td class="paramname"><em>handle</em></td><td>)</td>
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<p>Cancel the allocated "unsubscribe" operation. </p>
<p>In case the <a class="el" href="group__unsubscribe.html#gaff704015ff227e667a6b71e3e03cfdf0">cc_mqtt311_client_unsubscribe_send()</a> function was successfully called before, the operation is cancelled <b>without</b> callback invocation. </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">handle</td><td>Handle returned by <a class="el" href="group__unsubscribe.html#gaaae59e153bdfaa458055fdce1ec0c111">cc_mqtt311_client_unsubscribe_prepare()</a> function. </td></tr>
</table>
</dd>
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<dl class="section return"><dt>Returns</dt><dd>Result code of the call. </dd></dl>
<dl class="section post"><dt>Postcondition</dt><dd>The handle of the "unsubscribe" operation is no longer valid and must be discarded. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ga542fc505d334e3ab88e47323b5fdbbcf">◆ </a></span>cc_mqtt311_client_unsubscribe_config_topic()</h2>
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<td class="memname"><a class="el" href="group__global.html#ga1313593e8ce828061e8d32ae56c23d4e">CC_Mqtt311ErrorCode</a> cc_mqtt311_client_unsubscribe_config_topic </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__unsubscribe.html#ga2481aeb3078fbec06952b6f7252dd44e">CC_Mqtt311UnsubscribeHandle</a> </td>
<td class="paramname"><em>handle</em>, </td>
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<td></td>
<td class="paramtype">const <a class="el" href="structCC__Mqtt311UnsubscribeTopicConfig.html">CC_Mqtt311UnsubscribeTopicConfig</a> * </td>
<td class="paramname"><em>config</em> </td>
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<p>Add topic configuration of the "unsubscribe" operation. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">handle</td><td>Handle returned by <a class="el" href="group__unsubscribe.html#gaaae59e153bdfaa458055fdce1ec0c111">cc_mqtt311_client_unsubscribe_prepare()</a> function. </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">config</td><td>Topic configuration structure. Must NOT be NULL. Does not need to be preserved after invocation. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Result code of the call. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ga81a6240244ef2ca4d4749f1628badef6">◆ </a></span>cc_mqtt311_client_unsubscribe_get_response_timeout()</h2>
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<td class="memname">unsigned cc_mqtt311_client_unsubscribe_get_response_timeout </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__unsubscribe.html#ga2481aeb3078fbec06952b6f7252dd44e">CC_Mqtt311UnsubscribeHandle</a> </td>
<td class="paramname"><em>handle</em></td><td>)</td>
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<p>Retrieve the configured the broker response timeout for the "unsubscribe" operation. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">handle</td><td>Handle returned by <a class="el" href="group__unsubscribe.html#gaaae59e153bdfaa458055fdce1ec0c111">cc_mqtt311_client_unsubscribe_prepare()</a> function. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>Response timeout duration in <b>milliseconds</b>. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ga39014f617dd9be77ae35a3bff4a0c533">◆ </a></span>cc_mqtt311_client_unsubscribe_init_config_topic()</h2>
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<td class="memname">void cc_mqtt311_client_unsubscribe_init_config_topic </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structCC__Mqtt311UnsubscribeTopicConfig.html">CC_Mqtt311UnsubscribeTopicConfig</a> * </td>
<td class="paramname"><em>config</em></td><td>)</td>
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<p>Intialize the <a class="el" href="structCC__Mqtt311UnsubscribeTopicConfig.html">CC_Mqtt311UnsubscribeTopicConfig</a> configuration structure. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[out]</td><td class="paramname">config</td><td>Configuration structure. Must not be NULL. </td></tr>
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</dd>
</dl>
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<a id="gaaae59e153bdfaa458055fdce1ec0c111" name="gaaae59e153bdfaa458055fdce1ec0c111"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gaaae59e153bdfaa458055fdce1ec0c111">◆ </a></span>cc_mqtt311_client_unsubscribe_prepare()</h2>
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<td class="memname"><a class="el" href="group__unsubscribe.html#ga2481aeb3078fbec06952b6f7252dd44e">CC_Mqtt311UnsubscribeHandle</a> cc_mqtt311_client_unsubscribe_prepare </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__client.html#gab383150a0964cf3bd041a858f203040f">CC_Mqtt311ClientHandle</a> </td>
<td class="paramname"><em>handle</em>, </td>
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<td></td>
<td class="paramtype"><a class="el" href="group__global.html#ga1313593e8ce828061e8d32ae56c23d4e">CC_Mqtt311ErrorCode</a> * </td>
<td class="paramname"><em>ec</em> </td>
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<p>Prepare "unsubscribe" operation. </p>
<p>For successful operation the client needs to be in the "connected" state. </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">handle</td><td>Handle returned by <a class="el" href="group__client.html#ga74efa9fcc585c8d36be00638f15a76ba">cc_mqtt311_client_alloc()</a> function. </td></tr>
<tr><td class="paramdir">[out]</td><td class="paramname">ec</td><td>Error code reporting result of the operation. Can be NULL. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Handle of the "unsubscribe" operation, will be NULL in case of failure. To analyze the reason failure use "ec" output parameter. </dd></dl>
<dl class="section post"><dt>Postcondition</dt><dd>The "unsubscribe" operation is allocated, use either <a class="el" href="group__unsubscribe.html#gaff704015ff227e667a6b71e3e03cfdf0">cc_mqtt311_client_unsubscribe_send()</a> or <a class="el" href="group__unsubscribe.html#ga1a0f82012f48305d6a0bdcafb9947e2d">cc_mqtt311_client_unsubscribe_cancel()</a> to prevent memory leaks. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#gaff704015ff227e667a6b71e3e03cfdf0">◆ </a></span>cc_mqtt311_client_unsubscribe_send()</h2>
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<td class="memname"><a class="el" href="group__global.html#ga1313593e8ce828061e8d32ae56c23d4e">CC_Mqtt311ErrorCode</a> cc_mqtt311_client_unsubscribe_send </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__unsubscribe.html#ga2481aeb3078fbec06952b6f7252dd44e">CC_Mqtt311UnsubscribeHandle</a> </td>
<td class="paramname"><em>handle</em>, </td>
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<td></td>
<td class="paramtype"><a class="el" href="group__unsubscribe.html#ga55d1282b913db7cabf70dad0e687c78a">CC_Mqtt311UnsubscribeCompleteCb</a> </td>
<td class="paramname"><em>cb</em>, </td>
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<td></td>
<td class="paramtype">void * </td>
<td class="paramname"><em>cbData</em> </td>
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<p>Send the configured "unsubscribe" operation to broker. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">handle</td><td>Handle returned by <a class="el" href="group__unsubscribe.html#gaaae59e153bdfaa458055fdce1ec0c111">cc_mqtt311_client_unsubscribe_prepare()</a> function. </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">cb</td><td>Callback to be invoked when "unsubscribe" operation is complete. </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">cbData</td><td>Pointer to any user data structure. It will passed as one of the parameters in callback invocation. May be NULL. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Result code of the call. </dd></dl>
<dl class="section pre"><dt>Precondition</dt><dd>At least one topic has been configured using <a class="el" href="group__unsubscribe.html#ga542fc505d334e3ab88e47323b5fdbbcf">cc_mqtt311_client_unsubscribe_config_topic</a>. </dd></dl>
<dl class="section post"><dt>Postcondition</dt><dd>The handle of the "unsubscribe" operation can be discarded. </dd>
<dd>
The provided callback will be invoked when the "unsubscribe" operation is complete <b> if and only if</b> the function returns <a class="el" href="group__global.html#gga1313593e8ce828061e8d32ae56c23d4ea3dac801d062eb0672aad9e4a69d52437">CC_Mqtt311ErrorCode_Success</a>. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ga212ccb1603e5dd4567581e71896218ca">◆ </a></span>cc_mqtt311_client_unsubscribe_set_response_timeout()</h2>
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<td class="memname"><a class="el" href="group__global.html#ga1313593e8ce828061e8d32ae56c23d4e">CC_Mqtt311ErrorCode</a> cc_mqtt311_client_unsubscribe_set_response_timeout </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__unsubscribe.html#ga2481aeb3078fbec06952b6f7252dd44e">CC_Mqtt311UnsubscribeHandle</a> </td>
<td class="paramname"><em>handle</em>, </td>
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<td class="paramtype">unsigned </td>
<td class="paramname"><em>ms</em> </td>
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<p>Configure the broker response timeout for the "unsubscribe" operation. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">handle</td><td>Handle returned by <a class="el" href="group__unsubscribe.html#gaaae59e153bdfaa458055fdce1ec0c111">cc_mqtt311_client_unsubscribe_prepare()</a> function. </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">ms</td><td>Response timeout duration in <b>milliseconds</b>. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Result code of the call. </dd></dl>
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