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<a href="#func-members">Functions</a> &#124;
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<p>Functions dealing with the MQTT protocol exchanges.  
<a href="#details">More...</a></p>
<div class="textblock"><code>#include &lt;stdlib.h&gt;</code><br />
<code>#include &lt;string.h&gt;</code><br />
<code>#include &lt;ctype.h&gt;</code><br />
<code>#include &quot;MQTTProtocolOut.h&quot;</code><br />
<code>#include &quot;StackTrace.h&quot;</code><br />
<code>#include &quot;Heap.h&quot;</code><br />
<code>#include &quot;WebSocket.h&quot;</code><br />
<code>#include &quot;Proxy.h&quot;</code><br />
<code>#include &quot;Base64.h&quot;</code><br />
</div><div class="textblock"><div class="dynheader">
Include dependency graph for MQTTProtocolOut.c:</div>
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Functions</h2></td></tr>
<tr class="memitem:ae9a2970a33893540e42ff5a8d95411dc"><td class="memItemLeft" align="right" valign="top">size_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolOut_8c.html#ae9a2970a33893540e42ff5a8d95411dc">MQTTProtocol_addressPort</a> (const char *uri, int *port, const char **topic, int default_port)</td></tr>
<tr class="memdesc:ae9a2970a33893540e42ff5a8d95411dc"><td class="mdescLeft">&#160;</td><td class="mdescRight">Separates an address:port into two separate values.  <a href="MQTTProtocolOut_8c.html#ae9a2970a33893540e42ff5a8d95411dc">More...</a><br /></td></tr>
<tr class="separator:ae9a2970a33893540e42ff5a8d95411dc"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6b8949d7db9299fa5fd940e8e58f31b6"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolOut_8c.html#a6b8949d7db9299fa5fd940e8e58f31b6">MQTTProtocol_specialChars</a> (char *p0, char *p1, b64_size_t *basic_auth_in_len)</td></tr>
<tr class="memdesc:a6b8949d7db9299fa5fd940e8e58f31b6"><td class="mdescLeft">&#160;</td><td class="mdescRight">Allow user or password characters to be expressed in the form of XX, XX being the hexadecimal value of the character.  <a href="MQTTProtocolOut_8c.html#a6b8949d7db9299fa5fd940e8e58f31b6">More...</a><br /></td></tr>
<tr class="separator:a6b8949d7db9299fa5fd940e8e58f31b6"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9c80eda45033b7db33b09a02218cb8c9"><td class="memItemLeft" align="right" valign="top"><a id="a9c80eda45033b7db33b09a02218cb8c9"></a>
int&#160;</td><td class="memItemRight" valign="bottom"><b>MQTTProtocol_setHTTPProxy</b> (<a class="el" href="structClients.html">Clients</a> *aClient, char *source, char **dest, char **auth_dest, char *prefix)</td></tr>
<tr class="separator:a9c80eda45033b7db33b09a02218cb8c9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad9baf307647cbe6516eadbbe975cda8c"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolOut_8c.html#ad9baf307647cbe6516eadbbe975cda8c">MQTTProtocol_connect</a> (const char *ip_address, <a class="el" href="structClients.html">Clients</a> *aClient, int websocket, int MQTTVersion, <a class="el" href="structMQTTProperties.html">MQTTProperties</a> *connectProperties, <a class="el" href="structMQTTProperties.html">MQTTProperties</a> *willProperties)</td></tr>
<tr class="memdesc:ad9baf307647cbe6516eadbbe975cda8c"><td class="mdescLeft">&#160;</td><td class="mdescRight">MQTT outgoing connect processing for a client.  <a href="MQTTProtocolOut_8c.html#ad9baf307647cbe6516eadbbe975cda8c">More...</a><br /></td></tr>
<tr class="separator:ad9baf307647cbe6516eadbbe975cda8c"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad298c92c74b5f1acda774fc95e3d61c3"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolOut_8c.html#ad298c92c74b5f1acda774fc95e3d61c3">MQTTProtocol_handlePingresps</a> (void *pack, SOCKET sock)</td></tr>
<tr class="memdesc:ad298c92c74b5f1acda774fc95e3d61c3"><td class="mdescLeft">&#160;</td><td class="mdescRight">Process an incoming pingresp packet for a socket.  <a href="MQTTProtocolOut_8c.html#ad298c92c74b5f1acda774fc95e3d61c3">More...</a><br /></td></tr>
<tr class="separator:ad298c92c74b5f1acda774fc95e3d61c3"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a460d021d06dd24cf975dfe20e17ab1ba"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolOut_8c.html#a460d021d06dd24cf975dfe20e17ab1ba">MQTTProtocol_subscribe</a> (<a class="el" href="structClients.html">Clients</a> *client, <a class="el" href="structList.html">List</a> *topics, <a class="el" href="structList.html">List</a> *qoss, int msgID, <a class="el" href="structMQTTSubscribe__options.html">MQTTSubscribe_options</a> *opts, <a class="el" href="structMQTTProperties.html">MQTTProperties</a> *props)</td></tr>
<tr class="memdesc:a460d021d06dd24cf975dfe20e17ab1ba"><td class="mdescLeft">&#160;</td><td class="mdescRight">MQTT outgoing subscribe processing for a client.  <a href="MQTTProtocolOut_8c.html#a460d021d06dd24cf975dfe20e17ab1ba">More...</a><br /></td></tr>
<tr class="separator:a460d021d06dd24cf975dfe20e17ab1ba"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a5424115bf427436c2d40058f15261ed0"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolOut_8c.html#a5424115bf427436c2d40058f15261ed0">MQTTProtocol_handleSubacks</a> (void *pack, SOCKET sock)</td></tr>
<tr class="memdesc:a5424115bf427436c2d40058f15261ed0"><td class="mdescLeft">&#160;</td><td class="mdescRight">Process an incoming suback packet for a socket.  <a href="MQTTProtocolOut_8c.html#a5424115bf427436c2d40058f15261ed0">More...</a><br /></td></tr>
<tr class="separator:a5424115bf427436c2d40058f15261ed0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a69083f5a059d129d1030140ec1cd3d58"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolOut_8c.html#a69083f5a059d129d1030140ec1cd3d58">MQTTProtocol_unsubscribe</a> (<a class="el" href="structClients.html">Clients</a> *client, <a class="el" href="structList.html">List</a> *topics, int msgID, <a class="el" href="structMQTTProperties.html">MQTTProperties</a> *props)</td></tr>
<tr class="memdesc:a69083f5a059d129d1030140ec1cd3d58"><td class="mdescLeft">&#160;</td><td class="mdescRight">MQTT outgoing unsubscribe processing for a client.  <a href="MQTTProtocolOut_8c.html#a69083f5a059d129d1030140ec1cd3d58">More...</a><br /></td></tr>
<tr class="separator:a69083f5a059d129d1030140ec1cd3d58"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a0b9648549a1a132eecadb74df2e84f57"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolOut_8c.html#a0b9648549a1a132eecadb74df2e84f57">MQTTProtocol_handleUnsubacks</a> (void *pack, SOCKET sock)</td></tr>
<tr class="memdesc:a0b9648549a1a132eecadb74df2e84f57"><td class="mdescLeft">&#160;</td><td class="mdescRight">Process an incoming unsuback packet for a socket.  <a href="MQTTProtocolOut_8c.html#a0b9648549a1a132eecadb74df2e84f57">More...</a><br /></td></tr>
<tr class="separator:a0b9648549a1a132eecadb74df2e84f57"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a4f914518a8e2d68cc9d9fbb2c22cdf6f"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTProtocolOut_8c.html#a4f914518a8e2d68cc9d9fbb2c22cdf6f">MQTTProtocol_handleDisconnects</a> (void *pack, SOCKET sock)</td></tr>
<tr class="memdesc:a4f914518a8e2d68cc9d9fbb2c22cdf6f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Process an incoming disconnect packet for a socket.  <a href="MQTTProtocolOut_8c.html#a4f914518a8e2d68cc9d9fbb2c22cdf6f">More...</a><br /></td></tr>
<tr class="separator:a4f914518a8e2d68cc9d9fbb2c22cdf6f"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<a class="el" href="structClientStates.html">ClientStates</a> *&#160;</td><td class="memItemRight" valign="bottom"><b>bstate</b></td></tr>
<tr class="separator:a2f44b42678b96ba591f6042671e3ba6b"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Functions dealing with the MQTT protocol exchanges. </p>
<p>Some other related functions are in the MQTTProtocolClient module </p>
</div><h2 class="groupheader">Function Documentation</h2>
<a id="ae9a2970a33893540e42ff5a8d95411dc"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ae9a2970a33893540e42ff5a8d95411dc">&#9670;&nbsp;</a></span>MQTTProtocol_addressPort()</h2>

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          <td class="memname">size_t MQTTProtocol_addressPort </td>
          <td>(</td>
          <td class="paramtype">const char *&#160;</td>
          <td class="paramname"><em>uri</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int *&#160;</td>
          <td class="paramname"><em>port</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const char **&#160;</td>
          <td class="paramname"><em>topic</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>default_port</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Separates an address:port into two separate values. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">uri</td><td>the input string - hostname:port </td></tr>
    <tr><td class="paramdir">[out]</td><td class="paramname">port</td><td>the returned port integer </td></tr>
    <tr><td class="paramdir">[out]</td><td class="paramname">topic</td><td>optional topic portion of the address starting with '/' </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the address string </dd></dl>

</div>
</div>
<a id="ad9baf307647cbe6516eadbbe975cda8c"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ad9baf307647cbe6516eadbbe975cda8c">&#9670;&nbsp;</a></span>MQTTProtocol_connect()</h2>

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          <td class="memname">int MQTTProtocol_connect </td>
          <td>(</td>
          <td class="paramtype">const char *&#160;</td>
          <td class="paramname"><em>ip_address</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="structClients.html">Clients</a> *&#160;</td>
          <td class="paramname"><em>aClient</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>websocket</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>MQTTVersion</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="structMQTTProperties.html">MQTTProperties</a> *&#160;</td>
          <td class="paramname"><em>connectProperties</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="structMQTTProperties.html">MQTTProperties</a> *&#160;</td>
          <td class="paramname"><em>willProperties</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>MQTT outgoing connect processing for a client. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">ip_address</td><td>the TCP address:port to connect to </td></tr>
    <tr><td class="paramname">aClient</td><td>a structure with all MQTT data needed </td></tr>
    <tr><td class="paramname">int</td><td>ssl </td></tr>
    <tr><td class="paramname">int</td><td>MQTTVersion the MQTT version to connect with (3 or 4) </td></tr>
    <tr><td class="paramname">long</td><td>timeout how long to wait for a new socket to be created </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>return code </dd></dl>

</div>
</div>
<a id="a4f914518a8e2d68cc9d9fbb2c22cdf6f"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a4f914518a8e2d68cc9d9fbb2c22cdf6f">&#9670;&nbsp;</a></span>MQTTProtocol_handleDisconnects()</h2>

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          <td class="memname">int MQTTProtocol_handleDisconnects </td>
          <td>(</td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>pack</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">SOCKET&#160;</td>
          <td class="paramname"><em>sock</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Process an incoming disconnect packet for a socket. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">pack</td><td>pointer to the disconnect packet </td></tr>
    <tr><td class="paramname">sock</td><td>the socket on which the packet was received </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>completion code </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ad298c92c74b5f1acda774fc95e3d61c3">&#9670;&nbsp;</a></span>MQTTProtocol_handlePingresps()</h2>

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        <tr>
          <td class="memname">int MQTTProtocol_handlePingresps </td>
          <td>(</td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>pack</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">SOCKET&#160;</td>
          <td class="paramname"><em>sock</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Process an incoming pingresp packet for a socket. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">pack</td><td>pointer to the publish packet </td></tr>
    <tr><td class="paramname">sock</td><td>the socket on which the packet was received </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>completion code </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a5424115bf427436c2d40058f15261ed0">&#9670;&nbsp;</a></span>MQTTProtocol_handleSubacks()</h2>

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          <td class="memname">int MQTTProtocol_handleSubacks </td>
          <td>(</td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>pack</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">SOCKET&#160;</td>
          <td class="paramname"><em>sock</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
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<p>Process an incoming suback packet for a socket. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">pack</td><td>pointer to the publish packet </td></tr>
    <tr><td class="paramname">sock</td><td>the socket on which the packet was received </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>completion code </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a0b9648549a1a132eecadb74df2e84f57">&#9670;&nbsp;</a></span>MQTTProtocol_handleUnsubacks()</h2>

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          <td class="memname">int MQTTProtocol_handleUnsubacks </td>
          <td>(</td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>pack</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">SOCKET&#160;</td>
          <td class="paramname"><em>sock</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Process an incoming unsuback packet for a socket. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">pack</td><td>pointer to the publish packet </td></tr>
    <tr><td class="paramname">sock</td><td>the socket on which the packet was received </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>completion code </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a6b8949d7db9299fa5fd940e8e58f31b6">&#9670;&nbsp;</a></span>MQTTProtocol_specialChars()</h2>

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          <td class="memname">void MQTTProtocol_specialChars </td>
          <td>(</td>
          <td class="paramtype">char *&#160;</td>
          <td class="paramname"><em>p0</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">char *&#160;</td>
          <td class="paramname"><em>p1</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">b64_size_t *&#160;</td>
          <td class="paramname"><em>basic_auth_in_len</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Allow user or password characters to be expressed in the form of XX, XX being the hexadecimal value of the character. </p>
<p>This will avoid problems when a user code or a password contains a '@' or another special character ('' included) </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">p0</td><td>output string </td></tr>
    <tr><td class="paramname">p1</td><td>input string </td></tr>
    <tr><td class="paramname">basic_auth_in_len</td><td></td></tr>
  </table>
  </dd>
</dl>

</div>
</div>
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<h2 class="memtitle"><span class="permalink"><a href="#a460d021d06dd24cf975dfe20e17ab1ba">&#9670;&nbsp;</a></span>MQTTProtocol_subscribe()</h2>

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          <td class="memname">int MQTTProtocol_subscribe </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="structClients.html">Clients</a> *&#160;</td>
          <td class="paramname"><em>client</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="structList.html">List</a> *&#160;</td>
          <td class="paramname"><em>topics</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="structList.html">List</a> *&#160;</td>
          <td class="paramname"><em>qoss</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>msgID</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="structMQTTSubscribe__options.html">MQTTSubscribe_options</a> *&#160;</td>
          <td class="paramname"><em>opts</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="structMQTTProperties.html">MQTTProperties</a> *&#160;</td>
          <td class="paramname"><em>props</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>MQTT outgoing subscribe processing for a client. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">client</td><td>the client structure </td></tr>
    <tr><td class="paramname">topics</td><td>list of topics </td></tr>
    <tr><td class="paramname">qoss</td><td>corresponding list of QoSs </td></tr>
    <tr><td class="paramname">opts</td><td>MQTT 5.0 subscribe options </td></tr>
    <tr><td class="paramname">props</td><td>MQTT 5.0 subscribe properties </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>completion code </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a69083f5a059d129d1030140ec1cd3d58">&#9670;&nbsp;</a></span>MQTTProtocol_unsubscribe()</h2>

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          <td class="memname">int MQTTProtocol_unsubscribe </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="structClients.html">Clients</a> *&#160;</td>
          <td class="paramname"><em>client</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="structList.html">List</a> *&#160;</td>
          <td class="paramname"><em>topics</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>msgID</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="structMQTTProperties.html">MQTTProperties</a> *&#160;</td>
          <td class="paramname"><em>props</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
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<p>MQTT outgoing unsubscribe processing for a client. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">client</td><td>the client structure </td></tr>
    <tr><td class="paramname">topics</td><td>list of topics </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>completion code </dd></dl>
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