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  <div class="summary">
<a href="#func-members">Functions</a>  </div>
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<div class="title">MQTTPacketOut.c File Reference</div>  </div>
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<p>functions to deal with reading and writing of MQTT packets from and to sockets  
<a href="#details">More...</a></p>
<div class="textblock"><code>#include &quot;MQTTPacketOut.h&quot;</code><br />
<code>#include &quot;Log.h&quot;</code><br />
<code>#include &quot;StackTrace.h&quot;</code><br />
<code>#include &lt;string.h&gt;</code><br />
<code>#include &lt;stdlib.h&gt;</code><br />
<code>#include &quot;Heap.h&quot;</code><br />
</div><div class="textblock"><div class="dynheader">
Include dependency graph for MQTTPacketOut.c:</div>
<div class="dyncontent">
<div class="center"><img src="MQTTPacketOut_8c__incl.png" border="0" usemap="#MQTTPacketOut_8c" alt=""/></div>
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</div><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:ad3c3f0919760286998e9b9eafaa47a36"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTPacketOut_8c.html#ad3c3f0919760286998e9b9eafaa47a36">MQTTPacket_send_connect</a> (<a class="el" href="structClients.html">Clients</a> *client, 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:ad3c3f0919760286998e9b9eafaa47a36"><td class="mdescLeft">&#160;</td><td class="mdescRight">Send an MQTT CONNECT packet down a socket for V5 or later.  <a href="MQTTPacketOut_8c.html#ad3c3f0919760286998e9b9eafaa47a36">More...</a><br /></td></tr>
<tr class="separator:ad3c3f0919760286998e9b9eafaa47a36"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad05dd32a547e82e0741d9d8279568a65"><td class="memItemLeft" align="right" valign="top">void *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTPacketOut_8c.html#ad05dd32a547e82e0741d9d8279568a65">MQTTPacket_connack</a> (int MQTTVersion, unsigned char aHeader, char *data, size_t datalen)</td></tr>
<tr class="memdesc:ad05dd32a547e82e0741d9d8279568a65"><td class="mdescLeft">&#160;</td><td class="mdescRight">Function used in the new packets table to create connack packets.  <a href="MQTTPacketOut_8c.html#ad05dd32a547e82e0741d9d8279568a65">More...</a><br /></td></tr>
<tr class="separator:ad05dd32a547e82e0741d9d8279568a65"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a49e8e6789e17a29f5a448b8fab0a4137"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTPacketOut_8c.html#a49e8e6789e17a29f5a448b8fab0a4137">MQTTPacket_freeConnack</a> (<a class="el" href="structConnack.html">Connack</a> *pack)</td></tr>
<tr class="memdesc:a49e8e6789e17a29f5a448b8fab0a4137"><td class="mdescLeft">&#160;</td><td class="mdescRight">Free allocated storage for a connack packet.  <a href="MQTTPacketOut_8c.html#a49e8e6789e17a29f5a448b8fab0a4137">More...</a><br /></td></tr>
<tr class="separator:a49e8e6789e17a29f5a448b8fab0a4137"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:acf4b3402e224ac22ffbe74731f374fe0"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTPacketOut_8c.html#acf4b3402e224ac22ffbe74731f374fe0">MQTTPacket_send_pingreq</a> (<a class="el" href="structnetworkHandles.html">networkHandles</a> *net, const char *clientID)</td></tr>
<tr class="memdesc:acf4b3402e224ac22ffbe74731f374fe0"><td class="mdescLeft">&#160;</td><td class="mdescRight">Send an MQTT PINGREQ packet down a socket.  <a href="MQTTPacketOut_8c.html#acf4b3402e224ac22ffbe74731f374fe0">More...</a><br /></td></tr>
<tr class="separator:acf4b3402e224ac22ffbe74731f374fe0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a90212ed29c311f52a1dce0617133b1a7"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTPacketOut_8c.html#a90212ed29c311f52a1dce0617133b1a7">MQTTPacket_send_subscribe</a> (<a class="el" href="structList.html">List</a> *topics, <a class="el" href="structList.html">List</a> *qoss, <a class="el" href="structMQTTSubscribe__options.html">MQTTSubscribe_options</a> *opts, <a class="el" href="structMQTTProperties.html">MQTTProperties</a> *props, int msgid, int dup, <a class="el" href="structClients.html">Clients</a> *client)</td></tr>
<tr class="memdesc:a90212ed29c311f52a1dce0617133b1a7"><td class="mdescLeft">&#160;</td><td class="mdescRight">Send an MQTT subscribe packet down a socket.  <a href="MQTTPacketOut_8c.html#a90212ed29c311f52a1dce0617133b1a7">More...</a><br /></td></tr>
<tr class="separator:a90212ed29c311f52a1dce0617133b1a7"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aee4b3e106128629671828ae7bfa70850"><td class="memItemLeft" align="right" valign="top">void *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTPacketOut_8c.html#aee4b3e106128629671828ae7bfa70850">MQTTPacket_suback</a> (int MQTTVersion, unsigned char aHeader, char *data, size_t datalen)</td></tr>
<tr class="memdesc:aee4b3e106128629671828ae7bfa70850"><td class="mdescLeft">&#160;</td><td class="mdescRight">Function used in the new packets table to create suback packets.  <a href="MQTTPacketOut_8c.html#aee4b3e106128629671828ae7bfa70850">More...</a><br /></td></tr>
<tr class="separator:aee4b3e106128629671828ae7bfa70850"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a1ad4c9b76c6ab88c394ee925eb4dcd44"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTPacketOut_8c.html#a1ad4c9b76c6ab88c394ee925eb4dcd44">MQTTPacket_send_unsubscribe</a> (<a class="el" href="structList.html">List</a> *topics, <a class="el" href="structMQTTProperties.html">MQTTProperties</a> *props, int msgid, int dup, <a class="el" href="structClients.html">Clients</a> *client)</td></tr>
<tr class="memdesc:a1ad4c9b76c6ab88c394ee925eb4dcd44"><td class="mdescLeft">&#160;</td><td class="mdescRight">Send an MQTT unsubscribe packet down a socket.  <a href="MQTTPacketOut_8c.html#a1ad4c9b76c6ab88c394ee925eb4dcd44">More...</a><br /></td></tr>
<tr class="separator:a1ad4c9b76c6ab88c394ee925eb4dcd44"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a93f6aa4b23d30f6c8c5be87b0b58e37c"><td class="memItemLeft" align="right" valign="top">void *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="MQTTPacketOut_8c.html#a93f6aa4b23d30f6c8c5be87b0b58e37c">MQTTPacket_unsuback</a> (int MQTTVersion, unsigned char aHeader, char *data, size_t datalen)</td></tr>
<tr class="memdesc:a93f6aa4b23d30f6c8c5be87b0b58e37c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Function used in the new packets table to create unsuback packets.  <a href="MQTTPacketOut_8c.html#a93f6aa4b23d30f6c8c5be87b0b58e37c">More...</a><br /></td></tr>
<tr class="separator:a93f6aa4b23d30f6c8c5be87b0b58e37c"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>functions to deal with reading and writing of MQTT packets from and to sockets </p>
<p>Some other related functions are in the <a class="el" href="structMQTTPacket.html" title="Data for a packet with header only.">MQTTPacket</a> module </p>
</div><h2 class="groupheader">Function Documentation</h2>
<a id="ad05dd32a547e82e0741d9d8279568a65"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ad05dd32a547e82e0741d9d8279568a65">&#9670;&nbsp;</a></span>MQTTPacket_connack()</h2>

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<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">void* MQTTPacket_connack </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">unsigned char&#160;</td>
          <td class="paramname"><em>aHeader</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">char *&#160;</td>
          <td class="paramname"><em>data</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">size_t&#160;</td>
          <td class="paramname"><em>datalen</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Function used in the new packets table to create connack packets. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">MQTTVersion</td><td>MQTT 5 or less? </td></tr>
    <tr><td class="paramname">aHeader</td><td>the MQTT header byte </td></tr>
    <tr><td class="paramname">data</td><td>the rest of the packet </td></tr>
    <tr><td class="paramname">datalen</td><td>the length of the rest of the packet </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>pointer to the packet structure </dd></dl>
<div class="dynheader">
Here is the call graph for this function:</div>
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<a id="a49e8e6789e17a29f5a448b8fab0a4137"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a49e8e6789e17a29f5a448b8fab0a4137">&#9670;&nbsp;</a></span>MQTTPacket_freeConnack()</h2>

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<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">void MQTTPacket_freeConnack </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="structConnack.html">Connack</a> *&#160;</td>
          <td class="paramname"><em>pack</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Free allocated storage for a connack packet. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">pack</td><td>pointer to the connack packet structure </td></tr>
  </table>
  </dd>
</dl>

</div>
</div>
<a id="ad3c3f0919760286998e9b9eafaa47a36"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ad3c3f0919760286998e9b9eafaa47a36">&#9670;&nbsp;</a></span>MQTTPacket_send_connect()</h2>

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<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">int MQTTPacket_send_connect </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">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>
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          <td></td>
          <td>)</td>
          <td></td><td></td>
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<p>Send an MQTT CONNECT packet down a socket for V5 or later. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">client</td><td>a structure from which to get all the required values </td></tr>
    <tr><td class="paramname">MQTTVersion</td><td>the MQTT version to connect with </td></tr>
    <tr><td class="paramname">connectProperties</td><td>MQTT V5 properties for the connect packet </td></tr>
    <tr><td class="paramname">willProperties</td><td>MQTT V5 properties for the will message, if any </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the completion code (e.g. TCPSOCKET_COMPLETE) </dd></dl>
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Here is the call graph for this function:</div>
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<h2 class="memtitle"><span class="permalink"><a href="#acf4b3402e224ac22ffbe74731f374fe0">&#9670;&nbsp;</a></span>MQTTPacket_send_pingreq()</h2>

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          <td class="memname">int MQTTPacket_send_pingreq </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="structnetworkHandles.html">networkHandles</a> *&#160;</td>
          <td class="paramname"><em>net</em>, </td>
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        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const char *&#160;</td>
          <td class="paramname"><em>clientID</em>&#160;</td>
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        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
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<p>Send an MQTT PINGREQ packet down a socket. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">socket</td><td>the open socket to send the data to </td></tr>
    <tr><td class="paramname">clientID</td><td>the string client identifier, only used for tracing </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the completion code (e.g. TCPSOCKET_COMPLETE) </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a90212ed29c311f52a1dce0617133b1a7">&#9670;&nbsp;</a></span>MQTTPacket_send_subscribe()</h2>

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          <td class="memname">int MQTTPacket_send_subscribe </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"><a class="el" href="structMQTTSubscribe__options.html">MQTTSubscribe_options</a> *&#160;</td>
          <td class="paramname"><em>opts</em>, </td>
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        <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>, </td>
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        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>msgid</em>, </td>
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        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>dup</em>, </td>
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        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="structClients.html">Clients</a> *&#160;</td>
          <td class="paramname"><em>client</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Send an MQTT subscribe packet down a socket. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">topics</td><td>list of topics </td></tr>
    <tr><td class="paramname">qoss</td><td>list of corresponding QoSs </td></tr>
    <tr><td class="paramname">msgid</td><td>the MQTT message id to use </td></tr>
    <tr><td class="paramname">dup</td><td>boolean - whether to set the MQTT DUP flag </td></tr>
    <tr><td class="paramname">socket</td><td>the open socket to send the data to </td></tr>
    <tr><td class="paramname">clientID</td><td>the string client identifier, only used for tracing </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the completion code (e.g. TCPSOCKET_COMPLETE) </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a1ad4c9b76c6ab88c394ee925eb4dcd44">&#9670;&nbsp;</a></span>MQTTPacket_send_unsubscribe()</h2>

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          <td class="memname">int MQTTPacket_send_unsubscribe </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="structMQTTProperties.html">MQTTProperties</a> *&#160;</td>
          <td class="paramname"><em>props</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">int&#160;</td>
          <td class="paramname"><em>dup</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>client</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Send an MQTT unsubscribe packet down a socket. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">topics</td><td>list of topics </td></tr>
    <tr><td class="paramname">msgid</td><td>the MQTT message id to use </td></tr>
    <tr><td class="paramname">dup</td><td>boolean - whether to set the MQTT DUP flag </td></tr>
    <tr><td class="paramname">socket</td><td>the open socket to send the data to </td></tr>
    <tr><td class="paramname">clientID</td><td>the string client identifier, only used for tracing </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the completion code (e.g. TCPSOCKET_COMPLETE) </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#aee4b3e106128629671828ae7bfa70850">&#9670;&nbsp;</a></span>MQTTPacket_suback()</h2>

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          <td class="memname">void* MQTTPacket_suback </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">unsigned char&#160;</td>
          <td class="paramname"><em>aHeader</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">char *&#160;</td>
          <td class="paramname"><em>data</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">size_t&#160;</td>
          <td class="paramname"><em>datalen</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Function used in the new packets table to create suback packets. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">MQTTVersion</td><td>the version of MQTT </td></tr>
    <tr><td class="paramname">aHeader</td><td>the MQTT header byte </td></tr>
    <tr><td class="paramname">data</td><td>the rest of the packet </td></tr>
    <tr><td class="paramname">datalen</td><td>the length of the rest of the packet </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>pointer to the packet structure </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a93f6aa4b23d30f6c8c5be87b0b58e37c">&#9670;&nbsp;</a></span>MQTTPacket_unsuback()</h2>

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          <td class="memname">void* MQTTPacket_unsuback </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">unsigned char&#160;</td>
          <td class="paramname"><em>aHeader</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">char *&#160;</td>
          <td class="paramname"><em>data</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">size_t&#160;</td>
          <td class="paramname"><em>datalen</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Function used in the new packets table to create unsuback packets. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">MQTTVersion</td><td>the version of MQTT </td></tr>
    <tr><td class="paramname">aHeader</td><td>the MQTT header byte </td></tr>
    <tr><td class="paramname">data</td><td>the rest of the packet </td></tr>
    <tr><td class="paramname">datalen</td><td>the length of the rest of the packet </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>pointer to the packet structure </dd></dl>
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