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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>STUN Constants: libnice Reference Manual</title>
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                  <a href="#libnice-STUN-Constants.description" class="shortcut">Description</a></span>
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<div class="refentry">
<a name="libnice-STUN-Constants"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="libnice-STUN-Constants.top_of_page"></a>STUN Constants</span></h2>
<p>STUN Constants — STUN constants</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="libnice-STUN-Constants.stability-level"></a><h2>Stability Level</h2>
<acronym title="The intention of a Stable interface is to enable arbitrary third parties to
develop applications to these interfaces, release them, and have confidence that
they will run on all minor releases of the product (after the one in which the
interface was introduced, and within the same major release). Even at a major
release, incompatible changes are expected to be rare, and to have strong
justifications.
"><span class="acronym">Stable</span></acronym>, unless otherwise indicated
</div>
<div class="refsect1">
<a name="libnice-STUN-Constants.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="libnice-STUN-Constants.html#STUN-AGENT-MAX-SAVED-IDS:CAPS" title="STUN_AGENT_MAX_SAVED_IDS">STUN_AGENT_MAX_SAVED_IDS</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="libnice-STUN-Constants.html#STUN-AGENT-MAX-UNKNOWN-ATTRIBUTES:CAPS" title="STUN_AGENT_MAX_UNKNOWN_ATTRIBUTES">STUN_AGENT_MAX_UNKNOWN_ATTRIBUTES</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="libnice-STUN-Constants.html#STUN-ATTRIBUTE-HEADER-LENGTH:CAPS" title="STUN_ATTRIBUTE_HEADER_LENGTH">STUN_ATTRIBUTE_HEADER_LENGTH</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="libnice-STUN-Constants.html#STUN-ATTRIBUTE-LENGTH-LEN:CAPS" title="STUN_ATTRIBUTE_LENGTH_LEN">STUN_ATTRIBUTE_LENGTH_LEN</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="libnice-STUN-Constants.html#STUN-ATTRIBUTE-LENGTH-POS:CAPS" title="STUN_ATTRIBUTE_LENGTH_POS">STUN_ATTRIBUTE_LENGTH_POS</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="libnice-STUN-Constants.html#STUN-ATTRIBUTE-TYPE-LEN:CAPS" title="STUN_ATTRIBUTE_TYPE_LEN">STUN_ATTRIBUTE_TYPE_LEN</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="libnice-STUN-Constants.html#STUN-ATTRIBUTE-TYPE-POS:CAPS" title="STUN_ATTRIBUTE_TYPE_POS">STUN_ATTRIBUTE_TYPE_POS</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="libnice-STUN-Constants.html#STUN-ATTRIBUTE-VALUE-POS:CAPS" title="STUN_ATTRIBUTE_VALUE_POS">STUN_ATTRIBUTE_VALUE_POS</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="libnice-STUN-Constants.html#STUN-ID-LEN:CAPS" title="STUN_ID_LEN">STUN_ID_LEN</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="libnice-STUN-Constants.html#STUN-MAGIC-COOKIE:CAPS" title="STUN_MAGIC_COOKIE">STUN_MAGIC_COOKIE</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="libnice-STUN-Constants.html#STUN-MAX-MESSAGE-SIZE:CAPS" title="STUN_MAX_MESSAGE_SIZE">STUN_MAX_MESSAGE_SIZE</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="libnice-STUN-Constants.html#STUN-MAX-MESSAGE-SIZE-IPV4:CAPS" title="STUN_MAX_MESSAGE_SIZE_IPV4">STUN_MAX_MESSAGE_SIZE_IPV4</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="libnice-STUN-Constants.html#STUN-MAX-MESSAGE-SIZE-IPV6:CAPS" title="STUN_MAX_MESSAGE_SIZE_IPV6">STUN_MAX_MESSAGE_SIZE_IPV6</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="libnice-STUN-Constants.html#STUN-MESSAGE-ATTRIBUTES-POS:CAPS" title="STUN_MESSAGE_ATTRIBUTES_POS">STUN_MESSAGE_ATTRIBUTES_POS</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="libnice-STUN-Constants.html#STUN-MESSAGE-HEADER-LENGTH:CAPS" title="STUN_MESSAGE_HEADER_LENGTH">STUN_MESSAGE_HEADER_LENGTH</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="libnice-STUN-Constants.html#STUN-MESSAGE-LENGTH-LEN:CAPS" title="STUN_MESSAGE_LENGTH_LEN">STUN_MESSAGE_LENGTH_LEN</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="libnice-STUN-Constants.html#STUN-MESSAGE-LENGTH-POS:CAPS" title="STUN_MESSAGE_LENGTH_POS">STUN_MESSAGE_LENGTH_POS</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="libnice-STUN-Constants.html#STUN-MESSAGE-TRANS-ID-LEN:CAPS" title="STUN_MESSAGE_TRANS_ID_LEN">STUN_MESSAGE_TRANS_ID_LEN</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="libnice-STUN-Constants.html#STUN-MESSAGE-TRANS-ID-POS:CAPS" title="STUN_MESSAGE_TRANS_ID_POS">STUN_MESSAGE_TRANS_ID_POS</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="libnice-STUN-Constants.html#STUN-MESSAGE-TYPE-LEN:CAPS" title="STUN_MESSAGE_TYPE_LEN">STUN_MESSAGE_TYPE_LEN</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="libnice-STUN-Constants.html#STUN-MESSAGE-TYPE-POS:CAPS" title="STUN_MESSAGE_TYPE_POS">STUN_MESSAGE_TYPE_POS</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="libnice-STUN-Constants.html#TURN-MAGIC-COOKIE:CAPS" title="TURN_MAGIC_COOKIE">TURN_MAGIC_COOKIE</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="libnice-STUN-Constants.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;stun/constants.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="libnice-STUN-Constants.description"></a><h2>Description</h2>
<p>Various constants defining parts of the STUN and TURN protocols and
on-the-wire packet formats.</p>
</div>
<div class="refsect1">
<a name="libnice-STUN-Constants.functions_details"></a><h2>Functions</h2>
<p></p>
</div>
<div class="refsect1">
<a name="libnice-STUN-Constants.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="STUN-AGENT-MAX-SAVED-IDS:CAPS"></a><h3>STUN_AGENT_MAX_SAVED_IDS</h3>
<pre class="programlisting">#define STUN_AGENT_MAX_SAVED_IDS 200
</pre>
<p>Maximum number of simultaneously ongoing STUN transactions.</p>
</div>
<hr>
<div class="refsect2">
<a name="STUN-AGENT-MAX-UNKNOWN-ATTRIBUTES:CAPS"></a><h3>STUN_AGENT_MAX_UNKNOWN_ATTRIBUTES</h3>
<pre class="programlisting">#define STUN_AGENT_MAX_UNKNOWN_ATTRIBUTES 256
</pre>
<p>Maximum number of unknown attribute which can be handled in a single STUN
message.</p>
</div>
<hr>
<div class="refsect2">
<a name="STUN-ATTRIBUTE-HEADER-LENGTH:CAPS"></a><h3>STUN_ATTRIBUTE_HEADER_LENGTH</h3>
<pre class="programlisting">#define STUN_ATTRIBUTE_HEADER_LENGTH STUN_ATTRIBUTE_VALUE_POS
</pre>
<p>Length of a single STUN attribute header (in bytes).</p>
</div>
<hr>
<div class="refsect2">
<a name="STUN-ATTRIBUTE-LENGTH-LEN:CAPS"></a><h3>STUN_ATTRIBUTE_LENGTH_LEN</h3>
<pre class="programlisting">#define STUN_ATTRIBUTE_LENGTH_LEN 2
</pre>
<p>Length of the length field of a STUN attribute (in bytes).</p>
</div>
<hr>
<div class="refsect2">
<a name="STUN-ATTRIBUTE-LENGTH-POS:CAPS"></a><h3>STUN_ATTRIBUTE_LENGTH_POS</h3>
<pre class="programlisting">#define             STUN_ATTRIBUTE_LENGTH_POS</pre>
<p>Offset of the length field of a STUN attribute (in bytes).</p>
</div>
<hr>
<div class="refsect2">
<a name="STUN-ATTRIBUTE-TYPE-LEN:CAPS"></a><h3>STUN_ATTRIBUTE_TYPE_LEN</h3>
<pre class="programlisting">#define STUN_ATTRIBUTE_TYPE_LEN 2
</pre>
<p>Length of the type field of a STUN attribute (in bytes).</p>
</div>
<hr>
<div class="refsect2">
<a name="STUN-ATTRIBUTE-TYPE-POS:CAPS"></a><h3>STUN_ATTRIBUTE_TYPE_POS</h3>
<pre class="programlisting">#define STUN_ATTRIBUTE_TYPE_POS 0
</pre>
<p>Offset of the type field of a STUN attribute (in bytes).</p>
</div>
<hr>
<div class="refsect2">
<a name="STUN-ATTRIBUTE-VALUE-POS:CAPS"></a><h3>STUN_ATTRIBUTE_VALUE_POS</h3>
<pre class="programlisting">#define             STUN_ATTRIBUTE_VALUE_POS</pre>
<p>Offset of the value field of a STUN attribute (in bytes).</p>
</div>
<hr>
<div class="refsect2">
<a name="STUN-ID-LEN:CAPS"></a><h3>STUN_ID_LEN</h3>
<pre class="programlisting">#define STUN_ID_LEN 16
</pre>
<p>Length of the ID field of a STUN message (in bytes).</p>
</div>
<hr>
<div class="refsect2">
<a name="STUN-MAGIC-COOKIE:CAPS"></a><h3>STUN_MAGIC_COOKIE</h3>
<pre class="programlisting">#define STUN_MAGIC_COOKIE 0x2112A442
</pre>
<p>Magic cookie value used to identify STUN messages.</p>
</div>
<hr>
<div class="refsect2">
<a name="STUN-MAX-MESSAGE-SIZE:CAPS"></a><h3>STUN_MAX_MESSAGE_SIZE</h3>
<pre class="programlisting">#define STUN_MAX_MESSAGE_SIZE 65552
</pre>
<p>The Maximum size of a STUN message</p>
</div>
<hr>
<div class="refsect2">
<a name="STUN-MAX-MESSAGE-SIZE-IPV4:CAPS"></a><h3>STUN_MAX_MESSAGE_SIZE_IPV4</h3>
<pre class="programlisting">#define STUN_MAX_MESSAGE_SIZE_IPV4 576
</pre>
<p>Maximum size of a STUN message sent over IPv4 (in bytes).</p>
</div>
<hr>
<div class="refsect2">
<a name="STUN-MAX-MESSAGE-SIZE-IPV6:CAPS"></a><h3>STUN_MAX_MESSAGE_SIZE_IPV6</h3>
<pre class="programlisting">#define STUN_MAX_MESSAGE_SIZE_IPV6 1280
</pre>
<p>Maximum size of a STUN message sent over IPv6 (in bytes).</p>
</div>
<hr>
<div class="refsect2">
<a name="STUN-MESSAGE-ATTRIBUTES-POS:CAPS"></a><h3>STUN_MESSAGE_ATTRIBUTES_POS</h3>
<pre class="programlisting">#define             STUN_MESSAGE_ATTRIBUTES_POS</pre>
<p>Offset of the attributes of a STUN message (in bytes).</p>
</div>
<hr>
<div class="refsect2">
<a name="STUN-MESSAGE-HEADER-LENGTH:CAPS"></a><h3>STUN_MESSAGE_HEADER_LENGTH</h3>
<pre class="programlisting">#define STUN_MESSAGE_HEADER_LENGTH STUN_MESSAGE_ATTRIBUTES_POS
</pre>
<p>Total length of a STUN message header (in bytes).</p>
</div>
<hr>
<div class="refsect2">
<a name="STUN-MESSAGE-LENGTH-LEN:CAPS"></a><h3>STUN_MESSAGE_LENGTH_LEN</h3>
<pre class="programlisting">#define STUN_MESSAGE_LENGTH_LEN 2
</pre>
<p>Length of the length field of a STUN message (in bytes).</p>
</div>
<hr>
<div class="refsect2">
<a name="STUN-MESSAGE-LENGTH-POS:CAPS"></a><h3>STUN_MESSAGE_LENGTH_POS</h3>
<pre class="programlisting">#define             STUN_MESSAGE_LENGTH_POS</pre>
<p>Offset of the length field of a STUN message (in bytes).</p>
</div>
<hr>
<div class="refsect2">
<a name="STUN-MESSAGE-TRANS-ID-LEN:CAPS"></a><h3>STUN_MESSAGE_TRANS_ID_LEN</h3>
<pre class="programlisting">#define STUN_MESSAGE_TRANS_ID_LEN 16
</pre>
<p>Length of the transaction ID field of a STUN message (in bytes).</p>
</div>
<hr>
<div class="refsect2">
<a name="STUN-MESSAGE-TRANS-ID-POS:CAPS"></a><h3>STUN_MESSAGE_TRANS_ID_POS</h3>
<pre class="programlisting">#define             STUN_MESSAGE_TRANS_ID_POS</pre>
<p>Offset of the transaction ID field of a STUN message (in bytes).</p>
</div>
<hr>
<div class="refsect2">
<a name="STUN-MESSAGE-TYPE-LEN:CAPS"></a><h3>STUN_MESSAGE_TYPE_LEN</h3>
<pre class="programlisting">#define STUN_MESSAGE_TYPE_LEN 2
</pre>
<p>Length of the type field of a STUN message (in bytes).</p>
</div>
<hr>
<div class="refsect2">
<a name="STUN-MESSAGE-TYPE-POS:CAPS"></a><h3>STUN_MESSAGE_TYPE_POS</h3>
<pre class="programlisting">#define STUN_MESSAGE_TYPE_POS 0
</pre>
<p>Offset of the type field of a STUN message (in bytes).</p>
</div>
<hr>
<div class="refsect2">
<a name="TURN-MAGIC-COOKIE:CAPS"></a><h3>TURN_MAGIC_COOKIE</h3>
<pre class="programlisting">#define TURN_MAGIC_COOKIE 0x72c64bc6
</pre>
<p>Magic cookie value used to identify TURN messages.</p>
</div>
</div>
</div>
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