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<a name="libnice-TURN"></a><div class="titlepage"></div>
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<td valign="top">
<h2><span class="refentrytitle"><a name="libnice-TURN.top_of_page"></a>TURN</span></h2>
<p>TURN — TURN Allocation Usage</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="libnice-TURN.stability-level"></a><h2>Stability Level</h2>
Stable, unless otherwise indicated
</div>
<div class="refsynopsisdiv">
<a name="libnice-TURN.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">
#include <stun/usages/turn.h>
enum <a class="link" href="libnice-TURN.html#StunUsageTurnCompatibility" title="enum StunUsageTurnCompatibility">StunUsageTurnCompatibility</a>;
enum <a class="link" href="libnice-TURN.html#StunUsageTurnRequestPorts" title="enum StunUsageTurnRequestPorts">StunUsageTurnRequestPorts</a>;
enum <a class="link" href="libnice-TURN.html#StunUsageTurnReturn" title="enum StunUsageTurnReturn">StunUsageTurnReturn</a>;
<span class="returnvalue">size_t</span> <a class="link" href="libnice-TURN.html#stun-usage-turn-create" title="stun_usage_turn_create ()">stun_usage_turn_create</a> (<em class="parameter"><code><a class="link" href="libnice-StunAgent.html#StunAgent" title="StunAgent"><span class="type">StunAgent</span></a> *agent</code></em>,
<em class="parameter"><code><a class="link" href="libnice-StunMessage.html#StunMessage" title="struct StunMessage"><span class="type">StunMessage</span></a> *msg</code></em>,
<em class="parameter"><code><span class="type">uint8_t</span> *buffer</code></em>,
<em class="parameter"><code><span class="type">size_t</span> buffer_len</code></em>,
<em class="parameter"><code><a class="link" href="libnice-StunMessage.html#StunMessage" title="struct StunMessage"><span class="type">StunMessage</span></a> *previous_response</code></em>,
<em class="parameter"><code><a class="link" href="libnice-TURN.html#StunUsageTurnRequestPorts" title="enum StunUsageTurnRequestPorts"><span class="type">StunUsageTurnRequestPorts</span></a> request_ports</code></em>,
<em class="parameter"><code><span class="type">int32_t</span> bandwidth</code></em>,
<em class="parameter"><code><span class="type">int32_t</span> lifetime</code></em>,
<em class="parameter"><code><span class="type">uint8_t</span> *username</code></em>,
<em class="parameter"><code><span class="type">size_t</span> username_len</code></em>,
<em class="parameter"><code><span class="type">uint8_t</span> *password</code></em>,
<em class="parameter"><code><span class="type">size_t</span> password_len</code></em>,
<em class="parameter"><code><a class="link" href="libnice-TURN.html#StunUsageTurnCompatibility" title="enum StunUsageTurnCompatibility"><span class="type">StunUsageTurnCompatibility</span></a> compatibility</code></em>);
<span class="returnvalue">size_t</span> <a class="link" href="libnice-TURN.html#stun-usage-turn-create-refresh" title="stun_usage_turn_create_refresh ()">stun_usage_turn_create_refresh</a> (<em class="parameter"><code><a class="link" href="libnice-StunAgent.html#StunAgent" title="StunAgent"><span class="type">StunAgent</span></a> *agent</code></em>,
<em class="parameter"><code><a class="link" href="libnice-StunMessage.html#StunMessage" title="struct StunMessage"><span class="type">StunMessage</span></a> *msg</code></em>,
<em class="parameter"><code><span class="type">uint8_t</span> *buffer</code></em>,
<em class="parameter"><code><span class="type">size_t</span> buffer_len</code></em>,
<em class="parameter"><code><a class="link" href="libnice-StunMessage.html#StunMessage" title="struct StunMessage"><span class="type">StunMessage</span></a> *previous_response</code></em>,
<em class="parameter"><code><span class="type">int32_t</span> lifetime</code></em>,
<em class="parameter"><code><span class="type">uint8_t</span> *username</code></em>,
<em class="parameter"><code><span class="type">size_t</span> username_len</code></em>,
<em class="parameter"><code><span class="type">uint8_t</span> *password</code></em>,
<em class="parameter"><code><span class="type">size_t</span> password_len</code></em>,
<em class="parameter"><code><a class="link" href="libnice-TURN.html#StunUsageTurnCompatibility" title="enum StunUsageTurnCompatibility"><span class="type">StunUsageTurnCompatibility</span></a> compatibility</code></em>);
<a class="link" href="libnice-TURN.html#StunUsageTurnReturn" title="enum StunUsageTurnReturn"><span class="returnvalue">StunUsageTurnReturn</span></a> <a class="link" href="libnice-TURN.html#stun-usage-turn-process" title="stun_usage_turn_process ()">stun_usage_turn_process</a> (<em class="parameter"><code><a class="link" href="libnice-StunMessage.html#StunMessage" title="struct StunMessage"><span class="type">StunMessage</span></a> *msg</code></em>,
<em class="parameter"><code><span class="type">struct sockaddr</span> *relay_addr</code></em>,
<em class="parameter"><code><span class="type">socklen_t</span> *relay_addrlen</code></em>,
<em class="parameter"><code><span class="type">struct sockaddr</span> *addr</code></em>,
<em class="parameter"><code><span class="type">socklen_t</span> *addrlen</code></em>,
<em class="parameter"><code><span class="type">struct sockaddr</span> *alternate_server</code></em>,
<em class="parameter"><code><span class="type">socklen_t</span> *alternate_server_len</code></em>,
<em class="parameter"><code><span class="type">uint32_t</span> *bandwidth</code></em>,
<em class="parameter"><code><span class="type">uint32_t</span> *lifetime</code></em>,
<em class="parameter"><code><a class="link" href="libnice-TURN.html#StunUsageTurnCompatibility" title="enum StunUsageTurnCompatibility"><span class="type">StunUsageTurnCompatibility</span></a> compatibility</code></em>);
<a class="link" href="libnice-TURN.html#StunUsageTurnReturn" title="enum StunUsageTurnReturn"><span class="returnvalue">StunUsageTurnReturn</span></a> <a class="link" href="libnice-TURN.html#stun-usage-turn-refresh-process" title="stun_usage_turn_refresh_process ()">stun_usage_turn_refresh_process</a> (<em class="parameter"><code><a class="link" href="libnice-StunMessage.html#StunMessage" title="struct StunMessage"><span class="type">StunMessage</span></a> *msg</code></em>,
<em class="parameter"><code><span class="type">uint32_t</span> *lifetime</code></em>,
<em class="parameter"><code><a class="link" href="libnice-TURN.html#StunUsageTurnCompatibility" title="enum StunUsageTurnCompatibility"><span class="type">StunUsageTurnCompatibility</span></a> compatibility</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="libnice-TURN.description"></a><h2>Description</h2>
<p>
The STUN TURN usage allows for easily creating and parsing STUN Allocate
requests and responses used for TURN. The API allows you to create a new
allocation or refresh an existing one as well as to parse a response to
an allocate or refresh request.
</p>
</div>
<div class="refsect1">
<a name="libnice-TURN.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="StunUsageTurnCompatibility"></a><h3>enum StunUsageTurnCompatibility</h3>
<pre class="programlisting">typedef enum {
STUN_USAGE_TURN_COMPATIBILITY_DRAFT9,
STUN_USAGE_TURN_COMPATIBILITY_GOOGLE,
STUN_USAGE_TURN_COMPATIBILITY_MSN,
STUN_USAGE_TURN_COMPATIBILITY_OC2007,
STUN_USAGE_TURN_COMPATIBILITY_RFC5766,
} StunUsageTurnCompatibility;
</pre>
<p>
Specifies which TURN specification compatibility to use
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><a name="STUN-USAGE-TURN-COMPATIBILITY-DRAFT9:CAPS"></a><span class="term"><code class="literal">STUN_USAGE_TURN_COMPATIBILITY_DRAFT9</code></span></p></td>
<td>Use the specification compatible with
TURN Draft 09
</td>
</tr>
<tr>
<td><p><a name="STUN-USAGE-TURN-COMPATIBILITY-GOOGLE:CAPS"></a><span class="term"><code class="literal">STUN_USAGE_TURN_COMPATIBILITY_GOOGLE</code></span></p></td>
<td>Use the specification compatible with
Google Talk's relay server
</td>
</tr>
<tr>
<td><p><a name="STUN-USAGE-TURN-COMPATIBILITY-MSN:CAPS"></a><span class="term"><code class="literal">STUN_USAGE_TURN_COMPATIBILITY_MSN</code></span></p></td>
<td>Use the specification compatible with
MSN TURN servers
</td>
</tr>
<tr>
<td><p><a name="STUN-USAGE-TURN-COMPATIBILITY-OC2007:CAPS"></a><span class="term"><code class="literal">STUN_USAGE_TURN_COMPATIBILITY_OC2007</code></span></p></td>
<td>
</td>
</tr>
<tr>
<td><p><a name="STUN-USAGE-TURN-COMPATIBILITY-RFC5766:CAPS"></a><span class="term"><code class="literal">STUN_USAGE_TURN_COMPATIBILITY_RFC5766</code></span></p></td>
<td>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="StunUsageTurnRequestPorts"></a><h3>enum StunUsageTurnRequestPorts</h3>
<pre class="programlisting">typedef enum {
STUN_USAGE_TURN_REQUEST_PORT_NORMAL = 0,
STUN_USAGE_TURN_REQUEST_PORT_EVEN = 1,
STUN_USAGE_TURN_REQUEST_PORT_EVEN_AND_RESERVE = 2
} StunUsageTurnRequestPorts;
</pre>
<p>
This enum is used to specify which port configuration you want when creating
a new Allocation
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><a name="STUN-USAGE-TURN-REQUEST-PORT-NORMAL:CAPS"></a><span class="term"><code class="literal">STUN_USAGE_TURN_REQUEST_PORT_NORMAL</code></span></p></td>
<td>Request a normal port
</td>
</tr>
<tr>
<td><p><a name="STUN-USAGE-TURN-REQUEST-PORT-EVEN:CAPS"></a><span class="term"><code class="literal">STUN_USAGE_TURN_REQUEST_PORT_EVEN</code></span></p></td>
<td>Request an even port
</td>
</tr>
<tr>
<td><p><a name="STUN-USAGE-TURN-REQUEST-PORT-EVEN-AND-RESERVE:CAPS"></a><span class="term"><code class="literal">STUN_USAGE_TURN_REQUEST_PORT_EVEN_AND_RESERVE</code></span></p></td>
<td>Request an even port and
reserve the next higher port
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="StunUsageTurnReturn"></a><h3>enum StunUsageTurnReturn</h3>
<pre class="programlisting">typedef enum {
STUN_USAGE_TURN_RETURN_RELAY_SUCCESS,
STUN_USAGE_TURN_RETURN_MAPPED_SUCCESS,
STUN_USAGE_TURN_RETURN_ERROR,
STUN_USAGE_TURN_RETURN_INVALID,
STUN_USAGE_TURN_RETURN_ALTERNATE_SERVER,
} StunUsageTurnReturn;
</pre>
<p>
Return value of <a class="link" href="libnice-TURN.html#stun-usage-turn-process" title="stun_usage_turn_process ()"><code class="function">stun_usage_turn_process()</code></a> and
<a class="link" href="libnice-TURN.html#stun-usage-turn-refresh-process" title="stun_usage_turn_refresh_process ()"><code class="function">stun_usage_turn_refresh_process()</code></a> which allows you to see what status the
function call returned.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><a name="STUN-USAGE-TURN-RETURN-RELAY-SUCCESS:CAPS"></a><span class="term"><code class="literal">STUN_USAGE_TURN_RETURN_RELAY_SUCCESS</code></span></p></td>
<td>The response was successful and a relay
address is provided
</td>
</tr>
<tr>
<td><p><a name="STUN-USAGE-TURN-RETURN-MAPPED-SUCCESS:CAPS"></a><span class="term"><code class="literal">STUN_USAGE_TURN_RETURN_MAPPED_SUCCESS</code></span></p></td>
<td>The response was successful and a
relay address as well as a mapped address are provided
</td>
</tr>
<tr>
<td><p><a name="STUN-USAGE-TURN-RETURN-ERROR:CAPS"></a><span class="term"><code class="literal">STUN_USAGE_TURN_RETURN_ERROR</code></span></p></td>
<td>The response resulted in an error
</td>
</tr>
<tr>
<td><p><a name="STUN-USAGE-TURN-RETURN-INVALID:CAPS"></a><span class="term"><code class="literal">STUN_USAGE_TURN_RETURN_INVALID</code></span></p></td>
<td>The response is not a valid response
</td>
</tr>
<tr>
<td><p><a name="STUN-USAGE-TURN-RETURN-ALTERNATE-SERVER:CAPS"></a><span class="term"><code class="literal">STUN_USAGE_TURN_RETURN_ALTERNATE_SERVER</code></span></p></td>
<td>The server requests the message
to be sent to an alternate server
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="stun-usage-turn-create"></a><h3>stun_usage_turn_create ()</h3>
<pre class="programlisting"><span class="returnvalue">size_t</span> stun_usage_turn_create (<em class="parameter"><code><a class="link" href="libnice-StunAgent.html#StunAgent" title="StunAgent"><span class="type">StunAgent</span></a> *agent</code></em>,
<em class="parameter"><code><a class="link" href="libnice-StunMessage.html#StunMessage" title="struct StunMessage"><span class="type">StunMessage</span></a> *msg</code></em>,
<em class="parameter"><code><span class="type">uint8_t</span> *buffer</code></em>,
<em class="parameter"><code><span class="type">size_t</span> buffer_len</code></em>,
<em class="parameter"><code><a class="link" href="libnice-StunMessage.html#StunMessage" title="struct StunMessage"><span class="type">StunMessage</span></a> *previous_response</code></em>,
<em class="parameter"><code><a class="link" href="libnice-TURN.html#StunUsageTurnRequestPorts" title="enum StunUsageTurnRequestPorts"><span class="type">StunUsageTurnRequestPorts</span></a> request_ports</code></em>,
<em class="parameter"><code><span class="type">int32_t</span> bandwidth</code></em>,
<em class="parameter"><code><span class="type">int32_t</span> lifetime</code></em>,
<em class="parameter"><code><span class="type">uint8_t</span> *username</code></em>,
<em class="parameter"><code><span class="type">size_t</span> username_len</code></em>,
<em class="parameter"><code><span class="type">uint8_t</span> *password</code></em>,
<em class="parameter"><code><span class="type">size_t</span> password_len</code></em>,
<em class="parameter"><code><a class="link" href="libnice-TURN.html#StunUsageTurnCompatibility" title="enum StunUsageTurnCompatibility"><span class="type">StunUsageTurnCompatibility</span></a> compatibility</code></em>);</pre>
<p>
Create a new TURN Allocation request
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>agent</code></em> :</span></p></td>
<td>The <a class="link" href="libnice-StunAgent.html#StunAgent" title="StunAgent"><span class="type">StunAgent</span></a> to use to build the request</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>msg</code></em> :</span></p></td>
<td>The <a class="link" href="libnice-StunMessage.html#StunMessage" title="struct StunMessage"><span class="type">StunMessage</span></a> to build</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td>
<td>The buffer to use for creating the <a class="link" href="libnice-StunMessage.html#StunMessage" title="struct StunMessage"><span class="type">StunMessage</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>buffer_len</code></em> :</span></p></td>
<td>The size of the <em class="parameter"><code>buffer</code></em>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>previous_response</code></em> :</span></p></td>
<td>If this is the first request you are sending, set this
argument to NULL, if it's a subsequent request you are building, then set this
argument to the response you have received. This argument is used for building
long term credentials (using the REALM and NONCE attributes) as well as for
getting the RESERVATION-TOKEN attribute when you previously requested an
allocation which reserved two ports</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>request_ports</code></em> :</span></p></td>
<td>Specify how you want to request the allocated port(s).
This is only used if the compatibility is set to
<a class="link" href="libnice-TURN.html#STUN-USAGE-TURN-COMPATIBILITY-DRAFT9:CAPS"><span class="type">STUN_USAGE_TURN_COMPATIBILITY_DRAFT9</span></a>
<p>See <a class="link" href="libnice-TURN.html#StunUsageTurnRequestPorts" title="enum StunUsageTurnRequestPorts"><span class="type">StunUsageTurnRequestPorts</span></a> </p>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>bandwidth</code></em> :</span></p></td>
<td>The bandwidth to request from the server for the allocation. If
this value is negative, then no BANDWIDTH attribute is added to the request.
This is only used if the compatibility is set to
<a class="link" href="libnice-TURN.html#STUN-USAGE-TURN-COMPATIBILITY-DRAFT9:CAPS"><span class="type">STUN_USAGE_TURN_COMPATIBILITY_DRAFT9</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>lifetime</code></em> :</span></p></td>
<td>The lifetime of the allocation to request from the server. If
this value is negative, then no LIFETIME attribute is added to the request.
This is only used if the compatibility is set to
<a class="link" href="libnice-TURN.html#STUN-USAGE-TURN-COMPATIBILITY-DRAFT9:CAPS"><span class="type">STUN_USAGE_TURN_COMPATIBILITY_DRAFT9</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>username</code></em> :</span></p></td>
<td>The username to use in the request</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>username_len</code></em> :</span></p></td>
<td>The length of <em class="parameter"><code>username</code></em>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>password</code></em> :</span></p></td>
<td>The key to use for building the MESSAGE-INTEGRITY</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>password_len</code></em> :</span></p></td>
<td>The length of <em class="parameter"><code>password</code></em>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>compatibility</code></em> :</span></p></td>
<td>The compatibility mode to use for building the Allocation
request</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The length of the message to send</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="stun-usage-turn-create-refresh"></a><h3>stun_usage_turn_create_refresh ()</h3>
<pre class="programlisting"><span class="returnvalue">size_t</span> stun_usage_turn_create_refresh (<em class="parameter"><code><a class="link" href="libnice-StunAgent.html#StunAgent" title="StunAgent"><span class="type">StunAgent</span></a> *agent</code></em>,
<em class="parameter"><code><a class="link" href="libnice-StunMessage.html#StunMessage" title="struct StunMessage"><span class="type">StunMessage</span></a> *msg</code></em>,
<em class="parameter"><code><span class="type">uint8_t</span> *buffer</code></em>,
<em class="parameter"><code><span class="type">size_t</span> buffer_len</code></em>,
<em class="parameter"><code><a class="link" href="libnice-StunMessage.html#StunMessage" title="struct StunMessage"><span class="type">StunMessage</span></a> *previous_response</code></em>,
<em class="parameter"><code><span class="type">int32_t</span> lifetime</code></em>,
<em class="parameter"><code><span class="type">uint8_t</span> *username</code></em>,
<em class="parameter"><code><span class="type">size_t</span> username_len</code></em>,
<em class="parameter"><code><span class="type">uint8_t</span> *password</code></em>,
<em class="parameter"><code><span class="type">size_t</span> password_len</code></em>,
<em class="parameter"><code><a class="link" href="libnice-TURN.html#StunUsageTurnCompatibility" title="enum StunUsageTurnCompatibility"><span class="type">StunUsageTurnCompatibility</span></a> compatibility</code></em>);</pre>
<p>
Create a new TURN Refresh request
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>agent</code></em> :</span></p></td>
<td>The <a class="link" href="libnice-StunAgent.html#StunAgent" title="StunAgent"><span class="type">StunAgent</span></a> to use to build the request</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>msg</code></em> :</span></p></td>
<td>The <a class="link" href="libnice-StunMessage.html#StunMessage" title="struct StunMessage"><span class="type">StunMessage</span></a> to build</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td>
<td>The buffer to use for creating the <a class="link" href="libnice-StunMessage.html#StunMessage" title="struct StunMessage"><span class="type">StunMessage</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>buffer_len</code></em> :</span></p></td>
<td>The size of the <em class="parameter"><code>buffer</code></em>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>previous_response</code></em> :</span></p></td>
<td>If this is the first request you are sending, set this
argument to NULL, if it's a subsequent request you are building, then set this
argument to the response you have received. This argument is used for building
long term credentials (using the REALM and NONCE attributes)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>lifetime</code></em> :</span></p></td>
<td>The lifetime of the allocation to request from the server. If
this value is negative, then no LIFETIME attribute is added to the request.
This is only used if the compatibility is set to
<a class="link" href="libnice-TURN.html#STUN-USAGE-TURN-COMPATIBILITY-DRAFT9:CAPS"><span class="type">STUN_USAGE_TURN_COMPATIBILITY_DRAFT9</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>username</code></em> :</span></p></td>
<td>The username to use in the request</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>username_len</code></em> :</span></p></td>
<td>The length of <em class="parameter"><code>username</code></em>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>password</code></em> :</span></p></td>
<td>The key to use for building the MESSAGE-INTEGRITY</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>password_len</code></em> :</span></p></td>
<td>The length of <em class="parameter"><code>password</code></em>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>compatibility</code></em> :</span></p></td>
<td>The compatibility mode to use for building the Allocation
request</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The length of the message to send</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="stun-usage-turn-process"></a><h3>stun_usage_turn_process ()</h3>
<pre class="programlisting"><a class="link" href="libnice-TURN.html#StunUsageTurnReturn" title="enum StunUsageTurnReturn"><span class="returnvalue">StunUsageTurnReturn</span></a> stun_usage_turn_process (<em class="parameter"><code><a class="link" href="libnice-StunMessage.html#StunMessage" title="struct StunMessage"><span class="type">StunMessage</span></a> *msg</code></em>,
<em class="parameter"><code><span class="type">struct sockaddr</span> *relay_addr</code></em>,
<em class="parameter"><code><span class="type">socklen_t</span> *relay_addrlen</code></em>,
<em class="parameter"><code><span class="type">struct sockaddr</span> *addr</code></em>,
<em class="parameter"><code><span class="type">socklen_t</span> *addrlen</code></em>,
<em class="parameter"><code><span class="type">struct sockaddr</span> *alternate_server</code></em>,
<em class="parameter"><code><span class="type">socklen_t</span> *alternate_server_len</code></em>,
<em class="parameter"><code><span class="type">uint32_t</span> *bandwidth</code></em>,
<em class="parameter"><code><span class="type">uint32_t</span> *lifetime</code></em>,
<em class="parameter"><code><a class="link" href="libnice-TURN.html#StunUsageTurnCompatibility" title="enum StunUsageTurnCompatibility"><span class="type">StunUsageTurnCompatibility</span></a> compatibility</code></em>);</pre>
<p>
Process a TURN Allocate response and extract the necessary information from
the message
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>msg</code></em> :</span></p></td>
<td>The message containing the response</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>relay_addr</code></em> :</span></p></td>
<td>A pointer to a <span class="type">sockaddr</span> structure to fill with the relay address
that the TURN server allocated for us</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>relay_addrlen</code></em> :</span></p></td>
<td>The length of <em class="parameter"><code>relay_addr</code></em>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>addr</code></em> :</span></p></td>
<td>A pointer to a <span class="type">sockaddr</span> structure to fill with the mapped address
that the STUN response contains.
This argument will only be filled if the return value
of the function is <a class="link" href="libnice-TURN.html#STUN-USAGE-TURN-RETURN-MAPPED-SUCCESS:CAPS"><span class="type">STUN_USAGE_TURN_RETURN_MAPPED_SUCCESS</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>addrlen</code></em> :</span></p></td>
<td>The length of <em class="parameter"><code>addr</code></em>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>alternate_server</code></em> :</span></p></td>
<td>A pointer to a <span class="type">sockaddr</span> structure to fill with the
address of an alternate server to which we should send our new STUN
Allocate request, in case the currently used TURN server is requesting the use
of an alternate server. This argument will only be filled if the return value
of the function is <a class="link" href="libnice-TURN.html#STUN-USAGE-TURN-RETURN-ALTERNATE-SERVER:CAPS"><span class="type">STUN_USAGE_TURN_RETURN_ALTERNATE_SERVER</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>alternate_server_len</code></em> :</span></p></td>
<td>The length of <em class="parameter"><code>alternate_server</code></em>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>bandwidth</code></em> :</span></p></td>
<td>A pointer to fill with the bandwidth the TURN server allocated us</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>lifetime</code></em> :</span></p></td>
<td>A pointer to fill with the lifetime of the allocation</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>compatibility</code></em> :</span></p></td>
<td>The compatibility mode to use for processing the Allocation
response</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>A <a class="link" href="libnice-TURN.html#StunUsageTurnReturn" title="enum StunUsageTurnReturn"><span class="type">StunUsageTurnReturn</span></a> value</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="stun-usage-turn-refresh-process"></a><h3>stun_usage_turn_refresh_process ()</h3>
<pre class="programlisting"><a class="link" href="libnice-TURN.html#StunUsageTurnReturn" title="enum StunUsageTurnReturn"><span class="returnvalue">StunUsageTurnReturn</span></a> stun_usage_turn_refresh_process (<em class="parameter"><code><a class="link" href="libnice-StunMessage.html#StunMessage" title="struct StunMessage"><span class="type">StunMessage</span></a> *msg</code></em>,
<em class="parameter"><code><span class="type">uint32_t</span> *lifetime</code></em>,
<em class="parameter"><code><a class="link" href="libnice-TURN.html#StunUsageTurnCompatibility" title="enum StunUsageTurnCompatibility"><span class="type">StunUsageTurnCompatibility</span></a> compatibility</code></em>);</pre>
<p>
Process a TURN Refresh response and extract the necessary information from
the message
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>msg</code></em> :</span></p></td>
<td>The message containing the response</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>lifetime</code></em> :</span></p></td>
<td>A pointer to fill with the lifetime of the allocation</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>compatibility</code></em> :</span></p></td>
<td>The compatibility mode to use for processing the Refresh
response</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>A <a class="link" href="libnice-TURN.html#StunUsageTurnReturn" title="enum StunUsageTurnReturn"><span class="type">StunUsageTurnReturn</span></a> value. A <a class="link" href="libnice-TURN.html#STUN-USAGE-TURN-RETURN-RELAY-SUCCESS:CAPS"><span class="type">STUN_USAGE_TURN_RETURN_RELAY_SUCCESS</span></a>
means the Refresh was successful, but no relay address is given (kept the same
as for the original allocation)</td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
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