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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Unix</title>
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</tr>
<tr><td colspan="5" class="shortcuts"><nobr><a href="#id397998" class="shortcut">Top</a>
                  &#160;|&#160;
                  <a href="#id398605" class="shortcut">Description</a></nobr></td></tr>
</table>
<div class="refentry" lang="en">
<a name="gnet-unix"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2>
<a name="id397998"></a><span class="refentrytitle">Unix</span>
</h2>
<p>Unix &#8212; Unix socket</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<pre class="synopsis">

#include &lt;gnet.h&gt;


                    <a href="gnet-unix.html#GUnixSocket">GUnixSocket</a>;
<a href="gnet-unix.html#GUnixSocket">GUnixSocket</a>*        <a href="gnet-unix.html#gnet-unix-socket-new">gnet_unix_socket_new</a>                (const gchar *path);
<a href="gnet-unix.html#GUnixSocket">GUnixSocket</a>*        <a href="gnet-unix.html#gnet-unix-socket-new-abstract">gnet_unix_socket_new_abstract</a>       (const gchar *path);
void                <a href="gnet-unix.html#gnet-unix-socket-delete">gnet_unix_socket_delete</a>             (<a href="gnet-unix.html#GUnixSocket">GUnixSocket</a> *socket);
void                <a href="gnet-unix.html#gnet-unix-socket-ref">gnet_unix_socket_ref</a>                (<a href="gnet-unix.html#GUnixSocket">GUnixSocket</a> *socket);
void                <a href="gnet-unix.html#gnet-unix-socket-unref">gnet_unix_socket_unref</a>              (<a href="gnet-unix.html#GUnixSocket">GUnixSocket</a> *socket);
GIOChannel*         <a href="gnet-unix.html#gnet-unix-socket-get-io-channel">gnet_unix_socket_get_io_channel</a>     (<a href="gnet-unix.html#GUnixSocket">GUnixSocket</a> *socket);
gchar*              <a href="gnet-unix.html#gnet-unix-socket-get-path">gnet_unix_socket_get_path</a>           (const <a href="gnet-unix.html#GUnixSocket">GUnixSocket</a> *socket);
<a href="gnet-unix.html#GUnixSocket">GUnixSocket</a>*        <a href="gnet-unix.html#gnet-unix-socket-server-new">gnet_unix_socket_server_new</a>         (const gchar *path);
<a href="gnet-unix.html#GUnixSocket">GUnixSocket</a>*        <a href="gnet-unix.html#gnet-unix-socket-server-new-abstract">gnet_unix_socket_server_new_abstract</a>
                                                        (const gchar *path);
<a href="gnet-unix.html#GUnixSocket">GUnixSocket</a>*        <a href="gnet-unix.html#gnet-unix-socket-server-accept">gnet_unix_socket_server_accept</a>      (const <a href="gnet-unix.html#GUnixSocket">GUnixSocket</a> *socket);
<a href="gnet-unix.html#GUnixSocket">GUnixSocket</a>*        <a href="gnet-unix.html#gnet-unix-socket-server-accept-nonblock">gnet_unix_socket_server_accept_nonblock</a>
                                                        (const <a href="gnet-unix.html#GUnixSocket">GUnixSocket</a> *socket);
</pre>
</div>
<div class="refsect1" lang="en">
<a name="id398605"></a><h2>Description</h2>
<p>
The Unix module provides support for Unix sockets.  Unix sockets are
used to communicate between processes.  Unix sockets are for Unix
operating systems only and are not supported in Windows.  GNet's Unix
sockets are stream-based (like TCP), not datagram-based (like UDP).
Unix socket addresses are file names, like "/tmp/my_unix_socket".
</p>
<p>
To connect to a existing Unix socket, call <a href="gnet-unix.html#gnet-unix-socket-new"><code class="function">gnet_unix_socket_new()</code></a>.  To
create a new Unix socket other processes will connect to, call
<a href="gnet-unix.html#gnet-unix-socket-server-new"><code class="function">gnet_unix_socket_server_new()</code></a>.
</p>
<p>
The functions in this module are similar to those in the TCP module.
See the documentation on TCP sockets for more information.
</p>
</div>
<div class="refsect1" lang="en">
<a name="id398651"></a><h2>Details</h2>
<div class="refsect2" lang="en">
<a name="id398661"></a><h3>
<a name="GUnixSocket"></a>GUnixSocket</h3>
<a class="indexterm" name="id398673"></a><pre class="programlisting">typedef struct _GUnixSocket GUnixSocket;</pre>
<p>
A <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a> structure represents a Unix socket.  The
 implementation is hidden.</p>
<p>

</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id398700"></a><h3>
<a name="gnet-unix-socket-new"></a>gnet_unix_socket_new ()</h3>
<a class="indexterm" name="id398712"></a><pre class="programlisting"><a href="gnet-unix.html#GUnixSocket">GUnixSocket</a>*        gnet_unix_socket_new                (const gchar *path);</pre>
<p>
Creates a <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a> and connects to <em class="parameter"><code>path</code></em>.  This function will
 block to connect.  Use this constructor to create a <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a>
 for a client.</p>
<p>

</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>path</code></em>&#160;:</span></td>
<td> path
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></td>
<td> a new <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a>; NULL on failure.

</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id398802"></a><h3>
<a name="gnet-unix-socket-new-abstract"></a>gnet_unix_socket_new_abstract ()</h3>
<a class="indexterm" name="id398817"></a><pre class="programlisting"><a href="gnet-unix.html#GUnixSocket">GUnixSocket</a>*        gnet_unix_socket_new_abstract       (const gchar *path);</pre>
<p>
Creates a <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a> and connects to <em class="parameter"><code>path</code></em> in the abstract
 unix socket domain. This function will block to connect.  Use this
 constructor to create a <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a> for a client.
</p>
<p>
 If the abstract unix sockets are not available on the platform in use,
 this function will behave like <a href="gnet-unix.html#gnet-unix-socket-new"><code class="function">gnet_unix_socket_new()</code></a>.</p>
<p>

</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>path</code></em>&#160;:</span></td>
<td> path
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></td>
<td> a new <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a>, or NULL on failure.

</td>
</tr>
</tbody>
</table></div>
<p class="since">Since  2.0.8
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id398929"></a><h3>
<a name="gnet-unix-socket-delete"></a>gnet_unix_socket_delete ()</h3>
<a class="indexterm" name="id398941"></a><pre class="programlisting">void                gnet_unix_socket_delete             (<a href="gnet-unix.html#GUnixSocket">GUnixSocket</a> *socket);</pre>
<p>
Deletes a <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a>.</p>
<p>

</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><span class="term"><em class="parameter"><code>socket</code></em>&#160;:</span></td>
<td> a <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id399005"></a><h3>
<a name="gnet-unix-socket-ref"></a>gnet_unix_socket_ref ()</h3>
<a class="indexterm" name="id399018"></a><pre class="programlisting">void                gnet_unix_socket_ref                (<a href="gnet-unix.html#GUnixSocket">GUnixSocket</a> *socket);</pre>
<p>
Adds a reference to a <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a>.</p>
<p>

</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><span class="term"><em class="parameter"><code>socket</code></em>&#160;:</span></td>
<td> a <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id399082"></a><h3>
<a name="gnet-unix-socket-unref"></a>gnet_unix_socket_unref ()</h3>
<a class="indexterm" name="id399094"></a><pre class="programlisting">void                gnet_unix_socket_unref              (<a href="gnet-unix.html#GUnixSocket">GUnixSocket</a> *socket);</pre>
<p>
Removes a reference from a <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a>.  A <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a> is
 deleted when the reference count reaches 0.</p>
<p>

</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><span class="term"><em class="parameter"><code>socket</code></em>&#160;:</span></td>
<td> a <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id399167"></a><h3>
<a name="gnet-unix-socket-get-io-channel"></a>gnet_unix_socket_get_io_channel ()</h3>
<a class="indexterm" name="id399180"></a><pre class="programlisting">GIOChannel*         gnet_unix_socket_get_io_channel     (<a href="gnet-unix.html#GUnixSocket">GUnixSocket</a> *socket);</pre>
<p>
Gets the <span class="type">GIOChannel</span> of a <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a>.
</p>
<p>
 For a client socket, the <span class="type">GIOChannel</span> represents the data stream.
 Use it like you would any other <span class="type">GIOChannel</span>.
</p>
<p>
 For a server socket, however, the <span class="type">GIOChannel</span> represents the
 listening socket.  When it's readable, there's a connection
 waiting to be accepted.
</p>
<p>
 Every <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a> has one and only one <span class="type">GIOChannel</span>.  If you ref
 the channel, then you must unref it eventually.  Do not close the
 channel.  The channel is closed by GNet when the socket is
 deleted.</p>
<p>

</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>socket</code></em>&#160;:</span></td>
<td> a <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a>
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></td>
<td> a <span class="type">GIOChannel</span>.

</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id399323"></a><h3>
<a name="gnet-unix-socket-get-path"></a>gnet_unix_socket_get_path ()</h3>
<a class="indexterm" name="id399336"></a><pre class="programlisting">gchar*              gnet_unix_socket_get_path           (const <a href="gnet-unix.html#GUnixSocket">GUnixSocket</a> *socket);</pre>
<p>
Gets the path of a <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a>.</p>
<p>

</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>socket</code></em>&#160;:</span></td>
<td> a <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a>
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></td>
<td> the path.

</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id399410"></a><h3>
<a name="gnet-unix-socket-server-new"></a>gnet_unix_socket_server_new ()</h3>
<a class="indexterm" name="id399423"></a><pre class="programlisting"><a href="gnet-unix.html#GUnixSocket">GUnixSocket</a>*        gnet_unix_socket_server_new         (const gchar *path);</pre>
<p>
Creates a <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a> bound to <em class="parameter"><code>path</code></em>.  Use this constructor to
 create a <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a> for a server.</p>
<p>

</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>path</code></em>&#160;:</span></td>
<td> path
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></td>
<td> a new <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a>; NULL on error.

</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id399513"></a><h3>
<a name="gnet-unix-socket-server-new-abstract"></a>gnet_unix_socket_server_new_abstract ()</h3>
<a class="indexterm" name="id399528"></a><pre class="programlisting"><a href="gnet-unix.html#GUnixSocket">GUnixSocket</a>*        gnet_unix_socket_server_new_abstract
                                                        (const gchar *path);</pre>
<p>
Creates a <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a> bound to <em class="parameter"><code>path</code></em> in the abstract unix socket
 domain.  Use this constructor to create a <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a> for a
 server.
</p>
<p>
 If the abstract unix sockets are not available on the platform in use,
 this function will behave the same as <a href="gnet-unix.html#gnet-unix-socket-server-new"><code class="function">gnet_unix_socket_server_new()</code></a>.</p>
<p>

</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>path</code></em>&#160;:</span></td>
<td> path
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></td>
<td> a new <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a>, or NULL on error.


</td>
</tr>
</tbody>
</table></div>
<p class="since">Since  2.0.8
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id399640"></a><h3>
<a name="gnet-unix-socket-server-accept"></a>gnet_unix_socket_server_accept ()</h3>
<a class="indexterm" name="id399653"></a><pre class="programlisting"><a href="gnet-unix.html#GUnixSocket">GUnixSocket</a>*        gnet_unix_socket_server_accept      (const <a href="gnet-unix.html#GUnixSocket">GUnixSocket</a> *socket);</pre>
<p>
Accepts a connection from a <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a>.  The socket must have
 been created using <a href="gnet-unix.html#gnet-unix-socket-server-new"><code class="function">gnet_unix_socket_server_new()</code></a>. This function
 will block.  Even if the socket's <span class="type">GIOChannel</span> is readable, the
 function may still block.</p>
<p>

</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>socket</code></em>&#160;:</span></td>
<td> a <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a>
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></td>
<td> a new <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a> representing a new connection; NULL on
 error.

</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id399756"></a><h3>
<a name="gnet-unix-socket-server-accept-nonblock"></a>gnet_unix_socket_server_accept_nonblock ()</h3>
<a class="indexterm" name="id399769"></a><pre class="programlisting"><a href="gnet-unix.html#GUnixSocket">GUnixSocket</a>*        gnet_unix_socket_server_accept_nonblock
                                                        (const <a href="gnet-unix.html#GUnixSocket">GUnixSocket</a> *socket);</pre>
<p>
Accepts a connection from a <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a> without blocking.  The
 socket must have been created using <a href="gnet-unix.html#gnet-unix-socket-server-new"><code class="function">gnet_unix_socket_server_new()</code></a>.
</p>
<p>
 Note that if the socket's <span class="type">GIOChannel</span> is readable, then there is
 PROBABLY a new connection.  It is possible for the connection
 to close by the time this function is called, so it may return
 NULL.</p>
<p>

</p>
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<td><span class="term"><em class="parameter"><code>socket</code></em>&#160;:</span></td>
<td> a <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a>
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<td><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></td>
<td> a new <a href="gnet-unix.html#GUnixSocket"><span class="type">GUnixSocket</span></a> representing a new connection; NULL
 otherwise.

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