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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
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<title>Port Channel: Spice-GTK Reference Manual</title>
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<td width="100%" align="left" class="shortcuts">
<a href="#" class="shortcut">Top</a><span id="nav_description"> <span class="dim">|</span>
<a href="#SpicePortChannel.description" class="shortcut">Description</a></span><span id="nav_hierarchy"> <span class="dim">|</span>
<a href="#SpicePortChannel.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_properties"> <span class="dim">|</span>
<a href="#SpicePortChannel.properties" class="shortcut">Properties</a></span><span id="nav_signals"> <span class="dim">|</span>
<a href="#SpicePortChannel.signals" class="shortcut">Signals</a></span>
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<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td>
<td><a accesskey="u" href="ch02.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td>
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<div class="refentry">
<a name="SpicePortChannel"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="SpicePortChannel.top_of_page"></a>Port Channel</span></h2>
<p>Port Channel — private communication channel</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="SpicePortChannel.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="SpicePortChannel.functions"></a><h2>Functions</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="SpicePortChannel.html#spice-port-event" title="spice_port_event ()">spice_port_event</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="SpicePortChannel.html#spice-port-write-async" title="spice_port_write_async ()">spice_port_write_async</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gssize"><span class="returnvalue">gssize</span></a>
</td>
<td class="function_name">
<a class="link" href="SpicePortChannel.html#spice-port-write-finish" title="spice_port_write_finish ()">spice_port_write_finish</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="SpicePortChannel.properties"></a><h2>Properties</h2>
<div class="informaltable"><table border="0">
<colgroup>
<col width="150px" class="properties_type">
<col width="300px" class="properties_name">
<col width="200px" class="properties_flags">
</colgroup>
<tbody>
<tr>
<td class="property_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</td>
<td class="property_name"><a class="link" href="SpicePortChannel.html#SpicePortChannel--port-name" title="The “port-name” property">port-name</a></td>
<td class="property_flags">Read</td>
</tr>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td>
<td class="property_name"><a class="link" href="SpicePortChannel.html#SpicePortChannel--port-opened" title="The “port-opened” property">port-opened</a></td>
<td class="property_flags">Read</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="SpicePortChannel.signals"></a><h2>Signals</h2>
<div class="informaltable"><table border="0">
<colgroup>
<col width="150px" class="signals_return">
<col width="300px" class="signals_name">
<col width="200px" class="signals_flags">
</colgroup>
<tbody>
<tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="SpicePortChannel.html#SpicePortChannel-port-data" title="The “port-data” signal">port-data</a></td>
<td class="signal_flags"><a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></td>
</tr>
<tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="SpicePortChannel.html#SpicePortChannel-port-event" title="The “port-event” signal">port-event</a></td>
<td class="signal_flags"><a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="SpicePortChannel.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="SpicePortChannel.html#SpicePortChannel-struct" title="struct SpicePortChannel">SpicePortChannel</a></td>
</tr>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="SpicePortChannel.html#SpicePortChannelClass" title="struct SpicePortChannelClass">SpicePortChannelClass</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="SpicePortChannel.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen"> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject">GObject</a>
<span class="lineart">╰──</span> <a class="link" href="SpiceChannel.html" title="Spice Channel">SpiceChannel</a>
<span class="lineart">╰──</span> SpicePortChannel
<span class="lineart">╰──</span> <a class="link" href="SpiceWebdavChannel.html" title="WebDAV Channel">SpiceWebdavChannel</a>
</pre>
</div>
<div class="refsect1">
<a name="SpicePortChannel.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include <spice-client.h>
</pre>
</div>
<div class="refsect1">
<a name="SpicePortChannel.description"></a><h2>Description</h2>
<p>A Spice port channel carry arbitrary data between the Spice client
and the Spice server. It may be used to provide additional
services on top of a Spice connection. For example, a channel can
be associated with the qemu monitor for the client to interact
with it, just like any qemu chardev. Or it may be used with
various protocols, such as the Spice Controller.</p>
<p>A port kind is identified simply by a fqdn, such as
org.qemu.monitor, org.spice.spicy.test or org.ovirt.controller...</p>
<p>Once connected and initialized, the client may read the name of the
port via SpicePortChannel:port-name.</p>
<p>When the other end of the port is ready,
SpicePortChannel:port-opened is set to <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> and you can start
receiving data via the signal SpicePortChannel::port-data, or
sending data via <a class="link" href="SpicePortChannel.html#spice-port-write-async" title="spice_port_write_async ()"><code class="function">spice_port_write_async()</code></a>.</p>
</div>
<div class="refsect1">
<a name="SpicePortChannel.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="spice-port-event"></a><h3>spice_port_event ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
spice_port_event (<em class="parameter"><code><a class="link" href="SpicePortChannel.html" title="Port Channel"><span class="type">SpicePortChannel</span></a> *port</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> event</code></em>);</pre>
<p>Send an event to the port.</p>
<p>Note: The values SPICE_PORT_EVENT_CLOSED and
SPICE_PORT_EVENT_OPENED are managed by the channel connection
state.</p>
<div class="refsect3">
<a name="id-1.2.3.12.11.2.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>port</p></td>
<td class="parameter_description"><p>a <a class="link" href="SpicePortChannel.html" title="Port Channel"><span class="type">SpicePortChannel</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>event</p></td>
<td class="parameter_description"><p>a SPICE_PORT_EVENT value</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 0.15</p>
</div>
<hr>
<div class="refsect2">
<a name="spice-port-write-async"></a><h3>spice_port_write_async ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
spice_port_write_async (<em class="parameter"><code><a class="link" href="SpicePortChannel.html" title="Port Channel"><span class="type">SpicePortChannel</span></a> *port</code></em>,
<em class="parameter"><code>const <span class="type">void</span> *buffer</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gsize"><span class="type">gsize</span></a> count</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gio/GCancellable.html"><span class="type">GCancellable</span></a> *cancellable</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gio/GAsyncResult.html#GAsyncReadyCallback"><span class="type">GAsyncReadyCallback</span></a> callback</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>Request an asynchronous write of count bytes from <em class="parameter"><code>buffer</code></em>
into the
<em class="parameter"><code>port</code></em>
. When the operation is finished <em class="parameter"><code>callback</code></em>
will be called. You
can then call <a class="link" href="SpicePortChannel.html#spice-port-write-finish" title="spice_port_write_finish ()"><code class="function">spice_port_write_finish()</code></a> to get the result of
the operation.</p>
<div class="refsect3">
<a name="id-1.2.3.12.11.3.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>port</p></td>
<td class="parameter_description"><p>A <a class="link" href="SpicePortChannel.html" title="Port Channel"><span class="type">SpicePortChannel</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>buffer</p></td>
<td class="parameter_description"><p> the buffer
containing the data to write. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=count][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> guint8]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>count</p></td>
<td class="parameter_description"><p>the number of bytes to write</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p> optional GCancellable object, NULL to ignore. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>callback</p></td>
<td class="parameter_description"><p> callback to call when the request is satisfied. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="The callback is valid until first called."><span class="acronym">scope async</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p> the data to pass to callback function. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 0.15</p>
</div>
<hr>
<div class="refsect2">
<a name="spice-port-write-finish"></a><h3>spice_port_write_finish ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gssize"><span class="returnvalue">gssize</span></a>
spice_port_write_finish (<em class="parameter"><code><a class="link" href="SpicePortChannel.html" title="Port Channel"><span class="type">SpicePortChannel</span></a> *port</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gio/GAsyncResult.html"><span class="type">GAsyncResult</span></a> *result</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Finishes a port write operation.</p>
<div class="refsect3">
<a name="id-1.2.3.12.11.4.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>port</p></td>
<td class="parameter_description"><p>a <a class="link" href="SpicePortChannel.html" title="Port Channel"><span class="type">SpicePortChannel</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>result</p></td>
<td class="parameter_description"><p>a <a href="/usr/share/gtk-doc/html/gio/GAsyncResult.html"><span class="type">GAsyncResult</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>a <a href="/usr/share/gtk-doc/html/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> location to store the error occurring, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>
to ignore</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.3.12.11.4.6"></a><h4>Returns</h4>
<p> a <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gssize"><span class="type">gssize</span></a> containing the number of bytes written to the stream.</p>
</div>
<p class="since">Since: 0.15</p>
</div>
</div>
<div class="refsect1">
<a name="SpicePortChannel.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="SpicePortChannel-struct"></a><h3>struct SpicePortChannel</h3>
<pre class="programlisting">struct SpicePortChannel;</pre>
<p>The <a class="link" href="SpicePortChannel.html" title="Port Channel"><span class="type">SpicePortChannel</span></a> struct is opaque and should not be accessed directly.</p>
</div>
<hr>
<div class="refsect2">
<a name="SpicePortChannelClass"></a><h3>struct SpicePortChannelClass</h3>
<pre class="programlisting">struct SpicePortChannelClass {
SpiceChannelClass parent_class;
};
</pre>
<p>Class structure for <a class="link" href="SpicePortChannel.html" title="Port Channel"><span class="type">SpicePortChannel</span></a>.</p>
<div class="refsect3">
<a name="id-1.2.3.12.12.3.5"></a><h4>Members</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="300px" class="struct_members_name">
<col class="struct_members_description">
<col width="200px" class="struct_members_annotations">
</colgroup>
<tbody><tr>
<td class="struct_member_name"><p><a class="link" href="SpiceChannel.html#SpiceChannelClass" title="SpiceChannelClass"><span class="type">SpiceChannelClass</span></a> <em class="structfield"><code><a name="SpicePortChannelClass.parent-class"></a>parent_class</code></em>;</p></td>
<td class="struct_member_description"><p>Parent class.</p></td>
<td class="struct_member_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
</div>
<div class="refsect1">
<a name="SpicePortChannel.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="SpicePortChannel--port-name"></a><h3>The <code class="literal">“port-name”</code> property</h3>
<pre class="programlisting"> “port-name” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</pre>
<p>Port name.</p>
<p>Flags: Read</p>
<p>Default value: NULL</p>
</div>
<hr>
<div class="refsect2">
<a name="SpicePortChannel--port-opened"></a><h3>The <code class="literal">“port-opened”</code> property</h3>
<pre class="programlisting"> “port-opened” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre>
<p>Port opened.</p>
<p>Flags: Read</p>
<p>Default value: FALSE</p>
</div>
</div>
<div class="refsect1">
<a name="SpicePortChannel.signal-details"></a><h2>Signal Details</h2>
<div class="refsect2">
<a name="SpicePortChannel-port-data"></a><h3>The <code class="literal">“port-data”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="SpicePortChannel.html" title="Port Channel"><span class="type">SpicePortChannel</span></a> *channel,
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> data,
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> size,
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data)</pre>
<p>The <a class="link" href="SpicePortChannel.html#SpicePortChannel-port-data" title="The “port-data” signal"><span class="type">“port-data”</span></a> signal is emitted when new
port data is received.</p>
<div class="refsect3">
<a name="id-1.2.3.12.14.2.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>channel</p></td>
<td class="parameter_description"><p>the channel that emitted the signal</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>data</p></td>
<td class="parameter_description"><p>the data received</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>size</p></td>
<td class="parameter_description"><p>number of bytes read</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: <a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></p>
<p class="since">Since: 0.15</p>
</div>
<hr>
<div class="refsect2">
<a name="SpicePortChannel-port-event"></a><h3>The <code class="literal">“port-event”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="SpicePortChannel.html" title="Port Channel"><span class="type">SpicePortChannel</span></a> *channel,
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> event,
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data)</pre>
<p>The <a class="link" href="SpicePortChannel.html#SpicePortChannel-port-event" title="The “port-event” signal"><span class="type">“port-event”</span></a> signal is emitted when new
port event is received.</p>
<div class="refsect3">
<a name="id-1.2.3.12.14.3.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>channel</p></td>
<td class="parameter_description"><p>the channel that emitted the signal</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>event</p></td>
<td class="parameter_description"><p>the event received</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>size</p></td>
<td class="parameter_description"><p>number of bytes read</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: <a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></p>
<p class="since">Since: 0.15</p>
</div>
</div>
<div class="refsect1">
<a name="SpicePortChannel.see-also"></a><h2>See Also</h2>
<p><a class="link" href="SpiceChannel.html" title="Spice Channel"><span class="type">SpiceChannel</span></a></p>
</div>
</div>
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