php-doc-en/reference/gupnp/examples.xml

<?xml version="1.0" encoding="utf-8"?>
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<chapter xml:id="gupnp.examples" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 &reftitle.examples;
 <para>
  This example shows how to obtain information about all devices and services. 
  It starts infinite loop (use CLI) and while any of available devices or services 
  is found proper callback function will be invoked.
 </para>
 <example>
  <title>Search for all UPnP devices and services.</title>
  <programlisting role="php">
<![CDATA[
<?php

/* Callback for available device */
function device_proxy_available_cb($proxy, $arg)
{
	$info = gupnp_device_info_get($proxy);

	$type = $info['device_type'];
	$location = $info['location'];

	printf("Device available:\n");
	printf("\ttype:     %s\n", $type);
	printf("\tlocation: %s\n", $location);
}

/* Callback for available service */
function service_proxy_available_cb($proxy, $arg)
{
	$info = gupnp_service_info_get($proxy);

	$type = $info['service_type'];
	$location = $info['location'];

	printf("Service available:\n");
	printf("\ttype:     %s\n", $type);
	printf("\tlocation: %s\n", $location);
}

/* Create the UPnP context */
$context = gupnp_context_new();
if (!$context) {
	printf("Error creating the GUPnP context\n");
	exit(-1);
}

/* We're interested in everything */
$cp = gupnp_control_point_new($context, "ssdp:all");

/* Set callbacks */
gupnp_control_point_callback_set($cp, 
	GUPNP_SIGNAL_DEVICE_PROXY_AVAILABLE, 'device_proxy_available_cb');
gupnp_control_point_callback_set($cp, 
	GUPNP_SIGNAL_SERVICE_PROXY_AVAILABLE, 'service_proxy_available_cb');

/* Start for browsing (infinite loop, hit Ctrl-C to interrupt) */
gupnp_control_point_browse_start($cp);

?>
]]>
  </programlisting>
 </example>
</chapter>

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