void GetDocumentUrl()
{
IUPnPDeviceDocumentAccess blah = _device as IUPnPDeviceDocumentAccess;
if (blah != null)
{
_documentUrl = new Uri(blah.GetDocumentURL(), UriKind.Absolute);
PropertyChanged(this, new PropertyChangedEventArgs("DocumentUrl"));
}
}
/// <summary>
/// Retrieves the local IP addresses of the UPnP-device.
/// </summary>
/// <param name="device">The UPnP device the method is being called for.</param>
/// <returns>An enumerable collection of local IP addresses under which
/// the UPnP-device can be reached.</returns>
/// <remarks>This is an extension method for the IUPnPDeviceDocumentAccess
/// class.</remarks>
static IEnumerable <IPAddress> GetLocalIpAddresses(
this IUPnPDeviceDocumentAccess device)
{
try {
// Get the devices URL and extract the host component of it.
Uri uri = new Uri(device.GetDocumentURL());
return(Dns.GetHostAddresses(uri.Host));
} catch (Exception e) {
throw new InvalidOperationException("The local IP addresses could not " +
"be obtained.", e);
}
}
private UPnPService GetService(UPnPDevice device, string serviceType, out IUPnPDeviceDocumentAccess deviceAccess)
{
foreach (UPnPService service in device.Services)
{
if (StringComparer.OrdinalIgnoreCase.Compare(service.ServiceTypeIdentifier, serviceType) == 0)
{
deviceAccess = device as IUPnPDeviceDocumentAccess;
return(service);
}
}
deviceAccess = null;
return(null);
}
private UPnPService GetServiceSync(string deviceId, string serviceType, out IUPnPDeviceDocumentAccess deviceAccess)
{
lock (this)
{
UPnPDevice device;
if (this.devices.ContainsKey(deviceId))
{
device = this.devices[deviceId];
}
else
{
throw new MediaCenterException("Device " + deviceId + " not found");
}
return(GetService(device, serviceType, out deviceAccess));
}
}
