UPnPSubscriber subscriber;
public void doSubscribe()
{
if (subscriber == null)
subscriber = new UPnPSubscriber(Activator.context,this);
UPnPDeviceTreeNode selectedNode = getSelectedNode();
String serviceId = getServiceId(selectedNode);
String parentId = getDeviceId(selectedNode);
LogPanel.log("subscribing ... "+ "ServiceId ["+serviceId+"] of DeviceId ["+parentId +"]");