/// <summary>
/// ネットワーク内の UPnP Wan サービスを探す。ちょっと時間がかかる。
/// 見つからなかったときはnullが返るので気をつける。
/// </summary>
/// <returns></returns>
public static UPnPWanService FindUPnPWanService()
{
Guid UPnPDeviceFinderClass = new Guid("E2085F28-FEB7-404A-B8E7-E659BDEAAA02");
IUPnPDeviceFinder finder = Activator.CreateInstance(Type.GetTypeFromCLSID(UPnPDeviceFinderClass)) as IUPnPDeviceFinder;
string[] deviceTypes = { "urn:schemas-upnp-org:service:WANPPPConnection:1", "urn:schemas-upnp-org:service:WANIPConnection:1", };
string[] serviceNames = { "urn:upnp-org:serviceId:WANPPPConn1", "urn:upnp-org:serviceId:WANIPConn1", };
foreach (string deviceType in deviceTypes)
{
foreach (IUPnPDevice device in finder.FindByType(deviceType, 0))
{
foreach (string serviceName in serviceNames)
{
foreach (IUPnPService service in device.Services)
{
return new UPnPWanService()
{
service = service
}
}
}
}
}
;
return(null);
}
// Initiate UPNP discovery
void SearchForDevices()
{
IntPtr pCB;
// Create an instance of a UPNPFinder
Type tFinder = Type.GetTypeFromCLSID(CLSID_UPnPFinder);
object oInst = Activator.CreateInstance(tFinder);
_finder = (IUPnPDeviceFinder)oInst;
// Create a callback object
_finderCallback = new Callback(this);
pCB = Marshal.GetComInterfaceForObject(_finderCallback, typeof(IUPnPDeviceFinderCallback));
// Pin the callback to ensure it does not get garbage-collected
_hCallback = GCHandle.Alloc(_finderCallback, GCHandleType.Pinned);
// Start search
_asyncFind = _finder.CreateAsyncFind("upnp:rootdevice", 0, pCB);
Debug.WriteLine("Starting search");
_finder.StartAsyncFind(_asyncFind);
}
