Mono.Nat.UpnpSearcher.Handle C# (CSharp) Méthode

        public void Handle(IPAddress localAddress, byte[] response, IPEndPoint endpoint)
        {
            // Convert it to a string for easy parsing
            string dataString = null;

            // No matter what, this method should never throw an exception. If something goes wrong
            // we should still be in a position to handle the next reply correctly.
            try {
	            string urn;
                dataString = Encoding.UTF8.GetString(response);

				if (NatUtility.Verbose)
					NatUtility.Log("UPnP Response: {0}", dataString);

				/* For UPnP Port Mapping we need ot find either WANPPPConnection or WANIPConnection. 
				 Any other device type is no good to us for this purpose. See the IGP overview paper 
				 page 5 for an overview of device types and their hierarchy.
				 http://upnp.org/specs/gw/UPnP-gw-InternetGatewayDevice-v1-Device.pdf */

				/* TODO: Currently we are assuming version 1 of the protocol. We should figure out which
				 version it is and apply the correct URN. */

				/* Some routers don't correctly implement the version ID on the URN, so we only search for the type
				 prefix. */

                string log = "UPnP Response: Router advertised a '{0}' service";
                StringComparison c = StringComparison.OrdinalIgnoreCase;
                if (dataString.IndexOf("urn:schemas-upnp-org:service:WANIPConnection:", c) != -1) {
	                urn = "urn:schemas-upnp-org:service:WANIPConnection:1";
	                NatUtility.Log(log, "urn:schemas-upnp-org:service:WANIPConnection:1");
                } else if (dataString.IndexOf("urn:schemas-upnp-org:service:WANPPPConnection:", c) != -1) {
					urn = "urn:schemas-upnp-org:service:WANPPPConnection:1";
					NatUtility.Log(log, "urn:schemas-upnp-org:service:WANPPPConnection:");
				} else
					return;

                // We have an internet gateway device now
                UpnpNatDevice d = new UpnpNatDevice(localAddress, dataString, urn);

                if (devices.Contains(d))
                {
                    // We already have found this device, so we just refresh it to let people know it's
                    // Still alive. If a device doesn't respond to a search, we dump it.
                    devices[devices.IndexOf(d)].LastSeen = DateTime.Now;
                }
                else
                {

					// If we send 3 requests at a time, ensure we only fetch the services list once
					// even if three responses are received
					if (lastFetched.ContainsKey(endpoint.Address))
					{
						DateTime last = lastFetched[endpoint.Address];
						if ((DateTime.Now - last) < TimeSpan.FromSeconds(20))
							return;
					}
					lastFetched[endpoint.Address] = DateTime.Now;
					
                    // Once we've parsed the information we need, we tell the device to retrieve it's service list
                    // Once we successfully receive the service list, the callback provided will be invoked.
					NatUtility.Log("Fetching service list: {0}", d.HostEndPoint);
                    d.GetServicesList(DeviceSetupComplete);
                }
            }
            catch (Exception ex)
            {
                Trace.WriteLine("Unhandled exception when trying to decode a device's response Send me the following data: ");
                Trace.WriteLine("ErrorMessage:");
                Trace.WriteLine(ex.Message);
                Trace.WriteLine("Data string:");
                Trace.WriteLine(dataString);
            }
        }

        public Task Handle(IPAddress localAddress, UpnpDeviceInfo deviceInfo, IPEndPoint endpoint, NatProtocol protocol)
        {
            switch (protocol)
            {
            case NatProtocol.Upnp:
                var searcher = new UpnpSearcher(Logger, HttpClient);
                searcher.DeviceFound += Searcher_DeviceFound;
                return(searcher.Handle(localAddress, deviceInfo, endpoint));

            default:
                throw new ArgumentException("Unexpected protocol: " + protocol);
            }
        }