Microsoft.Protocols.TestSuites.Rdpeusb.RdpeusbTestSutie.S3_EUSB_OperateIo_GetCurrentFrameNumber C# (CSharp) Method

        public void S3_EUSB_OperateIo_GetCurrentFrameNumber()
        {
            LogComment("S3_EUSB_OperateIo_GetCurrentFrameNumber");

            LogComment("1. Creates the control virtual channel, exchanges capabilities then notifies that the channel is created.");
            context.ControlChannel =  CreateVirtualChannel();

            LogComment("2. Receives an add virtual channel request.");
            rdpeusbAdapter.ExpectAddVirtualChannel(context.ControlChannel);

            LogComment("3. Creates a new virtual channel for the device.");
            DynamicVirtualChannel channel = CreateVirtualChannel();

            LogComment("4. Receives an add device request.");
            EusbDeviceContext device = rdpeusbAdapter.ExpectAddDevice(channel);

            LogComment("5. Registers a callback to provide the Request Completion Interface to the client.");
            uint interfaceId = IdGenerator.NewId();
            rdpeusbAdapter.RegisterCallback(device, 1, interfaceId);

            LogComment("6. Sends TS_URB_GET_CURRENT_FRAME_NUMBER request.");
            const uint frameNumberSize = 0;
            uint requestId = IdGenerator.NewId();
            TS_URB_GET_CURRENT_FRAME_NUMBER req = new TS_URB_GET_CURRENT_FRAME_NUMBER(
                requestId,
                0);
            rdpeusbAdapter.TransferInRequest(device, req, frameNumberSize);

            LogComment("7. Receives TS_URB_GET_CURRENT_FRAME_NUMBER_RESULT in the  URB_COMPLETION_NO_DATA message.");
            // Waits for the result.
            EusbPdu pdu = rdpeusbAdapter.ExpectCompletion(device.VirtualChannel);
            Site.Assert.IsInstanceOfType(
                pdu,
                typeof(EusbUrbCompletionNoDataPdu),
                "The result must be type of EusbUrbCompletionNoDataPdu.");
            EusbUrbCompletionNoDataPdu pduRes = (EusbUrbCompletionNoDataPdu)pdu;
            Site.Assert.IsSuccess((int)pduRes.HResult, "The EusbUrbCompletionNoDataPdu must indicate successful.");
            ReqCapturer.VerifyUrbCompletionNoData(pduRes, req, true, interfaceId);
            TS_URB_GET_CURRENT_FRAME_NUMBER_RESULT res = new TS_URB_GET_CURRENT_FRAME_NUMBER_RESULT();
            Site.Assert.IsTrue(
                PduMarshaler.Unmarshal(pduRes.TsUrbResult, res),
                "The TS_URB_GET_CURRENT_FRAME_NUMBER_RESULT structure is sent via the URB_COMPLETION_NO_DATA message"
                );

            LogComment("The current frame number is {0}(0x{0:x4}).", res.FrameNumber);

            LogComment("8. Sends retract device request and the channel for the device is expected to be closed.");
            rdpeusbAdapter.RetractDevice(device, USB_RETRACT_REASON.UsbRetractReason_BlockedByPolicy);
        }