public void When_Missed_Both_Windows_Should_Resolve_Window_0(int delayInMs)
{
var target = new LoRaOperationTimeWatcher(RegionFactory.CreateEU868Region(), DateTimeOffset.UtcNow.Subtract(TimeSpan.FromMilliseconds(delayInMs)));
var loRaDevice = new LoRaDevice("31312", "312321321", null);
Assert.Equal(0, target.ResolveReceiveWindowToUse(loRaDevice));
}
public void After_One_Second_Join_First_Window_Should_Be_Greater_Than_3sec()
{
var target = new LoRaOperationTimeWatcher(RegionFactory.CreateEU868Region(), DateTimeOffset.UtcNow.Subtract(TimeSpan.FromSeconds(1)));
var actual = target.GetRemainingTimeToJoinAcceptFirstWindow();
Assert.InRange(actual.TotalMilliseconds, 3500, 5000);
}
public void After_5_Seconds_Join_First_Window_Should_Be_Negative()
{
var target = new LoRaOperationTimeWatcher(RegionFactory.CreateEU868Region(), DateTimeOffset.UtcNow.Subtract(TimeSpan.FromSeconds(5)));
var actual = target.GetRemainingTimeToJoinAcceptFirstWindow();
Assert.True(actual.TotalMilliseconds < 0, $"First window is over, value should be negative");
}
public void When_Out_Of_Time_For_Join_Accept_Second_Window_Should_Resolve_Window_0(int delayInMs)
{
var target = new LoRaOperationTimeWatcher(RegionFactory.CreateEU868Region(), DateTimeOffset.UtcNow.Subtract(TimeSpan.FromMilliseconds(delayInMs)));
var loRaDevice = new LoRaDevice("31312", "312321321", null);
Assert.Equal(0, target.ResolveJoinAcceptWindowToUse(loRaDevice));
}
public void When_Device_PreferredWindow1_In_Time_For_First_Window_Should_Get_Check_C2D_Avaible_Time_Correctly(int delayInMs, int expectedMinMs, int expectedMaxMs)
{
var target = new LoRaOperationTimeWatcher(RegionFactory.CreateEU868Region(), DateTimeOffset.UtcNow.Subtract(TimeSpan.FromMilliseconds(delayInMs)));
var loRaDevice = new LoRaDevice("1111", "2222", null);
// Will be around 1000 - delay - 400
Assert.InRange(target.GetAvailableTimeToCheckCloudToDeviceMessage(loRaDevice), TimeSpan.FromMilliseconds(expectedMinMs), TimeSpan.FromMilliseconds(expectedMaxMs));
}
public void When_In_Time_For_First_Window_But_Device_Preferes_Seconds_Should_Resolve_Window_2(int delayInMs)
{
var target = new LoRaOperationTimeWatcher(RegionFactory.CreateEU868Region(), DateTimeOffset.UtcNow.Subtract(TimeSpan.FromMilliseconds(delayInMs)));
var loRaDevice = new LoRaDevice("31312", "312321321", null)
{
PreferredWindow = 2,
};
Assert.Equal(2, target.ResolveReceiveWindowToUse(loRaDevice));
}
public void When_Device_Out_Of_Time_For_C2D_Receive_Should_Return_TimeSpan_Zero(int delayInMs, int devicePreferredReceiveWindow)
{
var target = new LoRaOperationTimeWatcher(RegionFactory.CreateEU868Region(), DateTimeOffset.UtcNow.Subtract(TimeSpan.FromMilliseconds(delayInMs)));
var loRaDevice = new LoRaDevice("1111", "2222", null)
{
PreferredWindow = devicePreferredReceiveWindow,
};
Assert.Equal(TimeSpan.Zero, target.GetAvailableTimeToCheckCloudToDeviceMessage(loRaDevice));
}
public void TestPhysicalMappingEU(
[CombinatorialValues("SF12BW125", "SF11BW125", "SF10BW125", "SF9BW125", "SF8BW125", "SF7BW125", "SF7BW250")] string datr,
[CombinatorialValues(868.1, 868.3, 868.5)] double freq)
{
List <Rxpk> rxpk = GenerateRxpk(datr, freq);
// in EU in standard parameters the expectation is that the reply arrive at same place.
var expFreq = freq;
var expDatr = datr;
Assert.Equal(RegionFactory.CreateEU868Region().GetDownstreamChannelFrequency(rxpk[0]), expFreq);
Assert.Equal(RegionFactory.CreateEU868Region().GetDownstreamDR(rxpk[0]), expDatr);
}
public void EnsureRegionLimitTestAreWorking(double freq, string datarate, LoRaRegion region)
{
var rxpk = GenerateRxpk(datarate, freq);
if (region == LoRaRegion.EU868)
{
Assert.Throws <RegionLimitException>(() =>
{
RegionFactory.CreateEU868Region().GetDownstreamChannelFrequency(rxpk[0]);
RegionFactory.CreateEU868Region().GetDownstreamDR(rxpk[0]);
});
}
if (region == LoRaRegion.US915)
{
Assert.Throws <RegionLimitException>(() =>
{
RegionFactory.CreateUS915Region().GetDownstreamChannelFrequency(rxpk[0]);
RegionFactory.CreateUS915Region().GetDownstreamDR(rxpk[0]);
});
}
}
public async Task OTAA_Join_Should_Use_Rchf_0(string deviceGatewayID, uint rfch)
{
var simulatedDevice = new SimulatedDevice(TestDeviceInfo.CreateOTAADevice(1, gatewayID: deviceGatewayID));
var joinRequest = simulatedDevice.CreateJoinRequest();
// Create Rxpk
var joinRxpk = joinRequest.SerializeUplink(simulatedDevice.LoRaDevice.AppKey).Rxpk[0];
joinRxpk.Rfch = rfch;
var devNonce = ConversionHelper.ByteArrayToString(joinRequest.DevNonce);
var devAddr = string.Empty;
var devEUI = simulatedDevice.LoRaDevice.DeviceID;
var appEUI = simulatedDevice.LoRaDevice.AppEUI;
var loRaDeviceClient = new Mock <ILoRaDeviceClient>(MockBehavior.Strict);
// Device twin will be queried
var twin = new Twin();
twin.Properties.Desired[TwinProperty.DevEUI] = devEUI;
twin.Properties.Desired[TwinProperty.AppEUI] = simulatedDevice.LoRaDevice.AppEUI;
twin.Properties.Desired[TwinProperty.AppKey] = simulatedDevice.LoRaDevice.AppKey;
twin.Properties.Desired[TwinProperty.GatewayID] = deviceGatewayID;
twin.Properties.Desired[TwinProperty.SensorDecoder] = simulatedDevice.LoRaDevice.SensorDecoder;
loRaDeviceClient.Setup(x => x.GetTwinAsync()).ReturnsAsync(twin);
// Device twin will be updated
loRaDeviceClient.Setup(x => x.UpdateReportedPropertiesAsync(It.IsNotNull <TwinCollection>()))
.ReturnsAsync(true);
// Lora device api will be search by devices with matching deveui,
var loRaDeviceApi = new Mock <LoRaDeviceAPIServiceBase>(MockBehavior.Strict);
loRaDeviceApi.Setup(x => x.SearchAndLockForJoinAsync(this.ServerConfiguration.GatewayID, devEUI, appEUI, devNonce))
.ReturnsAsync(new SearchDevicesResult(new IoTHubDeviceInfo(devAddr, devEUI, "aabb").AsList()));
// using factory to create mock of
var loRaDeviceFactory = new TestLoRaDeviceFactory(loRaDeviceClient.Object);
var memoryCache = new MemoryCache(new MemoryCacheOptions());
var deviceRegistry = new LoRaDeviceRegistry(this.ServerConfiguration, memoryCache, loRaDeviceApi.Object, loRaDeviceFactory);
var frameCounterUpdateStrategyFactory = new LoRaDeviceFrameCounterUpdateStrategyFactory(this.ServerConfiguration.GatewayID, loRaDeviceApi.Object);
// Send to message processor
var messageProcessor = new MessageProcessor(
this.ServerConfiguration,
deviceRegistry,
frameCounterUpdateStrategyFactory,
new LoRaPayloadDecoder());
var downlinkJoinAcceptMessage = await messageProcessor.ProcessMessageAsync(joinRxpk);
Assert.NotNull(downlinkJoinAcceptMessage);
// validates txpk according to eu region
Assert.Equal(0U, downlinkJoinAcceptMessage.Txpk.Rfch);
Assert.Equal(RegionFactory.CreateEU868Region().GetDownstreamChannelFrequency(joinRxpk), downlinkJoinAcceptMessage.Txpk.Freq);
Assert.Equal("4/5", downlinkJoinAcceptMessage.Txpk.Codr);
Assert.False(downlinkJoinAcceptMessage.Txpk.Imme);
Assert.True(downlinkJoinAcceptMessage.Txpk.Ipol);
Assert.Equal("LORA", downlinkJoinAcceptMessage.Txpk.Modu);
loRaDeviceClient.VerifyAll();
loRaDeviceApi.VerifyAll();
}
public async Task Join_And_Send_Unconfirmed_And_Confirmed_Messages(string deviceGatewayID, int initialFcntUp, int initialFcntDown, int startingPayloadFcnt, uint netId)
{
var simulatedDevice = new SimulatedDevice(TestDeviceInfo.CreateOTAADevice(1, gatewayID: deviceGatewayID));
var joinRequest = simulatedDevice.CreateJoinRequest();
// Create Rxpk
var joinRxpk = joinRequest.SerializeUplink(simulatedDevice.LoRaDevice.AppKey).Rxpk[0];
var devNonce = LoRaTools.Utils.ConversionHelper.ByteArrayToString(joinRequest.DevNonce);
var devAddr = string.Empty;
var devEUI = simulatedDevice.LoRaDevice.DeviceID;
var appEUI = simulatedDevice.LoRaDevice.AppEUI;
var loRaDeviceClient = new Mock <ILoRaDeviceClient>(MockBehavior.Strict);
this.ServerConfiguration.NetId = netId;
// Device twin will be queried
var twin = new Twin();
twin.Properties.Desired[TwinProperty.DevEUI] = devEUI;
twin.Properties.Desired[TwinProperty.AppEUI] = simulatedDevice.LoRaDevice.AppEUI;
twin.Properties.Desired[TwinProperty.AppKey] = simulatedDevice.LoRaDevice.AppKey;
twin.Properties.Desired[TwinProperty.GatewayID] = deviceGatewayID;
twin.Properties.Desired[TwinProperty.SensorDecoder] = simulatedDevice.LoRaDevice.SensorDecoder;
twin.Properties.Reported[TwinProperty.FCntUp] = initialFcntUp;
twin.Properties.Reported[TwinProperty.FCntDown] = initialFcntDown;
loRaDeviceClient.Setup(x => x.GetTwinAsync()).ReturnsAsync(twin);
// Device twin will be updated
string afterJoinAppSKey = null;
string afterJoinNwkSKey = null;
string afterJoinDevAddr = null;
int afterJoinFcntDown = -1;
int afterJoinFcntUp = -1;
loRaDeviceClient.Setup(x => x.UpdateReportedPropertiesAsync(It.IsNotNull <TwinCollection>()))
.Callback <TwinCollection>((updatedTwin) =>
{
afterJoinAppSKey = updatedTwin[TwinProperty.AppSKey];
afterJoinNwkSKey = updatedTwin[TwinProperty.NwkSKey];
afterJoinDevAddr = updatedTwin[TwinProperty.DevAddr];
afterJoinFcntDown = updatedTwin[TwinProperty.FCntDown];
afterJoinFcntUp = updatedTwin[TwinProperty.FCntUp];
})
.ReturnsAsync(true);
// message will be sent
var sentTelemetry = new List <LoRaDeviceTelemetry>();
loRaDeviceClient.Setup(x => x.SendEventAsync(It.IsNotNull <LoRaDeviceTelemetry>(), null))
.Callback <LoRaDeviceTelemetry, Dictionary <string, string> >((t, _) => sentTelemetry.Add(t))
.ReturnsAsync(true);
// C2D message will be checked
loRaDeviceClient.Setup(x => x.ReceiveAsync(It.IsNotNull <TimeSpan>()))
.ReturnsAsync((Message)null);
// Lora device api will be search by devices with matching deveui,
var loRaDeviceApi = new Mock <LoRaDeviceAPIServiceBase>(MockBehavior.Strict);
loRaDeviceApi.Setup(x => x.SearchAndLockForJoinAsync(this.ServerConfiguration.GatewayID, devEUI, appEUI, devNonce))
.ReturnsAsync(new SearchDevicesResult(new IoTHubDeviceInfo(devAddr, devEUI, "aabb").AsList()));
// multi gateway will request a next frame count down from the lora device api, prepare it
if (string.IsNullOrEmpty(deviceGatewayID))
{
loRaDeviceApi.Setup(x => x.NextFCntDownAsync(devEUI, 0, startingPayloadFcnt + 1, this.ServerConfiguration.GatewayID))
.ReturnsAsync((ushort)1);
}
// using factory to create mock of
var loRaDeviceFactory = new TestLoRaDeviceFactory(loRaDeviceClient.Object);
var memoryCache = new MemoryCache(new MemoryCacheOptions());
var deviceRegistry = new LoRaDeviceRegistry(this.ServerConfiguration, memoryCache, loRaDeviceApi.Object, loRaDeviceFactory);
var frameCounterUpdateStrategyFactory = new LoRaDeviceFrameCounterUpdateStrategyFactory(this.ServerConfiguration.GatewayID, loRaDeviceApi.Object);
// Send to message processor
var messageProcessor = new MessageProcessor(
this.ServerConfiguration,
deviceRegistry,
frameCounterUpdateStrategyFactory,
new LoRaPayloadDecoder());
var downlinkJoinAcceptMessage = await messageProcessor.ProcessMessageAsync(joinRxpk);
Assert.NotNull(downlinkJoinAcceptMessage);
var joinAccept = new LoRaPayloadJoinAccept(Convert.FromBase64String(downlinkJoinAcceptMessage.Txpk.Data), simulatedDevice.LoRaDevice.AppKey);
Assert.Equal(joinAccept.DevAddr.ToArray(), ConversionHelper.StringToByteArray(afterJoinDevAddr));
// check that the device is in cache
var devicesForDevAddr = deviceRegistry.InternalGetCachedDevicesForDevAddr(afterJoinDevAddr);
Assert.Single(devicesForDevAddr); // should have the single device
Assert.True(devicesForDevAddr.TryGetValue(devEUI, out var loRaDevice));
Assert.Equal(afterJoinAppSKey, loRaDevice.AppSKey);
Assert.Equal(afterJoinNwkSKey, loRaDevice.NwkSKey);
Assert.Equal(afterJoinDevAddr, loRaDevice.DevAddr);
var netIdBytes = BitConverter.GetBytes(netId);
Assert.Equal((uint)(netIdBytes[0] & 0b01111111), NetIdHelper.GetNwkIdPart(afterJoinDevAddr));
if (deviceGatewayID == null)
{
Assert.Null(loRaDevice.GatewayID);
}
else
{
Assert.Equal(deviceGatewayID, loRaDevice.GatewayID);
}
// fcnt is restarted
Assert.Equal(0, afterJoinFcntDown);
Assert.Equal(0, afterJoinFcntUp);
Assert.Equal(0, loRaDevice.FCntUp);
Assert.Equal(0, loRaDevice.FCntDown);
Assert.False(loRaDevice.HasFrameCountChanges);
simulatedDevice.LoRaDevice.AppSKey = afterJoinAppSKey;
simulatedDevice.LoRaDevice.NwkSKey = afterJoinNwkSKey;
simulatedDevice.LoRaDevice.DevAddr = afterJoinDevAddr;
// sends unconfirmed message
var unconfirmedMessagePayload = simulatedDevice.CreateUnconfirmedDataUpMessage("100", fcnt: startingPayloadFcnt);
var unconfirmedMessageResult = await messageProcessor.ProcessMessageAsync(unconfirmedMessagePayload.SerializeUplink(simulatedDevice.AppSKey, simulatedDevice.NwkSKey).Rxpk[0]);
Assert.Null(unconfirmedMessageResult);
// fcnt up was updated
Assert.Equal(startingPayloadFcnt, loRaDevice.FCntUp);
Assert.Equal(0, loRaDevice.FCntDown);
if (startingPayloadFcnt != 0)
{
// Frame change flag will be set, only saving every 10 messages
Assert.True(loRaDevice.HasFrameCountChanges);
}
Assert.Single(sentTelemetry);
// sends confirmed message
var confirmedMessagePayload = simulatedDevice.CreateConfirmedDataUpMessage("200", fcnt: startingPayloadFcnt + 1);
var confirmedMessageRxpk = confirmedMessagePayload.SerializeUplink(simulatedDevice.AppSKey, simulatedDevice.NwkSKey).Rxpk[0];
var confirmedMessage = await messageProcessor.ProcessMessageAsync(confirmedMessageRxpk);
Assert.NotNull(confirmedMessage);
Assert.NotNull(confirmedMessage.Txpk);
Assert.Equal(2, sentTelemetry.Count);
// validates txpk according to eu region
Assert.Equal(RegionFactory.CreateEU868Region().GetDownstreamChannelFrequency(confirmedMessageRxpk), confirmedMessage.Txpk.Freq);
Assert.Equal("4/5", confirmedMessage.Txpk.Codr);
Assert.False(confirmedMessage.Txpk.Imme);
Assert.True(confirmedMessage.Txpk.Ipol);
Assert.Equal("LORA", confirmedMessage.Txpk.Modu);
// fcnt up was updated
Assert.Equal(startingPayloadFcnt + 1, loRaDevice.FCntUp);
Assert.Equal(1, loRaDevice.FCntDown);
// Frame change flag will be set, only saving every 10 messages
Assert.True(loRaDevice.HasFrameCountChanges);
// C2D message will be checked twice
loRaDeviceClient.Verify(x => x.ReceiveAsync(It.IsNotNull <TimeSpan>()), Times.Exactly(2));
// has telemetry with both fcnt
Assert.Single(sentTelemetry, (t) => t.Fcnt == startingPayloadFcnt);
Assert.Single(sentTelemetry, (t) => t.Fcnt == (startingPayloadFcnt + 1));
loRaDeviceClient.VerifyAll();
loRaDeviceApi.VerifyAll();
}
public async Task When_Device_Checks_For_C2D_Message_Uses_Available_Time(
int preferredWindow,
int sendEventDurationInMs,
int checkMinDuration,
int checkMaxDuration,
int expectedRX)
{
const int PayloadFcnt = 10;
const int InitialDeviceFcntUp = 9;
const int InitialDeviceFcntDown = 20;
var simulatedDevice = new SimulatedDevice(
TestDeviceInfo.CreateABPDevice(1, gatewayID: this.ServerConfiguration.GatewayID),
frmCntUp: InitialDeviceFcntUp,
frmCntDown: InitialDeviceFcntDown);
var devAddr = simulatedDevice.DevAddr;
var devEUI = simulatedDevice.DevEUI;
var loraDeviceClient = new Mock <ILoRaDeviceClient>(MockBehavior.Strict);
var sentEventAsyncSetup = loraDeviceClient.Setup(x => x.SendEventAsync(It.IsNotNull <LoRaDeviceTelemetry>(), null));
sentEventAsyncSetup.Returns(() =>
{
if (sendEventDurationInMs > 0)
{
var task = Task.Delay(sendEventDurationInMs).ContinueWith <bool>((_) => true);
task.ConfigureAwait(false);
return(task);
}
return(Task.FromResult(true));
});
var cloudToDeviceMessage = new Message(Encoding.UTF8.GetBytes("c2d"));
cloudToDeviceMessage.Properties[MessageProcessor.FPORT_MSG_PROPERTY_KEY] = "1";
loraDeviceClient.Setup(x => x.ReceiveAsync(It.IsInRange <TimeSpan>(TimeSpan.FromMilliseconds(checkMinDuration), TimeSpan.FromMilliseconds(checkMaxDuration), Range.Inclusive)))
.ReturnsAsync(cloudToDeviceMessage);
loraDeviceClient.Setup(x => x.ReceiveAsync(LoRaOperationTimeWatcher.MinimumAvailableTimeToCheckForCloudMessage))
.Returns(this.EmptyAdditionalMessageReceiveAsync); // 2nd cloud to device message does not return anything
loraDeviceClient.Setup(x => x.CompleteAsync(cloudToDeviceMessage))
.ReturnsAsync(true);
var loRaDeviceAPI = new Mock <LoRaDeviceAPIServiceBase>();
var loRaDevice = TestUtils.CreateFromSimulatedDevice(simulatedDevice, loraDeviceClient.Object);
loRaDevice.PreferredWindow = preferredWindow;
this.LoRaDeviceRegistry.Setup(x => x.GetDeviceForPayloadAsync(It.IsNotNull <LoRaPayloadData>()))
.ReturnsAsync(loRaDevice);
var loRaDeviceRegistry = new LoRaDeviceRegistry(this.ServerConfiguration, new MemoryCache(new MemoryCacheOptions()), loRaDeviceAPI.Object, new TestLoRaDeviceFactory(loraDeviceClient.Object));
// Send to message processor
var messageProcessor = new MessageProcessor(
this.ServerConfiguration,
this.LoRaDeviceRegistry.Object,
new LoRaDeviceFrameCounterUpdateStrategyFactory(this.ServerConfiguration.GatewayID, loRaDeviceAPI.Object),
new LoRaPayloadDecoder());
var payload = simulatedDevice.CreateUnconfirmedDataUpMessage("1234", fcnt: PayloadFcnt);
var rxpk = payload.SerializeUplink(simulatedDevice.AppSKey, simulatedDevice.NwkSKey).Rxpk[0];
var actualDownlink = await messageProcessor.ProcessMessageAsync(rxpk);
Assert.NotNull(actualDownlink);
loraDeviceClient.VerifyAll();
this.LoRaDeviceRegistry.VerifyAll();
var euRegion = RegionFactory.CreateEU868Region();
if (expectedRX == 1)
{
// ensure response is for RX1
Assert.Equal(rxpk.Tmst + 1000000, actualDownlink.Txpk.Tmst);
}
else
{
// ensure response is for RX2
Assert.Equal(rxpk.Tmst + 2000000, actualDownlink.Txpk.Tmst);
}
}
public async Task When_Device_Prefers_Second_Window_Should_Send_Downstream_In_Second_Window()
{
const int PayloadFcnt = 10;
const int InitialDeviceFcntUp = 9;
const int InitialDeviceFcntDown = 20;
var simulatedDevice = new SimulatedDevice(
TestDeviceInfo.CreateABPDevice(1, gatewayID: this.ServerConfiguration.GatewayID),
frmCntUp: InitialDeviceFcntUp,
frmCntDown: InitialDeviceFcntDown);
var devAddr = simulatedDevice.DevAddr;
var devEUI = simulatedDevice.DevEUI;
var loraDeviceClient = new Mock <ILoRaDeviceClient>(MockBehavior.Strict);
// Will get twin to initialize LoRaDevice
var deviceTwin = TestUtils.CreateABPTwin(
simulatedDevice,
desiredProperties: new Dictionary <string, object>
{
{ TwinProperty.PreferredWindow, 2 }
});
loraDeviceClient.Setup(x => x.GetTwinAsync()).ReturnsAsync(deviceTwin);
loraDeviceClient.Setup(x => x.SendEventAsync(It.IsNotNull <LoRaDeviceTelemetry>(), null))
.ReturnsAsync(true);
loraDeviceClient.Setup(x => x.UpdateReportedPropertiesAsync(It.IsNotNull <TwinCollection>()))
.ReturnsAsync(true);
var cloudToDeviceMessage = new Message(Encoding.UTF8.GetBytes("c2d"));
cloudToDeviceMessage.Properties[MessageProcessor.FPORT_MSG_PROPERTY_KEY] = "1";
loraDeviceClient.SetupSequence(x => x.ReceiveAsync(It.IsAny <TimeSpan>()))
.ReturnsAsync(cloudToDeviceMessage)
.Returns(this.EmptyAdditionalMessageReceiveAsync); // 2nd cloud to device message does not return anything
loraDeviceClient.Setup(x => x.CompleteAsync(cloudToDeviceMessage))
.ReturnsAsync(true);
var payloadDecoder = new Mock <ILoRaPayloadDecoder>();
var loRaDeviceAPI = new Mock <LoRaDeviceAPIServiceBase>();
loRaDeviceAPI.Setup(x => x.SearchByDevAddrAsync(devAddr))
.ReturnsAsync(new SearchDevicesResult(new IoTHubDeviceInfo(devAddr, devEUI, "adad").AsList()));
var loRaDeviceRegistry = new LoRaDeviceRegistry(this.ServerConfiguration, new MemoryCache(new MemoryCacheOptions()), loRaDeviceAPI.Object, new TestLoRaDeviceFactory(loraDeviceClient.Object));
// Send to message processor
var messageProcessor = new MessageProcessor(
this.ServerConfiguration,
loRaDeviceRegistry,
new LoRaDeviceFrameCounterUpdateStrategyFactory(this.ServerConfiguration.GatewayID, loRaDeviceAPI.Object),
new LoRaPayloadDecoder());
var payload = simulatedDevice.CreateUnconfirmedDataUpMessage("1234", fcnt: PayloadFcnt);
var rxpk = payload.SerializeUplink(simulatedDevice.AppSKey, simulatedDevice.NwkSKey).Rxpk[0];
var actual = await messageProcessor.ProcessMessageAsync(rxpk);
// Expectations
// 1. Message was sent to IoT Hub
loraDeviceClient.VerifyAll();
// 2. Single gateway frame counter strategy was used
this.FrameCounterUpdateStrategyFactory.VerifyAll();
// 3. Return is downstream message
Assert.NotNull(actual);
Assert.IsType <DownlinkPktFwdMessage>(actual);
var downlinkMessage = (DownlinkPktFwdMessage)actual;
var euRegion = RegionFactory.CreateEU868Region();
// Ensure we are using second window frequency
Assert.Equal(euRegion.RX2DefaultReceiveWindows.frequency, actual.Txpk.Freq);
// Ensure we are using second window datr
Assert.Equal(euRegion.DRtoConfiguration[euRegion.RX2DefaultReceiveWindows.dr].configuration, actual.Txpk.Datr);
// Ensure tmst was computed to 2 seconds (2 windows in Europe)
Assert.Equal(2000000, actual.Txpk.Tmst);
// Get the device from registry
var deviceDictionary = loRaDeviceRegistry.InternalGetCachedDevicesForDevAddr(devAddr);
Assert.True(deviceDictionary.TryGetValue(simulatedDevice.DevEUI, out var loRaDevice));
var payloadDataDown = new LoRaPayloadData(Convert.FromBase64String(downlinkMessage.Txpk.Data));
payloadDataDown.PerformEncryption(loRaDevice.AppSKey);
Assert.Equal(payloadDataDown.DevAddr.ToArray(), ConversionHelper.StringToByteArray(loRaDevice.DevAddr));
Assert.False(payloadDataDown.IsConfirmed());
Assert.Equal(LoRaMessageType.UnconfirmedDataDown, payloadDataDown.LoRaMessageType);
// 4. Frame counter up was updated
Assert.Equal(PayloadFcnt, loRaDevice.FCntUp);
// 5. Frame counter down is updated
var expectedFcntDown = InitialDeviceFcntDown + 10 + 1; // adding 10 as buffer when creating a new device instance
Assert.Equal(expectedFcntDown, loRaDevice.FCntDown);
Assert.Equal(expectedFcntDown, payloadDataDown.GetFcnt());
// 6. Frame count has no pending changes
Assert.False(loRaDevice.HasFrameCountChanges);
}
public void After_6_Seconds_Should_Not_Be_In_Time_For_Join()
{
var target = new LoRaOperationTimeWatcher(RegionFactory.CreateEU868Region(), DateTimeOffset.UtcNow.Subtract(TimeSpan.FromSeconds(6)));
Assert.False(target.InTimeForJoinAccept());
}
