// Creates a new instance of NetworkServerConfiguration by reading values from environment variables
public static NetworkServerConfiguration CreateFromEnvironmentVariables()
{
var config = new NetworkServerConfiguration();
// Create case insensitive dictionary from environment variables
var envVars = new CaseInsensitiveEnvironmentVariables(Environment.GetEnvironmentVariables());
config.RunningAsIoTEdgeModule = !string.IsNullOrEmpty(envVars.GetEnvVar("IOTEDGE_APIVERSION", string.Empty));
config.IoTHubHostName = envVars.GetEnvVar("IOTEDGE_IOTHUBHOSTNAME", string.Empty);
config.GatewayHostName = envVars.GetEnvVar("IOTEDGE_GATEWAYHOSTNAME", string.Empty);
config.EnableGateway = envVars.GetEnvVar("ENABLE_GATEWAY", config.EnableGateway);
config.GatewayID = envVars.GetEnvVar("IOTEDGE_DEVICEID", string.Empty);
config.HttpsProxy = envVars.GetEnvVar("HTTPS_PROXY", string.Empty);
config.Rx2DataRate = envVars.GetEnvVar("RX2_DATR", -1) is var datrNum && (DataRateIndex)datrNum is var datr && Enum.IsDefined(datr) ? datr : null;
config.Rx2Frequency = envVars.GetEnvVar("RX2_FREQ") is { } someFreq?Hertz.Mega(someFreq) : null;
config.IoTEdgeTimeout = envVars.GetEnvVar("IOTEDGE_TIMEOUT", config.IoTEdgeTimeout);
// facadeurl is allowed to be null as the value is coming from the twin in production.
var facadeUrl = envVars.GetEnvVar("FACADE_SERVER_URL", string.Empty);
config.FacadeServerUrl = string.IsNullOrEmpty(facadeUrl) ? null : new Uri(envVars.GetEnvVar("FACADE_SERVER_URL", string.Empty));
config.FacadeAuthCode = envVars.GetEnvVar("FACADE_AUTH_CODE", string.Empty);
config.LogLevel = envVars.GetEnvVar("LOG_LEVEL", config.LogLevel);
config.LogToConsole = envVars.GetEnvVar("LOG_TO_CONSOLE", config.LogToConsole);
config.LogToTcp = envVars.GetEnvVar("LOG_TO_TCP", config.LogToTcp);
config.LogToHub = envVars.GetEnvVar("LOG_TO_HUB", config.LogToHub);
config.LogToTcpAddress = envVars.GetEnvVar("LOG_TO_TCP_ADDRESS", string.Empty);
config.LogToTcpPort = envVars.GetEnvVar("LOG_TO_TCP_PORT", config.LogToTcpPort);
config.NetId = new NetId(envVars.GetEnvVar("NETID", config.NetId.NetworkId));
config.AllowedDevAddresses = envVars.GetEnvVar("AllowedDevAddresses", string.Empty)
.Split(";")
.Select(s => DevAddr.TryParse(s, out var devAddr) ? (true, Value: devAddr) : default)
public static RadioMetadata GenerateTestRadioMetadata(
DataRateIndex dataRate = DataRateIndex.DR2,
Hertz?frequency = null,
uint antennaPreference = 1,
ulong xtime = 100000,
uint gpstime = 100000,
double rssi = 2.0,
float snr = 0.1f) =>
new RadioMetadata(dataRate, frequency ?? Hertz.Mega(868.3),
new RadioMetadataUpInfo(antennaPreference, xtime, gpstime, rssi, snr));
public async Task When_Has_Custom_RX2DR_Should_Send_Correctly()
{
var devAddr = new DevAddr(0x023637F8);
var appSKey = TestKeys.CreateAppSessionKey(0xABC0200000000000, 0x09);
var nwkSKey = TestKeys.CreateNetworkSessionKey(0xABC0200000000000, 0x09);
var simDevice = new SimulatedDevice(TestDeviceInfo.CreateOTAADevice(1, deviceClassType: 'c', gatewayID: ServerGatewayID));
var devEUI = simDevice.DevEUI;
simDevice.SetupJoin(appSKey, nwkSKey, devAddr);
this.deviceApi.Setup(x => x.GetPrimaryKeyByEuiAsync(devEUI))
.ReturnsAsync("123");
var twin = simDevice.CreateOTAATwin(
desiredProperties: new Dictionary <string, object>
{
{ TwinProperty.RX2DataRate, "10" }
},
reportedProperties: new Dictionary <string, object>
{
{ TwinProperty.RX2DataRate, 10 },
{ TwinProperty.Region, LoRaRegionType.US915.ToString() },
// OTAA device, already joined
{ TwinProperty.DevAddr, devAddr.ToString() },
{ TwinProperty.AppSKey, appSKey.ToString() },
{ TwinProperty.NwkSKey, nwkSKey.ToString() },
{ TwinProperty.LastProcessingStationEui, new StationEui(ulong.MaxValue).ToString() }
});
this.deviceClient.Setup(x => x.GetTwinAsync(CancellationToken.None))
.ReturnsAsync(twin);
var c2dToDeviceMessage = new ReceivedLoRaCloudToDeviceMessage()
{
Payload = "hello",
DevEUI = devEUI,
Fport = TestPort,
MessageId = Guid.NewGuid().ToString(),
};
DownlinkMessage receivedDownlinkMessage = null;
this.downstreamMessageSender.Setup(x => x.SendDownstreamAsync(It.IsNotNull <DownlinkMessage>()))
.Returns(Task.CompletedTask)
.Callback <DownlinkMessage>(d => receivedDownlinkMessage = d);
var target = new DefaultClassCDevicesMessageSender(
this.serverConfiguration,
this.loRaDeviceRegistry,
this.downstreamMessageSender.Object,
this.frameCounterStrategyProvider,
NullLogger <DefaultClassCDevicesMessageSender> .Instance,
TestMeter.Instance);
Assert.True(await target.SendAsync(c2dToDeviceMessage));
this.downstreamMessageSender.Verify(x => x.SendDownstreamAsync(It.IsNotNull <DownlinkMessage>()), Times.Once());
EnsureDownlinkIsCorrect(receivedDownlinkMessage, simDevice, c2dToDeviceMessage);
Assert.Equal(DataRateIndex.DR10, receivedDownlinkMessage.Rx2.DataRate);
Assert.Equal(Hertz.Mega(923.3), receivedDownlinkMessage.Rx2.Frequency);
this.downstreamMessageSender.VerifyAll();
this.deviceApi.VerifyAll();
this.deviceClient.VerifyAll();
}
private async Task <uint> SendMessage(float currentLsnr, LoRaDataRate currentDR, uint payloadFcnt, SimulatedDevice simulatedDevice, MessageDispatcher messageProcessor, FrameControlFlags fctrl)
{
var payloadInt = simulatedDevice.CreateUnconfirmedDataUpMessage("1234", fcnt: payloadFcnt, fctrlFlags: fctrl);
using var requestInt = CreateWaitableRequest(new RadioMetadata(TestUtils.TestRegion.GetDataRateIndex(currentDR), Hertz.Mega(868.1), new RadioMetadataUpInfo(0, 0, 0, 0, currentLsnr)), payloadInt);
messageProcessor.DispatchRequest(requestInt);
Assert.True(await requestInt.WaitCompleteAsync(-1));
payloadFcnt++;
return(payloadFcnt);
}
public async Task Perform_NbRep_Adaptation_When_Needed()
{
uint deviceId = 31;
var currentDR = LoRaDataRate.SF8BW125;
var currentLsnr = -20;
var messageCount = 20;
uint payloadFcnt = 0;
const uint InitialDeviceFcntUp = 1;
const uint ExpectedDeviceFcntDown = 4;
var simulatedDevice = new SimulatedDevice(
TestDeviceInfo.CreateABPDevice(deviceId, gatewayID: ServerConfiguration.GatewayID),
frmCntUp: InitialDeviceFcntUp);
var loraDevice = CreateLoRaDevice(simulatedDevice);
LoRaDeviceClient.Setup(x => x.SendEventAsync(It.IsNotNull <LoRaDeviceTelemetry>(), null))
.ReturnsAsync(true);
LoRaDeviceClient.Setup(x => x.ReceiveAsync(It.IsNotNull <TimeSpan>()))
.ReturnsAsync((Message)null);
var reportedNbRep = 0;
LoRaDeviceClient.Setup(x => x.UpdateReportedPropertiesAsync(It.IsNotNull <TwinCollection>(), It.IsAny <CancellationToken>()))
.Callback <TwinCollection, CancellationToken>((t, _) =>
{
if (t.Contains(TwinProperty.NbRep))
{
reportedNbRep = (int)t[TwinProperty.NbRep];
}
})
.ReturnsAsync(true);
using var cache = EmptyMemoryCache();
using var loraDeviceCache = CreateDeviceCache(loraDevice);
using var deviceRegistry = new LoRaDeviceRegistry(ServerConfiguration, cache, LoRaDeviceApi.Object, LoRaDeviceFactory, loraDeviceCache);
// Send to message processor
using var messageProcessor = new MessageDispatcher(
ServerConfiguration,
deviceRegistry,
FrameCounterUpdateStrategyProvider);
payloadFcnt = await InitializeCacheToDefaultValuesAsync(payloadFcnt, simulatedDevice, messageProcessor);
// ****************************************************
// First part send messages with spaces in fcnt to simulate wrong network connectivity
// ****************************************************
// send a message with a fcnt every 4.
for (var i = 0; i < messageCount; i++)
{
payloadFcnt = await SendMessage(currentLsnr, currentDR, payloadFcnt + 3, simulatedDevice, messageProcessor, FrameControlFlags.Adr);
}
var payload = simulatedDevice.CreateUnconfirmedDataUpMessage("1234", fcnt: payloadFcnt, fctrlFlags: FrameControlFlags.AdrAckReq | FrameControlFlags.Adr);
var radioMetadata = new RadioMetadata(TestUtils.TestRegion.GetDataRateIndex(currentDR), Hertz.Mega(868.1), new RadioMetadataUpInfo(0, 0, 0, 0, currentLsnr));
using var request = CreateWaitableRequest(radioMetadata, payload);
messageProcessor.DispatchRequest(request);
Assert.True(await request.WaitCompleteAsync());
// Expectations
// 1. Message was sent to IoT Hub
LoRaDeviceClient.VerifyAll();
LoRaDeviceApi.VerifyAll();
Assert.True(request.ProcessingSucceeded);
Assert.NotNull(request.ResponseDownlink);
Assert.Equal(2, DownstreamMessageSender.DownlinkMessages.Count);
var downlinkMessage = DownstreamMessageSender.DownlinkMessages[1];
var payloadDataDown = new LoRaPayloadData(downlinkMessage.Data);
// We expect a mac command in the payload
Assert.Equal(5, payloadDataDown.Frmpayload.Span.Length);
var decryptedPayload = payloadDataDown.Serialize(simulatedDevice.NwkSKey.Value);
Assert.Equal(FramePort.MacCommand, payloadDataDown.Fport);
Assert.Equal((byte)Cid.LinkADRCmd, decryptedPayload[0]);
var linkAdr = new LinkADRRequest(decryptedPayload);
Assert.Equal(3, reportedNbRep);
Assert.Equal(3, linkAdr.NbRep);
Assert.Equal(3, loraDevice.NbRep);
// ****************************************************
// Second part send normal messages to decrease NbRep
// ****************************************************
// send a message with a fcnt every 1
for (var i = 0; i < messageCount; i++)
{
payloadFcnt = await SendMessage(currentLsnr, currentDR, payloadFcnt, simulatedDevice, messageProcessor, FrameControlFlags.Adr);
}
payload = simulatedDevice.CreateUnconfirmedDataUpMessage("1234", fcnt: payloadFcnt, fctrlFlags: FrameControlFlags.AdrAckReq | FrameControlFlags.Adr);
using var secondRequest = CreateWaitableRequest(radioMetadata, payload);
messageProcessor.DispatchRequest(secondRequest);
Assert.True(await secondRequest.WaitCompleteAsync());
// Expectations
// 1. Message was sent to IoT Hub
LoRaDeviceClient.VerifyAll();
LoRaDeviceApi.VerifyAll();
Assert.True(secondRequest.ProcessingSucceeded);
Assert.NotNull(secondRequest.ResponseDownlink);
Assert.Equal(3, DownstreamMessageSender.DownlinkMessages.Count);
downlinkMessage = DownstreamMessageSender.DownlinkMessages[2];
payloadDataDown = new LoRaPayloadData(downlinkMessage.Data);
// We expect a mac command in the payload
Assert.Equal(5, payloadDataDown.Frmpayload.Span.Length);
decryptedPayload = payloadDataDown.Serialize(simulatedDevice.NwkSKey.Value);
Assert.Equal(FramePort.MacCommand, payloadDataDown.Fport);
Assert.Equal((byte)Cid.LinkADRCmd, decryptedPayload[0]);
linkAdr = new LinkADRRequest(decryptedPayload);
Assert.Equal(2, reportedNbRep);
Assert.Equal(2, linkAdr.NbRep);
Assert.Equal(2, loraDevice.NbRep);
// in case no payload the mac is in the FRMPayload and is decrypted with NwkSKey
Assert.Equal(payloadDataDown.DevAddr, loraDevice.DevAddr);
Assert.False(payloadDataDown.IsConfirmed);
Assert.Equal(MacMessageType.UnconfirmedDataDown, payloadDataDown.MessageType);
// 4. Frame counter up was updated
Assert.Equal(payloadFcnt, loraDevice.FCntUp);
// ****************************************************
// Third part send normal messages to decrease NbRep to 1
// ****************************************************
// send a message with a fcnt every 1
for (var i = 0; i < messageCount; i++)
{
payloadFcnt = await SendMessage(currentLsnr, currentDR, payloadFcnt, simulatedDevice, messageProcessor, FrameControlFlags.Adr);
}
payload = simulatedDevice.CreateUnconfirmedDataUpMessage("1234", fcnt: payloadFcnt, fctrlFlags: FrameControlFlags.AdrAckReq | FrameControlFlags.Adr);
using var thirdRequest = CreateWaitableRequest(radioMetadata, payload);
messageProcessor.DispatchRequest(thirdRequest);
Assert.True(await thirdRequest.WaitCompleteAsync());
// Expectations
// 1. Message was sent to IoT Hub
LoRaDeviceClient.VerifyAll();
LoRaDeviceApi.VerifyAll();
Assert.True(thirdRequest.ProcessingSucceeded);
Assert.NotNull(thirdRequest.ResponseDownlink);
Assert.Equal(4, DownstreamMessageSender.DownlinkMessages.Count);
downlinkMessage = DownstreamMessageSender.DownlinkMessages[3];
payloadDataDown = new LoRaPayloadData(downlinkMessage.Data);
// We expect a mac command in the payload
Assert.Equal(5, payloadDataDown.Frmpayload.Span.Length);
decryptedPayload = payloadDataDown.Serialize(simulatedDevice.NwkSKey.Value);
Assert.Equal(FramePort.MacCommand, payloadDataDown.Fport);
Assert.Equal((byte)Cid.LinkADRCmd, decryptedPayload[0]);
linkAdr = new LinkADRRequest(decryptedPayload);
Assert.Equal(1, reportedNbRep);
Assert.Equal(1, linkAdr.NbRep);
Assert.Equal(1, loraDevice.NbRep);
// 5. Frame counter down is updated
Assert.Equal(ExpectedDeviceFcntDown, loraDevice.FCntDown);
Assert.Equal(ExpectedDeviceFcntDown, payloadDataDown.Fcnt);
}
public async Task Perform_TXPower_Adaptation_When_Needed()
{
uint deviceId = 44;
var messageCount = 21;
uint payloadFcnt = 0;
const uint InitialDeviceFcntUp = 9;
const uint InitialDeviceFcntDown = 0;
var simulatedDevice = new SimulatedDevice(
TestDeviceInfo.CreateABPDevice(deviceId, gatewayID: ServerConfiguration.GatewayID),
frmCntUp: InitialDeviceFcntUp);
var loraDevice = CreateLoRaDevice(simulatedDevice);
LoRaDeviceClient.Setup(x => x.SendEventAsync(It.IsNotNull <LoRaDeviceTelemetry>(), null))
.ReturnsAsync(true);
LoRaDeviceClient.Setup(x => x.ReceiveAsync(It.IsNotNull <TimeSpan>()))
.ReturnsAsync((Message)null);
var reportedDR = DR0;
var reportedTxPower = 0;
LoRaDeviceClient.Setup(x => x.UpdateReportedPropertiesAsync(It.IsNotNull <TwinCollection>(), It.IsAny <CancellationToken>()))
.Callback <TwinCollection, CancellationToken>((t, _) =>
{
if (t.Contains(TwinProperty.DataRate))
{
reportedDR = (DataRateIndex)(int)(object)t[TwinProperty.DataRate].Value;
}
if (t.Contains(TwinProperty.TxPower))
{
reportedTxPower = t[TwinProperty.TxPower].Value;
}
})
.ReturnsAsync(true);
using var cache = EmptyMemoryCache();
using var loraDeviceCache = CreateDeviceCache(loraDevice);
using var deviceRegistry = new LoRaDeviceRegistry(ServerConfiguration, cache, LoRaDeviceApi.Object, LoRaDeviceFactory, loraDeviceCache);
// Send to message processor
using var messageProcessor = new MessageDispatcher(
ServerConfiguration,
deviceRegistry,
FrameCounterUpdateStrategyProvider);
payloadFcnt = await InitializeCacheToDefaultValuesAsync(payloadFcnt, simulatedDevice, messageProcessor);
// ****************************************************
// First part gives very good connectivity and ensure we set power to minimum and DR increase to 5
// ****************************************************
// set to very good lsnr and DR3
float currentLsnr = 20;
var currentDR = LoRaDataRate.SF9BW125;
// todo add case without buffer
for (var i = 0; i < messageCount; i++)
{
payloadFcnt = await SendMessage(currentLsnr, currentDR, payloadFcnt, simulatedDevice, messageProcessor, FrameControlFlags.Adr);
}
var payload = simulatedDevice.CreateUnconfirmedDataUpMessage("1234", fcnt: payloadFcnt, fctrlFlags: FrameControlFlags.AdrAckReq | FrameControlFlags.Adr);
var radioMetadata = new RadioMetadata(TestUtils.TestRegion.GetDataRateIndex(currentDR), Hertz.Mega(868.1), new RadioMetadataUpInfo(0, 0, 0, 0, currentLsnr));
using var request = CreateWaitableRequest(radioMetadata, payload);
messageProcessor.DispatchRequest(request);
Assert.True(await request.WaitCompleteAsync());
Assert.NotNull(request.ResponseDownlink);
Assert.Equal(2, DownstreamMessageSender.DownlinkMessages.Count);
var downlinkMessage = DownstreamMessageSender.DownlinkMessages[1];
var payloadDataDown = new LoRaPayloadData(downlinkMessage.Data);
// We expect a mac command in the payload
Assert.Equal(5, payloadDataDown.Frmpayload.Span.Length);
var decryptedPayload = payloadDataDown.Serialize(simulatedDevice.NwkSKey.Value);
Assert.Equal(FramePort.MacCommand, payloadDataDown.Fport);
Assert.Equal((byte)Cid.LinkADRCmd, decryptedPayload[0]);
var linkAdr = new LinkADRRequest(decryptedPayload);
Assert.Equal(DR5, linkAdr.DataRate);
Assert.Equal(DR5, loraDevice.DataRate);
Assert.Equal(DR5, reportedDR);
Assert.Equal(7, linkAdr.TxPower);
Assert.Equal(7, loraDevice.TxPower);
Assert.Equal(7, reportedTxPower);
Assert.Equal(payloadDataDown.DevAddr, loraDevice.DevAddr);
Assert.False(payloadDataDown.IsConfirmed);
Assert.Equal(MacMessageType.UnconfirmedDataDown, payloadDataDown.MessageType);
// 4. Frame counter up was updated
Assert.Equal(payloadFcnt, loraDevice.FCntUp);
// 5. Frame counter down is updated
Assert.Equal(InitialDeviceFcntDown + 1, loraDevice.FCntDown);
Assert.Equal(InitialDeviceFcntDown + 1, payloadDataDown.Fcnt);
// ****************************************************
// Second part reduce connectivity and verify the DR stay to 5 and power set to max
// ****************************************************
currentLsnr = -50;
// DR5
currentDR = LoRaDataRate.SF7BW125;
// todo add case without buffer
for (var i = 0; i < messageCount; i++)
{
payloadFcnt = await SendMessage(currentLsnr, currentDR, payloadFcnt, simulatedDevice, messageProcessor, FrameControlFlags.Adr);
}
payload = simulatedDevice.CreateUnconfirmedDataUpMessage("1234", fcnt: payloadFcnt, fctrlFlags: FrameControlFlags.AdrAckReq | FrameControlFlags.Adr);
var radioMetadataWithDatr5 = new RadioMetadata(TestUtils.TestRegion.GetDataRateIndex(currentDR), Hertz.Mega(868.1), new RadioMetadataUpInfo(0, 0, 0, 0, currentLsnr));
using var secondRequest = CreateWaitableRequest(radioMetadataWithDatr5, payload);
messageProcessor.DispatchRequest(secondRequest);
Assert.True(await secondRequest.WaitCompleteAsync());
Assert.NotNull(secondRequest.ResponseDownlink);
Assert.Equal(3, DownstreamMessageSender.DownlinkMessages.Count);
downlinkMessage = DownstreamMessageSender.DownlinkMessages[2];
payloadDataDown = new LoRaPayloadData(downlinkMessage.Data);
// We expect a mac command in the payload
Assert.Equal(5, payloadDataDown.Frmpayload.Span.Length);
decryptedPayload = payloadDataDown.Serialize(simulatedDevice.NwkSKey.Value);
Assert.Equal(FramePort.MacCommand, payloadDataDown.Fport);
Assert.Equal((byte)Cid.LinkADRCmd, decryptedPayload[0]);
linkAdr = new LinkADRRequest(decryptedPayload);
Assert.Equal(DR5, linkAdr.DataRate);
Assert.Equal(DR5, loraDevice.DataRate);
Assert.Equal(DR5, reportedDR);
Assert.Equal(0, linkAdr.TxPower);
Assert.Equal(0, loraDevice.TxPower);
Assert.Equal(0, reportedTxPower);
Assert.Equal(payloadDataDown.DevAddr, loraDevice.DevAddr);
Assert.False(payloadDataDown.IsConfirmed);
Assert.Equal(MacMessageType.UnconfirmedDataDown, payloadDataDown.MessageType);
// 4. Frame counter up was updated
Assert.Equal(payloadFcnt, loraDevice.FCntUp);
// 5. Frame counter down is updated
Assert.Equal(InitialDeviceFcntDown + 2, loraDevice.FCntDown);
Assert.Equal(InitialDeviceFcntDown + 2, payloadDataDown.Fcnt);
// Expectations
// 1. Message was sent to IoT Hub
LoRaDeviceClient.VerifyAll();
LoRaDeviceApi.VerifyAll();
Assert.True(secondRequest.ProcessingSucceeded);
}
public async Task Perform_DR_Adaptation_When_Needed(uint deviceId, float currentLsnr, string currentDRString, DataRateIndex expectedDR, int expectedTxPower)
{
var currentDR = LoRaDataRate.Parse(currentDRString);
var messageCount = 21;
uint payloadFcnt = 0;
const uint InitialDeviceFcntUp = 9;
const uint ExpectedDeviceFcntDown = 0;
var simulatedDevice = new SimulatedDevice(
TestDeviceInfo.CreateABPDevice(deviceId, gatewayID: ServerConfiguration.GatewayID),
frmCntUp: InitialDeviceFcntUp);
var loraDevice = CreateLoRaDevice(simulatedDevice);
LoRaDeviceClient.Setup(x => x.SendEventAsync(It.IsNotNull <LoRaDeviceTelemetry>(), null))
.ReturnsAsync(true);
LoRaDeviceClient.Setup(x => x.ReceiveAsync(It.IsNotNull <TimeSpan>()))
.ReturnsAsync((Message)null);
var twinDR = DR0;
var twinTxPower = 0;
LoRaDeviceClient.Setup(x => x.UpdateReportedPropertiesAsync(It.IsNotNull <TwinCollection>(), It.IsAny <CancellationToken>()))
.Callback <TwinCollection, CancellationToken>((t, _) =>
{
if (t.Contains(TwinProperty.DataRate))
{
twinDR = t[TwinProperty.DataRate];
}
if (t.Contains(TwinProperty.TxPower))
{
twinTxPower = (int)t[TwinProperty.TxPower];
}
})
.ReturnsAsync(true);
using var cache = EmptyMemoryCache();
using var loraDeviceCache = CreateDeviceCache(loraDevice);
using var deviceRegistry = new LoRaDeviceRegistry(ServerConfiguration, cache, LoRaDeviceApi.Object, LoRaDeviceFactory, loraDeviceCache);
// Send to message processor
using var messageProcessor = new MessageDispatcher(
ServerConfiguration,
deviceRegistry,
FrameCounterUpdateStrategyProvider);
payloadFcnt = await InitializeCacheToDefaultValuesAsync(payloadFcnt, simulatedDevice, messageProcessor);
for (var i = 0; i < messageCount; i++)
{
payloadFcnt = await SendMessage(currentLsnr, currentDR, payloadFcnt, simulatedDevice, messageProcessor, FrameControlFlags.Adr);
}
var payload = simulatedDevice.CreateUnconfirmedDataUpMessage("1234", fcnt: payloadFcnt, fctrlFlags: FrameControlFlags.AdrAckReq | FrameControlFlags.Adr);
var radioMetadata = new RadioMetadata(TestUtils.TestRegion.GetDataRateIndex(currentDR), Hertz.Mega(868.1), new RadioMetadataUpInfo(0, 0, 0, 0, currentLsnr));
using var request = CreateWaitableRequest(radioMetadata, payload);
messageProcessor.DispatchRequest(request);
Assert.True(await request.WaitCompleteAsync());
// Expectations
// 1. Message was sent to IoT Hub
LoRaDeviceClient.VerifyAll();
LoRaDeviceApi.VerifyAll();
Assert.True(request.ProcessingSucceeded);
Assert.NotNull(request.ResponseDownlink);
var downlinkMessage = DownstreamMessageSender.DownlinkMessages[1];
var payloadDataDown = new LoRaPayloadData(downlinkMessage.Data);
// We expect a mac command in the payload
if (deviceId == 221)
{
// In this case, no ADR adaptation is performed, so the message should be empty
Assert.Equal(0, payloadDataDown.Frmpayload.Span.Length);
Assert.Equal(0, payloadDataDown.Fopts.Span.Length);
}
else
{
Assert.Equal(5, payloadDataDown.Frmpayload.Span.Length);
var decryptedPayload = payloadDataDown.Serialize(simulatedDevice.NwkSKey.Value);
Assert.Equal(FramePort.MacCommand, payloadDataDown.Fport);
Assert.Equal((byte)Cid.LinkADRCmd, decryptedPayload[0]);
var linkAdr = new LinkADRRequest(decryptedPayload);
Assert.Equal(expectedDR, linkAdr.DataRate);
Assert.Equal(expectedDR, loraDevice.DataRate);
Assert.Equal(expectedDR, twinDR);
Assert.Equal(expectedTxPower, linkAdr.TxPower);
Assert.Equal(expectedTxPower, loraDevice.TxPower);
Assert.Equal(expectedTxPower, twinTxPower);
// in case no payload the mac is in the FRMPayload and is decrypted with NwkSKey
Assert.Equal(payloadDataDown.DevAddr, loraDevice.DevAddr);
Assert.False(payloadDataDown.IsConfirmed);
Assert.Equal(MacMessageType.UnconfirmedDataDown, payloadDataDown.MessageType);
// 4. Frame counter up was updated
Assert.Equal(payloadFcnt, loraDevice.FCntUp);
// 5. Frame counter down is updated
Assert.Equal(ExpectedDeviceFcntDown + 1, loraDevice.FCntDown);
Assert.Equal(ExpectedDeviceFcntDown + 1, payloadDataDown.Fcnt);
}
}
public async Task SendDownstreamAsync_Succeeds_WithValidDownlinkMessage_ClassADevice(bool rfchHasValue)
{
// arrange
var downlinkMessage = new DownlinkMessage(this.loraDataByteArray,
123456,
new ReceiveWindow(DataRateIndex.DR5, Hertz.Mega(868.5)),
new ReceiveWindow(DataRateIndex.DR0, Hertz.Mega(869.5)),
this.devEui,
RxDelay1,
LoRaDeviceClassType.A,
this.stationEui,
rfchHasValue ? 1 : null);
var actualMessage = string.Empty;
this.webSocketWriter.Setup(s => s.SendAsync(It.IsAny <string>(), It.IsAny <CancellationToken>()))
.Callback <string, CancellationToken>((message, _) =>
{
actualMessage = message;
});
// act
await downlinkSender.SendDownstreamAsync(downlinkMessage);
// assert
Assert.NotEmpty(actualMessage);
Assert.Contains(@"""msgtype"":""dnmsg""", actualMessage, StringComparison.InvariantCulture);
Assert.Contains(@"""DevEui"":""FFFFFFFFFFFFFFFF"",", actualMessage, StringComparison.InvariantCulture);
Assert.Contains(@"""dC"":0", actualMessage, StringComparison.InvariantCulture);
Assert.Contains(@"""pdu"":""5245465551513D3D"",", actualMessage, StringComparison.InvariantCulture);
Assert.Contains(@"""RxDelay"":1,", actualMessage, StringComparison.InvariantCulture);
Assert.Contains(@"""RX1DR"":5,", actualMessage, StringComparison.InvariantCulture);
Assert.Contains(@"""RX1Freq"":868500000,", actualMessage, StringComparison.InvariantCulture);
Assert.Contains(@"""RX2DR"":0,", actualMessage, StringComparison.InvariantCulture);
Assert.Contains(@"""RX2Freq"":869500000,", actualMessage, StringComparison.InvariantCulture);
Assert.Contains(@"""xtime"":123456,", actualMessage, StringComparison.InvariantCulture);
Assert.Contains(@"""priority"":0", actualMessage, StringComparison.InvariantCulture);
if (rfchHasValue)
{
Assert.Contains(@"""rctx"":1", actualMessage, StringComparison.InvariantCulture);
}
else
{
Assert.DoesNotContain("rctx", actualMessage, StringComparison.InvariantCulture);
}
}
public async Task SendDownstreamAsync_Fails_WithNonNullMessage_ButDefaultStationEui()
{
// arrange
var downlinkMessage = new DownlinkMessage(this.loraDataByteArray,
0,
new ReceiveWindow(DataRateIndex.DR5, Hertz.Mega(868.5)),
new ReceiveWindow(DataRateIndex.DR0, Hertz.Mega(868.5)),
this.devEui,
RxDelay0,
LoRaDeviceClassType.C);
// act and assert
await Assert.ThrowsAsync <ArgumentException>(() => this.downlinkSender.SendDownstreamAsync(downlinkMessage));
}