public void TestConfirmedDataUp()
{
byte[] mhdr = new byte[1];
mhdr[0] = 128;
byte[] devAddr = new byte[4]
{
4, 3, 2, 1
};
byte[] fctrl = new byte[1]
{
0,
};
byte[] fcnt = new byte[2]
{
0, 0
};
byte[] fport = new byte[1]
{
10,
};
byte[] frmPayload = new byte[4]
{
4, 3, 2, 1,
};
var nwkkey = new byte[16] {
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16
};
var appkey = new byte[16] {
16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1
};
LoRaPayloadData lora = new LoRaPayloadData(LoRaMessageType.ConfirmedDataUp, devAddr, fctrl, fcnt, null, fport, frmPayload, 0);
lora.PerformEncryption(ConversionHelper.ByteArrayToString(appkey));
byte[] testEncrypt = new byte[4]
{
226, 100, 212, 247,
};
Assert.Equal(testEncrypt, lora.Frmpayload.ToArray());
lora.SetMic(ConversionHelper.ByteArrayToString(nwkkey));
lora.CheckMic(ConversionHelper.ByteArrayToString(nwkkey));
byte[] testMic = new byte[4]
{
181, 106, 14, 117,
};
Assert.Equal(testMic, lora.Mic.ToArray());
var mess = lora.GetByteMessage();
lora.ChangeEndianess();
Assert.Equal(mess, lora.RawMessage);
}
public void TestUnconfirmedUplink()
{
string jsonUplinkUnconfirmedDataUp = @"{ ""rxpk"":[
{
""time"":""2013-03-31T16:21:17.528002Z"",
""tmst"":3512348611,
""chan"":2,
""rfch"":0,
""freq"":866.349812,
""stat"":1,
""modu"":""LORA"",
""datr"":""SF7BW125"",
""codr"":""4/6"",
""rssi"":-35,
""lsnr"":5.1,
""size"":32,
""data"":""QAQDAgGAAQABppRkJhXWw7WC""
}]}";
byte[] physicalUpstreamPyld = new byte[12];
physicalUpstreamPyld[0] = 2;
var jsonUplinkUnconfirmedDataUpBytes = Encoding.Default.GetBytes(jsonUplinkUnconfirmedDataUp);
LoRaMessageWrapper jsonUplinkUnconfirmedMessage = new LoRaMessageWrapper(physicalUpstreamPyld.Concat(jsonUplinkUnconfirmedDataUpBytes).ToArray());
Assert.Equal(LoRaMessageType.UnconfirmedDataUp, jsonUplinkUnconfirmedMessage.LoRaMessageType);
LoRaPayloadData loRaPayloadUplinkObj = (LoRaPayloadData)jsonUplinkUnconfirmedMessage.LoRaPayloadMessage;
Assert.True(loRaPayloadUplinkObj.Fcnt.Span.SequenceEqual(new byte[2] {
1, 0
}));
Assert.True(loRaPayloadUplinkObj.DevAddr.Span.SequenceEqual(new byte[4] {
1, 2, 3, 4
}));
byte[] LoRaPayloadUplinkNwkKey = new byte[16] {
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2
};
Assert.True(loRaPayloadUplinkObj.CheckMic(ConversionHelper.ByteArrayToString(LoRaPayloadUplinkNwkKey)));
byte[] LoRaPayloadUplinkAppKey = new byte[16] {
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
};
var key = ConversionHelper.ByteArrayToString(LoRaPayloadUplinkAppKey);
Assert.Equal("hello", Encoding.ASCII.GetString((loRaPayloadUplinkObj.PerformEncryption(key))));
}
/// <summary>
/// Checks whether a <see cref="LoRaDevice"/> is valid for a <see cref="LoRaPayloadData"/>
/// It validates that the device has a <see cref="LoRaDevice.NwkSKey"/> and mic check
/// </summary>
/// <param name="logError">Indicates if error should be log if mic check fails</param>
private bool IsValidDeviceForPayload(LoRaDevice loRaDevice, LoRaPayloadData loraPayload, bool logError)
{
if (string.IsNullOrEmpty(loRaDevice.NwkSKey))
{
return(false);
}
var checkMicResult = loraPayload.CheckMic(loRaDevice.NwkSKey);
if (!checkMicResult && logError)
{
Logger.Log(loRaDevice.DevEUI, $"with devAddr {loRaDevice.DevAddr} check MIC failed", LogLevel.Debug);
}
return(checkMicResult);
}
public void TestMultipleRxpks()
{
// create multiple Rxpk message
string jsonUplink = @"{""rxpk"":[
{
""time"":""2013-03-31T16:21:17.528002Z"",
""tmst"":3512348611,
""chan"":2,
""rfch"":0,
""freq"":866.349812,
""stat"":1,
""modu"":""LORA"",
""datr"":""SF7BW125"",
""codr"":""4/6"",
""rssi"":-35,
""lsnr"":5.1,
""size"":32,
""data"":""AAQDAgEEAwIBBQQDAgUEAwItEGqZDhI=""
}, {
""time"":""2013-03-31T16:21:17.528002Z"",
""tmst"":3512348611,
""chan"":2,
""rfch"":0,
""freq"":866.349812,
""stat"":1,
""modu"":""LORA"",
""datr"":""SF7BW125"",
""codr"":""4/6"",
""rssi"":-35,
""lsnr"":5.1,
""size"":32,
""data"":""QAQDAgGAAQABppRkJhXWw7WC""
},{
""time"":""2013-03-31T16:21:17.528002Z"",
""tmst"":3512348611,
""chan"":2,
""rfch"":0,
""freq"":866.349812,
""stat"":1,
""modu"":""LORA"",
""datr"":""SF7BW125"",
""codr"":""4/6"",
""rssi"":-35,
""lsnr"":5.1,
""size"":32,
""data"":""AAQDAgEEAwIBBQQDAgUEAwItEGqZDhI=""
}
]}";
var multiRxpkInput = Encoding.Default.GetBytes(jsonUplink);
byte[] physicalUpstreamPyld = new byte[12];
physicalUpstreamPyld[0] = 2;
List <Rxpk> rxpk = Rxpk.CreateRxpk(physicalUpstreamPyld.Concat(multiRxpkInput).ToArray());
Assert.Equal(3, rxpk.Count);
TestRxpk(rxpk[0]);
TestRxpk(rxpk[2]);
Assert.True(LoRaPayload.TryCreateLoRaPayload(rxpk[1], out LoRaPayload jsonUplinkUnconfirmedMessage));
Assert.Equal(LoRaMessageType.UnconfirmedDataUp, jsonUplinkUnconfirmedMessage.LoRaMessageType);
LoRaPayloadData loRaPayloadUplinkObj = (LoRaPayloadData)jsonUplinkUnconfirmedMessage;
Assert.True(loRaPayloadUplinkObj.Fcnt.Span.SequenceEqual(new byte[2] {
1, 0
}));
Assert.True(loRaPayloadUplinkObj.DevAddr.Span.SequenceEqual(new byte[4] {
1, 2, 3, 4
}));
byte[] loRaPayloadUplinkNwkKey = new byte[16] {
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2
};
Assert.True(loRaPayloadUplinkObj.CheckMic(ConversionHelper.ByteArrayToString(loRaPayloadUplinkNwkKey)));
byte[] loRaPayloadUplinkAppKey = new byte[16] {
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
};
var key = ConversionHelper.ByteArrayToString(loRaPayloadUplinkAppKey);
Assert.Equal("hello", Encoding.ASCII.GetString(loRaPayloadUplinkObj.PerformEncryption(key)));
}