public byte[] GetJoinRequest()
{
// create a join request
var AppEUI = LoRaTools.Utils.ConversionHelper.ByteArrayToString(this.LoRaDevice.GetAppEUI());
var DevEUI = LoRaTools.Utils.ConversionHelper.ByteArrayToString(this.LoRaDevice.GetDevEUI());
byte[] DevNonce = new byte[2];
if ((this.LoRaDevice.DevNonce == "") || (!this.isFirstJoinRequest))
{
Random random = new Random();
// DevNonce[0] = 0xC8; DevNonce[1] = 0x86;
random.NextBytes(DevNonce);
this.LoRaDevice.DevNonce = BitConverter.ToString(DevNonce).Replace("-", "");
Array.Reverse(DevNonce);
this.isFirstJoinRequest = false;
}
else
{
DevNonce = this.LoRaDevice.GetDevNonce();
Array.Reverse(DevNonce);
}
Logger.LogAlways(this.LoRaDevice.DevEUI, $"Join request sent DevNonce: {BitConverter.ToString(DevNonce).Replace("-","")}");
var join = new LoRaPayloadJoinRequest(AppEUI, DevEUI, DevNonce);
join.SetMic(this.LoRaDevice.AppKey);
return(join.GetByteMessage());
}
public byte[] GetJoinRequest()
{
//create a join request
byte[] AppEUI = LoRaDevice.GetAppEUI();
Array.Reverse(AppEUI);
byte[] DevEUI = LoRaDevice.GetDevEUI();
Array.Reverse(DevEUI);
byte[] DevNonce = new byte[2];
if ((LoRaDevice.DevNonce == "") || (!isFirstJoinRequest))
{
Random random = new Random();
// DevNonce[0] = 0xC8; DevNonce[1] = 0x86;
random.NextBytes(DevNonce);
LoRaDevice.DevNonce = BitConverter.ToString(DevNonce).Replace("-", "");
Array.Reverse(DevNonce);
isFirstJoinRequest = false;
}
else
{
DevNonce = LoRaDevice.GetDevNonce();
Array.Reverse(DevNonce);
}
Logger.Log(LoRaDevice.DevEUI, $"Join request sent DevNonce: {BitConverter.ToString(DevNonce).Replace("-","")}", Logger.LoggingLevel.Always);
var join = new LoRaPayloadJoinRequest(AppEUI, DevEUI, DevNonce);
join.SetMic(LoRaDevice.AppKey);
return(join.GetByteMessage());
}
byte[] CreateJoinRequest()
{
//create a join request
byte[] AppEUI = ConversionHelper.StringToByteArray(LoRaDevice.AppEUI);
Array.Reverse(AppEUI);
byte[] DevEUI = ConversionHelper.StringToByteArray(LoRaDevice.DeviceID);
Array.Reverse(DevEUI);
byte[] devNonce = new byte[2];
if ((string.IsNullOrEmpty(this.DevNonce)) || (!isFirstJoinRequest))
{
Random random = new Random();
// DevNonce[0] = 0xC8; DevNonce[1] = 0x86;
random.NextBytes(devNonce);
this.DevNonce = BitConverter.ToString(devNonce).Replace("-", "");
Array.Reverse(devNonce);
isFirstJoinRequest = false;
}
else
{
devNonce = ConversionHelper.StringToByteArray(this.DevNonce);
Array.Reverse(devNonce);
}
TestLogger.Log($"[{LoRaDevice.DeviceID}] Join request sent DevNonce: {BitConverter.ToString(devNonce).Replace("-","")} / {this.DevNonce}");
var join = new LoRaPayloadJoinRequest(AppEUI, DevEUI, devNonce);
join.SetMic(this.LoRaDevice.AppKey);
return(join.GetByteMessage());
}
public void JoinRequest_Should_Succeed_Mic_Check()
{
var appEUIText = "0005100000000004";
var appEUIBytes = ConversionHelper.StringToByteArray(appEUIText);
var devEUIText = "0005100000000004";
var devEUIBytes = ConversionHelper.StringToByteArray(devEUIText);
var devNonceText = "ABCD";
var devNonceBytes = ConversionHelper.StringToByteArray(devNonceText);
var appKey = "00000000000000000005100000000004";
var joinRequest = new LoRaPayloadJoinRequest(appEUIText, devEUIText, devNonceBytes);
joinRequest.SetMic(appKey);
Assert.True(joinRequest.CheckMic(appKey));
Assert.True(joinRequest.CheckMic(appKey)); // ensure multiple calls work!
var rxpk = new LoRaTools.LoRaPhysical.Rxpk()
{
Chan = 7,
Rfch = 1,
Freq = 903.700000,
Stat = 1,
Modu = "LORA",
Datr = "SF10BW125",
Codr = "4/5",
Rssi = -17,
Lsnr = 12.0f,
};
var data = joinRequest.GetByteMessage();
rxpk.Data = Convert.ToBase64String(data);
rxpk.Size = (uint)data.Length;
byte[] decodedJoinRequestBytes = Convert.FromBase64String(rxpk.Data);
var decodedJoinRequest = new LoRaTools.LoRaMessage.LoRaPayloadJoinRequest(decodedJoinRequestBytes);
Assert.True(decodedJoinRequest.CheckMic(appKey));
}