/// <summary>
/// Case of Downlink message. TODO refactor this
/// </summary>
/// <param name="input"></param>
public LoRaMetada(LoRaGenericPayload payloadMessage, LoRaMessageType messageType)
{
if (messageType == LoRaMessageType.JoinAccept)
{
rawB64data = Convert.ToBase64String(((LoRaPayloadJoinAccept)payloadMessage).ToMessage());
}
else if (messageType == LoRaMessageType.UnconfirmedDataDown || messageType == LoRaMessageType.ConfirmedDataDown)
{
rawB64data = Convert.ToBase64String(((LoRaPayloadStandardData)payloadMessage).ToMessage());
}
}
/// <summary>
/// This contructor is used in case of uplink message, hence we don't know the message type yet
/// </summary>
/// <param name="inputMessage"></param>
public LoRaMessage(byte[] inputMessage)
{
//packet normally sent by the gateway as heartbeat. TODO find more elegant way to integrate.
physicalPayload = new PhysicalPayload(inputMessage);
if (physicalPayload.message != null)
{
loraMetadata = new LoRaMetada(physicalPayload.message);
//set up the parts of the raw message
//status message
if (loraMetadata.rawB64data != null)
{
byte[] convertedInputMessage = Convert.FromBase64String(loraMetadata.rawB64data);
var messageType = convertedInputMessage[0] >> 5;
loRaMessageType = (LoRaMessageType)messageType;
//Uplink Message
if (messageType == (int)LoRaMessageType.UnconfirmedDataUp)
{
payloadMessage = new LoRaPayloadStandardData(convertedInputMessage);
}
else if (messageType == (int)LoRaMessageType.ConfirmedDataUp)
{
payloadMessage = new LoRaPayloadStandardData(convertedInputMessage);
}
else if (messageType == (int)LoRaMessageType.JoinRequest)
{
payloadMessage = new LoRaPayloadJoinRequest(convertedInputMessage);
}
isLoRaMessage = true;
}
else
{
isLoRaMessage = false;
}
}
else
{
isLoRaMessage = false;
}
}
public LoRaMessage(LoRaGenericPayload payload, LoRaMessageType type, byte[] physicalToken, string _datr, uint _rfch, double _freq, long _tmst)
{
//construct a Join Accept Message
if (type == LoRaMessageType.JoinAccept)
{
payloadMessage = (LoRaPayloadJoinAccept)payload;
loraMetadata = new LoRaMetada(payloadMessage, type);
var downlinkmsg = new DownlinkPktFwdMessage(loraMetadata.rawB64data, _datr, _rfch, _freq, _tmst + 5000000);
var jsonMsg = JsonConvert.SerializeObject(downlinkmsg);
Console.WriteLine(jsonMsg);
var messageBytes = Encoding.Default.GetBytes(jsonMsg);
physicalPayload = new PhysicalPayload(physicalToken, PhysicalIdentifier.PULL_RESP, messageBytes);
}
else if (type == LoRaMessageType.UnconfirmedDataDown)
{
payloadMessage = (LoRaPayloadStandardData)payload;
loraMetadata = new LoRaMetada(payloadMessage, type);
var downlinkmsg = new DownlinkPktFwdMessage(loraMetadata.rawB64data, _datr, _rfch, _freq, _tmst + 1000000);
var jsonMsg = JsonConvert.SerializeObject(downlinkmsg);
Console.WriteLine(jsonMsg);
var messageBytes = Encoding.Default.GetBytes(jsonMsg);
physicalPayload = new PhysicalPayload(physicalToken, PhysicalIdentifier.PULL_RESP, messageBytes);
}
else if (type == LoRaMessageType.ConfirmedDataDown)
{
payloadMessage = (LoRaPayloadStandardData)payload;
loraMetadata = new LoRaMetada(payloadMessage, type);
var downlinkmsg = new DownlinkPktFwdMessage(loraMetadata.rawB64data, _datr, _rfch, _freq, _tmst + 1000000);
var jsonMsg = JsonConvert.SerializeObject(downlinkmsg);
Console.WriteLine(jsonMsg);
var messageBytes = Encoding.Default.GetBytes(jsonMsg);
physicalPayload = new PhysicalPayload(physicalToken, PhysicalIdentifier.PULL_RESP, messageBytes);
}
}
/// <summary>
/// This contructor is used in case of downlink message
/// </summary>
/// <param name="inputMessage"></param>
/// <param name="type">
/// 0 = Join Request
/// 1 = Join Accept
/// 2 = Unconfirmed Data up
/// 3 = Unconfirmed Data down
/// 4 = Confirmed Data up
/// 5 = Confirmed Data down
/// 6 = Rejoin Request</param>
public LoRaMessage(LoRaGenericPayload payload, LoRaMessageType type, byte[] physicalToken)
{
//construct a Join Accept Message
if (type == LoRaMessageType.JoinAccept)
{
payloadMessage = (LoRaPayloadJoinAccept)payload;
loraMetadata = new LoRaMetada(payloadMessage, type);
var downlinkmsg = new DownlinkPktFwdMessage(loraMetadata.rawB64data);
var jsonMsg = JsonConvert.SerializeObject(downlinkmsg);
var messageBytes = Encoding.Default.GetBytes(jsonMsg);
physicalPayload = new PhysicalPayload(physicalToken, PhysicalIdentifier.PULL_RESP, messageBytes);
}
else if (type == LoRaMessageType.UnconfirmedDataDown)
{
throw new NotImplementedException();
}
else if (type == LoRaMessageType.ConfirmedDataDown)
{
throw new NotImplementedException();
}
}
