private static LeAdvertisingEvent[] ParseAdvertisingReport(Queue <byte> data)
{
int numberOfEvents = data.Dequeue();
var events = new LeAdvertisingEvent[numberOfEvents];
for (int i = 0; i < numberOfEvents; i++)
{
events[i] = LeAdvertisingEvent.Parse(data);
}
return(events);
}
private static LeAdvertisingEvent[] ParseAdvertisingReport(Queue<byte> data)
{
int numberOfEvents = data.Dequeue();
var events = new LeAdvertisingEvent[numberOfEvents];
for (int i = 0; i < numberOfEvents; i++)
events[i] = LeAdvertisingEvent.Parse(data);
return events;
}
/// <summary>
/// Parse low energy advertising event to a beacon instance.
/// </summary>
/// <param name="e">The event.</param>
/// <returns>The beacon or null in case of failure.</returns>
internal static Beacon Parse(LeAdvertisingEvent e)
{
if (e.EventType == LeAdvertisingEventType.ScanRsp)
return null;
var payload = new Queue<byte>(e.Payload);
while (payload.Count > 0)
{
var adLength = payload.Dequeue();
if (payload.Count < adLength)
break;
var adType = payload.Dequeue();
if (adType == 0xFF || adLength >= 26)
{
var companyId = (ushort)((payload.Dequeue() << 8) + payload.Dequeue());
var b0advInd = payload.Dequeue();
var b1advInd = payload.Dequeue();
var uuid = payload.Dequeue(16);
var major = (ushort)((payload.Dequeue() << 8) + payload.Dequeue());
var minor = (ushort)((payload.Dequeue() << 8) + payload.Dequeue());
var txPower = (sbyte)payload.Dequeue();
return new Beacon
{
Uuid = uuid.ToLittleEndianFormattedUuidString(),
Address = e.Address,
Major = major,
Minor = minor,
Rssi = e.Rssi,
CalibratedTxPower = txPower,
CompanyId = companyId
};
}
else
{
if (adLength > 0)
payload.Dequeue(adLength - 1);
}
}
return null;
}
/// <summary>
/// Parse low energy advertising event to a beacon instance.
/// </summary>
/// <param name="e">The event.</param>
/// <returns>The beacon or null in case of failure.</returns>
internal static Beacon Parse(LeAdvertisingEvent e)
{
if (e.EventType == LeAdvertisingEventType.ScanRsp)
return null;
if (e.Payload.Length < 9)
return null;
var payload = new Queue<byte>(e.Payload);
var ad1Length = payload.Dequeue();
var ad1Type = payload.Dequeue();
var flags = payload.Dequeue();
var ad2Length = payload.Dequeue();
var ad2Type = payload.Dequeue();
var companyId = (ushort)((payload.Dequeue() << 8) + payload.Dequeue());
var b0advInd = payload.Dequeue();
var b1advInd = payload.Dequeue();
if (ad1Length != 2 || ad1Type != 0x01 || ad2Length < 26 || ad2Type != 0xFF)
return null;
var uuid = payload.Dequeue(16);
var major = (ushort)((payload.Dequeue() << 8) + payload.Dequeue());
var minor = (ushort)((payload.Dequeue() << 8) + payload.Dequeue());
var txPower = (sbyte)payload.Dequeue();
return new Beacon
{
Uuid = uuid.ToLittleEndianFormattedUuidString(),
Address = e.Address,
Major = major,
Minor = minor,
Rssi = e.Rssi,
CalibratedTxPower = txPower,
CompanyId = companyId
};
}
