public void testDetectsSBeacon()
{
byte[] bytes = HexStringToByteArray("02011a1bff1801031501000100c502000000000000000003");
SBeaconParser parser = new SBeaconParser();
SBeacon sBeacon = (SBeacon)parser.FromScanData(bytes, -55, null);
AssertEx.NotNull("SBeacon should be not null if parsed successfully", sBeacon);
AssertEx.AreEqual("id should be parsed", "0x000000000003", sBeacon.Id);
AssertEx.AreEqual("group should be parsed", 1, sBeacon.Group);
AssertEx.AreEqual("time should be parsed", 2, sBeacon.Time);
AssertEx.AreEqual("txPower should be parsed", -59, sBeacon.TxPower);
}
//private static final String TAG = "SBeaconParser";
public override Beacon FromScanData(byte[] scanData, int rssi, Android.Bluetooth.BluetoothDevice device)
{
int startByte = 2;
while (startByte <= 5)
{
// "m:2-3=0203,i:2-2,i:7-8,i:14-19,d:10-13,p:9-9"
if (((int)scanData[startByte + 3] & 0xff) == 0x03 &&
((int)scanData[startByte + 4] & 0xff) == 0x15)
{
//BeaconManager.logDebug(TAG, "This is a SBeacon beacon advertisement");
// startByte+0 company id (2 bytes)
// startByte+2 = 02 (1) byte header
// startByte+3 = 0315 (2 bytes) header
// startByte+5 = Beacon Type 0x01
// startByte+6 = Reserved (1 bytes)
// startByte+7 = Security Code (2 bytes) => Major little endian
// startByte+9 = Tx Power => Tx Power
// startByte+10 = Timestamp (4 bytes) => Minor (2 LSBs) little endian
// startByte+14 = Beacon ID (6 bytes) -> UUID little endian
int grouping = (scanData[startByte + 8] & 0xff) * 0x100 + (scanData[startByte + 7] & 0xff);
int clock = (scanData[startByte + 13] & 0xff) * 0x1000000 + (scanData[startByte + 12] & 0xff) * 0x10000 + (scanData[startByte + 11] & 0xff) * 0x100 + (scanData[startByte + 10] & 0xff);
int txPower = (int)(sbyte)scanData[startByte + 9]; // this one is signed
byte[] beaconId = new byte[6];
//Java.Lang.JavaSystem.Arraycopy(scanData, startByte+14, beaconId, 0, 6);
Array.Copy(scanData, startByte + 14, beaconId, 0, 6);
String hexString = BytesToHex(beaconId);
StringBuilder sb = new StringBuilder();
sb.Append(hexString.Substring(0, 12));
String id = "0x" + sb.ToString();
int beaconTypeCode = (scanData[startByte + 3] & 0xff) * 0x100 + (scanData[startByte + 2] & 0xff);
String mac = null;
if (device != null)
{
mac = device.Address;
}
Beacon beacon = new SBeacon(grouping, id, clock, txPower, rssi, beaconTypeCode, mac);
return(beacon);
}
startByte++;
}
return(null);
}
