private ServiceUuid[] ExtractServices()
{
int i = 0;
List <ServiceUuid> res = null;
while (i < _data.Length)
{
int len = _data[i];
if (len == 0 || i + len >= _data.Length)
{
break;
}
int uuidLen = 0;
switch (_data[i + 1])
{
case 2:
case 3: // complete/incomplete 16-bit uids
uuidLen = 2;
break;
case 4:
case 5: // complete/incomplete 32-bit uuids
uuidLen = 4;
break;
case 6:
case 7: // complete/incomplete 128-bit uuids
uuidLen = 16;
break;
}
int n = i + 2;
i += 1 + len;
if (uuidLen > 0)
{
for (; n + uuidLen <= i; n += uuidLen)
{
(res ??= new List <ServiceUuid>()).Add(new ServiceUuid(Uuid.FromLE(_data.AsSpan(n, uuidLen))));
}
}
}
return(res?.ToArray() ?? Array.Empty <ServiceUuid>());
}
public void FromLE()
{
Assert.AreEqual(new Uuid("00112233-4455-6677-8899-AABBCCDDEEFF"),
Uuid.FromLE(new byte[] { 0xFF, 0xEE, 0xDD, 0xCC, 0xBB, 0xAA, 0x99, 0x88, 0x77, 0x66, 0x55, 0x44, 0x33, 0x22, 0x11, 0x00 }));
}
