public DiscoveryEventArgs(DiscoveryType type, MAC mac, MacType macType, byte[] rawAdvertisement, sbyte rssi)
{
Type = type;
MAC = mac;
MacType = macType;
RawAdvertisements = rawAdvertisement;
Advertisements = new Dictionary <byte, byte[]>();
var i = 0;
while (i < rawAdvertisement.Length)
{
// Notice that advertisement or scan response data must be formatted in accordance to the Bluetooth Core
// Specification.See BLUETOOTH SPECIFICATION Version 4.0[Vol 3 - Part C - Chapter 11].
var length = rawAdvertisement[i++];
if (length == 0)
{
break;
}
var key = rawAdvertisement[i++];
var value = new byte[length - 1];
Array.Copy(rawAdvertisement, i, value, 0, value.Length);
Advertisements[key] = value;
i += value.Length;
}
Name = Advertisements.TryGetValue(0x08, out var nameValue) || Advertisements.TryGetValue(0x09, out nameValue)
? Encoding.UTF8.GetString(nameValue)
: null;
RSSI = rssi;
}
public async Task <Peripheral> ConnectAsync(MAC mac, MacType macType)
{
var connectionTCS = new TaskCompletionSource <byte>();
var onStatus = new EventHandler <StatusEventArgs>((s, e) =>
{
var eMAC = new MAC(e.Address);
var eMacType = (MacType)e.AddressType;
if (eMAC != mac || eMacType != macType)
{
return;
}
connectionTCS.TrySetResult(e.Connection);
});
_messageHub.Connection.Status += onStatus;
try
{
var value = mac.ToArray();
var type = (AddressType)macType;
await _messageHub.GAP.ConnectDirectAsync(value, type, 0x20, 0x30, 0x100, 0);
var connection = await connectionTCS.Task;
var peripheral = new Peripheral(connection, mac, macType);
_peripherals[connection] = peripheral;
return(peripheral);
}
finally
{
_messageHub.Connection.Status -= onStatus;
}
}
public Peripheral(byte connection, MAC mac, MacType macType)
{
Services = new Dictionary <ushort, GattService>();
Characteristics = new Dictionary <ushort, GattCharacteristic>();
Connection = connection;
MAC = mac;
MacType = macType;
}
private void OnScanResponse(object sender, ScanResponseEventArgs e)
{
var type = (DiscoveryType)e.PacketType;
var mac = new MAC(e.Sender);
var macType = (MacType)e.AddressType;
var eventArgs = new DiscoveryEventArgs(type, mac, macType, e.Data, e.RSSI);
Discovered?.Invoke(this, eventArgs);
}