private void TimerKeepAlive_Tick(object sender, EventArgs e)
{
var toDelete = new List <IPAddress>();
foreach (var address in connectedMotes.Keys)
{
var ts = DateTime.Now - connectedMotes[address].latestData;
if (ts.TotalSeconds > 1.0)
{
toDelete.Add(address);
Console.WriteLine("LOST UDPMOTE");
UdpmoteDisconnected?.Invoke(connectedMotes[address]);
}
else
{
//Console.WriteLine("ALIVE " + address.ToString());
byte[] buffer = Encoding.UTF8.GetBytes("KEEPALIVE#" + System.Environment.MachineName + "#" + connectedMotes[address].num.ToString());
_socketBC.SendTo(buffer, new IPEndPoint(address, portAnswerBC));
Console.WriteLine("SENDED KEEPALIVE: " + buffer.Length.ToString());
}
}
foreach (var address in toDelete)
{
connectedMotes.Remove(address);
ConnectedUdpmotesChanged?.Invoke(connectedMotes);
}
}
private void ReceiveData(IAsyncResult data)
{
if (_socket == null)
{
return;
}
try
{
State so = (State)data.AsyncState;
int bytes = _socket.EndReceiveFrom(data, ref epFrom);
if (bytes != 27)
{
throw new ArgumentOutOfRangeException();
}
var remoteIP = ((IPEndPoint)epFrom).Address;
if (availableMotes.ContainsKey(remoteIP))
{
if (availableMotes[remoteIP].latestData == DateTime.MinValue)
{
connectedMotes[remoteIP] = availableMotes[remoteIP];
ConnectedUdpmotesChanged?.Invoke(connectedMotes);
availableMotes.Remove(remoteIP);
connectedMotes[remoteIP].latestData = DateTime.Now;
UdpmoteConnected?.Invoke(connectedMotes[remoteIP]);
}
}
if (connectedMotes.ContainsKey(remoteIP))
{
connectedMotes[remoteIP].latestData = DateTime.Now;
UdpmoteChanged?.Invoke(new UdpmoteState(so.buffer));
}
else
{
Console.WriteLine("ERROR: Unknown UDPmote! " + remoteIP.ToString());
}
_socket.BeginReceiveFrom(so.buffer, 0, bufSize, SocketFlags.None, ref epFrom, ReceiveData, so);
}
catch (ObjectDisposedException)
{
}
}
