private void AcceptClient(IAsyncResult ar)
        {
            bool restarted = false;
            try
            {
                Socket tempClient = _clientsListener.EndAccept(ar);
                _clientsListener.BeginAccept(new AsyncCallback(AcceptClient), null);
                restarted = true; // do not touch
                if (servers.Count == 0)
                {
                    PlayerClient.SendClient_AlertMsg(tempClient, "Server is down, try again in a minute!", true);
                    IPEndPoint clientInfo = (IPEndPoint)tempClient.RemoteEndPoint;
                    RejectConnection(clientInfo.Address.ToString() + " is trying to login, but there's no available servers for him to join.", tempClient);
                }
                else if (clients.Count < Constants.MAX_CLIENTS_AT_ONCE)
                {
                    Candidate c = new Candidate();
                    clients.Add(c);
                    c.socket = tempClient;

                    c.buffer = new byte[c.socket.ReceiveBufferSize];
                    c.id = clientsCustomID;
                    c.connectionTime = DateTime.Now.Ticks;
                    clientsCustomID++;
                    c.socket.BeginReceive(c.buffer, 0, c.buffer.Length, SocketFlags.None, new AsyncCallback(OnClientReceive), c);
                }
                else RejectConnection("Rejecting Client -> too many clients attempting to log in...(Limit set to " + Constants.MAX_CLIENTS_AT_ONCE + ")", tempClient);// TODO: Make a queue and send it to client?
            }
            catch (Exception ex)
            {
                if (!restarted) _clientsListener.BeginAccept(new AsyncCallback(AcceptClient), null);
                appendLog("Exception in: Client Listener - AcceptClient() ->" + ex.Message);
                //MessageBox.Show(ex.Message, "Client Listener - AcceptClient()", MessageBoxButtons.OK, MessageBoxIcon.Error);

            }
        }
 public void RemoveClient(Candidate c)
 {
     if (c.socket != null && SocketConnected(c.socket))
     {
         c.socket.Shutdown(SocketShutdown.Both);
         c.socket.Close();
     }
     clients.Remove(c);
 }