public void Listen()
{
_listeningSocket = _socketFactory.CreateListeningSocket();
EndPoint remoteEndpoint = new IPEndPoint(IPAddress.Any, Constants.MulticastPort);
var listenerState = new ListenerState();
_listeningSocket.BeginReceiveFrom(listenerState.Buffer,
ref remoteEndpoint, OnReceive, listenerState);
_stopped = false;
_started = true;
}