public static byte[] Receive(this IReceivingSocket socket, TimeSpan timeout)
{
var s = socket as NetMQSocket;
if (s == null)
{
throw new InvalidCastException(string.Format("Expected a NetMQSocket but got a {0}", socket.GetType()));
}
var result = s.Poll(PollEvents.PollIn, timeout);
if (!result.HasFlag(PollEvents.PollIn))
{
return(null);
}
return(socket.Receive());
}