Using the RTDE vid a Daemon in a URCAP

Has anyone successfully utilized the RTDE via a daemon running in a URCAP? I’ve tried to cobble together the various samples, and I’m really CLOSE (I think) but can’t quite get it to actually update the values in real time. I’ve got a method that prints the actual TCP pose and Joint positions to the screen, and this is correct, but if I move the robot and call it again, the values haven’t changed. It’s like I have to call “con.receive()” multiple times in a row in the python daemon before it ever updates the values.