a little experiment with zmq polling2

screenless/bureau/bureau.py

@@ -312,13 +312,12 @@ class Bureau(object):
         poller.register(self._recv, zmq.POLLIN)
 
         while True:
-            try:
+            msgs = dict(poller.poll(500))
-                msgs = dict(poller.poll(500))
+            if msgs:
-                if msgs:
+                if msgs.get(self._recv) == zmq.POLLIN:
-                    if msgs.get(self._recv) == zmq.POLLIN:
+                    msg = self._recv.recv_string(flags=zmq.NOBLOCK)
-                        msg = self._recv.recv_string(flags=zmq.NOBLOCK)
+            else:
-                else:
+                continue
-                    continue
             #    msg = self._recv.recv_string(flags=zmq.NOBLOCK)
             #except zmq.ZMQError:
             #    time.sleep(0.05)  # don't waste CPU