Fixed usage of system-level poll().

The bug in compat.py was unveiled after fixing bug tomerfiliba-org#182 and observing spinning processes.
After that, the poll() call in server.py became too slow (1s instead of 1ms),
leading to timeouts. The new value allows for not spinning too fast yet
reacting quickly to new incoming connections.

rpyc/lib/compat.py

@@ -92,7 +92,7 @@ def register(self, fd, mode):
             if "e" in mode:
                 flags |= select_module.POLLERR
             if "h" in mode:
-                # POLLRDHUP is a linux only extension, not know to python, but nevertheless
+                # POLLRDHUP is a linux only extension, not known to python, but nevertheless
                 # used and thus needed in the flags
                 POLLRDHUP = 0x2000
                 flags |= select_module.POLLHUP | select_module.POLLNVAL | POLLRDHUP
@@ -101,6 +101,9 @@ def register(self, fd, mode):
         def unregister(self, fd):
             self._poll.unregister(fd)
         def poll(self, timeout = None):
+            if timeout:
+                # the real poll takes milliseconds while we have seconds here
+                timeout = 1000*timeout
             events = self._poll.poll(timeout)
             processed = []
             for fd, evt in events:

rpyc/utils/server.py

@@ -385,9 +385,9 @@ def _poll_inactive_clients(self):
         Check whether inactive clients have become active'''
         while self.active:
             try:
-                # the actual poll, with a timeout of 1s so that we can exit in case
+                # the actual poll, with a timeout of 0.1s so that we can exit in case
                 # we re not active anymore
-                active_clients = self.poll_object.poll(1)
+                active_clients = self.poll_object.poll(0.1)
                 # for each client that became active, put them in the active queue
                 self._handle_poll_result(active_clients)
             except Exception: