old_contents: """Controller implementation for a virtual serial device."""
  from __future__ import absolute_import
  import time
  
  from .base import Controller
  
  
  class SerialControllerMixin(Controller):
      """An implementation of a Controller type that connects to a virtual serial
      device.
  
      This class acts as a mixin, and expects ``self.device`` to be an instance
      of ``serial.Serial``.
  
      TODO bah, this is kind of weird. refactor the relatinoship between
      sources/controllers.
      """
  
      WAITIED_FOR_CONNECTION = False
  
      def write_bytes(self, data):
          return self.device.write(data)
  
      def complex_request(self, request, blocking=True):
          if not self.WAITIED_FOR_CONNECTION:
              # TODO need to wait until device is connected or errors out
              # that may be a bug in the bluetooth stack, see
              # https://bugzilla.redhat.com/show_bug.cgi?id=1060457
              time.sleep(2)
          return super(SerialControllerMixin, self).complex_request(request, blocking)
  
new_contents: """Controller implementation for a virtual serial device."""
  from __future__ import absolute_import
  import time
  
  from .base import Controller
  
  
  class SerialControllerMixin(Controller):
      """An implementation of a Controller type that connects to a virtual serial
      device.
  
      This class acts as a mixin, and expects ``self.device`` to be an instance
      of ``serial.Serial``.
  
      TODO bah, this is kind of weird. refactor the relatinoship between
      sources/controllers.
      """
  
      WAITIED_FOR_CONNECTION = False
  
      def write_bytes(self, data):
          return self.device.write(data)
  
      def complex_request(self, request, blocking=True):
          if not self.WAITIED_FOR_CONNECTION:
              # TODO need to wait until device is connected or errors out
              # that may be a bug in the bluetooth stack, see
              # https://bugzilla.redhat.com/show_bug.cgi?id=1060457
              time.sleep(5)
          return super(SerialControllerMixin, self).complex_request(request, blocking)
  
subject: Increase serial connection wait time (for rfcomm Bluetooth socket).