new_contents: #!/usr/bin/env python
  
  """
  This application presents a 'console' prompt to the user asking for read commands
  to read the BDT and FDT from a BBMD.
  """
  
  from bacpypes.debugging import bacpypes_debugging, ModuleLogger
  from bacpypes.consolecmd import ConsoleCmd
  from bacpypes.consolelogging import ArgumentParser
  
  from bacpypes.comm import bind, Client
  from bacpypes.core import run, enable_sleeping
  
  from bacpypes.pdu import Address
  from bacpypes.bvll import ReadBroadcastDistributionTable, \
      ReadBroadcastDistributionTableAck, ReadForeignDeviceTable, \
      ReadForeignDeviceTableAck, Result
  from bacpypes.bvllservice import AnnexJCodec, UDPMultiplexer
  
  # some debugging
  _debug = 0
  _log = ModuleLogger(globals())
  
  # globals
  this_application = None
  
  
  @bacpypes_debugging
  class ReadBBMDConsoleClient(ConsoleCmd, Client):
      def do_readbdt(self, args):
          """readbdt <addr>"""
          args = args.split()
          if _debug:
              ReadBBMDConsoleClient._debug("do_readbdt %r", args)
  
          # build a request and send it downstream
          read_bdt = ReadBroadcastDistributionTable(destination=Address(args[0]))
          self.request(read_bdt)
  
      def do_readfdt(self, args):
          """readfdt <addr>"""
          args = args.split()
          if _debug:
              ReadBBMDConsoleClient._debug("do_readfdt %r", args)
  
          # build a request and send it downstream
          read_fdt = ReadForeignDeviceTable(destination=Address(args[0]))
          self.request(read_fdt)
  
      def confirmation(self, pdu):
          """Filter for the acks and errors."""
          if _debug:
              ReadBBMDConsoleClient._debug("confirmation %r", pdu)
  
          if isinstance(pdu, (ReadBroadcastDistributionTableAck, ReadForeignDeviceTableAck, Result)):
              pdu.debug_contents()
  
  
  def main():
      global this_application
  
      # parse the command line arguments
      parser = ArgumentParser(description=__doc__)
      parser.add_argument(
          "local_address",
          help="IPv4 address",
          )
      args = parser.parse_args()
  
      if _debug:
          _log.debug("initialization")
          _log.debug("    - args: %r", args)
  
      local_address = Address(args.local_address)
      if _debug:
          _log.debug("    - local_address: %r", local_address)
  
      # make a console
      this_console = ReadBBMDConsoleClient()
      if _debug:
          _log.debug("    - this_console: %r", this_console)
  
      # create an Annex J codec, bound to the Annex J server
      # of the UDP multiplexer
      annexj = AnnexJCodec()
      mux = UDPMultiplexer(local_address)
  
      # bind the layers
      bind(this_console, annexj, mux.annexJ)
  
      # enable sleeping will help with threads
      enable_sleeping()
  
      _log.debug("running")
  
      run()
  
      _log.debug("fini")
  
  
  if __name__ == "__main__":
      main()
  
subject: read the BDT or FDT (issue #446)