def _send_initial_csm(self):
my_csm = Message(code=CSM)
# this is a tad awkward in construction because the options objects
# were designed under the assumption that the option space is constant
# for all message codes.
block_length = optiontypes.UintOption(2, self._my_max_message_size)
my_csm.opt.add_option(block_length)
supports_block = optiontypes.UintOption(4, 0)
my_csm.opt.add_option(supports_block)
self._send_message(my_csm)
def abort(self, errormessage=None, bad_csm_option=None):
self.log.warning("Aborting connection: %s", errormessage)
abort_msg = Message(code=ABORT)
if errormessage is not None:
abort_msg.payload = errormessage.encode('utf8')
if bad_csm_option is not None:
bad_csm_option_option = optiontypes.UintOption(2, bad_csm_option)
abort_msg.opt.add_option(bad_csm_option_option)
self._abort_with(abort_msg)
def abort(self, errormessage=None, bad_csm_option=None):
self.log.warning("Aborting connection: %s", errormessage)
abort_msg = Message(code=ABORT)
if errormessage is not None:
abort_msg.payload = errormessage.encode('utf8')
if bad_csm_option is not None:
bad_csm_option_option = optiontypes.UintOption(2, bad_csm_option)
abort_msg.opt.add_option(bad_csm_option_option)
if self._transport is not None:
self._send_message(abort_msg)
self._transport.close()
else:
# FIXME: find out how this happens; i've only seen it after nmap
# runs against an aiocoap server and then shutting it down.
# "poisoning" the object to make sure this can not be exploited to
# bypass the server shutdown.
self._ctx = None