def init_response(bundle: TransactionBundle):
"""
Create the message object in bundle.response
:param bundle: The transaction bundle
"""
# Start building the response
if isinstance(bundle.request, SolicitMessage):
bundle.response = AdvertiseMessage(bundle.request.transaction_id)
elif isinstance(bundle.request, (RequestMessage, RenewMessage, RebindMessage,
ReleaseMessage, DeclineMessage, InformationRequestMessage)):
bundle.response = ReplyMessage(bundle.request.transaction_id)
elif isinstance(bundle.request, ConfirmMessage):
# Receipt of Confirm Messages: If [...] there were no addresses in any of the IAs sent by the client, the
# server MUST NOT send a reply to the client.
for option in bundle.request.get_options_of_type((IANAOption, IATAOption, IAPDOption)):
if option.get_options_of_type((IAAddressOption, IAPrefixOption)):
# Found an address or prefix option
break
else:
# Not found: ignore request
raise CannotRespondError("No IAs present in confirm reply")
bundle.response = ReplyMessage(bundle.request.transaction_id)
else:
raise CannotRespondError("Do not know how to reply to {}".format(type(bundle.request).__name__))
# Build the plain chain of relay reply messages
bundle.create_outgoing_relay_messages()
advertise_message = AdvertiseMessage(
transaction_id=bytes.fromhex('f350d6'),
options=[
IANAOption(iaid=bytes.fromhex('c43cb2f1'),
options=[
IAAddressOption(
address=IPv6Address('2001:db8:ffff:1:c::e09c'),
preferred_lifetime=375,
valid_lifetime=600),
]),
IAPDOption(iaid=bytes.fromhex('c43cb2f1'),
options=[
IAPrefixOption(
prefix=IPv6Network('2001:db8:ffcc:fe00::/56'),
preferred_lifetime=375,
valid_lifetime=600),
]),
ClientIdOption(duid=LinkLayerDUID(hardware_type=1,
link_layer_address=bytes.fromhex(
'3431c43cb2f1'))),
ServerIdOption(duid=LinkLayerTimeDUID(hardware_type=1,
time=488458703,
link_layer_address=bytes.fromhex(
'00137265ca42'))),
ReconfigureAcceptOption(),
RecursiveNameServersOption(
dns_servers=[IPv6Address('2001:4860:4860::8888')]),
],
)