class NetworkLayer(BasedLayer):
def __init__(self, owner):
self.is_router = False
self.rt = RoutingTable()
self.it = InterfacesTable()
self.owner = owner
def update_local_routes(self):
list_of_interfaces = self.it.get_all_interfaces().values()
for iface in list_of_interfaces:
ipv6_address = iface.get_ipv6_address()
self.rt.add_route(ipv6_address.network, None, iface.name)
def get_ipv6(self):
list_of_interfaces = self.it.get_all_interfaces().values()
ipv6_address = None
while ipv6_address == None and len(list_of_interfaces)>0:
iface = list_of_interfaces.pop()
ipv6_address = iface.get_ipv6_address()
return ipv6_address
def handle_upper_msg(self, msg):
dst_node = connection_manager.get_element_by_name(msg.dst)
dst_ipv6_address = dst_node.net_layer.get_ipv6()
route = self.rt.get_route(dst_ipv6_address)
out_interface = self.it.get_interface_by_name(route.interface)
src_ipv6_address = out_interface.ipv6_address
ipv6_msg = IPv6Datagram(src_ipv6_address, dst_ipv6_address,msg)
out_interface.handle_upper_msg(ipv6_msg)
def handle_lower_msg(self, msg):
# act as a router
if self.is_router:
pass
# otherwise it is client
else:
print "rcv message from %s" % msg.dst_address
msg = msg.payload
self.upper_layer.handle_lower_msg(msg)
def __init__(self, owner):
self.is_router = False
self.rt = RoutingTable()
self.it = InterfacesTable()
self.owner = owner