def handle_rx(self, packet, port):
"""
Called by the framework when this Entity receives a packet.
packet is a Packet (or subclass).
port is the port number it arrived on.
You definitely want to fill this in.
"""
#self.log("RX %s on %s (%s)", packet, port, api.current_time())
if isinstance(packet, basics.RoutePacket):
self.routingTable[port] = [packet.latency, packet.destination]
if packet.destination in self.distanceVector:
if self.distanceVector[packet.destination][
0] >= packet.latency + self.neighbors[port]:
self.distanceVector[packet.destination] = [
packet.latency + self.neighbors[port], port
]
else:
self.distanceVector[packet.destination] = [
packet.latency + self.neighbors[port], port
]
api.create_timer(15, self.expire_route, False, False,
[packet.destination])
elif isinstance(packet, basics.HostDiscoveryPacket):
self.distanceVector[packet.src] = [self.neighbors[port], port]
self.directHosts[packet.src] = port
else:
# Totally wrong behavior for the sake of demonstration only: send
# the packet back to where it came from!
# self.send(packet, port=port)
if packet.dst in self.distanceVector:
if self.distanceVector[packet.dst][1] != port:
self.send(packet, self.distanceVector[packet.dst][1])
def start_timer(self, interval=None):
"""
Start the timer that calls handle_timer()
This should get called in the constructor. You shouldn't override this.
"""
if interval is None:
interval = self.DEFAULT_TIMER_INTERVAL
if interval is None: return
api.create_timer(interval, self.handle_timer)
def start_timer (self, interval = None):
"""
Start the timer that calls handle_timer()
This should get called in the constructor. You shouldn't override this.
"""
if interval is None:
interval = self.DEFAULT_TIMER_INTERVAL
if interval is None: return
api.create_timer(interval, self.handle_timer)