if __name__ == '__main__':
object_L = [] # keeps track of objects, so we can kill their threads
# create network nodes
client = network.Host(1)
object_L.append(client)
server = network.Host(2)
object_L.append(server)
router_a = network.Router(name='A',
intf_count=1,
max_queue_size=router_queue_size)
object_L.append(router_a)
# create a Link Layer to keep track of links between network nodes
link_layer = link.LinkLayer()
object_L.append(link_layer)
# add all the links
# link parameters: from_node, from_intf_num, to_node, to_intf_num, mtu
link_layer.add_link(link.Link(client, 0, router_a, 0, 50))
link_layer.add_link(link.Link(router_a, 0, server, 0, 50))
# start all the objects
thread_L = [
threading.Thread(name=object.__str__(), target=object.run)
for object in object_L
]
for t in thread_L:
t.start()
if __name__ == '__main__':
object_L = [] #keeps track of objects, so we can kill their threads
#create network nodes
#part 3, add hosts, etc. (and make sure to start the threads)
client = network_1.Host(1) #client has address 1
object_L.append(client)
server = network_1.Host(2) #server has address 2
object_L.append(server)
router_a = network_1.Router(name='A',
intf_count=1,
max_queue_size=router_queue_size)
object_L.append(router_a)
#create a Link Layer to keep track of links between network nodes
link_layer = link_1.LinkLayer()
object_L.append(link_layer)
#add all the links
#client is output, router_a is input, 50 is largest size a packet can be to be transferred over a link
link_layer.add_link(link_1.Link(client, 0, router_a, 0, 50))
link_layer.add_link(link_1.Link(router_a, 0, server, 0,
50)) #for part 2, change mtu to 30
#start all the objects
thread_L = []
thread_L.append(threading.Thread(name=client.__str__(), target=client.run))
thread_L.append(threading.Thread(name=server.__str__(), target=server.run))
thread_L.append(
threading.Thread(name=router_a.__str__(), target=router_a.run))
