def __init__(self, flow_id, source, destination, amount, env, time, bw):
""" Constructor for Flow class
"""
self._flow_id = flow_id
self._src = source
self._dest = destination
self._amount = amount * 8 * 10**6
self._pack_num = 0
self._cwnd = 1.0
self._ssthresh = 1000
self._resend_time = 10
self._min_RTT = 1000.0
self._last_RTT = 3000.0
self._SRTT = -1
self._RTTVAR = 0
self._RTO = 3000
self._packets_sent = []
self._packets_time_out = []
self._acks_arrived = set()
self.env = env
self.bw = bw
self._flow_start = time * 1000.0
self._last_packet = 0
self._done = 0
self._send_rate = Rate_Graph(self._flow_id,
"flow {0} send rate".format(self.flow_id),
self.env, self.bw)
self._receive_rate = Rate_Graph(
self._flow_id, "flow {0} receive"
" rate".format(self.flow_id), self.env, self.bw)
self.env.add_event(
Event("Start flow", self._flow_id, self.send_packet),
self._flow_start)
def __init__(self, id, device_a, device_b, delay, rate, capacity, env, bw):
self._id = id
self._device_a = device_a
self._device_b = device_b
# rate is initially Mbps. rate is stored as bits per ms.
self._rate = rate * 10 ** 3
self._delay = delay
# capacity is initially KB. capacity is stored as bits.
self._capacity = capacity * 1000 * 8
# Buffer to enter link
self._release_into_link_buffer = deque()
# Environment variables
self.env = env
self.bw = bw
# Buffer size. Initialize to 0 since there are no packets.
self._size = 0
self._distance = delay
# Recorder for rate data
self._send_rate = Rate_Graph(self._id,
"link {0} send rate".format(self._id),
self.env,
self.bw)
def __init__(self, router_id, env, bw):
"""Constructor for Router class."""
super(Router, self).__init__(router_id)
self.env = env
self.bw = bw
self._routing_table = {}
self._new_routing_table = {}
self._send_rate = Rate_Graph(router_id,
"router {0} send rate".format(router_id),
self.env, self.bw)
self._receive_rate = Rate_Graph(
router_id, "router {0} receive"
" rate".format(router_id), self.env, self.bw)
self.env.add_event(
Event("{} sent routing"
" packet".format(self._network_id), self._network_id,
self.start_new_routing), 0)