dulalsaurab
2085544799
* consumer/producer * ndnping * traffic generator * catchunks/putchunks Change-Id: Ie4c37f08f29a945f2fb1ce0b4d36da1bfb3edd3b
109 lines
3.6 KiB
Python
109 lines
3.6 KiB
Python
# -*- Mode:python; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
|
|
#
|
|
# Copyright (C) 2015-2021, The University of Memphis,
|
|
# Arizona Board of Regents,
|
|
# Regents of the University of California.
|
|
#
|
|
# This file is part of Mini-NDN.
|
|
# See AUTHORS.md for a complete list of Mini-NDN authors and contributors.
|
|
#
|
|
# Mini-NDN is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# Mini-NDN is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with Mini-NDN, e.g., in COPYING.md file.
|
|
# If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
from subprocess import PIPE
|
|
|
|
from mininet.log import setLogLevel, info
|
|
from mininet.topo import Topo
|
|
|
|
from minindn.minindn import Minindn
|
|
from minindn.apps.app_manager import AppManager
|
|
from minindn.util import MiniNDNCLI, getPopen
|
|
from minindn.apps.nfd import Nfd
|
|
from minindn.helpers.nfdc import Nfdc
|
|
|
|
PREFIX = "/example"
|
|
|
|
def printOutput(output):
|
|
_out = output.decode("utf-8").split("\n")
|
|
for _line in _out:
|
|
info(_line + "\n")
|
|
|
|
def run():
|
|
Minindn.cleanUp()
|
|
Minindn.verifyDependencies()
|
|
|
|
# Topology can be created/modified using Mininet topo object
|
|
topo = Topo()
|
|
info("Setup\n")
|
|
# add hosts
|
|
a = topo.addHost('a')
|
|
b = topo.addHost('b')
|
|
c = topo.addHost('c')
|
|
|
|
# add links
|
|
topo.addLink(a, b, delay='10ms', bw=10) # bw = bandwidth
|
|
topo.addLink(b, c, delay='10ms', bw=10)
|
|
|
|
ndn = Minindn(topo=topo)
|
|
ndn.start()
|
|
|
|
# configure and start nfd on each node
|
|
info("Configuring NFD\n")
|
|
AppManager(ndn, ndn.net.hosts, Nfd, logLevel="DEBUG")
|
|
|
|
"""
|
|
There are multiple ways of setting up routes in Mini-NDN
|
|
refer: https://minindn.memphis.edu/experiment.html#routing-options
|
|
It can also be set manually as follows. The important bit to note here
|
|
is the use of the Nfdc command
|
|
"""
|
|
links = {"a":["b"], "b":["c"]}
|
|
for first in links:
|
|
for second in links[first]:
|
|
host1 = ndn.net[first]
|
|
host2 = ndn.net[second]
|
|
interface = host2.connectionsTo(host1)[0][0]
|
|
interface_ip = interface.IP()
|
|
Nfdc.createFace(host1, interface_ip)
|
|
Nfdc.registerRoute(host1, PREFIX, interface_ip, cost=0)
|
|
|
|
# Start ping server
|
|
info("Starting pings...\n")
|
|
pingserver_log = open("/tmp/minindn/c/ndnpingserver.log", "w")
|
|
getPopen(ndn.net["c"], "ndnpingserver {}".format(PREFIX), stdout=pingserver_log,\
|
|
stderr=pingserver_log)
|
|
|
|
# start ping client
|
|
ping1 = getPopen(ndn.net["a"], "ndnping {} -c 5".format(PREFIX), stdout=PIPE, stderr=PIPE)
|
|
ping1.wait()
|
|
printOutput(ping1.stdout.read())
|
|
|
|
interface = ndn.net["b"].connectionsTo(ndn.net["a"])[0][0]
|
|
info("Failing link\n") # failing link by setting link loss to 100%
|
|
interface.config(delay="10ms", bw=10, loss=100)
|
|
info ("\n starting ping2 client \n")
|
|
|
|
ping2 = getPopen(ndn.net["a"], "ndnping {} -c 5".format(PREFIX), stdout=PIPE, stderr=PIPE)
|
|
ping2.wait()
|
|
printOutput(ping2.stdout.read())
|
|
|
|
interface.config(delay="10ms", bw=10, loss=0) # bringing back the link
|
|
|
|
info("\nExperiment Completed!\n")
|
|
MiniNDNCLI(ndn.net)
|
|
ndn.stop()
|
|
|
|
if __name__ == '__main__':
|
|
setLogLevel("info")
|
|
run() |