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add second.py and third.py Python examples

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This commit is contained in:
Mohit P. Tahiliani
2015-06-24 19:40:03 -07:00
parent 6433205b6c
commit d8ee7fffa4
3 changed files with 259 additions and 0 deletions
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examples/tutorial/second.py Normal file
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# -*- Mode: Python; -*-
# /*
# * This program is free software; you can redistribute it and/or modify
# * it under the terms of the GNU General Public License version 2 as
# * published by the Free Software Foundation;
# *
# * This program 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 this program; if not, write to the Free Software
# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
# *
# * Ported to Python by Mohit P. Tahiliani
# */
import ns.core
import ns.network
import ns.csma
import ns.internet
import ns.point_to_point
import ns.applications
import sys
# // Default Network Topology
# //
# // 10.1.1.0
# // n0 -------------- n1 n2 n3 n4
# // point-to-point | | | |
# // ================
# // LAN 10.1.2.0
cmd = ns.core.CommandLine()
cmd.nCsma = 3
cmd.verbose = "True"
cmd.AddValue("nCsma", "Number of \"extra\" CSMA nodes/devices")
cmd.AddValue("verbose", "Tell echo applications to log if true")
cmd.Parse(sys.argv)
nCsma = int(cmd.nCsma)
verbose = cmd.verbose
if verbose == "True":
ns.core.LogComponentEnable("UdpEchoClientApplication", ns.core.LOG_LEVEL_INFO)
ns.core.LogComponentEnable("UdpEchoServerApplication", ns.core.LOG_LEVEL_INFO)
nCsma = 1 if int(nCsma) == 0 else int(nCsma)
p2pNodes = ns.network.NodeContainer()
p2pNodes.Create(2)
csmaNodes = ns.network.NodeContainer()
csmaNodes.Add(p2pNodes.Get(1))
csmaNodes.Create(nCsma)
pointToPoint = ns.point_to_point.PointToPointHelper()
pointToPoint.SetDeviceAttribute("DataRate", ns.core.StringValue("5Mbps"))
pointToPoint.SetChannelAttribute("Delay", ns.core.StringValue("2ms"))
p2pDevices = pointToPoint.Install(p2pNodes)
csma = ns.csma.CsmaHelper()
csma.SetChannelAttribute("DataRate", ns.core.StringValue("100Mbps"))
csma.SetChannelAttribute("Delay", ns.core.TimeValue(ns.core.NanoSeconds(6560)))
csmaDevices = csma.Install(csmaNodes)
stack = ns.internet.InternetStackHelper()
stack.Install(p2pNodes.Get(0))
stack.Install(csmaNodes)
address = ns.internet.Ipv4AddressHelper()
address.SetBase(ns.network.Ipv4Address("10.1.1.0"), ns.network.Ipv4Mask("255.255.255.0"))
p2pInterfaces = address.Assign(p2pDevices)
address.SetBase(ns.network.Ipv4Address("10.1.2.0"), ns.network.Ipv4Mask("255.255.255.0"))
csmaInterfaces = address.Assign(csmaDevices)
echoServer = ns.applications.UdpEchoServerHelper(9)
serverApps = echoServer.Install(csmaNodes.Get(nCsma))
serverApps.Start(ns.core.Seconds(1.0))
serverApps.Stop(ns.core.Seconds(10.0))
echoClient = ns.applications.UdpEchoClientHelper(csmaInterfaces.GetAddress(nCsma), 9)
echoClient.SetAttribute("MaxPackets", ns.core.UintegerValue(1))
echoClient.SetAttribute("Interval", ns.core.TimeValue(ns.core.Seconds (1.0)))
echoClient.SetAttribute("PacketSize", ns.core.UintegerValue(1024))
clientApps = echoClient.Install(p2pNodes.Get(0))
clientApps.Start(ns.core.Seconds(2.0))
clientApps.Stop(ns.core.Seconds(10.0))
ns.internet.Ipv4GlobalRoutingHelper.PopulateRoutingTables()
pointToPoint.EnablePcapAll("second")
csma.EnablePcap ("second", csmaDevices.Get (1), True)
ns.core.Simulator.Run()
ns.core.Simulator.Destroy()