def _add_onoff_app(self, start_time, end_time, local, remote, on_time,
off_time, data_rate, sport, dport):
"""add one ns3 onoff application to the network
"""
# ignore the network prefix length if there is
if '/' in remote: remote = remote.rsplit('/')[0]
if '/' in local: local = local.rsplit('/')[0]
### Install OnOff Application ###
socketType = "ns3::UdpSocketFactory"
# socketType = "ns3::TcpSocketFactory"
helper = ns3.OnOffHelper(socketType,
ns3.InetSocketAddress(remote, dport))
helper.SetAttribute("StartTime",
ns3.TimeValue(ns3.Time(str(start_time) + 's')))
helper.SetAttribute("StopTime",
ns3.TimeValue(ns3.Time(str(end_time) + 's')))
# helper.SetAttribute("Remote", ns3.AddressValue(ns3.Ipv4Address(remote)))
local_inet = ns3.InetSocketAddress(local, sport)
helper.SetAttribute("Local", ns3.AddressValue(local_inet))
helper.SetAttribute("DataRate",
ns3.StringValue(str(data_rate) + 'b/s'))
helper.SetAttribute("OnTime",
ns3.RandomVariableValue(on_time.to_ns3()))
helper.SetAttribute("OffTime",
ns3.RandomVariableValue(off_time.to_ns3()))
print('local, ', local)
local_node = self.net.search_node(local)
helper.Install(local_node)
### Install Sink Application ####
sinkLocalAddress = ns3.Address(
ns3.InetSocketAddress(ns3.Ipv4Address.GetAny(), dport))
sinkHelper = ns3.PacketSinkHelper(socketType, sinkLocalAddress)
helper.SetAttribute("StartTime",
ns3.TimeValue(ns3.Time(str(start_time) + 's')))
helper.SetAttribute("StopTime",
ns3.TimeValue(ns3.Time(str(end_time) + 's')))
remote_node = self.net.search_node(remote)
print('remote, ', remote)
sinkHelper.Install(remote_node)
print("""add an onoff application with
start_time: %f
end_time: %f
local: %s,
remote: %s,
on_time: %s,
off_time: %s""" %
(start_time, end_time, local, remote, on_time, off_time))
def onoff_app(network,
client_node,
server_node,
server_device,
start,
stop,
rate,
port=9,
packet_size=1024,
access_class=None,
ontime=1,
offtime=0):
"""Set up a OnOff client + sink server."""
server = network.nodes[server_node]
assert server_device in server.devices, \
"Device '%s' not found, available: %s" % (server_device, ", ".join(server.devices))
server_address = server.devices[server_device].interfaces[0].address
local_address = ns3.InetSocketAddress(ns3.Ipv4Address.GetAny(), port)
sink_helper = ns3.PacketSinkHelper("ns3::UdpSocketFactory", local_address)
server_apps = sink_helper.Install(server.ns3_node)
server_apps.Start(ns3.Seconds(start))
server_apps.Stop(ns3.Seconds(stop))
client = network.nodes[client_node]
remote_address = ns3.InetSocketAddress(server_address, port)
onoff_helper = ns3.OnOffHelper("ns3::UdpSocketFactory", ns3.Address())
onoff_helper.SetAttribute(
"OnTime", ns3.RandomVariableValue(ns3.ConstantVariable(ontime)))
onoff_helper.SetAttribute(
"OffTime", ns3.RandomVariableValue(ns3.ConstantVariable(offtime)))
onoff_helper.SetAttribute("DataRate",
ns3.DataRateValue(ns3.DataRate(rate)))
onoff_helper.SetAttribute("PacketSize", ns3.UintegerValue(packet_size))
onoff_helper.SetAttribute("Remote", ns3.AddressValue(remote_address))
# Set QoS Access Class -> Tid
# Note that this only works with a patched OnOffApplication with QosTid attribute
if access_class is not None:
access_class_to_qos_tid = {
"ac_vo": 6, # AC_VO (Tid: 6, 7)
"ac_vi": 4, # AC_VI (Tid: 4, 5)
"ac_be": 0, # AC_BE (Tid: 0)
"ac_bk": 1, # AC_BK (Tid: 1, 2)
"ac_be_nqos": 3, # AC_BE_NQOS (Tid: 3)
}
qos_tid = access_class_to_qos_tid[access_class.lower()]
onoff_helper.SetAttribute("QosTid", ns3.UintegerValue(qos_tid))
client_apps = onoff_helper.Install(client.ns3_node)
client_apps.Start(ns3.Seconds(start))
client_apps.Stop(ns3.Seconds(stop))
def main(argv):
#
# Allow the user to override any of the defaults and the above Bind() at
# run-time, via command-line arguments
#
cmd = ns3.CommandLine()
cmd.Parse(argv)
#
# Explicitly create the nodes required by the topology(shown above).
#
#print "Create nodes."
terminals = ns3.NodeContainer()
terminals.Create(4)
csmaSwitch = ns3.NodeContainer()
csmaSwitch.Create(1)
#print "Build Topology"
csma = ns3.CsmaHelper()
csma.SetChannelAttribute("DataRate",
ns3.DataRateValue(ns3.DataRate(5000000)))
csma.SetChannelAttribute("Delay", ns3.TimeValue(ns3.MilliSeconds(2)))
# Create the csma links, from each terminal to the switch
terminalDevices = ns3.NetDeviceContainer()
switchDevices = ns3.NetDeviceContainer()
for i in range(4):
link = csma.Install(
ns3.NodeContainer(ns3.NodeContainer(terminals.Get(i)), csmaSwitch))
terminalDevices.Add(link.Get(0))
switchDevices.Add(link.Get(1))
# Create the bridge netdevice, which will do the packet switching
switchNode = csmaSwitch.Get(0)
bridgeDevice = ns3.BridgeNetDevice()
switchNode.AddDevice(bridgeDevice)
for portIter in range(switchDevices.GetN()):
bridgeDevice.AddBridgePort(switchDevices.Get(portIter))
# Add internet stack to the terminals
internet = ns3.InternetStackHelper()
internet.Install(terminals)
# We've got the "hardware" in place. Now we need to add IP addresses.
#
#print "Assign IP Addresses."
ipv4 = ns3.Ipv4AddressHelper()
ipv4.SetBase(ns3.Ipv4Address("10.1.1.0"), ns3.Ipv4Mask("255.255.255.0"))
ipv4.Assign(terminalDevices)
#
# Create an OnOff application to send UDP datagrams from node zero to node 1.
#
#print "Create Applications."
port = 9 # Discard port(RFC 863)
onoff = ns3.OnOffHelper(
"ns3::UdpSocketFactory",
ns3.Address(ns3.InetSocketAddress(ns3.Ipv4Address("10.1.1.2"), port)))
onoff.SetAttribute("OnTime",
ns3.RandomVariableValue(ns3.ConstantVariable(1)))
onoff.SetAttribute("OffTime",
ns3.RandomVariableValue(ns3.ConstantVariable(0)))
app = onoff.Install(ns3.NodeContainer(terminals.Get(0)))
# Start the application
app.Start(ns3.Seconds(1.0))
app.Stop(ns3.Seconds(10.0))
# Create an optional packet sink to receive these packets
sink = ns3.PacketSinkHelper(
"ns3::UdpSocketFactory",
ns3.Address(ns3.InetSocketAddress(ns3.Ipv4Address.GetAny(), port)))
app = sink.Install(ns3.NodeContainer(terminals.Get(1)))
app.Start(ns3.Seconds(0.0))
#
# Create a similar flow from n3 to n0, starting at time 1.1 seconds
#
onoff.SetAttribute(
"Remote",
ns3.AddressValue(
ns3.InetSocketAddress(ns3.Ipv4Address("10.1.1.1"), port)))
app = onoff.Install(ns3.NodeContainer(terminals.Get(3)))
app.Start(ns3.Seconds(1.1))
app.Stop(ns3.Seconds(10.0))
app = sink.Install(ns3.NodeContainer(terminals.Get(0)))
app.Start(ns3.Seconds(0.0))
#
# Configure tracing of all enqueue, dequeue, and NetDevice receive events.
# Trace output will be sent to the file "csma-bridge.tr"
#
#print "Configure Tracing."
#ascii = ns3.AsciiTraceHelper();
#csma.EnableAsciiAll(ascii.CreateFileStream ("csma-bridge.tr"));
#
# Also configure some tcpdump traces; each interface will be traced.
# The output files will be named:
# csma-bridge.pcap-<nodeId>-<interfaceId>
# and can be read by the "tcpdump -r" command(use "-tt" option to
# display timestamps correctly)
#
csma.EnablePcapAll("csma-bridge", False)
#
# Now, do the actual simulation.
#
#print "Run Simulation."
ns3.Simulator.Run()
ns3.Simulator.Destroy()
def main(argv):
cmd = ns3.CommandLine()
cmd.NumNodesSide = None
cmd.AddValue(
"NumNodesSide",
"Grid side number of nodes (total number of nodes will be this number squared)"
)
cmd.Results = None
cmd.AddValue("Results", "Write XML results to file")
cmd.Plot = None
cmd.AddValue("Plot", "Plot the results using the matplotlib python module")
cmd.Parse(argv)
wifi = ns3.WifiHelper.Default()
wifiMac = ns3.NqosWifiMacHelper.Default()
wifiPhy = ns3.YansWifiPhyHelper.Default()
wifiChannel = ns3.YansWifiChannelHelper.Default()
wifiPhy.SetChannel(wifiChannel.Create())
ssid = ns3.Ssid("wifi-default")
wifi.SetRemoteStationManager("ns3::ArfWifiManager")
wifiMac.SetType("ns3::AdhocWifiMac", "Ssid", ns3.SsidValue(ssid))
internet = ns3.InternetStackHelper()
list_routing = ns3.Ipv4ListRoutingHelper()
olsr_routing = ns3.OlsrHelper()
static_routing = ns3.Ipv4StaticRoutingHelper()
list_routing.Add(static_routing, 0)
list_routing.Add(olsr_routing, 100)
internet.SetRoutingHelper(list_routing)
ipv4Addresses = ns3.Ipv4AddressHelper()
ipv4Addresses.SetBase(ns3.Ipv4Address("10.0.0.0"),
ns3.Ipv4Mask("255.255.255.0"))
port = 9 # Discard port(RFC 863)
onOffHelper = ns3.OnOffHelper(
"ns3::UdpSocketFactory",
ns3.Address(ns3.InetSocketAddress(ns3.Ipv4Address("10.0.0.1"), port)))
onOffHelper.SetAttribute("DataRate",
ns3.DataRateValue(ns3.DataRate("100kbps")))
onOffHelper.SetAttribute("OnTime",
ns3.RandomVariableValue(ns3.ConstantVariable(1)))
onOffHelper.SetAttribute("OffTime",
ns3.RandomVariableValue(ns3.ConstantVariable(0)))
addresses = []
nodes = []
if cmd.NumNodesSide is None:
num_nodes_side = NUM_NODES_SIDE
else:
num_nodes_side = int(cmd.NumNodesSide)
for xi in range(num_nodes_side):
for yi in range(num_nodes_side):
node = ns3.Node()
nodes.append(node)
internet.Install(ns3.NodeContainer(node))
mobility = ns3.ConstantPositionMobilityModel()
mobility.SetPosition(ns3.Vector(xi * DISTANCE, yi * DISTANCE, 0))
node.AggregateObject(mobility)
devices = wifi.Install(wifiPhy, wifiMac, node)
ipv4_interfaces = ipv4Addresses.Assign(devices)
addresses.append(ipv4_interfaces.GetAddress(0))
for i, node in enumerate(nodes):
destaddr = addresses[(len(addresses) - 1 - i) % len(addresses)]
#print i, destaddr
onOffHelper.SetAttribute(
"Remote", ns3.AddressValue(ns3.InetSocketAddress(destaddr, port)))
app = onOffHelper.Install(ns3.NodeContainer(node))
app.Start(ns3.Seconds(ns3.UniformVariable(20, 30).GetValue()))
#internet.EnablePcapAll("wifi-olsr")
flowmon_helper = ns3.FlowMonitorHelper()
#flowmon_helper.SetMonitorAttribute("StartTime", ns3.TimeValue(ns3.Seconds(31)))
monitor = flowmon_helper.InstallAll()
monitor.SetAttribute("DelayBinWidth", ns3.DoubleValue(0.001))
monitor.SetAttribute("JitterBinWidth", ns3.DoubleValue(0.001))
monitor.SetAttribute("PacketSizeBinWidth", ns3.DoubleValue(20))
ns3.Simulator.Stop(ns3.Seconds(44.0))
ns3.Simulator.Run()
def print_stats(os, st):
print >> os, " Tx Bytes: ", st.txBytes
print >> os, " Rx Bytes: ", st.rxBytes
print >> os, " Tx Packets: ", st.txPackets
print >> os, " Rx Packets: ", st.rxPackets
print >> os, " Lost Packets: ", st.lostPackets
if st.rxPackets > 0:
print >> os, " Mean{Delay}: ", (st.delaySum.GetSeconds() /
st.rxPackets)
print >> os, " Mean{Jitter}: ", (st.jitterSum.GetSeconds() /
(st.rxPackets - 1))
print >> os, " Mean{Hop Count}: ", float(
st.timesForwarded) / st.rxPackets + 1
if 0:
print >> os, "Delay Histogram"
for i in range(st.delayHistogram.GetNBins()):
print >> os, " ",i,"(", st.delayHistogram.GetBinStart (i), "-", \
st.delayHistogram.GetBinEnd (i), "): ", st.delayHistogram.GetBinCount (i)
print >> os, "Jitter Histogram"
for i in range(st.jitterHistogram.GetNBins()):
print >> os, " ",i,"(", st.jitterHistogram.GetBinStart (i), "-", \
st.jitterHistogram.GetBinEnd (i), "): ", st.jitterHistogram.GetBinCount (i)
print >> os, "PacketSize Histogram"
for i in range(st.packetSizeHistogram.GetNBins()):
print >> os, " ",i,"(", st.packetSizeHistogram.GetBinStart (i), "-", \
st.packetSizeHistogram.GetBinEnd (i), "): ", st.packetSizeHistogram.GetBinCount (i)
for reason, drops in enumerate(st.packetsDropped):
print " Packets dropped by reason %i: %i" % (reason, drops)
#for reason, drops in enumerate(st.bytesDropped):
# print "Bytes dropped by reason %i: %i" % (reason, drops)
monitor.CheckForLostPackets()
classifier = flowmon_helper.GetClassifier()
if cmd.Results is None:
for flow_id, flow_stats in monitor.GetFlowStats():
t = classifier.FindFlow(flow_id)
proto = {6: 'TCP', 17: 'UDP'}[t.protocol]
print "FlowID: %i (%s %s/%s --> %s/%i)" % \
(flow_id, proto, t.sourceAddress, t.sourcePort, t.destinationAddress, t.destinationPort)
print_stats(sys.stdout, flow_stats)
else:
print monitor.SerializeToXmlFile(cmd.Results, True, True)
if cmd.Plot is not None:
import pylab
delays = []
for flow_id, flow_stats in monitor.GetFlowStats():
tupl = classifier.FindFlow(flow_id)
if tupl.protocol == 17 and tupl.sourcePort == 698:
continue
delays.append(flow_stats.delaySum.GetSeconds() /
flow_stats.rxPackets)
pylab.hist(delays, 20)
pylab.xlabel("Delay (s)")
pylab.ylabel("Number of Flows")
pylab.show()
return 0