Python NetworkBlock示例

示例#1

from emulation_lib.emulation import Emulation
from emulation_lib.network_blocks.network_block import NetworkBlock
from emulation_lib.apps.udperf_app import UdperfApp
from emulation_lib.linkcmd_backends.bdl_ import BDL_

emu = Emulation("./config_files/example.config.py", [0, 1])
emu.setLinkCmdBackend(BDL_())
n0 = emu.getNode(0)
n1 = emu.getNode(1)

nb1 = NetworkBlock("./blocks/TwoNode_80211a_adhoc")
nb1.setNodes([n0, n1])

emu.addNetworkBlocks([nb1])

udperf_app1 = UdperfApp(n0, n1, 0.0, 99, 9000, 6000, 6001)
udperf_app2 = UdperfApp(n1, n0, 0.0, 99, 9000, 6000, 6001)

n0.addUserResult("/home/nfd/cmdScheduler.log", "cmdSched0.log_%RUN%")
n1.addUserResult("/home/nfd/cmdScheduler.log", "cmdSched1.log_%RUN%")

emu.setDuration(102)

emu.addApplications([udperf_app1, udperf_app2])

emu.setName('simple_sequence')
emu.setNumberOfRuns(3)
emu.setSecondsBetweenRuns(15)

for intervalSize in [1000, 500, 250, 100]:
    emu.setName(intervalSize)

示例#2

from emulation_lib.emulation import Emulation
from emulation_lib.network_blocks.network_block import NetworkBlock
from emulation_lib.apps.udperf_app import UdperfApp
from emulation_lib.linkcmd_backends.bdl_ import BDL_
from emulation_lib.linkcmd_backends.netem_bdl_ import  netem_BDL_
from emulation_lib.linkcmd_backends.d_bl import D_BL


emu = Emulation("../example.config.py", [0, 1])
emu.setLinkCmdBackend(D_BL())
n0 = emu.getNode(0)
n1 = emu.getNode(1)


nb1 = NetworkBlock("./blocks/two_node_7000")
nb1.setNodes([n0, n1])

emu.addNetworkBlocks([nb1])

udperf_app = UdperfApp(n1, n0, 0.0, 110, 7500, 6000, 6001)

n1.addUserResult("/home/nfd/cmdScheduler.log", "cmdSched" + str(n1.getId()) + ".log_%RUN%")

emu.setDuration(112)

emu.addApplications([udperf_app])
emu.setSecondsBetweenRuns(5)
emu.setNumberOfRuns(1)

for interval in [1000]:
    nb1.selectInterval(interval)

示例#3

文件： two_node_bwexp_intervals.py 项目： theuerse/emulation_lib-example-scenarios

from emulation_lib.emulation import Emulation
from emulation_lib.network_blocks.network_block import NetworkBlock
from emulation_lib.apps.udperf_app import UdperfApp
from emulation_lib.preprocessing.set_constant_value_for_column import SetConstantValueForColumn
from emulation_lib.linkcmd_backends.bdl_ import BDL_
from emulation_lib.linkcmd_backends.d_bl import D_BL

emu = Emulation("../example.config.py", [0, 1])
emu.setLinkCmdBackend(D_BL())
n0 = emu.getNode(0)
n1 = emu.getNode(1)


nb1 = NetworkBlock("./blocks/two_node_7000")
nb1.setNodes([n0, n1])
nb1.addPreprocessingStep(SetConstantValueForColumn("", 3, 27000.0)) # empty prefix -> apply to all files

emu.addNetworkBlocks([nb1])

udperf_app = UdperfApp(n1, n0, 0.0, 110, 7500, 6000, 6001)

n1.addUserResult("/home/nfd/cmdScheduler.log", "cmdSched" + str(n1.getId()) + ".log_%RUN%")

emu.setDuration(112)

emu.addApplications([udperf_app])
emu.setSecondsBetweenRuns(5)
emu.setNumberOfRuns(1)

for interval in [1000]:
    nb1.selectInterval(interval)

示例#4

from emulation_lib.emulation import Emulation
from emulation_lib.network_blocks.network_block import NetworkBlock
from emulation_lib.apps.udperf_app import UdperfApp
from emulation_lib.linkcmd_backends.b_ import B_

emu = Emulation("../example.config.py", [0, 1])
emu.setLinkCmdBackend(B_())
n0 = emu.getNode(0)
n1 = emu.getNode(1)


nb1 = NetworkBlock("./blocks/symmetric_half")
nb1.setNodes([n0, n1])
nb1.selectInterval(1000)

emu.addNetworkBlocks([nb1])

udperf_app = UdperfApp(n1, n0, 0.0, 12, 3000, 6000, 6001)

n1.addUserResult("/home/nfd/cmdScheduler.log", "cmdSched" + str(n1.getId()) + ".log_%RUN%")

emu.setDuration(14)

emu.addApplications([udperf_app])

emu.setName('symmetric_half')
emu.setOutputDirectory('./results/' + emu.getName())
emu.setNumberOfRuns(10)
emu.setSecondsBetweenRuns(5)

emu.start()

示例#5

from emulation_lib.emulation import Emulation
from emulation_lib.network_blocks.network_block import NetworkBlock
from emulation_lib.apps.udperf_app import UdperfApp
from emulation_lib.preprocessing.set_constant_value_for_column import SetConstantValueForColumn
from emulation_lib.linkcmd_backends.bd_ import BD_
from emulation_lib.linkcmd_backends.bdl_ import BDL_
from emulation_lib.linkcmd_backends.netem_bdl_ import netem_BDL_
from emulation_lib.linkcmd_backends.d_bl import D_BL
from emulation_lib.linkcmd_backends.dl_b import DL_B

cmd_dists = [BD_(), BDL_(), netem_BDL_(), D_BL(), DL_B()]
emu = Emulation("../example.config.py", [0, 1])
n0 = emu.getNode(0)
n1 = emu.getNode(1)

nb1 = NetworkBlock("./blocks/original_sim_normal")
nb1.selectInterval(1000)
nb1.setNodes([n0, n1])
nb1.addPreprocessingStep(SetConstantValueForColumn(
    "", 3, 27000.0))  # empty prefix -> apply to all files

emu.addNetworkBlocks([nb1])

udperf_app = UdperfApp(n1, n0, 0.0, 110, 7500, 6000, 6001)

n1.addUserResult("/home/nfd/cmdScheduler.log",
                 "cmdSched" + str(n1.getId()) + ".log_%RUN%")

emu.setDuration(112)

emu.addApplications([udperf_app])

示例#6

文件： baseline_60Mbps.py 项目： theuerse/emulation_lib-example-scenarios

from emulation_lib.emulation import Emulation
from emulation_lib.network_blocks.network_block import NetworkBlock
from emulation_lib.apps.udperf_app import UdperfApp
from emulation_lib.linkcmd_backends.b_ import B_

emu = Emulation("../example.config.py", [0, 1])
emu.setLinkCmdBackend(B_())
n0 = emu.getNode(0)
n1 = emu.getNode(1)

nb1 = NetworkBlock("./blocks/baseline_60Mbps")
nb1.setNodes([n0, n1])
nb1.selectInterval(1000)

emu.addNetworkBlocks([nb1])

udperf_app = UdperfApp(n1, n0, 0.0, 12, 60000, 6000, 6001)

n1.addUserResult("/home/nfd/cmdScheduler.log",
                 "cmdSched" + str(n1.getId()) + ".log_%RUN%")

emu.setDuration(14)

emu.addApplications([udperf_app])

emu.setName('baseline_60Mbps')
emu.setOutputDirectory('./results/' + emu.getName())
emu.setNumberOfRuns(10)
emu.setSecondsBetweenRuns(5)

emu.start()

示例#7

from emulation_lib.emulation import Emulation
from emulation_lib.network_blocks.network_block import NetworkBlock
from emulation_lib.apps.udperf_app import UdperfApp
from emulation_lib.preprocessing.set_constant_value_for_column import SetConstantValueForColumn
from emulation_lib.linkcmd_backends.bd_ import BD_
from emulation_lib.linkcmd_backends.bdl_ import BDL_
from emulation_lib.linkcmd_backends.netem_bdl_ import netem_BDL_
from emulation_lib.linkcmd_backends.d_bl import D_BL
from emulation_lib.linkcmd_backends.dl_b import DL_B

cmd_dists = [BD_(), BDL_(), netem_BDL_(), D_BL(), DL_B()]
emu = Emulation("../example.config.py", [0, 1])
n0 = emu.getNode(0)
n1 = emu.getNode(1)

nb1 = NetworkBlock("./blocks/TwoNode_80211a_adhoc")
nb1.selectInterval(1000)
nb1.setNodes([n0, n1])
nb1.addPreprocessingStep(SetConstantValueForColumn(
    "", 3, 27000.0))  # empty prefix -> apply to all files

emu.addNetworkBlocks([nb1])

udperf_app = UdperfApp(n1, n0, 0.0, 110, 7500, 6000, 6001)

n1.addUserResult("/home/nfd/cmdScheduler.log",
                 "cmdSched" + str(n1.getId()) + ".log_%RUN%")

emu.setDuration(112)

emu.addApplications([udperf_app])

示例#8

from emulation_lib.linkcmd_backends.b_ import B_
#    ==> n0
#   |^|
#   n1==> n2
#   |v|
#    ==> n3

emu = Emulation("../example.config.py", [0, 1, 2, 3])
emu.setLinkCmdBackend(B_())
n0 = emu.getNode(0)
n1 = emu.getNode(1)
n2 = emu.getNode(2)
n3 = emu.getNode(3)


nb1 = NetworkBlock("./blocks/symmetric")
nb1.setNodes([n0, n1])
nb1.selectInterval(1000)

nb2 = NetworkBlock("./blocks/symmetric")
nb2.setNodes([n2, n1])
nb2.selectInterval(1000)

nb3 = NetworkBlock("./blocks/symmetric")
nb3.setNodes([n3, n1])
nb3.selectInterval(1000)

emu.addNetworkBlocks([nb1, nb2, nb3])

udperf_app0 = UdperfApp(n1, n0, 0.0, 12, 6000, 6000, 6001)
udperf_app2 = UdperfApp(n1, n2, 0.0, 12, 6000, 6000, 6002)  # own-Ports must be unique on the same node!

示例#9

from emulation_lib.emulation import Emulation
from emulation_lib.network_blocks.network_block import NetworkBlock
from emulation_lib.apps.udperf_app import UdperfApp
from emulation_lib.linkcmd_backends.d_bl import D_BL

emu = Emulation("../example.config.py", [0, 1])
emu.setLinkCmdBackend(D_BL())
n0 = emu.getNode(0)
n1 = emu.getNode(1)

nb1 = NetworkBlock("./blocks/original_sim_normal")
nb1.setNodes([n0, n1])

emu.addNetworkBlocks([nb1])

udperf_app = UdperfApp(n1, n0, 0.0, 110, 7500, 6000, 6001)

n1.addUserResult("/home/nfd/cmdScheduler.log",
                 "cmdSched" + str(n1.getId()) + ".log_%RUN%")

emu.setDuration(112)

emu.addApplications([udperf_app])
emu.setSecondsBetweenRuns(5)
emu.setNumberOfRuns(1)

for interval in [1000, 500, 250, 100]:
    nb1.selectInterval(interval)
    emu.setName('original_sim_normal_interval_' + str(interval))
    emu.setOutputDirectory('./results/' + emu.getName())
    emu.start()

示例#10

from emulation_lib.emulation import Emulation
from emulation_lib.network_blocks.network_block import NetworkBlock
from emulation_lib.apps.udperf_app import UdperfApp
from emulation_lib.linkcmd_backends.b_ import B_
from emulation_lib.preprocessing.repeat_file_until import RepeatIntermedFileUntil

emu_duration = 60  # seconds

emu = Emulation("../example.config.py", [0, 1])
emu.setLinkCmdBackend(B_())
n0 = emu.getNode(0)
n1 = emu.getNode(1)


nb1 = NetworkBlock("./blocks/symmetric")
nb1.setNodes([n0, n1])
nb1.selectInterval(1000)
nb1.addPreprocessingStep(RepeatIntermedFileUntil(emu_duration, False))

emu.addNetworkBlocks([nb1])

udperf_app = UdperfApp(n1, n0, 0.0, emu_duration - 2, 6000, 6000, 6001)

n1.addUserResult("/home/nfd/cmdScheduler.log", "cmdSched" + str(n1.getId()) + ".log_%RUN%")

emu.setDuration(emu_duration)

emu.addApplications([udperf_app])

emu.setName('symmetric_repeated')
emu.setOutputDirectory('./results/' + emu.getName())

示例#11

emu = Emulation("./config_files/example.config.py", [0, 1, 2, 3])
emu.setLinkCmdBackend(BDL_())
n0 = emu.getNode(0)
n1 = emu.getNode(1)
n2 = emu.getNode(2)
n3 = emu.getNode(3)

s0_1 = StaticConnection(0, 1, 6442.800, 0.000724, 0.00)
s1_0 = StaticConnection(1, 0, 10983.440, 0.000632, 0.00)
s0_2 = StaticConnection(0, 2, 6442.800, 0.000724, 0.00)
s2_0 = StaticConnection(2, 0, 10983.440, 0.000632, 0.00)
snb = StaticNetworkBlock('../../emulation/test/static',
                         [s0_1, s1_0, s0_2, s2_0], 1000)
snb.setNodes([n0, n1, n2])

nb1 = NetworkBlock("./blocks/TwoNode_80211a_adhoc")
nb1.setNodes([n1, n3])
nb1.selectInterval(1000)

nb2 = NetworkBlock("./blocks/TwoNode_80211a_adhoc")
nb2.setNodes([n2, n3])
nb2.selectedInterval(1000)

emu.addNetworkBlocks([snb, nb1, nb2])

udperf_app0_1 = UdperfApp(n0, n1, 0.0, 99, 9000, 6000, 6001)
udperf_app1_0 = UdperfApp(n1, n0, 0.0, 99, 9000, 6000, 6001)
udperf_app0_2 = UdperfApp(n0, n2, 0.0, 99, 9000, 6000, 6001)
udperf_app2_0 = UdperfApp(n2, n0, 0.0, 99, 9000, 6000, 6001)
udperf_app1_3 = UdperfApp(n1, n3, 0.0, 99, 9000, 6000, 6001)
udperf_app3_1 = UdperfApp(n3, n1, 0.0, 99, 9000, 6000, 6001)

示例#12

from emulation_lib.emulation import Emulation
from emulation_lib.network_blocks.network_block import NetworkBlock
from emulation_lib.apps.udperf_app import UdperfApp
from emulation_lib.linkcmd_backends.b_ import B_

emu = Emulation("../example.config.py", [0, 1])
emu.setLinkCmdBackend(B_())
n0 = emu.getNode(0)
n1 = emu.getNode(1)


nb1 = NetworkBlock("./blocks/symmetric")
nb1.setNodes([n0, n1])

emu.addNetworkBlocks([nb1])

udperf_app = UdperfApp(n1, n0, 0.0, 12, 6000, 6000, 6001)

n1.addUserResult("/home/nfd/cmdScheduler.log", "cmdSched" + str(n1.getId()) + ".log_%RUN%")

emu.setDuration(14)

emu.addApplications([udperf_app])
emu.setSecondsBetweenRuns(5)
emu.setNumberOfRuns(10)

for interval in [1000, 500, 250, 100]:
    nb1.selectInterval(interval)
    emu.setName('symmetric_interval_' + str(interval))
    emu.setOutputDirectory('./results/' + emu.getName())
    emu.start()

示例#13

from emulation_lib.emulation import Emulation
from emulation_lib.network_blocks.network_block import NetworkBlock
from emulation_lib.apps.udperf_app import UdperfApp
from emulation_lib.linkcmd_backends.l_ import L_

emu = Emulation("../example.config.py", [0, 1])
emu.setLinkCmdBackend(L_())
n0 = emu.getNode(0)
n1 = emu.getNode(1)

# http://dashif.org/wp-content/uploads/2015/04/DASH-AVC-264-Test-Vectors-v09-CommunityReview.pdf
nb1 = NetworkBlock("./blocks/NP2j")
nb1.setNodes([n0, n1])
nb1.selectInterval(1000)

emu.addNetworkBlocks([nb1])

udperf_app = UdperfApp(n1, n0, 0.0, 12, 10000, 6000, 6001)

n1.addUserResult("/home/nfd/cmdScheduler.log",
                 "cmdSched" + str(n1.getId()) + ".log_%RUN%")

emu.setDuration(14)

emu.addApplications([udperf_app])

emu.setName('NP2j_loss')
emu.setOutputDirectory('./results/' + emu.getName())
emu.setNumberOfRuns(10)
emu.setSecondsBetweenRuns(5)

示例#14

from emulation_lib.emulation import Emulation
from emulation_lib.network_blocks.network_block import NetworkBlock
from emulation_lib.apps.udperf_app import UdperfApp
from emulation_lib.linkcmd_backends.b_ import B_
from emulation_lib.preprocessing.set_constant_value_for_column import SetConstantValueForColumn

emu_duration = 14  # seconds

emu = Emulation("../example.config.py", [0, 1])
emu.setLinkCmdBackend(B_())
n0 = emu.getNode(0)
n1 = emu.getNode(1)

nb1 = NetworkBlock("./blocks/symmetric")
nb1.setNodes([n0, n1])
nb1.selectInterval(1000)
nb1.addPreprocessingStep(SetConstantValueForColumn("1_0", 3, 10000.0))

emu.addNetworkBlocks([nb1])

udperf_app = UdperfApp(n1, n0, 0.0, emu_duration - 2, 6000, 6000, 6001)

n1.addUserResult("/home/nfd/cmdScheduler.log",
                 "cmdSched" + str(n1.getId()) + ".log_%RUN%")

emu.setDuration(emu_duration)

emu.addApplications([udperf_app])

emu.setName('symmetric_constantValue')
emu.setOutputDirectory('./results/' + emu.getName())

示例#15

文件： only_ndn_demo_apps.py 项目： theuerse/emulation_lib-example-scenarios

            emu = Emulation("./example.config.py", list(range(0,12 + NUM_CLIENTS)))
            emu.setName(os.path.basename(wifi_block) + "_" + app_type + "_" + str(run))
            emu.setLinkCmdBackend(BDL_())
            emu.setSecondsBetweenRuns(5)
            emu.setOutputDirectory('./results/onlyNdnDemoApps_experiment/' + emu.getName())
            emu.setDuration(EMULATION_DURATION) # seconds


            # ensure NFD-logfiles are cleaned up and wldrdaemons are shutdown
            for node in emu.getNodes():
                node.scheduleUserCmd(constants.SETUP_TIME, "sudo rm /var/run/shm/nfd_packet_log/nfd_packet_log.csv")
                node.scheduleUserCmd(constants.SETUP_TIME, "sudo killall wldrdaemon_udp")
                node.scheduleUserCmd(constants.SETUP_TIME, "sudo killall tail")

            # set up network-blocks
            abileneNetwork = NetworkBlock("./blocks/abilene")
            abileneNetwork.setNodes(emu.getNodes()[0:12])
            abileneNetwork.selectInterval(1000) # without consequence as network-properties are static anyway (in this scenario)
            abileneNetwork.addPreprocessingStep(RepeatIntermedFileUntil(EMULATION_DURATION, False))

            network_blocks = []

            # read topology from file
            with open("./topologies/abilene.txt","r") as topologyFile:
                topology = topologyFile.readlines()

            groups = {emu.getNode(serverNode): []}
            clientGatewayAssoc = {}

            # add blocks for "last-miles"
            for client_num in range(0, len(client_gateways)):

示例#16

文件： reaction_time.py 项目： theuerse/emulation_lib-example-scenarios

from emulation_lib.emulation import Emulation
from emulation_lib.network_blocks.network_block import NetworkBlock
from emulation_lib.apps.udperf_app import UdperfApp
from emulation_lib.linkcmd_backends.bdl_ import BDL_

emu = Emulation("./config_files/example.config.py", [0, 1])
emu.setLinkCmdBackend(BDL_())
n0 = emu.getNode(0)
n1 = emu.getNode(1)

nb1 = NetworkBlock("./blocks/profile1")
nb1.setNodes([n0, n1])
nb1.selectInterval(1000)

emu.addNetworkBlocks([nb1])

udperf_app1 = UdperfApp(n0, n1, 0.0, 19, 3000, 6000, 6001)
udperf_app2 = UdperfApp(n1, n0, 0.0, 19, 3000, 6000, 6001)

n0.addUserResult("/home/nfd/cmdScheduler.log", "cmdSched0.log_%RUN%")
n1.addUserResult("/home/nfd/cmdScheduler.log", "cmdSched1.log_%RUN%")

emu.setDuration(20)

emu.addApplications([udperf_app1, udperf_app2])

emu.setName('reactionTime')
emu.setOutputDirectory('./results/' + emu.getName())
emu.setNumberOfRuns(3)
emu.setSecondsBetweenRuns(15)

示例#17

文件： simple_mobility_802.11_g_ad_hoc_constant_intervals.py 项目： theuerse/emulation_lib-example-scenarios

from emulation_lib.emulation import Emulation
from emulation_lib.network_blocks.network_block import NetworkBlock
from emulation_lib.apps.udperf_app import UdperfApp
from emulation_lib.preprocessing.set_constant_value_for_column import SetConstantValueForColumn
from emulation_lib.linkcmd_backends.bdl_ import BDL_

emu = Emulation("example.config.py", [0, 1])
emu.setLinkCmdBackend(BDL_())
n0 = emu.getNode(0)
n1 = emu.getNode(1)


nb1 = NetworkBlock("./blocks/simple_mobility_802.11G_AdHoc_constant")
nb1.setNodes([n0, n1])
nb1.addPreprocessingStep(SetConstantValueForColumn("", 3, 27000.0))  # empty prefix -> apply to all files

emu.addNetworkBlocks([nb1])

udperf_app = UdperfApp(n1, n0, 0.0, 110, 10000, 6000, 6001)

n1.addUserResult("/home/nfd/cmdScheduler.log", "cmdSched" + str(n1.getId()) + ".log_%RUN%")

emu.setDuration(112)

emu.addApplications([udperf_app])
emu.setSecondsBetweenRuns(5)
emu.setNumberOfRuns(40)

for interval in [1000, 500, 250, 100, 50, 25]:
    nb1.selectInterval(interval)
    emu.setName(str(interval))

示例#18

文件： multisim.py 项目： theuerse/emulation_lib-example-scenarios

import os

emu = Emulation("../example.config.py", [0, 1])
emu.setLinkCmdBackend(BDL_())
n0 = emu.getNode(0)
n1 = emu.getNode(1)

blockPaths = [
    "./blocks/sim2/simple_mobility_802.11A_AdHoc",
    "./blocks/sim2/simple_mobility_802.11G_AdHoc_Arf",
    "./blocks/sim2/simple_mobility_802.11G_AdHoc_constant",
    "./blocks/sim2/two_nodes_802.11G",
    "./blocks/sim2/wifi_linearDistanceUDP_deferredStart_udperf",
    "./blocks/sim2/two_nodes_802.11G_unidir"
]
nb1 = NetworkBlock(blockPaths[0])  # init nb1
emu.addNetworkBlocks([nb1])

udperf_app = UdperfApp(n1, n0, 0.0, 110, 10000, 6000, 6001)

n1.addUserResult("/home/nfd/cmdScheduler.log",
                 "cmdSched" + str(n1.getId()) + ".log_%RUN%")

emu.setDuration(112)

emu.addApplications([udperf_app])
emu.setSecondsBetweenRuns(5)
emu.setNumberOfRuns(1)

for bpath in blockPaths:
    # update nb1

示例#19

from emulation_lib.emulation import Emulation
from emulation_lib.network_blocks.network_block import NetworkBlock
from emulation_lib.apps.udperf_app import UdperfApp
from emulation_lib.linkcmd_backends.l_ import L_

emu = Emulation("../example.config.py", [0, 1])
emu.setLinkCmdBackend(L_())
n0 = emu.getNode(0)
n1 = emu.getNode(1)

# http://dashif.org/wp-content/uploads/2015/04/DASH-AVC-264-Test-Vectors-v09-CommunityReview.pdf
nb1 = NetworkBlock("./blocks/flicflac")
nb1.setNodes([n0, n1])
nb1.selectInterval(1000)

emu.addNetworkBlocks([nb1])

udperf_app = UdperfApp(n1, n0, 0.0, 12, 10000, 6000, 6001)

n1.addUserResult("/home/nfd/cmdScheduler.log",
                 "cmdSched" + str(n1.getId()) + ".log_%RUN%")

emu.setDuration(14)

emu.addApplications([udperf_app])

emu.setName('flicflac_loss')
emu.setOutputDirectory('./results/' + emu.getName())
emu.setNumberOfRuns(10)
emu.setSecondsBetweenRuns(5)

示例#20

文件： hello_world.py 项目： theuerse/emulation_lib-example-scenarios

emu = Emulation("./example.config.py", list(range(0, NUMBER_OF_NODES)))
emu.setName("HelloWorld")
emu.setLinkCmdBackend(BDL_())
emu.setSecondsBetweenRuns(5)
emu.setOutputDirectory('./results/HelloWorld')
# time in seconds, after which a run is to be considered finished, which triggers the fetching
# of the results and the initiation of the next run
emu.setDuration(EMULATION_DURATION)  # seconds

#
# configure network block
#
# the folder containing the pre-calculated intermediate files to be used
WIFI_BLOCK = "./blocks/simple_mobility_802.11G_AdHoc_constant"
# create a new network block object based on the given intermediate file folder
wlan = NetworkBlock(WIFI_BLOCK)
wlan.setNodes(
    emu.getNodes()
    [0:NUMBER_OF_NODES])  # assign all two nodes to be part of the network

# select interval of network condition changes
# ./blocks/simple_mobility_802.11G_AdHoc_constant/0_1_1000.txt
# ./blocks/simple_mobility_802.11G_AdHoc_constant/1_0_1000.txt
wlan.selectInterval(1000)

# preprocessing steps are ways to modify intermediate files without changing the originals (experimentation)
# if the given intermediate files were too long, here we could use a preprocessing step to only take the first n seconds
wlan.addPreprocessingStep(RepeatIntermedFileUntil(EMULATION_DURATION, False))
# for this example, we only want to restrict the bandwidth (column #3 in the intermediate file)
# and therefore overwrite the columns for delay (#1) and loss (#2) with zeros using the following preprocessing steps
wlan.addPreprocessingStep(SetConstantValueForColumn("", 1, 0))