def main():
if len(sys.argv) < 6:
print "Usage:\n{} <interface> <entity_title> <workspace_title> <input port> <output port>".format(
sys.argv[0])
sys.exit(1)
iface = sys.argv[1]
e = dts.Entity(iface, sys.argv[2], True)
print 'Entity "{}" registered.'.format(e.title)
w = dts.Workspace(iface, sys.argv[3], True, 1500, 'MMstreaming')
try:
w.attach(e)
print 'Attached to workspace "{}".'.format(w.title)
except dts.DTSException:
# Failed to attach, probably does not exists,
# then try to create
print 'Failed to attach, trying to create'
w.create_on_dts(e)
print 'Created workspace "{}" and attached to it.'.format(w.title)
def DTSreader_loop():
try:
while True:
msg = w.recv()
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.sendto(msg, ('127.0.0.1', int(sys.argv[5])))
#sock.sendto(msg, ('10.0.0.5', int(sys.argv[5])))
except gevent.GreenletExit, KeyboardInterrupt:
pass
def main():
if len(sys.argv) < 4 or len(sys.argv) > 6:
print "Usage:\n{} <interface> <entity_title> <workspace_title> [qosRequired] [bwRequired]".format(sys.argv[0])
sys.exit(1)
iface = sys.argv[1]
e = dts.Entity(iface, sys.argv[2], True)
print 'Entity "{}" registered.'.format(e.title)
try:
if sys.argv[4] in ['true', 'yes', 'on']:
qosRequired = True
else:
qosRequired = False
except IndexError:
qosRequired = False
try:
bwRequired = int(sys.argv[5])
except IndexError:
bwRequired = 0
w = dts.Workspace(iface, sys.argv[3], qosRequired, bwRequired)
try:
w.attach(e)
print 'Attached to workspace "{}".'.format(w.title)
except dts.DTSException:
# Failed to attach, probably does not exists,
# then try to create
print 'Failed to attach, trying to create'
w.create_on_dts(e)
print 'Created workspace "{}" and attached to it.'.format(w.title)
def reader_loop():
try:
while True:
msg = w.recv()
sys.stdout.write(msg)
except gevent.GreenletExit, KeyboardInterrupt:
pass
def main():
if len(sys.argv) < 4:
print "Usage:\n{} <interface> <entity_title> <workspace_title> <interval in ms>".format(
sys.argv[0])
print sys.argv[0]
print '\n'
print sys.argv[1]
print '\n'
print sys.argv[2]
print '\n'
sys.exit(1)
iface = sys.argv[1]
e = dts.Entity(iface, sys.argv[2], True)
print 'Entity "{}" registered.'.format(e.title)
resp = hashlib.sha256(sys.argv[3]).digest()[:6]
w = dts.Workspace(iface, sys.argv[3])
try:
w.attach(e)
print 'Attached to workspace "{}".'.format(w.title)
except dts.DTSException:
# Failed to attach, probably does not exists,
# then try to create
print 'Failed to attach, trying to create'
w.create_on_dts(e)
print 'Created workspace "{}" and attached to it.'.format(w.title)
def reader_loop():
try:
while True:
msg = w.recv()
sys.stdout.write(msg)
except gevent.GreenletExit, KeyboardInterrupt:
pass
def __init__(self,
max_rate=2500,
num_flows=10000,
pkt_size=100,
flow_size_cdf={
0.999: 10,
0.9999: 100,
0.99999: 1000,
1.0: 100000,
},
num_src_machines=100,
num_dst_machines=100,
iface="eth0",
batch_size=1,
entity='e',
workspace='w'):
'''
Initialize a packet generator instance with the specified
parameters:
- max_rate: maximum bitrate to gen packets in kbps
- num_flows: total num of active flows at any given time
- pkt_size: packet size
- dst_ports_pdf: a dict mapping cdf -> port num
"random" can be used instead of port num.
- flow_size_pdf: a dict mapping cdf -> flow sizes in packets
- num_src/dst_machines: total number of machines this flow generator
will simulate
- src/dst_ip_prefix: subnet the machines will use as source and dst addresses
format: "x.x.x.x/int"
- src/dst_mac_prefix: specify the macs for the machines. format:"xx:xx:xx:xx:xx:xx/int"
- src/dst_mac_list: If specified, this will override the prefix
- iface: name of interface to send packets on
'''
self.batch_size = batch_size
self.max_flows = num_flows
self.flow_size_cdf = flow_size_cdf
self.pkt_size = pkt_size
self.cdf_counter = 0
self.workspace = workspace
self.entity = entity
# Calculate the delay between packets to maintain bitrate
self.delay = self.batch_size * pkt_size * 8.0 / max_rate / 1000
#print "Delay: %s ms" % (self.delay*1000)
# maintains the active flow set
self.flows = []
# what flow should a packet come from?
self.next_flow = 0
# socket to use
if AS_ROOT:
e = dts.Entity(iface, entity, True)
print 'Entity "{}" registered.'.format(e.title)
w = dts.Workspace(iface, workspace)
try:
w.attach(e)
print 'Attached to workspace "{}".'.format(w.title)
except dts.DTSException:
# Failed to attach, probably does not exists,
# then try to create
w.create_on_dts(e)
print 'Created workspace "{}" and attached to it.'.format(
w.title)
super(FlowGenerator, self).__init__()
self.total_sent = 0
# cache the creation of a packet
self.eth = ImpactPacket.Ethernet()
self.ip = ImpactPacket.IP()
self.udp = ImpactPacket.UDP()
data_len = (pkt_size - self.eth.get_header_size() -
self.ip.get_header_size() - self.udp.get_header_size())
data = ImpactPacket.Data()
data.set_bytes(array.array('B', [i % 0xff for i in range(data_len)]))
self.udp.contains(data)
self.ip.contains(self.udp)
self.eth.contains(self.ip)
self.calibrated = False
def main():
argp = ArgumentParser(
version='1.0',
description="ETArch's SMART chat with QoS support",
)
helpType = 'NC: Network Control | telephony: Telephony | \
MMconferencing: Multimedia Conferencing | RT: Real-Time Interactive | \
MMstreaming: Multimedia Streaming |\
bVideo: Broadcast Video'
argp.add_argument('-i',
'--iface',
metavar='INTERFACE',
type=str,
help='interface')
argp.add_argument('-e', '--entity', type=str, help='entity title')
argp.add_argument('-w',
'--workspace',
required=True,
type=str,
help='workspace title')
argp.add_argument('--interval', type=int, help='interval in ms')
argp.add_argument('-q',
'--QoS',
action='store_const',
const=True,
help='require Quality of Service aware routing')
argp.add_argument('-bw',
'--bandwidth',
type=int,
help='bandwidth allocation required')
argp.add_argument('-t',
'--type',
choices=[
'NC', 'telephony', 'MMconferencing', 'RT',
'MMstreaming', 'bVideo'
],
help=helpType)
argp.add_argument('-vs',
'--server',
metavar='FILE',
type=str,
help='start a ffmpeg video server on this host')
argp.add_argument('-vc',
'--client',
action='store_const',
const=True,
help='start a ffmpeg video client on this host')
argp.add_argument('-b',
'--bitrate',
type=int,
help='bitrate for the ffmpeg video server (Kbits/s)')
args = argp.parse_args()
#print vars(args)
if args.type and not args.bandwidth:
argp.print_usage()
print 'chat.py: error: argument -bw/--bandwidth is required'
sys.exit(1)
if args.bitrate and not args.server:
argp.print_usage()
print 'chat.py: error: argument -vs/--server is required'
sys.exit(1)
if args.iface:
iface = args.iface
else:
iface = netifaces.interfaces()[1] if netifaces.interfaces(
)[0] == 'lo' else netifaces.interfaces()[0]
if args.entity:
entity = args.entity
else:
entity = iface.partition('-')[0] if iface.partition(
'-')[0][0] == 'h' else iface.partition('-')[2]
e = dts.Entity(iface, entity, True)
print 'Entity "{}" registered.'.format(e.title)
w = dts.Workspace(iface, args.workspace, args.QoS, args.bandwidth,
args.type)
try:
w.attach(e)
print 'Attached to workspace "{}".'.format(w.title)
except dts.DTSException:
# Failed to attach, probably does not exists,
# then try to create
print 'Failed to attach, trying to create'
w.create_on_dts(e)
print 'Created workspace "{}" and attached to it.'.format(w.title)
if not args.client:
def reader_loop():
try:
while True:
msg = w.recv()
sys.stdout.write(msg)
except gevent.GreenletExit, KeyboardInterrupt:
pass
reader = gevent.spawn(reader_loop)
mode="server"
elif opt=="-a":
addr=opt_l.pop(0)
elif opt=="-d":
TR=float(opt_l.pop(0))
elif opt=="-l":
PL=int(opt_l.pop(0))
elif opt=="-n":
NP=int(opt_l.pop(0))
#s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
iface = 'h2-eth0'
e = dts.Entity(iface, entity, True)
print 'Entity "{}" registered.'.format(e.title)
w = dts.Workspace(iface, workspace)
try:
w.attach(e)
print 'Attached to workspace "{}".'.format(w.title)
except dts.DTSException:
# Failed to attach, probably does not exists,
# then try to create
w.create_on_dts(e)
print 'Created workspace "{}" and attached to it.'.format(w.title)
sleep_delay=PL*8.0/TR
PLOVER=8+20+8 # 8 byte seq and stamp, 20 byte IP header, 8 byte UDP header
PL2=PL-PLOVER