dns query example with scapy

myexample.py

# -*- coding:utf-8 -*-

from datetime import datetime
from scapy.all import DNS
from scapy.all import DNSQR
from scapy.all import IP
from scapy.all import UDP
from scapy.all import send
import multiprocessing as mp
import sys


COUNT = int(sys.argv[1])
PROCS = int(sys.argv[2])


def sendPacket():
    packet = IP(dst="127.0.0.1") / UDP() / DNS(qd=DNSQR(
        qname="localhost", qtype="A"))
    send(packet, count=COUNT, verbose=False)


def main():
    ps = [mp.Process(target=sendPacket) for i in xrange(0, PROCS)]
    time1 = datetime.now()
    print time1
    for p in ps:
        p.start()
    for p in ps:
        p.join()
    time2 = datetime.now()
    print len(ps), "x", COUNT, "=", len(ps) * COUNT, "packets.",
    print time2 - time1,
    print len(ps) * COUNT / (time2 - time1).seconds, "qps"


if __name__ == "__main__":
    main()

result.txt

bvuntu% sudo python myexample.py 1000 1 2>/dev/null 
2015-07-07 15:06:21.386702
1 x 1000 = 1000 packets. 0:00:09.536814 111 qps

bvuntu% sudo python myexample.py 1000 2 2>/dev/null
2015-07-07 15:06:34.176933
2 x 1000 = 2000 packets. 0:00:15.062760 133 qps

bvuntu% sudo python myexample.py 1000 3 2>/dev/null
2015-07-07 15:06:58.848696
3 x 1000 = 3000 packets. 0:00:17.410881 176 qps

bvuntu% sudo python myexample.py 1000 4 2>/dev/null
2015-07-07 15:07:27.936026
4 x 1000 = 4000 packets. 0:00:17.823769 235 qps

bvuntu% sudo python myexample.py 1000 30 2>/dev/null
2015-07-07 15:07:50.223700
30 x 1000 = 30000 packets. 0:00:30.852318 1000 qps

bvuntu% sudo python myexample.py 1000 60 2>/dev/null
2015-07-07 15:08:27.892227
60 x 1000 = 60000 packets. 0:00:53.811380 1132 qps

result_dnsperf.txt

bvuntu% ./dnsperf -s 127.0.0.1 -d /tmp/list -l 10            
DNS Performance Testing Tool
Nominum Version 2.0.0.0

[Status] Command line: dnsperf -s 127.0.0.1 -d /tmp/list -l 10
[Status] Sending queries (to 127.0.0.1)
[Status] Started at: Tue Jul  7 14:34:27 2015
[Status] Stopping after 10.000000 seconds
[Status] Testing complete (time limit)

Statistics:

  Queries sent:         1023468
  Queries completed:    1023468 (100.00%)
  Queries lost:         0 (0.00%)

  Response codes:       NOERROR 1023468 (100.00%)
  Average packet size:  request 27, response 43
  Run time (s):         10.000046
  Queries per second:   102346.329207

  Average Latency (s):  0.000281 (min 0.000000, max 0.015195)
  Latency StdDev (s):   0.000412