twisterp2pnetworkbittorrentblockchainipv6microbloggingsocial-networkdhtdecentralizedtwister-ipv6twister-coretwisterarmyp2p-networktwister-server
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
57 lines
1.1 KiB
57 lines
1.1 KiB
11 years ago
|
#/bin/python
|
||
|
|
|
||
|
|
import os
|
||
|
|
import sys
|
||
|
|
|
||
|
|
def num_ids(bits, total_bits):
|
||
|
|
|
||
|
|
if total_bits == 32:
|
||
|
|
bit_dec = 2
|
||
|
|
else:
|
||
|
|
bit_dec = 1
|
||
|
|
|
||
|
|
num_used = 7;
|
||
|
|
ret = 3
|
||
|
|
|
||
|
|
while bits > 0:
|
||
|
|
ret += min(num_used, bits)
|
||
|
|
num_used -= bit_dec
|
||
|
|
if num_used < 0: num_used = 0
|
||
|
|
bits -= 8
|
||
|
|
|
||
|
|
return 1 << ret
|
||
|
|
|
||
|
|
f = open('ip_id_v4.dat', 'w+')
|
||
|
|
for i in range(0, 33):
|
||
|
|
print >>f, '%d\t%d\t%d' % (i, num_ids(i, 32), 1 << i)
|
||
|
|
f.close()
|
||
|
|
|
||
|
|
f = open('ip_id_v6.dat', 'w+')
|
||
|
|
for i in range(0, 65):
|
||
|
|
print >>f, '%d\t%d\t%d' % (i, num_ids(i, 64), 1 << i)
|
||
|
|
f.close()
|
||
|
|
|
||
|
|
f = open('ip_id.gnuplot', 'w+')
|
||
|
|
|
||
|
|
f.write('''
|
||
|
|
set term png size 600,300
|
||
|
|
set output "ip_id_v4.png"
|
||
|
|
set logscale y
|
||
|
|
set title "Number of possible node IDs"
|
||
|
|
set ylabel "possible node IDs"
|
||
|
|
set xlabel "bits controlled in IPv4"
|
||
|
|
set xtics 4
|
||
|
|
set grid
|
||
|
|
plot "ip_id_v4.dat" using 1:2 title "octet-wise modulus" with lines, \
|
||
|
|
"ip_id_v4.dat" using 1:3 title "hash of IP" with lines
|
||
|
|
|
||
|
|
set output "ip_id_v6.png"
|
||
|
|
set title "Number of possible node IDs"
|
||
|
|
set xlabel "bits controlled in IPv6"
|
||
|
|
plot "ip_id_v6.dat" using 1:2 title "octet-wise modulus" with lines, \
|
||
|
|
"ip_id_v6.dat" using 1:3 title "hash of IP" with lines
|
||
|
|
''')
|
||
|
|
f.close()
|
||
|
|
os.system('gnuplot ip_id.gnuplot')
|
||
|
|
|