Browse Source

Update seed IPs, based on bitcoin.sipa.be crawler data

tags/v0.15.1
Pieter Wuille 6 years ago
parent
commit
be22b3da1d
4 changed files with 1123 additions and 1217 deletions
  1. 4
    7
      contrib/seeds/README.md
  2. 104
    18
      contrib/seeds/makeseeds.py
  3. 513
    602
      share/seeds/nodes_main.txt
  4. 502
    590
      src/chainparamsseeds.h

+ 4
- 7
contrib/seeds/README.md View File

@@ -1,11 +1,8 @@
### Seeds ###

Utility to generate the pnSeed[] array that is compiled into the client
(see [src/net.cpp](/src/net.cpp)).
Utility to generate the seeds.txt list that is compiled into the client
(see [src/chainparamsseeds.h](/src/chainparamsseeds.h) and [share/seeds](/share/seeds)).

The 600 seeds compiled into the 0.8 release were created from sipa's DNS seed data, like this:
The 512 seeds compiled into the 0.10 release were created from sipa's DNS seed data, like this:

curl -s http://bitcoin.sipa.be/seeds.txt | head -1000 | makeseeds.py

The input to makeseeds.py is assumed to be approximately sorted from most-reliable to least-reliable,
with IP:port first on each line (lines that don't match IPv4:port are ignored).
curl -s http://bitcoin.sipa.be/seeds.txt | makeseeds.py

+ 104
- 18
contrib/seeds/makeseeds.py View File

@@ -1,32 +1,118 @@
#!/usr/bin/env python
#
# Generate pnSeed[] from Pieter's DNS seeder
# Generate seeds.txt from Pieter's DNS seeder
#

NSEEDS=600
NSEEDS=512

MAX_SEEDS_PER_ASN=2

MIN_BLOCKS = 337600

# These are hosts that have been observed to be behaving strangely (e.g.
# aggressively connecting to every node).
SUSPICIOUS_HOSTS = set([
"130.211.129.106", "178.63.107.226",
"83.81.130.26", "88.198.17.7", "148.251.238.178", "176.9.46.6",
"54.173.72.127", "54.174.10.182", "54.183.64.54", "54.194.231.211",
"54.66.214.167", "54.66.220.137", "54.67.33.14", "54.77.251.214",
"54.94.195.96", "54.94.200.247"
])

import re
import sys
from subprocess import check_output
import dns.resolver

PATTERN_IPV4 = re.compile(r"^((\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})):8333$")
PATTERN_AGENT = re.compile(r"^(\/Satoshi:0.8.6\/|\/Satoshi:0.9.(2|3)\/|\/Satoshi:0.10.\d{1,2}\/)$")

def parseline(line):
sline = line.split()
if len(sline) < 11:
return None
# Match only IPv4
m = PATTERN_IPV4.match(sline[0])
if m is None:
return None
# Do IPv4 sanity check
ip = 0
for i in range(0,4):
if int(m.group(i+2)) < 0 or int(m.group(i+2)) > 255:
return None
ip = ip + (int(m.group(i+2)) << (8*(3-i)))
if ip == 0:
return None
# Skip bad results.
if sline[1] == 0:
return None
# Extract uptime %.
uptime30 = float(sline[7][:-1])
# Extract Unix timestamp of last success.
lastsuccess = int(sline[2])
# Extract protocol version.
version = int(sline[10])
# Extract user agent.
agent = sline[11][1:-1]
# Extract service flags.
service = int(sline[9], 16)
# Extract blocks.
blocks = int(sline[8])
# Construct result.
return {
'ip': m.group(1),
'ipnum': ip,
'uptime': uptime30,
'lastsuccess': lastsuccess,
'version': version,
'agent': agent,
'service': service,
'blocks': blocks,
}

# Based on Greg Maxwell's seed_filter.py
def filterbyasn(ips, max_per_asn, max_total):
result = []
asn_count = {}
for ip in ips:
if len(result) == max_total:
break
try:
asn = int([x.to_text() for x in dns.resolver.query('.'.join(reversed(ip['ip'].split('.'))) + '.origin.asn.cymru.com', 'TXT').response.answer][0].split('\"')[1].split(' ')[0])
if asn not in asn_count:
asn_count[asn] = 0
if asn_count[asn] == max_per_asn:
continue
asn_count[asn] += 1
result.append(ip)
except:
sys.stderr.write('ERR: Could not resolve ASN for "' + ip['ip'] + '"\n')
return result

def main():
lines = sys.stdin.readlines()
ips = [parseline(line) for line in lines]

# Skip entries with valid IPv4 address.
ips = [ip for ip in ips if ip is not None]
# Skip entries from suspicious hosts.
ips = [ip for ip in ips if ip['ip'] not in SUSPICIOUS_HOSTS]
# Enforce minimal number of blocks.
ips = [ip for ip in ips if ip['blocks'] >= MIN_BLOCKS]
# Require service bit 1.
ips = [ip for ip in ips if (ip['service'] & 1) == 1]
# Require at least 50% 30-day uptime.
ips = [ip for ip in ips if ip['uptime'] > 50]
# Require a known and recent user agent.
ips = [ip for ip in ips if PATTERN_AGENT.match(ip['agent'])]
# Sort by availability (and use last success as tie breaker)
ips.sort(key=lambda x: (x['uptime'], x['lastsuccess'], x['ip']), reverse=True)
# Look up ASNs and limit results, both per ASN and globally.
ips = filterbyasn(ips, MAX_SEEDS_PER_ASN, NSEEDS)
# Sort the results by IP address (for deterministic output).
ips.sort(key=lambda x: (x['ipnum']))

ips = []
pattern = re.compile(r"^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3}):8333")
for line in lines:
m = pattern.match(line)
if m is None:
continue
ip = 0
for i in range(0,4):
ip = ip + (int(m.group(i+1)) << (8*(i)))
if ip == 0:
continue
ips.append(ip)

for row in range(0, min(NSEEDS,len(ips)), 8):
print " " + ", ".join([ "0x%08x"%i for i in ips[row:row+8] ]) + ","
for ip in ips:
print ip['ip']

if __name__ == '__main__':
main()

+ 513
- 602
share/seeds/nodes_main.txt
File diff suppressed because it is too large
View File


+ 502
- 590
src/chainparamsseeds.h
File diff suppressed because it is too large
View File


Loading…
Cancel
Save