Bitcoin node info without RPC access

bitcoin_node_info.py

#!/usr/bin/env python3
#
# don't require rpc auth.
#
# requirements:
#  sudo apt-get install libssl-dev
#  pip install python-bitcoinlib
# docs:
#  https://github.com/petertodd/python-bitcoinlib
# usage:
#   ./bitcoin_node_info.py <hostname>

import os, sys, socket, json
from bitcoin.messages import msg_version

server_ip = sys.argv[1]
server_port = 8333

s = socket.socket()

s.connect( (server_ip, server_port) )

msg = msg_version()

s.send( msg.to_bytes() )

ret = msg_version.from_bytes(s.recv(1924))

s.close()

listret = str(ret).split()

# print(ret)
# print(listret)
print(json.dumps(listret, indent = 2))