bt_client.py

import socket
import struct

def ip2long(ip):
    packedIP = socket.inet_aton(ip)
    return struct.unpack("!I", packedIP)[0]

# Handshake
message = struct.pack('!qii', 0x41727101980, 0, 1)
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) # UDP
sock.sendto(message, ('31.172.63.226', 80))
data_raw1 = sock.recvfrom(16)
_, _, connection_id = struct.unpack('!iiq', data_raw1[0])
message = struct.pack(
    '!qii20s20sqqqIIIiHH',
    connection_id,
    1,
    1,
    'd4ade1a3d935d64603dd5f835ff977d9236a2c59'.decode('hex'),
    'jngslkvmekrgmal325rw',
    0,
    115213797,
    0,
    0,
    ip2long('95.211.93.141'),
    1,
    -1,
    51413,
    0)
sock.sendto(message, ('31.172.63.226', 80))
print 'sent'
data_raw2 = sock.recvfrom(1000)
length = len(data_raw2[0])
times = (length - 20) / 6
data2 = struct.unpack('!iiiii' + ('iH' * times), data_raw2[0])
ips = data2[5:]
for i in range(0, len(ips), 2):
    ip = ips[i]
    port = ips[i+1]
    ip_str = socket.inet_ntoa(struct.pack('!i', ip))
    print ip_str