#basic python UDP script #for testing only import socket import random UDP_IP = "127.0.0.1" UDP_PORT = 5004 sock = socket.socket(socket.AF_INET, # Internet socket.SOCK_DGRAM) # UDP sock.bind((UDP_IP, UDP_PORT)) #our client_id client_id = str(''.join(random.choice("abcdefghijklmnopqrstuvwxyz") for x in range(32))) print client_id a = 1; #send ping request to our DHT on localhost. sock.sendto("0012345678".decode("hex") + client_id, ('127.0.0.1', 33445)) #print all packets received and respond to ping requests properly while True: data, addr = sock.recvfrom(1024) # buffer size is 1024 bytes print "received message:", data.encode('hex'), " From:", addr #if we receive a ping request. print data[0].encode('hex') if data[0] == "00".decode('hex'): print "Sending ping resp" sock.sendto("01".decode('hex') + data[1:5] + client_id, addr) #if we receive a get_nodes request. if data[0] == "02".decode('hex'): print "Sending getn resp" #send send nodes packet with a couple 127.0.0.1 ips and ports. #127.0.0.1:5000, 127.0.0.1:5001, 127.0.0.1:5002 sock.sendto("03".decode('hex') + data[1:5] + client_id + ("HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH" + "7F00000113880000".decode('hex') + "HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH" + "7F00000113890000".decode('hex') + "HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH" + "7F000001138A0000".decode('hex')), addr) if data[0] == "10".decode('hex'): print "Sending handshake resp" sock.sendto("10".decode('hex') + data[1:5] + client_id[:4], addr) if data[0] == "11".decode('hex'): print "Sending SYNC resp" a+=1 sock.sendto("11".decode('hex') + chr(a) + data[1:9], addr)