def create_peers(ip1="127.0.0.1", ip2="127.0.0.2"):
peer1 = BitcoinPeerProtocol(MAGIC_HEADER)
peer2 = BitcoinPeerProtocol(MAGIC_HEADER)
pt1 = PeerTransport(peer2.data_received, (ip2, 6111))
pt2 = PeerTransport(peer1.data_received, (ip1, 6111))
peer1.writ_data = pt1.writ_data
peer2.writ_data = pt2.writ_data
# connect them
peer1.connection_made(pt1)
peer2.connection_made(pt2)
return peer1, peer2
