py-libp2p/libp2p/__init__.py

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import asyncio
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import multiaddr
from Crypto.PublicKey import RSA
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from .peer.peerstore import PeerStore
from .peer.id import id_from_public_key
from .network.swarm import Swarm
from .host.basic_host import BasicHost
from .transport.upgrader import TransportUpgrader
from .transport.tcp.tcp import TCP
async def cleanup_done_tasks():
while True:
for task in asyncio.all_tasks():
if task.done():
await task
# Need not run often
# Some sleep necessary to context switch
await asyncio.sleep(3)
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async def new_node(
id_opt=None, transport_opt=None,
muxer_opt=None, sec_opt=None, peerstore=None):
if id_opt is None:
new_key = RSA.generate(2048, e=65537)
id_opt = id_from_public_key(new_key.publickey())
# private_key = new_key.exportKey("PEM")
transport_opt = transport_opt or ["/ip4/127.0.0.1/tcp/8001"]
transport_opt = [multiaddr.Multiaddr(t) for t in transport_opt]
muxer_opt = muxer_opt or ["mplex/6.7.0"]
sec_opt = sec_opt or ["secio"]
peerstore = peerstore or PeerStore()
upgrader = TransportUpgrader(sec_opt, transport_opt)
swarm = Swarm(id_opt, peerstore, upgrader)
tcp = TCP()
swarm.add_transport(tcp)
await swarm.listen(transport_opt[0])
# TODO enable support for other host type
# TODO routing unimplemented
host = BasicHost(swarm)
# Kick off cleanup job
asyncio.ensure_future(cleanup_done_tasks())
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return host