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import asyncio
from electrum.ecc import ECPrivkey
from electrum.lnutil import LNPeerAddr
from electrum.lntransport import LNResponderTransport, LNTransport
from . import ElectrumTestCase
from .test_bitcoin import needs_test_with_all_chacha20_implementations
class TestLNTransport(ElectrumTestCase):
@needs_test_with_all_chacha20_implementations
def test_responder(self):
# local static
ls_priv=bytes.fromhex('2121212121212121212121212121212121212121212121212121212121212121')
# ephemeral
e_priv=bytes.fromhex('2222222222222222222222222222222222222222222222222222222222222222')
class Writer:
def __init__(self):
self.state = 0
def write(self, data):
assert self.state == 0
self.state += 1
assert len(data) == 50
class Reader:
def __init__(self):
self.state = 0
async def read(self, num_bytes):
assert self.state in (0, 1)
self.state += 1
if self.state-1 == 0:
assert num_bytes == 50
return bytes.fromhex('00036360e856310ce5d294e8be33fc807077dc56ac80d95d9cd4ddbd21325eff73f70df6086551151f58b8afe6c195782c6a')
elif self.state-1 == 1:
assert num_bytes == 66
return bytes.fromhex('00b9e3a702e93e3a9948c2ed6e5fd7590a6e1c3a0344cfc9d5b57357049aa22355361aa02e55a8fc28fef5bd6d71ad0c38228dc68b1c466263b47fdf31e560e139ba')
transport = LNResponderTransport(ls_priv, Reader(), Writer())
asyncio.get_event_loop().run_until_complete(transport.handshake(epriv=e_priv))
@needs_test_with_all_chacha20_implementations
def test_loop(self):
loop = asyncio.get_event_loop()
responder_shaked = asyncio.Event()
server_shaked = asyncio.Event()
responder_key = ECPrivkey.generate_random_key()
initiator_key = ECPrivkey.generate_random_key()
async def cb(reader, writer):
t = LNResponderTransport(responder_key.get_secret_bytes(), reader, writer)
self.assertEqual(await t.handshake(), initiator_key.get_public_key_bytes())
t.send_bytes(b'hello from server')
self.assertEqual(await t.read_messages().__anext__(), b'hello from client')
responder_shaked.set()
server_future = asyncio.ensure_future(asyncio.start_server(cb, '127.0.0.1', 42898))
loop.run_until_complete(server_future)
server = server_future.result() # type: asyncio.Server
async def connect():
peer_addr = LNPeerAddr('127.0.0.1', 42898, responder_key.get_public_key_bytes())
t = LNTransport(initiator_key.get_secret_bytes(), peer_addr, proxy=None)
await t.handshake()
t.send_bytes(b'hello from client')
self.assertEqual(await t.read_messages().__anext__(), b'hello from server')
server_shaked.set()
try:
connect_future = asyncio.ensure_future(connect())
loop.run_until_complete(responder_shaked.wait())
loop.run_until_complete(server_shaked.wait())
finally:
server.close()
loop.run_until_complete(server.wait_closed())