def get_nodes_to_connect(self) -> Generator[Node, None, None]:
from evm.chains.ropsten import RopstenChain
from evm.chains.mainnet import MainnetChain
if self.network_id == MainnetChain.network_id:
yield Node(keys.PublicKey(decode_hex("1118980bf48b0a3640bdba04e0fe78b1add18e1cd99bf22d53daac1fd9972ad650df52176e7c7d89d1114cfef2bc23a2959aa54998a46afcf7d91809f0855082")), # noqa: E501
Address("52.74.57.123", 30303, 30303))
yield Node(keys.PublicKey(decode_hex("78de8a0916848093c73790ead81d1928bec737d565119932b98c6b100d944b7a95e94f847f689fc723399d2e31129d182f7ef3863f2b4c820abbf3ab2722344d")), # noqa: E501
Address("191.235.84.50", 30303, 30303))
yield Node(keys.PublicKey(decode_hex("ddd81193df80128880232fc1deb45f72746019839589eeb642d3d44efbb8b2dda2c1a46a348349964a6066f8afb016eb2a8c0f3c66f32fadf4370a236a4b5286")), # noqa: E501
Address("52.231.202.145", 30303, 30303))
yield Node(keys.PublicKey(decode_hex("3f1d12044546b76342d59d4a05532c14b85aa669704bfe1f864fe079415aa2c02d743e03218e57a33fb94523adb54032871a6c51b2cc5514cb7c7e35b3ed0a99")), # noqa: E501
Address("13.93.211.84", 30303, 30303))
elif self.network_id == RopstenChain.network_id:
yield Node(keys.PublicKey(decode_hex("88c2b24429a6f7683fbfd06874ae3f1e7c8b4a5ffb846e77c705ba02e2543789d66fc032b6606a8d8888eb6239a2abe5897ce83f78dcdcfcb027d6ea69aa6fe9")), # noqa: E501
Address("163.172.157.61", 30303, 30303))
yield Node(keys.PublicKey(decode_hex("a1ef9ba5550d5fac27f7cbd4e8d20a643ad75596f307c91cd6e7f85b548b8a6bf215cca436d6ee436d6135f9fe51398f8dd4c0bd6c6a0c332ccb41880f33ec12")), # noqa: E501
Address("51.15.218.125", 30303, 30303))
yield Node(keys.PublicKey(decode_hex("e80276aabb7682a4a659f4341c1199de79d91a2e500a6ee9bed16ed4ce927ba8d32ba5dea357739ffdf2c5bcc848d3064bb6f149f0b4249c1f7e53f8bf02bfc8")), # noqa: E501
Address("51.15.39.57", 30303, 30303))
yield Node(keys.PublicKey(decode_hex("584c0db89b00719e9e7b1b5c32a4a8942f379f4d5d66bb69f9c7fa97fa42f64974e7b057b35eb5a63fd7973af063f9a1d32d8c60dbb4854c64cb8ab385470258")), # noqa: E501
Address("51.15.35.2", 30303, 30303))
yield Node(keys.PublicKey(decode_hex("d40871fc3e11b2649700978e06acd68a24af54e603d4333faecb70926ca7df93baa0b7bf4e927fcad9a7c1c07f9b325b22f6d1730e728314d0e4e6523e5cebc2")), # noqa: E501
Address("51.15.132.235", 30303, 30303))
yield Node(keys.PublicKey(decode_hex("482484b9198530ee2e00db89791823244ca41dcd372242e2e1297dd06f6d8dd357603960c5ad9cc8dc15fcdf0e4edd06b7ad7db590e67a0b54f798c26581ebd7")), # noqa: E501
Address("51.15.75.138", 30303, 30303))
else:
raise ValueError("Unknown network_id: {}".format(self.network_id))
async def test_get_local_enr(manually_driven_discovery):
discovery = manually_driven_discovery
enr = await discovery.get_local_enr()
validate_node_enr(discovery.this_node, enr, sequence_number=1)
old_node = copy.copy(discovery.this_node)
# If our node's details change but an ENR refresh is not due yet, we'll get the ENR for the
# old node.
discovery.this_node.address.udp_port += 1
assert discovery._local_enr_next_refresh > time.monotonic()
enr = await discovery.get_local_enr()
validate_node_enr(old_node, enr, sequence_number=1)
# If a local ENR refresh is due, get_local_enr() will create a fresh ENR with a new sequence
# number.
discovery._local_enr_next_refresh = time.monotonic() - 1
enr = await discovery.get_local_enr()
validate_node_enr(discovery.this_node, enr, sequence_number=2)
# The new ENR will also be stored in our DB.
our_node = Node(discovery.enr_db.get_enr(discovery.this_node.id))
assert enr == our_node.enr
# And the next refresh time will be updated.
assert discovery._local_enr_next_refresh > time.monotonic()
async def test_bootstrap_nodes():
private_key = PrivateKeyFactory().to_bytes()
bootnode1 = ENRFactory(private_key=private_key)
bootnode2 = ENRFactory()
discovery = MockDiscoveryService([Node(bootnode1), Node(bootnode2)])
assert discovery.enr_db.get_enr(bootnode1.node_id) == bootnode1
assert discovery.enr_db.get_enr(bootnode2.node_id) == bootnode2
assert [node.enr for node in discovery.bootstrap_nodes] == [bootnode1, bootnode2]
# If our DB gets updated with a newer ENR of one of our bootnodes, the @bootstrap_nodes
# property will reflect that.
new_bootnode1 = ENRFactory(
private_key=private_key, sequence_number=bootnode1.sequence_number + 1)
discovery.enr_db.set_enr(new_bootnode1)
assert [node.enr for node in discovery.bootstrap_nodes] == [new_bootnode1, bootnode2]
async def test_shard_syncer(n_peers, connections):
cancel_token = CancelToken("canceltoken")
PeerTuple = collections.namedtuple("PeerTuple",
["node", "server", "syncer"])
peer_tuples = []
for i in range(n_peers):
private_key = keys.PrivateKey(pad32(int_to_big_endian(i + 1)))
port = get_open_port()
address = Address("127.0.0.1", port, port)
node = Node(private_key.public_key, address)
server = ShardingServer(private_key,
address,
network_id=9324090483,
min_peers=0,
peer_class=ShardingPeer)
asyncio.ensure_future(server.run())
peer_tuples.append(
PeerTuple(
node=node,
server=server,
syncer=server.syncer,
))
# connect peers to each other
await asyncio.gather(*[
peer_tuples[i].server.peer_pool._connect_to_nodes(
[peer_tuples[j].node]) for i, j in connections
])
for i, j in connections:
peer_remotes = [
peer.remote for peer in peer_tuples[i].server.peer_pool.peers
]
assert peer_tuples[j].node in peer_remotes
# let each node propose and check that collation appears at all other nodes
for proposer in peer_tuples:
collation = proposer.syncer.propose()
await asyncio.wait_for(asyncio.gather(*[
peer_tuple.syncer.collations_received_event.wait()
for peer_tuple in peer_tuples if peer_tuple != proposer
]),
timeout=10)
for peer_tuple in peer_tuples:
assert peer_tuple.syncer.shard.get_collation_by_hash(
collation.hash) == collation
# stop everything
cancel_token.trigger()
await asyncio.gather(
*[peer_tuple.server.cancel() for peer_tuple in peer_tuples])
await asyncio.gather(
*[peer_tuple.syncer.cancel() for peer_tuple in peer_tuples])
def test_node_constructor():
privkey = PrivateKeyFactory()
address = AddressFactory()
enr = ENRFactory(private_key=privkey.to_bytes(), address=address)
node = Node(enr)
assert node.id == keccak(privkey.public_key.to_bytes())
assert node.address == address
def _extract_nodes_from_payload(
sender: AddressAPI, payload: List[Tuple[str, bytes, bytes, bytes]],
logger: ExtendedDebugLogger) -> Iterator[NodeAPI]:
for item in payload:
ip, udp_port, tcp_port, node_id = item
address = Address.from_endpoint(ip, udp_port, tcp_port)
if check_relayed_addr(sender, address):
yield Node(keys.PublicKey(node_id), address)
else:
logger.debug("Skipping invalid address %s relayed by %s", address,
sender)
async def receive_handshake(self, reader: asyncio.StreamReader,
writer: asyncio.StreamWriter) -> None:
# Use reader to read the auth_init msg until EOF
msg = await reader.read(ENCRYPTED_AUTH_MSG_LEN)
# Use HandshakeResponder.decode_authentication(auth_init_message) on auth init msg
try:
ephem_pubkey, initiator_nonce, initiator_pubkey = decode_authentication(
msg, self.privkey)
# Try to decode as EIP8
except DecryptionError:
msg_size = big_endian_to_int(msg[:2])
remaining_bytes = msg_size - ENCRYPTED_AUTH_MSG_LEN + 2
msg += await reader.read(remaining_bytes)
ephem_pubkey, initiator_nonce, initiator_pubkey = decode_authentication(
msg, self.privkey)
# Get remote's address: IPv4 or IPv6
ip, port, *_ = writer.get_extra_info("peername")
remote_address = Address(ip, port)
# Create `HandshakeResponder(remote: kademlia.Node, privkey: datatypes.PrivateKey)` instance
initiator_remote = Node(initiator_pubkey, remote_address)
responder = HandshakeResponder(initiator_remote, self.privkey)
# Call `HandshakeResponder.create_auth_ack_message(nonce: bytes)` to create the reply
responder_nonce = secrets.token_bytes(HASH_LEN)
auth_ack_msg = responder.create_auth_ack_message(nonce=responder_nonce)
auth_ack_ciphertext = responder.encrypt_auth_ack_message(auth_ack_msg)
# Use the `writer` to send the reply to the remote
writer.write(auth_ack_ciphertext)
await writer.drain()
# Call `HandshakeResponder.derive_shared_secrets()` and use return values to create `Peer`
aes_secret, mac_secret, egress_mac, ingress_mac = responder.derive_secrets(
initiator_nonce=initiator_nonce,
responder_nonce=responder_nonce,
remote_ephemeral_pubkey=ephem_pubkey,
auth_init_ciphertext=msg,
auth_ack_ciphertext=auth_ack_ciphertext)
# Create and register peer in peer_pool
eth_peer = ETHPeer(remote=initiator_remote,
privkey=self.privkey,
reader=reader,
writer=writer,
aes_secret=aes_secret,
mac_secret=mac_secret,
egress_mac=egress_mac,
ingress_mac=ingress_mac,
chaindb=self.chaindb,
network_id=self.network_id)
self.peer_pool.add_peer(eth_peer)
def _make_node_with_enr_and_forkid(genesis_hash, head, vm_config):
fork_blocks = forkid.extract_fork_blocks(vm_config)
node_forkid = forkid.make_forkid(genesis_hash, head, fork_blocks)
ip = socket.inet_aton(IPAddressFactory.generate())
udp_port = 30304
enr = ENRFactory(
custom_kv_pairs={
b'eth': sedes.List([forkid.ForkID]).serialize([node_forkid]),
IP_V4_ADDRESS_ENR_KEY: ip,
UDP_PORT_ENR_KEY: udp_port,
TCP_PORT_ENR_KEY: udp_port,
})
return Node(enr)
async def test_lookup_and_maybe_update_enr_new_node():
discovery = MockDiscoveryService([])
privkey = PrivateKeyFactory()
address = AddressFactory()
# When looking up the ENR for a node we haven't heard about before, we'll create a stub ENR
# and add that into our DB.
enr = discovery.lookup_and_maybe_update_enr(privkey.public_key, address)
assert enr.sequence_number == 0
node = Node(enr)
assert node.pubkey == privkey.public_key
assert node.address == address
db_enr = discovery.enr_db.get_enr(node.id)
assert db_enr == enr
async def test_lookup_and_maybe_update_enr_existing_node_different_address():
discovery = MockDiscoveryService([])
privkey = PrivateKeyFactory()
address = AddressFactory()
# If the address given is different than the one we have in our DB, though, a stub ENR would
# be created and stored in our DB, replacing the existing one.
enr = ENRFactory(private_key=privkey.to_bytes(), address=address)
discovery.enr_db.set_enr(enr)
new_address = AddressFactory()
lookedup_enr = discovery.lookup_and_maybe_update_enr(privkey.public_key, new_address)
assert lookedup_enr != enr
assert lookedup_enr.public_key == enr.public_key
assert lookedup_enr.sequence_number == 0
assert Node(lookedup_enr).address == new_address
assert lookedup_enr == discovery.enr_db.get_enr(enr.node_id)
def test_node_constructor():
privkey = PrivateKeyFactory()
ip = socket.inet_aton(IPAddressFactory.generate())
udp_port = tcp_port = 30303
enr = ENRFactory(private_key=privkey.to_bytes(),
custom_kv_pairs={
IP_V4_ADDRESS_ENR_KEY: ip,
UDP_PORT_ENR_KEY: udp_port
})
node = Node(enr)
assert node.id == keccak(privkey.public_key.to_bytes())
assert node.address.ip_packed == ip
assert node.address.tcp_port == tcp_port
assert node.address.udp_port == udp_port
def __init__(self,
privkey: datatypes.PrivateKey,
address: AddressAPI,
bootstrap_nodes: Sequence[NodeAPI],
cancel_token: CancelToken) -> None:
self.privkey = privkey
self.address = address
self.bootstrap_nodes = bootstrap_nodes
self.this_node = Node(self.pubkey, address)
self.routing = RoutingTable(self.this_node)
self.topic_table = TopicTable(self.logger)
self.pong_callbacks = CallbackManager()
self.ping_callbacks = CallbackManager()
self.neighbours_callbacks = CallbackManager()
self.topic_nodes_callbacks = CallbackManager()
self.parity_pong_tokens: Dict[Hash32, Hash32] = {}
self.cancel_token = CancelToken('DiscoveryProtocol').chain(cancel_token)
def __init__(self, privkey: datatypes.PrivateKey, address: AddressAPI,
bootstrap_nodes: Sequence[NodeAPI], event_bus: EndpointAPI,
socket: trio.socket.SocketType) -> None:
self.privkey = privkey
self.address = address
self.bootstrap_nodes = bootstrap_nodes
self._event_bus = event_bus
self.this_node = Node(self.pubkey, address)
self.routing = RoutingTable(self.this_node)
self.pong_callbacks = CallbackManager()
self.ping_callbacks = CallbackManager()
self.neighbours_callbacks = CallbackManager()
self.parity_pong_tokens: Dict[Hash32, Hash32] = {}
if socket.family != trio.socket.AF_INET:
raise ValueError("Invalid socket family")
elif socket.type != trio.socket.SOCK_DGRAM:
raise ValueError("Invalid socket type")
self.socket = socket
async def receive(self, address: AddressAPI, message: bytes) -> None:
try:
remote_pubkey, cmd_id, payload, message_hash = _unpack_v4(message)
except DefectiveMessage as e:
self.logger.error('error unpacking message (%s) from %s: %s',
message, address, e)
return
try:
cmd = CMD_ID_MAP[cmd_id]
except KeyError:
self.logger.warning("Ignoring uknown msg type: %s; payload=%s",
cmd_id, payload)
return
self.logger.debug2("Received %s with payload: %s", cmd.name, payload)
node = Node(remote_pubkey, address)
handler = self._get_handler(cmd)
await handler(node, payload, message_hash)
async def test_fetch_enrs(nursery, manually_driven_discovery_pair):
alice, bob = manually_driven_discovery_pair
# Pretend that bob and alice have already bonded, otherwise bob will ignore alice's ENR
# request.
alice.node_db.set_last_pong_time(bob.this_node.id, int(time.monotonic()))
bob.node_db.set_last_pong_time(alice.this_node.id, int(time.monotonic()))
# Also add bob's node to alice's DB as when scheduling an ENR retrieval we only get the node ID
# and need to look it up in the DB.
alice.node_db.set_enr(bob.this_node.enr)
# This task will run in a loop consuming from the pending_enrs_consumer channel and requesting
# ENRs.
alice.manager.run_task(alice.fetch_enrs)
with trio.fail_after(1):
# Generate a new ENR for bob, because the old one alice already got when we manually added
# bob's node to her DB above.
bobs_new_enr = await bob._generate_local_enr(
bob.this_node.enr.sequence_number + 1)
bob.this_node = Node(bobs_new_enr)
# This feeds a request to retrieve Bob's ENR to fetch_enrs(), which spawns a background
# task to do it.
await alice.pending_enrs_producer.send(
(bob.this_node.id, bobs_new_enr.sequence_number))
# bob cosumes the ENR_REQUEST and replies with its own ENR
await bob.consume_datagram()
# alice consumes the ENR_RESPONSE, feeding the ENR to the background task started above.
await alice.consume_datagram()
# Now we need to wait a little bit here for that background task to pick it up and store
# it in our DB.
while True:
await trio.sleep(0.1)
try:
bob_enr = alice.node_db.get_enr(bob.this_node.id)
except KeyError:
continue
else:
break
assert bob_enr is not None
assert bob_enr == await bob.get_local_enr()
def receive(self, address: AddressAPI, message: bytes) -> None:
try:
remote_pubkey, cmd_id, payload, message_hash = _unpack_v4(message)
except DefectiveMessage as e:
self.logger.error('error unpacking message (%s) from %s: %s', message, address, e)
return
# As of discovery version 4, expiration is the last element for all packets, so
# we can validate that here, but if it changes we may have to do so on the
# handler methods.
expiration = rlp.sedes.big_endian_int.deserialize(payload[-1])
if time.time() > expiration:
self.logger.debug('received message already expired')
return
cmd = CMD_ID_MAP[cmd_id]
if len(payload) != cmd.elem_count:
self.logger.error('invalid %s payload: %s', cmd.name, payload)
return
node = Node(remote_pubkey, address)
handler = self._get_handler(cmd)
handler(node, payload, message_hash)
def __init__(
self,
privkey: datatypes.PrivateKey,
address: AddressAPI,
bootstrap_nodes: Sequence[NodeAPI],
event_bus: EndpointAPI,
socket: trio.socket.SocketType,
enr_field_providers: Sequence[ENR_FieldProvider] = tuple(),
) -> None:
self.privkey = privkey
self.address = address
self.bootstrap_nodes = bootstrap_nodes
self._event_bus = event_bus
self.this_node = Node(self.pubkey, address)
self.routing = RoutingTable(self.this_node)
self.enr_response_channels = ExpectedResponseChannels[Tuple[ENR,
Hash32]]()
self.pong_channels = ExpectedResponseChannels[Tuple[Hash32, int]]()
self.neighbours_channels = ExpectedResponseChannels[List[NodeAPI]]()
self.ping_channels = ExpectedResponseChannels[None]()
self.enr_field_providers = enr_field_providers
# FIXME: Use a persistent EnrDb implementation.
self._enr_db = MemoryEnrDb(default_identity_scheme_registry)
# FIXME: Use a concurrency-safe EnrDb implementation.
self._enr_db_lock = trio.Lock()
self._local_enr: ENR = None
self._local_enr_next_refresh: float = time.monotonic()
self._local_enr_lock = trio.Lock()
self.parity_pong_tokens: Dict[Hash32, Hash32] = {}
if socket.family != trio.socket.AF_INET:
raise ValueError("Invalid socket family")
elif socket.type != trio.socket.SOCK_DGRAM:
raise ValueError("Invalid socket type")
self.socket = socket
self.pending_enrs_producer, self.pending_enrs_consumer = trio.open_memory_channel[
Tuple[NodeAPI, int]](self._max_pending_enrs)
def get_open_port():
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(("", 0))
s.listen(1)
port = s.getsockname()[1]
s.close()
return port
port = get_open_port()
SERVER_ADDRESS = Address('127.0.0.1', udp_port=port, tcp_port=port)
INITIATOR_PUBKEY = keys.PrivateKey(eip8_values['initiator_private_key']).public_key
INITIATOR_ADDRESS = Address('127.0.0.1', get_open_port() + 1)
INITIATOR_REMOTE = Node(INITIATOR_PUBKEY, INITIATOR_ADDRESS)
@pytest.fixture
def server():
privkey = keys.PrivateKey(eip8_values['receiver_private_key'])
chaindb = ChainDB(MemoryDB())
server = Server(privkey, SERVER_ADDRESS, chaindb, [], 1)
return server
# FIXME: Instead of starting an actual server and send data over the wire, this test should create
# StreamReaders and StreamWriters and connect them directly, like in test_auth.py. That way we
# don't need those "strategically" placed sleep() calls.
@pytest.mark.asyncio
async def test_server_authenticates_incoming_connections(server, event_loop):
async def _receive_handshake(
self, reader: asyncio.StreamReader, writer: asyncio.StreamWriter) -> None:
msg = await self.wait(
reader.read(ENCRYPTED_AUTH_MSG_LEN),
timeout=REPLY_TIMEOUT)
peername = writer.get_extra_info("peername")
if peername is None:
socket = writer.get_extra_info("socket")
sockname = writer.get_extra_info("sockname")
raise HandshakeFailure(
"Received incoming connection with no remote information:"
f"socket={repr(socket)} sockname={sockname}"
)
ip, socket, *_ = peername
remote_address = Address(ip, socket)
self.logger.debug("Receiving handshake from %s", remote_address)
try:
ephem_pubkey, initiator_nonce, initiator_pubkey = decode_authentication(
msg, self.privkey)
except DecryptionError as non_eip8_err:
# Try to decode as EIP8
got_eip8 = True
msg_size = big_endian_to_int(msg[:2])
remaining_bytes = msg_size - ENCRYPTED_AUTH_MSG_LEN + 2
msg += await self.wait(
reader.read(remaining_bytes),
timeout=REPLY_TIMEOUT)
try:
ephem_pubkey, initiator_nonce, initiator_pubkey = decode_authentication(
msg, self.privkey)
except DecryptionError as eip8_err:
raise HandshakeFailure(
f"Failed to decrypt both EIP8 handshake: {eip8_err} and "
f"non-EIP8 handshake: {non_eip8_err}"
)
else:
got_eip8 = False
initiator_remote = Node(initiator_pubkey, remote_address)
responder = HandshakeResponder(initiator_remote, self.privkey, got_eip8, self.cancel_token)
responder_nonce = secrets.token_bytes(HASH_LEN)
auth_ack_msg = responder.create_auth_ack_message(responder_nonce)
auth_ack_ciphertext = responder.encrypt_auth_ack_message(auth_ack_msg)
# Use the `writer` to send the reply to the remote
writer.write(auth_ack_ciphertext)
await self.wait(writer.drain())
# Call `HandshakeResponder.derive_shared_secrets()` and use return values to create `Peer`
aes_secret, mac_secret, egress_mac, ingress_mac = responder.derive_secrets(
initiator_nonce=initiator_nonce,
responder_nonce=responder_nonce,
remote_ephemeral_pubkey=ephem_pubkey,
auth_init_ciphertext=msg,
auth_ack_ciphertext=auth_ack_ciphertext
)
transport = Transport(
remote=initiator_remote,
private_key=self.privkey,
reader=reader,
writer=writer,
aes_secret=aes_secret,
mac_secret=mac_secret,
egress_mac=egress_mac,
ingress_mac=ingress_mac,
)
# Create and register peer in peer_pool
peer = self.peer_pool.get_peer_factory().create_peer(
transport=transport,
inbound=True,
)
if self.peer_pool.is_full:
await peer.disconnect(DisconnectReason.too_many_peers)
return
elif not self.peer_pool.is_valid_connection_candidate(peer.remote):
await peer.disconnect(DisconnectReason.useless_peer)
return
total_peers = len(self.peer_pool)
inbound_peer_count = len([
peer
for peer
in self.peer_pool.connected_nodes.values()
if peer.inbound
])
if total_peers > 1 and inbound_peer_count / total_peers > DIAL_IN_OUT_RATIO:
# make sure to have at least 1/4 outbound connections
await peer.disconnect(DisconnectReason.too_many_peers)
else:
# We use self.wait() here as a workaround for
# https://github.com/ethereum/py-evm/issues/670.
await self.wait(self.do_handshake(peer))
async def test_request_enr(nursery, manually_driven_discovery_pair):
alice, bob = manually_driven_discovery_pair
# Pretend that bob and alice have already bonded, otherwise bob will ignore alice's ENR
# request.
bob._last_pong_at[alice.this_node.id] = int(time.monotonic())
# Add a copy of Bob's node with a stub ENR to alice's RT as later we're going to check that it
# gets updated with the received ENR.
bobs_node_with_stub_enr = Node.from_pubkey_and_addr(
bob.this_node.pubkey, bob.this_node.address)
alice._last_pong_at[bob.this_node.id] = int(time.monotonic())
alice.enr_db.delete_enr(bobs_node_with_stub_enr.id)
alice.enr_db.set_enr(bobs_node_with_stub_enr.enr)
assert alice.enr_db.get_enr(bobs_node_with_stub_enr.id).sequence_number == 0
received_enr = None
got_enr = trio.Event()
async def fetch_enr(event):
nonlocal received_enr
received_enr = await alice.request_enr(bobs_node_with_stub_enr)
event.set()
# Start a task in the background that requests an ENR to bob and then waits for it.
nursery.start_soon(fetch_enr, got_enr)
# Bob will now consume one datagram containing the ENR_REQUEST from alice, and as part of that
# will send an ENR_RESPONSE, which will then be consumed by alice, and as part of that it will
# be fed into the request_enr() task we're running the background.
with trio.fail_after(0.5):
await bob.consume_datagram()
await alice.consume_datagram()
with trio.fail_after(1):
await got_enr.wait()
validate_node_enr(bob.this_node, received_enr, sequence_number=1)
assert alice.enr_db.get_enr(bob.this_node.id) == received_enr
# Now, if Bob later sends us a new ENR with no endpoint information, we'll evict him from both
# our DB and RT.
sequence_number = bob.this_node.enr.sequence_number + 1
new_unsigned_enr = UnsignedENR(
sequence_number,
kv_pairs={
IDENTITY_SCHEME_ENR_KEY: V4IdentityScheme.id,
V4IdentityScheme.public_key_enr_key: bob.pubkey.to_compressed_bytes(),
}
)
bob.this_node = Node(new_unsigned_enr.to_signed_enr(bob.privkey.to_bytes()))
received_enr = None
got_new_enr = trio.Event()
nursery.start_soon(fetch_enr, got_new_enr)
with trio.fail_after(0.5):
await bob.consume_datagram()
await alice.consume_datagram()
with trio.fail_after(1):
await got_new_enr.wait()
assert Node(received_enr).address is None
assert not alice.routing._contains(bob.this_node.id, include_replacement_cache=True)
with pytest.raises(KeyError):
alice.enr_db.get_enr(bob.this_node.id)
def get_nodes_to_connect(self) -> Generator[Node, None, None]:
from evm.chains.ropsten import RopstenChain
from evm.chains.mainnet import MainnetChain
if self.network_id == MainnetChain.network_id:
nodes = [
Node(keys.PublicKey(decode_hex("1118980bf48b0a3640bdba04e0fe78b1add18e1cd99bf22d53daac1fd9972ad650df52176e7c7d89d1114cfef2bc23a2959aa54998a46afcf7d91809f0855082")), # noqa: E501
Address("52.74.57.123", 30303, 30303)),
Node(keys.PublicKey(decode_hex("78de8a0916848093c73790ead81d1928bec737d565119932b98c6b100d944b7a95e94f847f689fc723399d2e31129d182f7ef3863f2b4c820abbf3ab2722344d")), # noqa: E501
Address("191.235.84.50", 30303, 30303)),
Node(keys.PublicKey(decode_hex("ddd81193df80128880232fc1deb45f72746019839589eeb642d3d44efbb8b2dda2c1a46a348349964a6066f8afb016eb2a8c0f3c66f32fadf4370a236a4b5286")), # noqa: E501
Address("52.231.202.145", 30303, 30303)),
Node(keys.PublicKey(decode_hex("3f1d12044546b76342d59d4a05532c14b85aa669704bfe1f864fe079415aa2c02d743e03218e57a33fb94523adb54032871a6c51b2cc5514cb7c7e35b3ed0a99")), # noqa: E501
Address("13.93.211.84", 30303, 30303)),
]
elif self.network_id == RopstenChain.network_id:
nodes = [
Node(keys.PublicKey(decode_hex("60ce95dc5b6873e1c53897815496c28132fa50a1227935c58fbffc30a25bf9df68594f7bdc63b1d33c2911c96013b5b058dcfc9184a78082e9af5ace05fe5486")), # noqa: E501
Address("79.98.29.93", 30303, 30303)),
Node(keys.PublicKey(decode_hex("a147a3adde1daddc0d86f44f1a76404914e44cee018c26d49248142d4dc8a9fb0e7dd14b5153df7e60f23b037922ae1f33b8f318844ef8d2b0453b9ab614d70d")), # noqa: E501
Address("72.36.89.11", 30303, 30303)),
Node(keys.PublicKey(decode_hex("d8714127db3c10560a2463c557bbe509c99969078159c69f9ce4f71c2cd1837bcd33db3b9c3c3e88c971b4604bbffa390a0a7f53fc37f122e2e6e0022c059dfd")), # noqa: E501
Address("51.15.217.106", 30303, 30303)),
Node(keys.PublicKey(decode_hex("efc75f109d91cdebc62f33be992ca86fce2637044d49a954a8bdceb439b1239afda32e642456e9dfd759af5b440ef4d8761b9bda887e2200001c5f3ab2614043")), # noqa: E501
Address("34.228.166.142", 30303, 30303)),
Node(keys.PublicKey(decode_hex("c8b9ec645cd7fe570bc73740579064c528771338c31610f44d160d2ae63fd00699caa163f84359ab268d4a0aed8ead66d7295be5e9c08b0ec85b0198273bae1f")), # noqa: E501
Address("178.62.246.6", 30303, 30303)),
Node(keys.PublicKey(decode_hex("7a34c02d5ef9de43475580cbb88fb492afb2858cfc45f58cf5c7088ceeded5f58e65be769b79c31c5ae1f012c99b3e9f2ea9ef11764d553544171237a691493b")), # noqa: E501
Address("35.227.38.243", 30303, 30303)),
Node(keys.PublicKey(decode_hex("bbb3ad8be9684fa1d67ac057d18f7357dd236dc01a806fef6977ac9a259b352c00169d092c50475b80aed9e28eff12d2038e97971e0be3b934b366e86b59a723")), # noqa: E501
Address("81.169.153.213", 30303, 30303)),
Node(keys.PublicKey(decode_hex("30b7ab30a01c124a6cceca36863ece12c4f5fa68e3ba9b0b51407ccc002eeed3b3102d20a88f1c1d3c3154e2449317b8ef95090e77b312d5cc39354f86d5d606")), # noqa: E501
Address("52.176.7.10", 30303, 30303)),
Node(keys.PublicKey(decode_hex("02508da84b37a1b7f19f77268e5b69acc9e9ab6989f8e5f2f8440e025e633e4277019b91884e46821414724e790994a502892144fc1333487ceb5a6ce7866a46")), # noqa: E501
Address("54.175.255.230", 30303, 30303)),
Node(keys.PublicKey(decode_hex("0eec3472a46f0b637045e41f923ce1d4a585cd83c1c7418b183c46443a0df7405d020f0a61891b2deef9de35284a0ad7d609db6d30d487dbfef72f7728d09ca9")), # noqa: E501
Address("181.168.193.197", 30303, 30303)),
Node(keys.PublicKey(decode_hex("643c31104d497e3d4cd2460ff0dbb1fb9a6140c8bb0fca66159bbf177d41aefd477091c866494efd3f1f59a0652c93ab2f7bb09034ed5ab9f2c5c6841aef8d94")), # noqa: E501
Address("34.198.237.7", 30303, 30303)),
]
else:
raise ValueError("Unknown network_id: {}".format(self.network_id))
random.shuffle(nodes)
for node in nodes:
yield node
async def _receive_handshake(self, reader: asyncio.StreamReader,
writer: asyncio.StreamWriter) -> None:
msg = await self.wait(reader.read(ENCRYPTED_AUTH_MSG_LEN),
timeout=REPLY_TIMEOUT)
ip, socket, *_ = writer.get_extra_info("peername")
remote_address = Address(ip, socket)
self.logger.debug("Receiving handshake from %s", remote_address)
got_eip8 = False
try:
ephem_pubkey, initiator_nonce, initiator_pubkey = decode_authentication(
msg, self.privkey)
except DecryptionError:
# Try to decode as EIP8
got_eip8 = True
msg_size = big_endian_to_int(msg[:2])
remaining_bytes = msg_size - ENCRYPTED_AUTH_MSG_LEN + 2
msg += await self.wait(reader.read(remaining_bytes),
timeout=REPLY_TIMEOUT)
try:
ephem_pubkey, initiator_nonce, initiator_pubkey = decode_authentication(
msg, self.privkey)
except DecryptionError as e:
self.logger.debug("Failed to decrypt handshake: %s", e)
return
initiator_remote = Node(initiator_pubkey, remote_address)
responder = HandshakeResponder(initiator_remote, self.privkey,
got_eip8, self.cancel_token)
responder_nonce = secrets.token_bytes(HASH_LEN)
auth_ack_msg = responder.create_auth_ack_message(responder_nonce)
auth_ack_ciphertext = responder.encrypt_auth_ack_message(auth_ack_msg)
# Use the `writer` to send the reply to the remote
writer.write(auth_ack_ciphertext)
await self.wait(writer.drain())
# Call `HandshakeResponder.derive_shared_secrets()` and use return values to create `Peer`
aes_secret, mac_secret, egress_mac, ingress_mac = responder.derive_secrets(
initiator_nonce=initiator_nonce,
responder_nonce=responder_nonce,
remote_ephemeral_pubkey=ephem_pubkey,
auth_init_ciphertext=msg,
auth_ack_ciphertext=auth_ack_ciphertext)
# Create and register peer in peer_pool
peer = self.peer_class(
remote=initiator_remote,
privkey=self.privkey,
reader=reader,
writer=writer,
aes_secret=aes_secret,
mac_secret=mac_secret,
egress_mac=egress_mac,
ingress_mac=ingress_mac,
headerdb=self.headerdb,
network_id=self.network_id,
inbound=True,
)
if self.peer_pool.is_full:
peer.disconnect(DisconnectReason.too_many_peers)
else:
# We use self.wait() here as a workaround for
# https://github.com/ethereum/py-evm/issues/670.
await self.wait(self.do_handshake(peer))
def _test():
"""
Create a Peer instance connected to a local geth instance and log messages exchanged with it.
Use the following command line to run geth:
./build/bin/geth -vmodule p2p=4,p2p/discv5=0,eth/*=0 \
-nodekeyhex 45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8 \
-testnet -lightserv 90
"""
import argparse
import signal
from evm.chains.ropsten import RopstenChain, ROPSTEN_GENESIS_HEADER
from evm.db.backends.memory import MemoryDB
from tests.p2p.integration_test_helpers import FakeAsyncChainDB
logging.basicConfig(level=logging.DEBUG, format='%(asctime)s %(levelname)s: %(message)s')
# The default remoteid can be used if you pass nodekeyhex as above to geth.
nodekey = keys.PrivateKey(decode_hex(
"45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8"))
remoteid = nodekey.public_key.to_hex()
parser = argparse.ArgumentParser()
parser.add_argument('-remoteid', type=str, default=remoteid)
parser.add_argument('-light', action='store_true', help="Connect as a light node")
args = parser.parse_args()
peer_class = ETHPeer # type: ignore
if args.light:
peer_class = LESPeer # type: ignore
remote = Node(
keys.PublicKey(decode_hex(args.remoteid)),
Address('127.0.0.1', 30303, 30303))
chaindb = FakeAsyncChainDB(MemoryDB())
chaindb.persist_header(ROPSTEN_GENESIS_HEADER)
network_id = RopstenChain.network_id
loop = asyncio.get_event_loop()
peer = loop.run_until_complete(
asyncio.wait_for(
handshake(remote, ecies.generate_privkey(), peer_class, chaindb, network_id),
HANDSHAKE_TIMEOUT))
async def request_stuff():
# Request some stuff from ropsten's block 2440319
# (https://ropsten.etherscan.io/block/2440319), just as a basic test.
nonlocal peer
block_hash = decode_hex(
'0x59af08ab31822c992bb3dad92ddb68d820aa4c69e9560f07081fa53f1009b152')
if peer_class == ETHPeer:
peer = cast(ETHPeer, peer)
peer.sub_proto.send_get_block_headers(block_hash, 1)
peer.sub_proto.send_get_block_bodies([block_hash])
peer.sub_proto.send_get_receipts([block_hash])
else:
peer = cast(LESPeer, peer)
request_id = 1
peer.sub_proto.send_get_block_headers(block_hash, 1, request_id)
peer.sub_proto.send_get_block_bodies([block_hash], request_id + 1)
peer.sub_proto.send_get_receipts(block_hash, request_id + 2)
for sig in [signal.SIGINT, signal.SIGTERM]:
loop.add_signal_handler(sig, peer.cancel_token.trigger)
asyncio.ensure_future(request_stuff())
loop.run_until_complete(peer.run())
loop.close()
def get_nodes_to_connect(self) -> Generator[Node, None, None]:
from evm.chains.ropsten import RopstenChain
from evm.chains.mainnet import MainnetChain
if self.network_id == MainnetChain.network_id:
nodes = [
Node(keys.PublicKey(decode_hex("1118980bf48b0a3640bdba04e0fe78b1add18e1cd99bf22d53daac1fd9972ad650df52176e7c7d89d1114cfef2bc23a2959aa54998a46afcf7d91809f0855082")), # noqa: E501
Address("52.74.57.123", 30303, 30303)),
Node(keys.PublicKey(decode_hex("78de8a0916848093c73790ead81d1928bec737d565119932b98c6b100d944b7a95e94f847f689fc723399d2e31129d182f7ef3863f2b4c820abbf3ab2722344d")), # noqa: E501
Address("191.235.84.50", 30303, 30303)),
Node(keys.PublicKey(decode_hex("ddd81193df80128880232fc1deb45f72746019839589eeb642d3d44efbb8b2dda2c1a46a348349964a6066f8afb016eb2a8c0f3c66f32fadf4370a236a4b5286")), # noqa: E501
Address("52.231.202.145", 30303, 30303)),
Node(keys.PublicKey(decode_hex("3f1d12044546b76342d59d4a05532c14b85aa669704bfe1f864fe079415aa2c02d743e03218e57a33fb94523adb54032871a6c51b2cc5514cb7c7e35b3ed0a99")), # noqa: E501
Address("13.93.211.84", 30303, 30303)),
]
elif self.network_id == RopstenChain.network_id:
nodes = [
Node(keys.PublicKey(decode_hex("c8b9ec645cd7fe570bc73740579064c528771338c31610f44d160d2ae63fd00699caa163f84359ab268d4a0aed8ead66d7295be5e9c08b0ec85b0198273bae1f")), # noqa: E501
Address("178.62.246.6", 30303, 30303)),
Node(keys.PublicKey(decode_hex("7a34c02d5ef9de43475580cbb88fb492afb2858cfc45f58cf5c7088ceeded5f58e65be769b79c31c5ae1f012c99b3e9f2ea9ef11764d553544171237a691493b")), # noqa: E501
Address("35.227.38.243", 30303, 30303)),
Node(keys.PublicKey(decode_hex("bbb3ad8be9684fa1d67ac057d18f7357dd236dc01a806fef6977ac9a259b352c00169d092c50475b80aed9e28eff12d2038e97971e0be3b934b366e86b59a723")), # noqa: E501
Address("81.169.153.213", 30303, 30303)),
Node(keys.PublicKey(decode_hex("30b7ab30a01c124a6cceca36863ece12c4f5fa68e3ba9b0b51407ccc002eeed3b3102d20a88f1c1d3c3154e2449317b8ef95090e77b312d5cc39354f86d5d606")), # noqa: E501
Address("52.176.7.10", 30303, 30303)),
Node(keys.PublicKey(decode_hex("02508da84b37a1b7f19f77268e5b69acc9e9ab6989f8e5f2f8440e025e633e4277019b91884e46821414724e790994a502892144fc1333487ceb5a6ce7866a46")), # noqa: E501
Address("54.175.255.230", 30303, 30303)),
Node(keys.PublicKey(decode_hex("0eec3472a46f0b637045e41f923ce1d4a585cd83c1c7418b183c46443a0df7405d020f0a61891b2deef9de35284a0ad7d609db6d30d487dbfef72f7728d09ca9")), # noqa: E501
Address("181.168.193.197", 30303, 30303)),
Node(keys.PublicKey(decode_hex("643c31104d497e3d4cd2460ff0dbb1fb9a6140c8bb0fca66159bbf177d41aefd477091c866494efd3f1f59a0652c93ab2f7bb09034ed5ab9f2c5c6841aef8d94")), # noqa: E501
Address("34.198.237.7", 30303, 30303)),
Node(keys.PublicKey(decode_hex("88c2b24429a6f7683fbfd06874ae3f1e7c8b4a5ffb846e77c705ba02e2543789d66fc032b6606a8d8888eb6239a2abe5897ce83f78dcdcfcb027d6ea69aa6fe9")), # noqa: E501
Address("163.172.157.61", 30303, 30303)),
Node(keys.PublicKey(decode_hex("a1ef9ba5550d5fac27f7cbd4e8d20a643ad75596f307c91cd6e7f85b548b8a6bf215cca436d6ee436d6135f9fe51398f8dd4c0bd6c6a0c332ccb41880f33ec12")), # noqa: E501
Address("51.15.218.125", 30303, 30303)),
Node(keys.PublicKey(decode_hex("e80276aabb7682a4a659f4341c1199de79d91a2e500a6ee9bed16ed4ce927ba8d32ba5dea357739ffdf2c5bcc848d3064bb6f149f0b4249c1f7e53f8bf02bfc8")), # noqa: E501
Address("51.15.39.57", 30303, 30303)),
Node(keys.PublicKey(decode_hex("584c0db89b00719e9e7b1b5c32a4a8942f379f4d5d66bb69f9c7fa97fa42f64974e7b057b35eb5a63fd7973af063f9a1d32d8c60dbb4854c64cb8ab385470258")), # noqa: E501
Address("51.15.35.2", 30303, 30303)),
Node(keys.PublicKey(decode_hex("d40871fc3e11b2649700978e06acd68a24af54e603d4333faecb70926ca7df93baa0b7bf4e927fcad9a7c1c07f9b325b22f6d1730e728314d0e4e6523e5cebc2")), # noqa: E501
Address("51.15.132.235", 30303, 30303)),
Node(keys.PublicKey(decode_hex("482484b9198530ee2e00db89791823244ca41dcd372242e2e1297dd06f6d8dd357603960c5ad9cc8dc15fcdf0e4edd06b7ad7db590e67a0b54f798c26581ebd7")), # noqa: E501
Address("51.15.75.138", 30303, 30303)),
]
else:
raise ValueError("Unknown network_id: {}".format(self.network_id))
random.shuffle(nodes)
for node in nodes:
yield node
async def _receive_handshake(
self, reader: asyncio.StreamReader, writer: asyncio.StreamWriter) -> None:
msg = await self.wait_first(
reader.read(ENCRYPTED_AUTH_MSG_LEN),
timeout=REPLY_TIMEOUT)
ip, socket, *_ = writer.get_extra_info("peername")
remote_address = Address(ip, socket)
self.logger.debug("Receiving handshake from %s", remote_address)
try:
ephem_pubkey, initiator_nonce, initiator_pubkey = decode_authentication(
msg, self.privkey)
except DecryptionError:
# Try to decode as EIP8
msg_size = big_endian_to_int(msg[:2])
remaining_bytes = msg_size - ENCRYPTED_AUTH_MSG_LEN + 2
msg += await self.wait_first(
reader.read(remaining_bytes),
timeout=REPLY_TIMEOUT)
try:
ephem_pubkey, initiator_nonce, initiator_pubkey = decode_authentication(
msg, self.privkey)
except DecryptionError as e:
self.logger.debug("Failed to decrypt handshake: %s", e)
return
# Create `HandshakeResponder(remote: kademlia.Node, privkey: datatypes.PrivateKey)` instance
initiator_remote = Node(initiator_pubkey, remote_address)
responder = HandshakeResponder(initiator_remote, self.privkey, self.cancel_token)
# Call `HandshakeResponder.create_auth_ack_message(nonce: bytes)` to create the reply
responder_nonce = secrets.token_bytes(HASH_LEN)
auth_ack_msg = responder.create_auth_ack_message(nonce=responder_nonce)
auth_ack_ciphertext = responder.encrypt_auth_ack_message(auth_ack_msg)
# Use the `writer` to send the reply to the remote
writer.write(auth_ack_ciphertext)
await writer.drain()
# Call `HandshakeResponder.derive_shared_secrets()` and use return values to create `Peer`
aes_secret, mac_secret, egress_mac, ingress_mac = responder.derive_secrets(
initiator_nonce=initiator_nonce,
responder_nonce=responder_nonce,
remote_ephemeral_pubkey=ephem_pubkey,
auth_init_ciphertext=msg,
auth_ack_ciphertext=auth_ack_ciphertext
)
# Create and register peer in peer_pool
peer = self.peer_class(
remote=initiator_remote,
privkey=self.privkey,
reader=reader,
writer=writer,
aes_secret=aes_secret,
mac_secret=mac_secret,
egress_mac=egress_mac,
ingress_mac=ingress_mac,
headerdb=self.headerdb,
network_id=self.network_id,
inbound=True,
)
await self.do_handshake(peer)
def get_open_port():
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(("", 0))
s.listen(1)
port = s.getsockname()[1]
s.close()
return port
port = get_open_port()
NETWORK_ID = 99
SERVER_ADDRESS = Address('127.0.0.1', udp_port=port, tcp_port=port)
RECEIVER_PRIVKEY = keys.PrivateKey(eip8_values['receiver_private_key'])
RECEIVER_PUBKEY = RECEIVER_PRIVKEY.public_key
RECEIVER_REMOTE = Node(RECEIVER_PUBKEY, SERVER_ADDRESS)
INITIATOR_PRIVKEY = keys.PrivateKey(eip8_values['initiator_private_key'])
INITIATOR_PUBKEY = INITIATOR_PRIVKEY.public_key
INITIATOR_ADDRESS = Address('127.0.0.1', get_open_port() + 1)
INITIATOR_REMOTE = Node(INITIATOR_PUBKEY, INITIATOR_ADDRESS)
class MockPeerPool:
is_full = False
connected_nodes = {}
def __init__(self):
self._new_peers = asyncio.Queue()
async def start_peer(self, peer):
# Yield control to ensure we process any disconnection requests from peers. Otherwise
# we could return peers that should have been disconnected already.
await asyncio.sleep(0)
try:
peer = next(self.iter)
if not peer.is_closing:
return peer
except StopIteration:
raise StopAsyncIteration
DEFAULT_PREFERRED_NODES: Dict[int, Tuple[Node, ...]] = {
MAINNET_NETWORK_ID: (
Node(
keys.PublicKey(
decode_hex(
"1118980bf48b0a3640bdba04e0fe78b1add18e1cd99bf22d53daac1fd9972ad650df52176e7c7d89d1114cfef2bc23a2959aa54998a46afcf7d91809f0855082"
)), # noqa: E501
Address("52.74.57.123", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"78de8a0916848093c73790ead81d1928bec737d565119932b98c6b100d944b7a95e94f847f689fc723399d2e31129d182f7ef3863f2b4c820abbf3ab2722344d"
)), # noqa: E501
Address("191.235.84.50", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"ddd81193df80128880232fc1deb45f72746019839589eeb642d3d44efbb8b2dda2c1a46a348349964a6066f8afb016eb2a8c0f3c66f32fadf4370a236a4b5286"
)), # noqa: E501
Address("52.231.202.145", 30303, 30303)),
Node(
async def receive_connection(cls, reader: asyncio.StreamReader,
writer: asyncio.StreamWriter,
private_key: datatypes.PrivateKey,
token: CancelToken) -> TransportAPI:
try:
msg = await token.cancellable_wait(
reader.readexactly(ENCRYPTED_AUTH_MSG_LEN),
timeout=REPLY_TIMEOUT,
)
except asyncio.IncompleteReadError as err:
raise HandshakeFailure from err
try:
ephem_pubkey, initiator_nonce, initiator_pubkey = decode_authentication(
msg,
private_key,
)
except DecryptionError as non_eip8_err:
# Try to decode as EIP8
msg_size = big_endian_to_int(msg[:2])
remaining_bytes = msg_size - ENCRYPTED_AUTH_MSG_LEN + 2
try:
msg += await token.cancellable_wait(
reader.readexactly(remaining_bytes),
timeout=REPLY_TIMEOUT,
)
except asyncio.IncompleteReadError as err:
raise HandshakeFailure from err
try:
ephem_pubkey, initiator_nonce, initiator_pubkey = decode_authentication(
msg,
private_key,
)
except DecryptionError as eip8_err:
raise HandshakeFailure(
f"Failed to decrypt both EIP8 handshake: {eip8_err} and "
f"non-EIP8 handshake: {non_eip8_err}")
else:
got_eip8 = True
else:
got_eip8 = False
peername = writer.get_extra_info("peername")
if peername is None:
socket = writer.get_extra_info("socket")
sockname = writer.get_extra_info("sockname")
raise HandshakeFailure(
"Received incoming connection with no remote information:"
f"socket={repr(socket)} sockname={sockname}")
ip, socket, *_ = peername
remote_address = Address(ip, socket)
cls.logger.debug("Receiving handshake from %s", remote_address)
initiator_remote = Node(initiator_pubkey, remote_address)
responder = HandshakeResponder(initiator_remote, private_key, got_eip8,
token)
responder_nonce = secrets.token_bytes(HASH_LEN)
auth_ack_msg = responder.create_auth_ack_message(responder_nonce)
auth_ack_ciphertext = responder.encrypt_auth_ack_message(auth_ack_msg)
# Use the `writer` to send the reply to the remote
writer.write(auth_ack_ciphertext)
await token.cancellable_wait(writer.drain())
# Call `HandshakeResponder.derive_shared_secrets()` and use return values to create `Peer`
aes_secret, mac_secret, egress_mac, ingress_mac = responder.derive_secrets(
initiator_nonce=initiator_nonce,
responder_nonce=responder_nonce,
remote_ephemeral_pubkey=ephem_pubkey,
auth_init_ciphertext=msg,
auth_ack_ciphertext=auth_ack_ciphertext)
transport = cls(
remote=initiator_remote,
private_key=private_key,
reader=reader,
writer=writer,
aes_secret=aes_secret,
mac_secret=mac_secret,
egress_mac=egress_mac,
ingress_mac=ingress_mac,
)
return transport
def get_nodes_to_connect(self) -> Generator[Node, None, None]:
from evm.chains.ropsten import RopstenChain
from evm.chains.mainnet import MainnetChain
if self.network_id == MainnetChain.network_id:
nodes = [
Node(
keys.PublicKey(
decode_hex(
"1118980bf48b0a3640bdba04e0fe78b1add18e1cd99bf22d53daac1fd9972ad650df52176e7c7d89d1114cfef2bc23a2959aa54998a46afcf7d91809f0855082"
)), # noqa: E501
Address("52.74.57.123", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"78de8a0916848093c73790ead81d1928bec737d565119932b98c6b100d944b7a95e94f847f689fc723399d2e31129d182f7ef3863f2b4c820abbf3ab2722344d"
)), # noqa: E501
Address("191.235.84.50", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"ddd81193df80128880232fc1deb45f72746019839589eeb642d3d44efbb8b2dda2c1a46a348349964a6066f8afb016eb2a8c0f3c66f32fadf4370a236a4b5286"
)), # noqa: E501
Address("52.231.202.145", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"3f1d12044546b76342d59d4a05532c14b85aa669704bfe1f864fe079415aa2c02d743e03218e57a33fb94523adb54032871a6c51b2cc5514cb7c7e35b3ed0a99"
)), # noqa: E501
Address("13.93.211.84", 30303, 30303)),
]
elif self.network_id == RopstenChain.network_id:
nodes = [
Node(
keys.PublicKey(
decode_hex(
"0d7f627a9a139c1fbff6731d6e0123561738c5155908e32c3a1eea00a3e0c3b460d97c8aea1935c19bfb4e7013651488b8d328b9c142c0b820e221fde7894253"
)), # noqa: E501
Address("58.250.0.61", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"360aeace83f0771dd671f253a023b4757e920aca3598563779d8edb2f4d4ca001b5dc2f900ec1547edcd34cfd5cf858e717647e9b5c1f88cef1934081337678b"
)), # noqa: E501
Address("34.212.25.61", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"49f9e25549aaa9d2bbbedb32bc22029833a8ce457ce54310e44ed8097082379ac94ff5319ff57da0afa91584c271d17324bc3ea3a74e01a9684fbe9a392b239d"
)), # noqa: E501
Address("34.237.139.163", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"5740300afd843ce51b2ca734e30ec690f1b61b163f67a289888757e8962f8046d46f8b6a8d2663246f0b81a75cbc7604619721567054309f15bc360490c8c4da"
)), # noqa: E501
Address("172.104.183.123", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"7f3c9e7472a28904c7b5066bce561ac230801147fb6cffae10967baf058a9fcffe03e386c55e5c1397172aef36d78b9f35b6d4f0dc831707c66530194f4867fb"
)), # noqa: E501
Address("114.242.249.161", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"8d24ff3d32b0fc70bf41cf828b98940e2ef18ab82fc37de779c206cbec88d5c11a3e3af9700953b9f5e6582f73cddd76f90fc1688992fbdf3b9216228c80654c"
)), # noqa: E501
Address("202.9.6.81", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"bbb3ad8be9684fa1d67ac057d18f7357dd236dc01a806fef6977ac9a259b352c00169d092c50475b80aed9e28eff12d2038e97971e0be3b934b366e86b59a723"
)), # noqa: E501
Address("81.169.153.213", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"a147a3adde1daddc0d86f44f1a76404914e44cee018c26d49248142d4dc8a9fb0e7dd14b5153df7e60f23b037922ae1f33b8f318844ef8d2b0453b9ab614d70d"
)), # noqa: E501
Address("72.36.89.11", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"bd2867892d879b57734d571b208bb7adc04fa412fbdfe73b89b1a0ec5b7978932cc776609e4ac7bac231049975ecb22c74988da36cbc5111d116b1edf7d44802"
)), # noqa: E501
Address("185.68.101.99", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"c2bb011038530b60b40a342705246a84e6d2d22d9f8d8d3df4ae1c7464f302396e7be7673a3971b2de16ebd66574ade262fc292b6de7715983f0f15f9c9922ea"
)), # noqa: E501
Address("36.225.32.203", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"d8714127db3c10560a2463c557bbe509c99969078159c69f9ce4f71c2cd1837bcd33db3b9c3c3e88c971b4604bbffa390a0a7f53fc37f122e2e6e0022c059dfd"
)), # noqa: E501
Address("51.15.217.106", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"efc75f109d91cdebc62f33be992ca86fce2637044d49a954a8bdceb439b1239afda32e642456e9dfd759af5b440ef4d8761b9bda887e2200001c5f3ab2614043"
)), # noqa: E501
Address("34.228.166.142", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"c8b9ec645cd7fe570bc73740579064c528771338c31610f44d160d2ae63fd00699caa163f84359ab268d4a0aed8ead66d7295be5e9c08b0ec85b0198273bae1f"
)), # noqa: E501
Address("178.62.246.6", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"7a34c02d5ef9de43475580cbb88fb492afb2858cfc45f58cf5c7088ceeded5f58e65be769b79c31c5ae1f012c99b3e9f2ea9ef11764d553544171237a691493b"
)), # noqa: E501
Address("35.227.38.243", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"bbb3ad8be9684fa1d67ac057d18f7357dd236dc01a806fef6977ac9a259b352c00169d092c50475b80aed9e28eff12d2038e97971e0be3b934b366e86b59a723"
)), # noqa: E501
Address("81.169.153.213", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"30b7ab30a01c124a6cceca36863ece12c4f5fa68e3ba9b0b51407ccc002eeed3b3102d20a88f1c1d3c3154e2449317b8ef95090e77b312d5cc39354f86d5d606"
)), # noqa: E501
Address("52.176.7.10", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"02508da84b37a1b7f19f77268e5b69acc9e9ab6989f8e5f2f8440e025e633e4277019b91884e46821414724e790994a502892144fc1333487ceb5a6ce7866a46"
)), # noqa: E501
Address("54.175.255.230", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"0eec3472a46f0b637045e41f923ce1d4a585cd83c1c7418b183c46443a0df7405d020f0a61891b2deef9de35284a0ad7d609db6d30d487dbfef72f7728d09ca9"
)), # noqa: E501
Address("181.168.193.197", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"643c31104d497e3d4cd2460ff0dbb1fb9a6140c8bb0fca66159bbf177d41aefd477091c866494efd3f1f59a0652c93ab2f7bb09034ed5ab9f2c5c6841aef8d94"
)), # noqa: E501
Address("34.198.237.7", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"88c2b24429a6f7683fbfd06874ae3f1e7c8b4a5ffb846e77c705ba02e2543789d66fc032b6606a8d8888eb6239a2abe5897ce83f78dcdcfcb027d6ea69aa6fe9"
)), # noqa: E501
Address("163.172.157.61", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"a1ef9ba5550d5fac27f7cbd4e8d20a643ad75596f307c91cd6e7f85b548b8a6bf215cca436d6ee436d6135f9fe51398f8dd4c0bd6c6a0c332ccb41880f33ec12"
)), # noqa: E501
Address("51.15.218.125", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"e80276aabb7682a4a659f4341c1199de79d91a2e500a6ee9bed16ed4ce927ba8d32ba5dea357739ffdf2c5bcc848d3064bb6f149f0b4249c1f7e53f8bf02bfc8"
)), # noqa: E501
Address("51.15.39.57", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"584c0db89b00719e9e7b1b5c32a4a8942f379f4d5d66bb69f9c7fa97fa42f64974e7b057b35eb5a63fd7973af063f9a1d32d8c60dbb4854c64cb8ab385470258"
)), # noqa: E501
Address("51.15.35.2", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"d40871fc3e11b2649700978e06acd68a24af54e603d4333faecb70926ca7df93baa0b7bf4e927fcad9a7c1c07f9b325b22f6d1730e728314d0e4e6523e5cebc2"
)), # noqa: E501
Address("51.15.132.235", 30303, 30303)),
Node(
keys.PublicKey(
decode_hex(
"482484b9198530ee2e00db89791823244ca41dcd372242e2e1297dd06f6d8dd357603960c5ad9cc8dc15fcdf0e4edd06b7ad7db590e67a0b54f798c26581ebd7"
)), # noqa: E501
Address("51.15.75.138", 30303, 30303)),
]
else:
raise ValueError("Unknown network_id: {}".format(self.network_id))
random.shuffle(nodes)
for node in nodes:
yield node
