async def _handle_new_block(self, sender: SessionAPI,
payload: NewBlockPayload) -> None:
header = payload.block.header
sender_peer = ETHProxyPeer.from_session(
sender, self._event_bus, TO_NETWORKING_BROADCAST_CONFIG)
sender_peer_str = str(sender_peer)
# Add peer to tracker if we've seen this block before
if header.hash in self._peer_block_tracker:
if sender_peer_str not in self._peer_block_tracker[header.hash]:
self._peer_block_tracker[header.hash].append(sender_peer_str)
else:
# Verify the validity of block, add to tracker and broadcast to eligible peers
with get_eth1_chain_with_remote_db(self._boot_info,
self._event_bus) as chain:
try:
chain.validate_seal(header)
except ValidationError as exc:
self.logger.info(
"Received invalid block from peer: %s. %s",
sender_peer_str,
exc,
)
else:
self.manager.run_task(self._fetch_witnesses, sender_peer,
header.hash, header.block_number)
self._peer_block_tracker[header.hash] = [sender_peer_str]
# Here we only broadcast a NewBlock msg to a subset of our peers, and once the
# block is imported into our chain a NewBlockImported event will be generated
# and we'll announce it to the remaining ones, as per the spec.
await self._broadcast_new_block(payload.block,
payload.total_difficulty)
async def _handle_msg(self, session: SessionAPI,
cmd: CommandAPI[Any]) -> None:
peer = ETHProxyPeer.from_session(session, self.event_bus,
self.broadcast_config)
if isinstance(cmd, GetBlockWitnessHashes):
await self.handle_get_block_witnesses(peer, cmd)
else:
self.logger.warning("Unexpected command type: %s", cmd)
async def _handle_new_block_hashes(self) -> None:
async for event in self._event_bus.stream(NewBlockHashesEvent):
sender_peer = ETHProxyPeer.from_session(
event.session, self._event_bus, TO_NETWORKING_BROADCAST_CONFIG)
for new_block_hash in event.command.payload:
self.manager.run_task(self._fetch_witnesses, sender_peer,
new_block_hash.hash,
new_block_hash.number)
async def _handle_new_block(self, sender: SessionAPI,
payload: NewBlockPayload) -> None:
header = payload.block.header
sender_peer = ETHProxyPeer.from_session(
sender, self._event_bus, TO_NETWORKING_BROADCAST_CONFIG)
sender_peer_str = str(sender_peer)
self.logger.debug("Received NewBlock from %s: %s", sender, header)
# Add peer to tracker if we've seen this block before
if header.hash in self._peer_block_tracker:
if sender_peer_str not in self._peer_block_tracker[header.hash]:
self._peer_block_tracker[header.hash].append(sender_peer_str)
else:
# Verify the validity of block, add to tracker and broadcast to eligible peers
with get_eth1_chain_with_remote_db(self._boot_info,
self._event_bus) as chain:
try:
chain.validate_seal(header)
except ValidationError as exc:
self.logger.info(
"Received invalid block from peer: %s. %s",
sender_peer_str,
exc,
)
else:
try:
with trio.fail_after(5):
# Sometimes we get a NewBlock/NewBlockHashes msg before the BeamSyncer
# service has started, and there will be no subscribers to
# FetchBlockWitness in that case. This ensures we wait for it to start
# before attempting to fire CollectMissingTrieNodes events.
await self._event_bus.wait_until_any_endpoint_subscribed_to(
FetchBlockWitness)
except trio.TooSlowError:
self.logger.warning(
"No subscribers for FetchBlockWitness, couldn't feth witness for %s",
header,
)
else:
self.manager.run_task(
self._event_bus.request,
FetchBlockWitness(sender, header.hash,
header.block_number),
)
self._peer_block_tracker[header.hash] = [sender_peer_str]
# Here we only broadcast a NewBlock msg to a subset of our peers, and once the
# block is imported into our chain a NewBlockImported event will be generated
# and we'll announce it to the remaining ones, as per the spec.
await self._broadcast_new_block(payload.block,
payload.total_difficulty)
async def _handle_msg(self,
session: SessionAPI,
cmd: CommandAPI[Any]) -> None:
self.logger.debug2("Peer %s requested %s", session, cmd)
peer = ETHProxyPeer.from_session(session, self.event_bus, self.broadcast_config)
if isinstance(cmd, commands.GetBlockHeadersV65):
await self._handler.handle_get_block_headers(peer, cmd)
elif isinstance(cmd, commands.GetBlockBodiesV65):
await self._handler.handle_get_block_bodies(peer, cmd)
elif isinstance(cmd, commands.GetReceiptsV65):
await self._handler.handle_get_receipts(peer, cmd)
elif isinstance(cmd, commands.GetNodeDataV65):
await self._handler.handle_get_node_data(peer, cmd)
else:
self.logger.debug("%s msg not handled yet, needs to be implemented", cmd)
async def _handle_msg(self,
remote: Node,
cmd: Command,
msg: protocol._DecodedMsgType) -> None:
self.logger.debug2("Peer %s requested %s", remote, cmd)
peer = ETHProxyPeer.from_node(remote, self.event_bus, self.broadcast_config)
if isinstance(cmd, commands.GetBlockHeaders):
await self._handler.handle_get_block_headers(peer, cast(Dict[str, Any], msg))
elif isinstance(cmd, commands.GetBlockBodies):
block_hashes = cast(Sequence[Hash32], msg)
await self._handler.handle_get_block_bodies(peer, block_hashes)
elif isinstance(cmd, commands.GetReceipts):
block_hashes = cast(Sequence[Hash32], msg)
await self._handler.handle_get_receipts(peer, block_hashes)
elif isinstance(cmd, commands.GetNodeData):
node_hashes = cast(Sequence[Hash32], msg)
await self._handler.handle_get_node_data(peer, node_hashes)
else:
self.logger.debug("%s msg not handled yet, needs to be implemented", cmd)
async def _handle_new_block(self, sender: SessionAPI,
block: NewBlockPayload) -> None:
header = block.block.header
sender_peer_str = str(
ETHProxyPeer.from_session(sender, self._event_bus,
TO_NETWORKING_BROADCAST_CONFIG))
# Add peer to tracker if we've seen this block before
if header.hash in self._peer_block_tracker:
if sender_peer_str not in self._peer_block_tracker[header.hash]:
self._peer_block_tracker[header.hash].append(sender_peer_str)
else:
# Verify the validity of block, add to tracker and broadcast to eligible peers
try:
check_pow(header.block_number, header.mining_hash,
header.mix_hash, header.nonce, header.difficulty)
except ValidationError:
self.logger.info("Received invalid block from peer: %s",
sender_peer_str)
else:
self._peer_block_tracker[header.hash] = [sender_peer_str]
await self._broadcast_newly_seen_block(header)