async def _handle_status(self, stream: INetStream) -> None:
# TODO: Find out when we should respond the `ResponseCode`
# other than `ResponseCode.SUCCESS`.
async with self.new_handshake_interaction(stream) as interaction:
peer_id = interaction.peer_id
peer_status = await interaction.read_request(Status)
self.logger.info("Received Status from %s %s", str(peer_id), peer_status)
await validate_peer_status(self.chain, peer_status)
my_status = get_my_status(self.chain)
await interaction.write_response(my_status)
self._add_peer_from_status(peer_id, peer_status)
if peer_is_ahead(self.chain, peer_status):
logger.debug(
"Peer's chain is ahead of us, start syncing with the peer(%s)",
str(peer_id),
)
await self._event_bus.broadcast(SyncRequest())
async def request_status(self, peer_id: ID) -> None:
self.logger.info("Initiate handshake with %s", str(peer_id))
try:
stream = await self.new_stream(peer_id, REQ_RESP_STATUS_SSZ)
except StreamFailure as error:
self.logger.debug("Fail to open stream to %s", str(peer_id))
raise HandshakeFailure from error
async with self.new_handshake_interaction(stream) as interaction:
my_status = get_my_status(self.chain)
await interaction.write_request(my_status)
peer_status = await interaction.read_response(Status)
await validate_peer_status(self.chain, peer_status)
self._add_peer_from_status(peer_id, peer_status)
if peer_is_ahead(self.chain, peer_status):
logger.debug(
"Peer's chain is ahead of us, start syncing with the peer(%s)",
str(peer_id),
)
await self._event_bus.broadcast(SyncRequest())