async def connect(self, remote: kademlia.Node) -> LESPeer:
"""
Connect to the given remote and return a Peer instance when successful.
Returns None if the remote is unreachable, times out or is useless.
"""
if remote in self.connected_nodes:
self.logger.debug("Skipping %s; already connected to it", remote)
return None
try:
peer = await asyncio.wait_for(
handshake(remote, self.privkey, self.peer_class, self.chaindb,
self.network_id), HANDSHAKE_TIMEOUT)
return cast(LESPeer, peer)
except (UnreachablePeer, asyncio.TimeoutError,
PeerConnectionLost) as e:
self.logger.debug("Could not complete handshake with %s: %s",
remote, e)
except UselessPeer:
self.logger.debug("No matching capabilities with %s", remote)
except PeerDisconnected as e:
self.logger.debug(
"%s disconnected before completing handshake; reason: %s",
remote, e)
except Exception:
self.logger.warn(
"Unexpected error during auth/p2p handhsake with %s: %s",
remote, traceback.format_exc())
return None
async def connect(self, remote: kademlia.Node) -> LESPeer:
"""
Connect to the given remote and return a Peer instance when successful.
Returns None if the remote is unreachable, times out or is useless.
"""
if remote in self.connected_nodes:
self.logger.debug("Skipping %s; already connected to it", remote)
return None
expected_exceptions = (UnreachablePeer, asyncio.TimeoutError,
PeerConnectionLost, UselessPeer,
PeerDisconnected)
try:
self.logger.info("Connecting to %s...", remote)
peer = await asyncio.wait_for(
handshake(remote, self.privkey, self.peer_class, self.chaindb,
self.network_id, self.msg_handler),
HANDSHAKE_TIMEOUT)
return cast(LESPeer, peer)
except expected_exceptions as e:
self.logger.info("Could not complete handshake with %s: %s",
remote, repr(e))
except Exception:
self.logger.warn(
"Unexpected error during auth/p2p handhsake with %s: %s",
remote, traceback.format_exc())
return None