py-libp2p/libp2p/host/routed_host.py

37 lines
1.5 KiB
Python
Raw Normal View History

from libp2p.host.basic_host import BasicHost
from libp2p.network.network_interface import INetwork
from libp2p.peer.peerinfo import PeerInfo
from libp2p.routing.interfaces import IPeerRouting
# RoutedHost is a p2p Host that includes a routing system.
# This allows the Host to find the addresses for peers when it does not have them.
class RoutedHost(BasicHost):
_router: IPeerRouting
def __init__(self, network: INetwork, router: IPeerRouting):
super().__init__(network)
self._router = router
async def connect(self, peer_info: PeerInfo) -> None:
"""
connect ensures there is a connection between this host and the peer with
given `peer_info.peer_id`. See (basic_host).connect for more information.
RoutedHost's Connect differs in that if the host has no addresses for a
given peer, it will use its routing system to try to find some.
:param peer_info: peer_info of the peer we want to connect to
:type peer_info: peer.peerinfo.PeerInfo
"""
# check if we were given some addresses, otherwise, find some with the routing system.
if not peer_info.addrs:
peer_info.addrs = (await self._router.find_peer(peer_info.peer_id)).addrs
self.peerstore.add_addrs(peer_info.peer_id, peer_info.addrs, 10)
# there is already a connection to this peer
if peer_info.peer_id in self._network.connections:
return
await self._network.dial_peer(peer_info.peer_id)