forked from LBRYCommunity/lbry-sdk
116 lines
5.5 KiB
Python
116 lines
5.5 KiB
Python
import asyncio
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from binascii import hexlify
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from lbrynet.dht import constants
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from lbrynet.dht.node import Node
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from lbrynet.dht.peer import PeerManager, KademliaPeer
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from torba.testcase import AsyncioTestCase
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class DHTIntegrationTest(AsyncioTestCase):
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async def asyncSetUp(self):
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import logging
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logging.getLogger('asyncio').setLevel(logging.ERROR)
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logging.getLogger('lbrynet.dht').setLevel(logging.WARN)
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self.nodes = []
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self.known_node_addresses = []
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async def setup_network(self, size: int, start_port=40000, seed_nodes=1):
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for i in range(size):
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node_port = start_port + i
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node = Node(self.loop, PeerManager(self.loop), node_id=constants.generate_id(i),
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udp_port=node_port, internal_udp_port=node_port,
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peer_port=3333, external_ip='127.0.0.1')
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self.nodes.append(node)
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self.known_node_addresses.append(('127.0.0.1', node_port))
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await node.start_listening('127.0.0.1')
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self.addCleanup(node.stop)
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for node in self.nodes:
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node.protocol.rpc_timeout = .5
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node.protocol.ping_queue._default_delay = .5
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node.start('127.0.0.1', self.known_node_addresses[:seed_nodes])
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await asyncio.gather(*[node.joined.wait() for node in self.nodes])
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async def test_replace_bad_nodes(self):
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await self.setup_network(20)
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self.assertEquals(len(self.nodes), 20)
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node = self.nodes[0]
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bad_peers = []
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for candidate in self.nodes[1:10]:
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address, port, node_id = candidate.protocol.external_ip, candidate.protocol.udp_port, candidate.protocol.node_id
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peer = KademliaPeer(self.loop, address, node_id, port)
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bad_peers.append(peer)
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node.protocol.add_peer(peer)
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candidate.stop()
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await asyncio.sleep(.3) # let pending events settle
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for bad_peer in bad_peers:
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self.assertIn(bad_peer, node.protocol.routing_table.get_peers())
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await node.refresh_node(True)
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await asyncio.sleep(.3) # let pending events settle
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good_nodes = {good_node.protocol.node_id for good_node in self.nodes[10:]}
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for peer in node.protocol.routing_table.get_peers():
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self.assertIn(peer.node_id, good_nodes)
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async def test_re_join(self):
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await self.setup_network(20, seed_nodes=10)
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node = self.nodes[-1]
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self.assertTrue(node.joined.is_set())
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self.assertTrue(node.protocol.routing_table.get_peers())
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for network_node in self.nodes[:-1]:
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network_node.stop()
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await node.refresh_node(True)
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await asyncio.sleep(.3) # let pending events settle
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self.assertFalse(node.protocol.routing_table.get_peers())
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for network_node in self.nodes[:-1]:
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network_node.start('127.0.0.1', self.known_node_addresses)
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self.assertFalse(node.protocol.routing_table.get_peers())
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timeout = 20
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while not node.protocol.routing_table.get_peers():
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await asyncio.sleep(.1)
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timeout -= 1
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if not timeout:
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self.fail("node didnt join back after 2 seconds")
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async def test_announce_no_peers(self):
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await self.setup_network(1)
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node = self.nodes[0]
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blob_hash = hexlify(constants.generate_id(1337)).decode()
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peers = await node.announce_blob(blob_hash)
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self.assertEqual(len(peers), 0)
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async def test_get_token_on_announce(self):
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await self.setup_network(2, seed_nodes=2)
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node1, node2 = self.nodes
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node1.protocol.peer_manager.clear_token(node2.protocol.node_id)
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blob_hash = hexlify(constants.generate_id(1337)).decode()
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node_ids = await node1.announce_blob(blob_hash)
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self.assertIn(node2.protocol.node_id, node_ids)
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node2.protocol.node_rpc.refresh_token()
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node_ids = await node1.announce_blob(blob_hash)
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self.assertIn(node2.protocol.node_id, node_ids)
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node2.protocol.node_rpc.refresh_token()
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node_ids = await node1.announce_blob(blob_hash)
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self.assertIn(node2.protocol.node_id, node_ids)
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async def test_peer_search_removes_bad_peers(self):
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# that's an edge case discovered by Tom, but an important one
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# imagine that you only got bad peers and refresh will happen in one hour
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# instead of failing for one hour we should be able to recover by scheduling pings to bad peers we find
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await self.setup_network(2, seed_nodes=2)
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node1, node2 = self.nodes
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node2.stop()
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# forcefully make it a bad peer but dont remove it from routing table
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address, port, node_id = node2.protocol.external_ip, node2.protocol.udp_port, node2.protocol.node_id
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peer = KademliaPeer(self.loop, address, node_id, port)
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self.assertTrue(node1.protocol.peer_manager.peer_is_good(peer))
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node1.protocol.peer_manager.report_failure(node2.protocol.external_ip, node2.protocol.udp_port)
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node1.protocol.peer_manager.report_failure(node2.protocol.external_ip, node2.protocol.udp_port)
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self.assertFalse(node1.protocol.peer_manager.peer_is_good(peer))
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# now a search happens, which removes bad peers while contacting them
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self.assertTrue(node1.protocol.routing_table.get_peers())
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await node1.peer_search(node2.protocol.node_id)
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await asyncio.sleep(.3) # let pending events settle
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self.assertFalse(node1.protocol.routing_table.get_peers())
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