forked from LBRYCommunity/lbry-sdk
192 lines
9.1 KiB
Python
192 lines
9.1 KiB
Python
import asyncio
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import lbry
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from unittest.mock import Mock
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from lbry.wallet.network import Network
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from lbry.wallet.orchstr8.node import SPVNode
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from lbry.wallet.rpc import RPCSession
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from lbry.testcase import IntegrationTestCase, AsyncioTestCase
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class NetworkTests(IntegrationTestCase):
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async def test_remote_height_updated_automagically(self):
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initial_height = self.ledger.network.remote_height
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await self.blockchain.generate(1)
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await self.ledger.network.on_header.first
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self.assertEqual(self.ledger.network.remote_height, initial_height + 1)
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async def test_server_features(self):
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self.assertDictEqual({
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'genesis_hash': self.conductor.spv_node.coin_class.GENESIS_HASH,
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'hash_function': 'sha256',
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'hosts': {},
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'protocol_max': '0.99.0',
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'protocol_min': '0.54.0',
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'pruning': None,
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'description': '',
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'payment_address': '',
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'donation_address': '',
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'daily_fee': '0',
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'server_version': lbry.__version__,
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'trending_algorithm': 'zscore',
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}, await self.ledger.network.get_server_features())
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await self.conductor.spv_node.stop()
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payment_address, donation_address = await self.account.get_addresses(limit=2)
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await self.conductor.spv_node.start(
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self.conductor.blockchain_node,
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extraconf={
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'DESCRIPTION': 'Fastest server in the west.',
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'PAYMENT_ADDRESS': payment_address,
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'DONATION_ADDRESS': donation_address,
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'DAILY_FEE': '42'
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}
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)
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await self.ledger.network.on_connected.first
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self.assertDictEqual({
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'genesis_hash': self.conductor.spv_node.coin_class.GENESIS_HASH,
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'hash_function': 'sha256',
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'hosts': {},
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'protocol_max': '0.99.0',
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'protocol_min': '0.54.0',
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'pruning': None,
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'description': 'Fastest server in the west.',
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'payment_address': payment_address,
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'donation_address': donation_address,
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'daily_fee': '42',
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'server_version': lbry.__version__,
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'trending_algorithm': 'zscore',
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}, await self.ledger.network.get_server_features())
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class ReconnectTests(IntegrationTestCase):
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async def test_multiple_servers(self):
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# we have a secondary node that connects later, so
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node2 = SPVNode(self.conductor.spv_module, node_number=2)
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self.ledger.network.config['default_servers'].append((node2.hostname, node2.port))
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await asyncio.wait_for(self.ledger.stop(), timeout=1)
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await asyncio.wait_for(self.ledger.start(), timeout=1)
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self.ledger.network.session_pool.new_connection_event.clear()
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await node2.start(self.blockchain)
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# this is only to speed up the test as retrying would take 4+ seconds
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for session in self.ledger.network.session_pool.sessions:
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session.trigger_urgent_reconnect.set()
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await asyncio.wait_for(self.ledger.network.session_pool.new_connection_event.wait(), timeout=1)
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self.assertEqual(2, len(list(self.ledger.network.session_pool.available_sessions)))
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self.assertTrue(self.ledger.network.is_connected)
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switch_event = self.ledger.network.on_connected.first
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await node2.stop(True)
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# secondary down, but primary is ok, do not switch! (switches trigger new on_connected events)
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with self.assertRaises(asyncio.TimeoutError):
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await asyncio.wait_for(switch_event, timeout=1)
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async def test_direct_sync(self):
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await self.ledger.stop()
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initial_height = self.ledger.local_height_including_downloaded_height
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await self.blockchain.generate(100)
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while self.conductor.spv_node.server.session_mgr.notified_height < initial_height + 99: # off by 1
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await asyncio.sleep(0.1)
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self.assertEqual(initial_height, self.ledger.local_height_including_downloaded_height)
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await self.ledger.headers.open()
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await self.ledger.network.start()
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await self.ledger.network.on_connected.first
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await self.ledger.initial_headers_sync()
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self.assertEqual(initial_height + 100, self.ledger.local_height_including_downloaded_height)
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async def test_connection_drop_still_receives_events_after_reconnected(self):
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address1 = await self.account.receiving.get_or_create_usable_address()
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# disconnect and send a new tx, should reconnect and get it
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self.ledger.network.client.connection_lost(Exception())
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self.assertFalse(self.ledger.network.is_connected)
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sendtxid = await self.blockchain.send_to_address(address1, 1.1337)
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await asyncio.wait_for(self.on_transaction_id(sendtxid), 1.0) # mempool
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await self.blockchain.generate(1)
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await self.on_transaction_id(sendtxid) # confirmed
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self.assertLess(self.ledger.network.client.response_time, 1) # response time properly set lower, we are fine
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await self.assertBalance(self.account, '1.1337')
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# is it real? are we rich!? let me see this tx...
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d = self.ledger.network.get_transaction(sendtxid)
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# what's that smoke on my ethernet cable? oh no!
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master_client = self.ledger.network.client
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self.ledger.network.client.connection_lost(Exception())
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with self.assertRaises(asyncio.TimeoutError):
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await d
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self.assertIsNone(master_client.response_time) # response time unknown as it failed
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# rich but offline? no way, no water, let's retry
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with self.assertRaisesRegex(ConnectionError, 'connection is not available'):
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await self.ledger.network.get_transaction(sendtxid)
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# * goes to pick some water outside... * time passes by and another donation comes in
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sendtxid = await self.blockchain.send_to_address(address1, 42)
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await self.blockchain.generate(1)
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# (this is just so the test doesn't hang forever if it doesn't reconnect)
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if not self.ledger.network.is_connected:
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await asyncio.wait_for(self.ledger.network.on_connected.first, timeout=1.0)
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# omg, the burned cable still works! torba is fire proof!
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await self.ledger.network.get_transaction(sendtxid)
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async def test_timeout_then_reconnect(self):
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# tests that it connects back after some failed attempts
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await self.conductor.spv_node.stop()
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self.assertFalse(self.ledger.network.is_connected)
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await asyncio.sleep(0.2) # let it retry and fail once
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await self.conductor.spv_node.start(self.conductor.blockchain_node)
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await self.ledger.network.on_connected.first
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self.assertTrue(self.ledger.network.is_connected)
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async def test_online_but_still_unavailable(self):
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# Edge case. See issue #2445 for context
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self.assertIsNotNone(self.ledger.network.session_pool.fastest_session)
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for session in self.ledger.network.session_pool.sessions:
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session.response_time = None
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self.assertIsNone(self.ledger.network.session_pool.fastest_session)
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class ServerPickingTestCase(AsyncioTestCase):
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async def _make_fake_server(self, latency=1.0, port=1):
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# local fake server with artificial latency
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class FakeSession(RPCSession):
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async def handle_request(self, request):
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await asyncio.sleep(latency)
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if request.method == 'server.version':
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return tuple(request.args)
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return {'height': 1}
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server = await self.loop.create_server(lambda: FakeSession(), host='127.0.0.1', port=port)
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self.addCleanup(server.close)
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return '127.0.0.1', port
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async def _make_bad_server(self, port=42420):
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async def echo(reader, writer):
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while True:
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writer.write(await reader.read())
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server = await asyncio.start_server(echo, host='127.0.0.1', port=port)
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self.addCleanup(server.close)
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return '127.0.0.1', port
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async def test_pick_fastest(self):
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ledger = Mock(config={
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'default_servers': [
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# fast but unhealthy, should be discarded
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await self._make_bad_server(),
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('localhost', 1),
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('example.that.doesnt.resolve', 9000),
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await self._make_fake_server(latency=1.0, port=1340),
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await self._make_fake_server(latency=0.1, port=1337),
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await self._make_fake_server(latency=0.4, port=1339),
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],
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'connect_timeout': 3
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})
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network = Network(ledger)
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self.addCleanup(network.stop)
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asyncio.ensure_future(network.start())
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await asyncio.wait_for(network.on_connected.first, timeout=1)
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self.assertTrue(network.is_connected)
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self.assertTupleEqual(network.client.server, ('127.0.0.1', 1337))
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self.assertTrue(all([not session.is_closing() for session in network.session_pool.available_sessions]))
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# ensure we are connected to all of them after a while
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await asyncio.sleep(1)
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self.assertEqual(len(list(network.session_pool.available_sessions)), 3)
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