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