git / moonbite-core / test/functional/p2p_tx_download.py · raw
#!/usr/bin/env python3# Copyright (c) 2019-2020 The Bitcoin Core developers# Distributed under the MIT software license, see the accompanying# file COPYING or http://www.opensource.org/licenses/mit-license.php."""Test transaction download behavior"""from test_framework.messages import ( CInv, CTransaction, FromHex, MSG_TX, MSG_TYPE_MASK, MSG_WTX, msg_inv, msg_notfound,)from test_framework.p2p import ( P2PInterface, p2p_lock,)from test_framework.test_framework import BitcoinTestFrameworkfrom test_framework.util import ( assert_equal,)from test_framework.address import ADDRESS_BCRT1_UNSPENDABLEimport timeclass TestP2PConn(P2PInterface): def __init__(self): super().__init__() self.tx_getdata_count = 0 def on_getdata(self, message): for i in message.inv: if i.type & MSG_TYPE_MASK == MSG_TX or i.type & MSG_TYPE_MASK == MSG_WTX: self.tx_getdata_count += 1# Constants from net_processingGETDATA_TX_INTERVAL = 60 # secondsINBOUND_PEER_TX_DELAY = 2 # secondsTXID_RELAY_DELAY = 2 # secondsOVERLOADED_PEER_DELAY = 2 # secondsMAX_GETDATA_IN_FLIGHT = 100MAX_PEER_TX_ANNOUNCEMENTS = 5000# Python test constantsNUM_INBOUND = 10MAX_GETDATA_INBOUND_WAIT = GETDATA_TX_INTERVAL + INBOUND_PEER_TX_DELAY + TXID_RELAY_DELAYclass TxDownloadTest(BitcoinTestFramework): def set_test_params(self): self.setup_clean_chain = False self.num_nodes = 2 def test_tx_requests(self): self.log.info("Test that we request transactions from all our peers, eventually") txid = 0xdeadbeef self.log.info("Announce the txid from each incoming peer to node 0") msg = msg_inv([CInv(t=MSG_WTX, h=txid)]) for p in self.nodes[0].p2ps: p.send_and_ping(msg) outstanding_peer_index = [i for i in range(len(self.nodes[0].p2ps))] def getdata_found(peer_index): p = self.nodes[0].p2ps[peer_index] with p2p_lock: return p.last_message.get("getdata") and p.last_message["getdata"].inv[-1].hash == txid node_0_mocktime = int(time.time()) while outstanding_peer_index: node_0_mocktime += MAX_GETDATA_INBOUND_WAIT self.nodes[0].setmocktime(node_0_mocktime) self.wait_until(lambda: any(getdata_found(i) for i in outstanding_peer_index)) for i in outstanding_peer_index: if getdata_found(i): outstanding_peer_index.remove(i) self.nodes[0].setmocktime(0) self.log.info("All outstanding peers received a getdata") def test_inv_block(self): self.log.info("Generate a transaction on node 0") tx = self.nodes[0].createrawtransaction( inputs=[{ # coinbase "txid": self.nodes[0].getblock(self.nodes[0].getblockhash(1))['tx'][0], "vout": 0 }], outputs={ADDRESS_BCRT1_UNSPENDABLE: 50 - 0.00025}, ) tx = self.nodes[0].signrawtransactionwithkey( hexstring=tx, privkeys=[self.nodes[0].get_deterministic_priv_key().key], )['hex'] ctx = FromHex(CTransaction(), tx) txid = int(ctx.rehash(), 16) self.log.info( "Announce the transaction to all nodes from all {} incoming peers, but never send it".format(NUM_INBOUND)) msg = msg_inv([CInv(t=MSG_TX, h=txid)]) for p in self.peers: p.send_and_ping(msg) self.log.info("Put the tx in node 0's mempool") self.nodes[0].sendrawtransaction(tx) # Since node 1 is connected outbound to an honest peer (node 0), it # should get the tx within a timeout. (Assuming that node 0 # announced the tx within the timeout) # The timeout is the sum of # * the worst case until the tx is first requested from an inbound # peer, plus # * the first time it is re-requested from the outbound peer, plus # * 2 seconds to avoid races assert self.nodes[1].getpeerinfo()[0]['inbound'] == False timeout = 2 + INBOUND_PEER_TX_DELAY + GETDATA_TX_INTERVAL self.log.info("Tx should be received at node 1 after {} seconds".format(timeout)) self.sync_mempools(timeout=timeout) def test_in_flight_max(self): self.log.info("Test that we don't load peers with more than {} transaction requests immediately".format(MAX_GETDATA_IN_FLIGHT)) txids = [i for i in range(MAX_GETDATA_IN_FLIGHT + 2)] p = self.nodes[0].p2ps[0] with p2p_lock: p.tx_getdata_count = 0 mock_time = int(time.time() + 1) self.nodes[0].setmocktime(mock_time) for i in range(MAX_GETDATA_IN_FLIGHT): p.send_message(msg_inv([CInv(t=MSG_WTX, h=txids[i])])) p.sync_with_ping() mock_time += INBOUND_PEER_TX_DELAY self.nodes[0].setmocktime(mock_time) p.wait_until(lambda: p.tx_getdata_count >= MAX_GETDATA_IN_FLIGHT) for i in range(MAX_GETDATA_IN_FLIGHT, len(txids)): p.send_message(msg_inv([CInv(t=MSG_WTX, h=txids[i])])) p.sync_with_ping() self.log.info("No more than {} requests should be seen within {} seconds after announcement".format(MAX_GETDATA_IN_FLIGHT, INBOUND_PEER_TX_DELAY + OVERLOADED_PEER_DELAY - 1)) self.nodes[0].setmocktime(mock_time + INBOUND_PEER_TX_DELAY + OVERLOADED_PEER_DELAY - 1) p.sync_with_ping() with p2p_lock: assert_equal(p.tx_getdata_count, MAX_GETDATA_IN_FLIGHT) self.log.info("If we wait {} seconds after announcement, we should eventually get more requests".format(INBOUND_PEER_TX_DELAY + OVERLOADED_PEER_DELAY)) self.nodes[0].setmocktime(mock_time + INBOUND_PEER_TX_DELAY + OVERLOADED_PEER_DELAY) p.wait_until(lambda: p.tx_getdata_count == len(txids)) def test_expiry_fallback(self): self.log.info('Check that expiry will select another peer for download') WTXID = 0xffaa peer1 = self.nodes[0].add_p2p_connection(TestP2PConn()) peer2 = self.nodes[0].add_p2p_connection(TestP2PConn()) for p in [peer1, peer2]: p.send_message(msg_inv([CInv(t=MSG_WTX, h=WTXID)])) # One of the peers is asked for the tx peer2.wait_until(lambda: sum(p.tx_getdata_count for p in [peer1, peer2]) == 1) with p2p_lock: peer_expiry, peer_fallback = (peer1, peer2) if peer1.tx_getdata_count == 1 else (peer2, peer1) assert_equal(peer_fallback.tx_getdata_count, 0) self.nodes[0].setmocktime(int(time.time()) + GETDATA_TX_INTERVAL + 1) # Wait for request to peer_expiry to expire peer_fallback.wait_until(lambda: peer_fallback.tx_getdata_count >= 1, timeout=1) with p2p_lock: assert_equal(peer_fallback.tx_getdata_count, 1) self.restart_node(0) # reset mocktime def test_disconnect_fallback(self): self.log.info('Check that disconnect will select another peer for download') WTXID = 0xffbb peer1 = self.nodes[0].add_p2p_connection(TestP2PConn()) peer2 = self.nodes[0].add_p2p_connection(TestP2PConn()) for p in [peer1, peer2]: p.send_message(msg_inv([CInv(t=MSG_WTX, h=WTXID)])) # One of the peers is asked for the tx peer2.wait_until(lambda: sum(p.tx_getdata_count for p in [peer1, peer2]) == 1) with p2p_lock: peer_disconnect, peer_fallback = (peer1, peer2) if peer1.tx_getdata_count == 1 else (peer2, peer1) assert_equal(peer_fallback.tx_getdata_count, 0) peer_disconnect.peer_disconnect() peer_disconnect.wait_for_disconnect() peer_fallback.wait_until(lambda: peer_fallback.tx_getdata_count >= 1, timeout=1) with p2p_lock: assert_equal(peer_fallback.tx_getdata_count, 1) def test_notfound_fallback(self): self.log.info('Check that notfounds will select another peer for download immediately') WTXID = 0xffdd peer1 = self.nodes[0].add_p2p_connection(TestP2PConn()) peer2 = self.nodes[0].add_p2p_connection(TestP2PConn()) for p in [peer1, peer2]: p.send_message(msg_inv([CInv(t=MSG_WTX, h=WTXID)])) # One of the peers is asked for the tx peer2.wait_until(lambda: sum(p.tx_getdata_count for p in [peer1, peer2]) == 1) with p2p_lock: peer_notfound, peer_fallback = (peer1, peer2) if peer1.tx_getdata_count == 1 else (peer2, peer1) assert_equal(peer_fallback.tx_getdata_count, 0) peer_notfound.send_and_ping(msg_notfound(vec=[CInv(MSG_WTX, WTXID)])) # Send notfound, so that fallback peer is selected peer_fallback.wait_until(lambda: peer_fallback.tx_getdata_count >= 1, timeout=1) with p2p_lock: assert_equal(peer_fallback.tx_getdata_count, 1) def test_preferred_inv(self): self.log.info('Check that invs from preferred peers are downloaded immediately') self.restart_node(0, extra_args=['-whitelist=noban@127.0.0.1']) peer = self.nodes[0].add_p2p_connection(TestP2PConn()) peer.send_message(msg_inv([CInv(t=MSG_WTX, h=0xff00ff00)])) peer.wait_until(lambda: peer.tx_getdata_count >= 1, timeout=1) with p2p_lock: assert_equal(peer.tx_getdata_count, 1) def test_large_inv_batch(self): self.log.info('Test how large inv batches are handled with relay permission') self.restart_node(0, extra_args=['-whitelist=relay@127.0.0.1']) peer = self.nodes[0].add_p2p_connection(TestP2PConn()) peer.send_message(msg_inv([CInv(t=MSG_WTX, h=wtxid) for wtxid in range(MAX_PEER_TX_ANNOUNCEMENTS + 1)])) peer.wait_until(lambda: peer.tx_getdata_count == MAX_PEER_TX_ANNOUNCEMENTS + 1) self.log.info('Test how large inv batches are handled without relay permission') self.restart_node(0) peer = self.nodes[0].add_p2p_connection(TestP2PConn()) peer.send_message(msg_inv([CInv(t=MSG_WTX, h=wtxid) for wtxid in range(MAX_PEER_TX_ANNOUNCEMENTS + 1)])) peer.wait_until(lambda: peer.tx_getdata_count == MAX_PEER_TX_ANNOUNCEMENTS) peer.sync_with_ping() with p2p_lock: assert_equal(peer.tx_getdata_count, MAX_PEER_TX_ANNOUNCEMENTS) def test_spurious_notfound(self): self.log.info('Check that spurious notfound is ignored') self.nodes[0].p2ps[0].send_message(msg_notfound(vec=[CInv(MSG_TX, 1)])) def run_test(self): # Run tests without mocktime that only need one peer-connection first, to avoid restarting the nodes self.test_expiry_fallback() self.test_disconnect_fallback() self.test_notfound_fallback() self.test_preferred_inv() self.test_large_inv_batch() self.test_spurious_notfound() # Run each test against new bitcoind instances, as setting mocktimes has long-term effects on when # the next trickle relay event happens. for test in [self.test_in_flight_max, self.test_inv_block, self.test_tx_requests]: self.stop_nodes() self.start_nodes() self.connect_nodes(1, 0) # Setup the p2p connections self.peers = [] for node in self.nodes: for _ in range(NUM_INBOUND): self.peers.append(node.add_p2p_connection(TestP2PConn())) self.log.info("Nodes are setup with {} incoming connections each".format(NUM_INBOUND)) test()if __name__ == '__main__': TxDownloadTest().main()