1  #!/usr/bin/env python3
 2  # Copyright (c) 2020-2021 The Bitcoin Core developers
 3  # Distributed under the MIT software license, see the accompanying
 4  # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 5  """Test transaction relay behavior during IBD:
 6  - Set fee filters to MAX_MONEY
 7  - Don't request transactions
 8  - Ignore all transaction messages
 9  """
10  
11  from decimal import Decimal
12  import time
13  
14  from test_framework.messages import (
15          CInv,
16          COIN,
17          CTransaction,
18          from_hex,
19          msg_inv,
20          msg_tx,
21          MSG_WTX,
22  )
23  from test_framework.p2p import (
24          NONPREF_PEER_TX_DELAY,
25          P2PDataStore,
26          P2PInterface,
27          p2p_lock
28  )
29  from test_framework.test_framework import BitcoinTestFramework
30  
31  MAX_FEE_FILTER = Decimal(9170997) / COIN
32  NORMAL_FEE_FILTER = Decimal(100) / COIN
33  
34  
35  class P2PIBDTxRelayTest(BitcoinTestFramework):
36      def set_test_params(self):
37          self.setup_clean_chain = True
38          self.num_nodes = 2
39          self.extra_args = [
40              ["-minrelaytxfee={}".format(NORMAL_FEE_FILTER)],
41              ["-minrelaytxfee={}".format(NORMAL_FEE_FILTER)],
42          ]
43  
44      def run_test(self):
45          self.log.info("Check that nodes set minfilter to MAX_MONEY while still in IBD")
46          for node in self.nodes:
47              assert node.getblockchaininfo()['initialblockdownload']
48              self.wait_until(lambda: all(peer['minfeefilter'] == MAX_FEE_FILTER for peer in node.getpeerinfo()))
49  
50          self.log.info("Check that nodes don't send getdatas for transactions while still in IBD")
51          peer_inver = self.nodes[0].add_p2p_connection(P2PDataStore())
52          txid = 0xdeadbeef
53          peer_inver.send_and_ping(msg_inv([CInv(t=MSG_WTX, h=txid)]))
54          # The node should not send a getdata, but if it did, it would first delay 2 seconds
55          self.nodes[0].setmocktime(int(time.time() + NONPREF_PEER_TX_DELAY))
56          peer_inver.sync_with_ping()
57          with p2p_lock:
58              assert txid not in peer_inver.getdata_requests
59          self.nodes[0].disconnect_p2ps()
60  
61          self.log.info("Check that nodes don't process unsolicited transactions while still in IBD")
62          # A transaction hex pulled from tx_valid.json. There are no valid transactions since no UTXOs
63          # exist yet, but it should be a well-formed transaction.
64          rawhex = "0100000001b14bdcbc3e01bdaad36cc08e81e69c82e1060bc14e518db2b49aa43ad90ba260000000004a01ff473" + \
65              "04402203f16c6f40162ab686621ef3000b04e75418a0c0cb2d8aebeac894ae360ac1e780220ddc15ecdfc3507ac48e168" + \
66              "1a33eb60996631bf6bf5bc0a0682c4db743ce7ca2b01ffffffff0140420f00000000001976a914660d4ef3a743e3e696a" + \
67              "d990364e555c271ad504b88ac00000000"
68          assert self.nodes[1].decoderawtransaction(rawhex) # returns a dict, should not throw
69          tx = from_hex(CTransaction(), rawhex)
70          peer_txer = self.nodes[0].add_p2p_connection(P2PInterface())
71          with self.nodes[0].assert_debug_log(expected_msgs=["received: tx"], unexpected_msgs=["was not accepted"]):
72              peer_txer.send_and_ping(msg_tx(tx))
73          self.nodes[0].disconnect_p2ps()
74  
75          # Come out of IBD by generating a block
76          self.generate(self.nodes[0], 1)
77  
78          self.log.info("Check that nodes reset minfilter after coming out of IBD")
79          for node in self.nodes:
80              assert not node.getblockchaininfo()['initialblockdownload']
81              self.wait_until(lambda: all(peer['minfeefilter'] == NORMAL_FEE_FILTER for peer in node.getpeerinfo()))
82  
83          self.log.info("Check that nodes process the same transaction, even when unsolicited, when no longer in IBD")
84          peer_txer = self.nodes[0].add_p2p_connection(P2PInterface())
85          with self.nodes[0].assert_debug_log(expected_msgs=["was not accepted"]):
86              peer_txer.send_and_ping(msg_tx(tx))
87  
88  if __name__ == '__main__':
89      P2PIBDTxRelayTest().main()