1 #!/usr/bin/env python3
2 # Copyright (c) 2019-present 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 p2p blocksonly mode & block-relay-only connections."""
6 7 import time
8 9 from test_framework.messages import msg_tx, msg_inv, CInv, MSG_WTX
10 from test_framework.p2p import P2PInterface, P2PTxInvStore
11 from test_framework.test_framework import BitcoinTestFramework
12 from test_framework.util import assert_equal
13 from test_framework.wallet import MiniWallet
14 15 16 class P2PBlocksOnly(BitcoinTestFramework):
17 def set_test_params(self):
18 self.num_nodes = 1
19 self.extra_args = [["-blocksonly"]]
20 21 def run_test(self):
22 self.miniwallet = MiniWallet(self.nodes[0])
23 24 self.blocksonly_mode_tests()
25 self.blocks_relay_conn_tests()
26 27 def blocksonly_mode_tests(self):
28 self.log.info("Tests with node running in -blocksonly mode")
29 assert_equal(self.nodes[0].getnetworkinfo()['localrelay'], False)
30 31 self.nodes[0].add_p2p_connection(P2PInterface())
32 tx, txid, wtxid, tx_hex = self.check_p2p_tx_violation()
33 34 self.log.info('Check that tx invs also violate the protocol')
35 self.nodes[0].add_p2p_connection(P2PInterface())
36 with self.nodes[0].assert_debug_log(['transaction (0000000000000000000000000000000000000000000000000000000000001234) inv sent in violation of protocol, disconnecting peer']):
37 self.nodes[0].p2ps[0].send_without_ping(msg_inv([CInv(t=MSG_WTX, h=0x1234)]))
38 self.nodes[0].p2ps[0].wait_for_disconnect()
39 del self.nodes[0].p2ps[0]
40 41 self.log.info('Check that txs from rpc are not rejected and relayed to other peers')
42 tx_relay_peer = self.nodes[0].add_p2p_connection(P2PInterface())
43 assert_equal(self.nodes[0].getpeerinfo()[0]['relaytxes'], True)
44 45 assert_equal(self.nodes[0].testmempoolaccept([tx_hex])[0]['allowed'], True)
46 with self.nodes[0].assert_debug_log(['received getdata for: wtx {} peer'.format(wtxid)]):
47 self.nodes[0].sendrawtransaction(tx_hex)
48 tx_relay_peer.wait_for_tx(txid)
49 assert_equal(self.nodes[0].getmempoolinfo()['size'], 1)
50 51 self.log.info("Restarting node 0 with relay permission and blocksonly")
52 self.restart_node(0, ["-persistmempool=0", "-whitelist=relay@127.0.0.1", "-blocksonly"])
53 assert_equal(self.nodes[0].getrawmempool(), [])
54 first_peer = self.nodes[0].add_p2p_connection(P2PInterface())
55 second_peer = self.nodes[0].add_p2p_connection(P2PInterface())
56 peer_1_info = self.nodes[0].getpeerinfo()[0]
57 assert_equal(peer_1_info['permissions'], ['relay'])
58 assert_equal(first_peer.relay, 1)
59 peer_2_info = self.nodes[0].getpeerinfo()[1]
60 assert_equal(peer_2_info['permissions'], ['relay'])
61 assert_equal(self.nodes[0].testmempoolaccept([tx_hex])[0]['allowed'], True)
62 63 self.log.info('Check that the tx from first_peer with relay-permission is relayed to others (ie.second_peer)')
64 with self.nodes[0].assert_debug_log(["received getdata"]):
65 # Note that normally, first_peer would never send us transactions since we're a blocksonly node.
66 # By activating blocksonly, we explicitly tell our peers that they should not send us transactions,
67 # and Bitcoin Core respects that choice and will not send transactions.
68 # But if, for some reason, first_peer decides to relay transactions to us anyway, we should relay them to
69 # second_peer since we gave relay permission to first_peer.
70 # See https://github.com/bitcoin/bitcoin/issues/19943 for details.
71 first_peer.send_without_ping(msg_tx(tx))
72 self.log.info('Check that the peer with relay-permission is still connected after sending the transaction')
73 assert_equal(first_peer.is_connected, True)
74 second_peer.wait_for_tx(txid)
75 assert_equal(self.nodes[0].getmempoolinfo()['size'], 1)
76 self.log.info("Relay-permission peer's transaction is accepted and relayed")
77 78 self.nodes[0].disconnect_p2ps()
79 self.generate(self.nodes[0], 1)
80 81 def blocks_relay_conn_tests(self):
82 self.log.info('Tests with node in normal mode with block-relay-only connections')
83 self.restart_node(0, ["-noblocksonly"]) # disables blocks only mode
84 assert_equal(self.nodes[0].getnetworkinfo()['localrelay'], True)
85 86 # Ensure we disconnect if a block-relay-only connection sends us a transaction
87 self.nodes[0].add_outbound_p2p_connection(P2PInterface(), p2p_idx=0, connection_type="block-relay-only")
88 assert_equal(self.nodes[0].getpeerinfo()[0]['relaytxes'], False)
89 _, txid, _, tx_hex = self.check_p2p_tx_violation()
90 91 self.log.info("Tests with node in normal mode with block-relay-only connection, sending an inv")
92 conn = self.nodes[0].add_outbound_p2p_connection(P2PInterface(), p2p_idx=0, connection_type="block-relay-only")
93 assert_equal(self.nodes[0].getpeerinfo()[0]['relaytxes'], False)
94 self.check_p2p_inv_violation(conn)
95 96 self.log.info("Check that txs from RPC are not sent to blockrelay connection")
97 conn = self.nodes[0].add_outbound_p2p_connection(P2PTxInvStore(), p2p_idx=1, connection_type="block-relay-only")
98 99 self.nodes[0].sendrawtransaction(tx_hex)
100 101 # Bump time forward to ensure m_next_inv_send_time timer pops
102 self.nodes[0].setmocktime(int(time.time()) + 60)
103 104 conn.sync_with_ping()
105 assert int(txid, 16) not in conn.get_invs()
106 107 def check_p2p_inv_violation(self, peer):
108 self.log.info("Check that tx-invs from P2P are rejected and result in disconnect")
109 with self.nodes[0].assert_debug_log(["inv sent in violation of protocol, disconnecting peer"]):
110 peer.send_without_ping(msg_inv([CInv(t=MSG_WTX, h=0x12345)]))
111 peer.wait_for_disconnect()
112 self.nodes[0].disconnect_p2ps()
113 114 def check_p2p_tx_violation(self):
115 self.log.info('Check that txs from P2P are rejected and result in disconnect')
116 spendtx = self.miniwallet.create_self_transfer()
117 118 with self.nodes[0].assert_debug_log(['transaction sent in violation of protocol, disconnecting peer=0']):
119 self.nodes[0].p2ps[0].send_without_ping(msg_tx(spendtx['tx']))
120 self.nodes[0].p2ps[0].wait_for_disconnect()
121 assert_equal(self.nodes[0].getmempoolinfo()['size'], 0)
122 self.nodes[0].disconnect_p2ps()
123 124 return spendtx['tx'], spendtx['txid'], spendtx['wtxid'], spendtx['hex']
125 126 127 if __name__ == '__main__':
128 P2PBlocksOnly(__file__).main()
129