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#!/usr/bin/env python3 | ||
# Copyright (c) 2022 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 that transaction announcements are only queued for peers that have | ||
successfully completed the version handshake. | ||
Topology: | ||
tx_originator ----> node[0] <---- spy | ||
We test that a transaction sent by tx_originator is only relayed to spy | ||
if it was received after spy's version handshake completed. | ||
1. Fully connect tx_originator | ||
2. Connect spy (no version handshake) | ||
3. tx_originator sends tx1 | ||
4. spy completes the version handshake | ||
5. tx_originator sends tx2 | ||
6. We check that only tx2 is announced on the spy interface | ||
""" | ||
from test_framework.messages import ( | ||
msg_wtxidrelay, | ||
msg_verack, | ||
msg_tx, | ||
CInv, | ||
MSG_WTX, | ||
) | ||
from test_framework.p2p import ( | ||
P2PInterface, | ||
) | ||
from test_framework.test_framework import BitcoinTestFramework | ||
from test_framework.wallet import MiniWallet | ||
|
||
class P2PTxSpy(P2PInterface): | ||
def __init__(self): | ||
super().__init__() | ||
self.all_invs = [] | ||
|
||
def on_version(self, message): | ||
self.send_message(msg_wtxidrelay()) | ||
|
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def on_inv(self, message): | ||
self.all_invs += message.inv | ||
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def wait_for_inv_match(self, expected_inv): | ||
self.wait_until(lambda: len(self.all_invs) == 1 and self.all_invs[0] == expected_inv) | ||
|
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class TxPrivacyTest(BitcoinTestFramework): | ||
def set_test_params(self): | ||
self.num_nodes = 1 | ||
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||
def run_test(self): | ||
self.wallet = MiniWallet(self.nodes[0]) | ||
self.wallet.rescan_utxos() | ||
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tx_originator = self.nodes[0].add_p2p_connection(P2PInterface()) | ||
spy = self.nodes[0].add_p2p_connection(P2PTxSpy(), wait_for_verack=False) | ||
spy.wait_for_verack() | ||
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# tx_originator sends tx1 | ||
tx1 = self.wallet.create_self_transfer()["tx"] | ||
tx_originator.send_and_ping(msg_tx(tx1)) | ||
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# Spy sends the verack | ||
spy.send_and_ping(msg_verack()) | ||
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# tx_originator sends tx2 | ||
tx2 = self.wallet.create_self_transfer()["tx"] | ||
tx_originator.send_and_ping(msg_tx(tx2)) | ||
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# Spy should only get an inv for the second transaction as the first | ||
# one was received pre-verack with the spy | ||
spy.wait_for_inv_match(CInv(MSG_WTX, tx2.calc_sha256(True))) | ||
|
||
if __name__ == '__main__': | ||
TxPrivacyTest().main() |
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