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Stable release v32.1bitcoin/bitcoin · f0de87f04062 ↗3,020 source files · 47.5 MB stored on the server440 file guides

Release published 2026-10-28 · Snapshot fetched 2026-11-01. Latest stable release at fetch time; development branches and Git history are excluded. Only the selected code window and visible folders load here.

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1// Copyright (c) 2025-present The Bitcoin Core developers
2// Distributed under the MIT software license, see the accompanying
3// file COPYING or http://www.opensource.org/licenses/mit-license.php.
4
5#include <primitives/transaction.h>
6#include <private_broadcast.h>
7#include <test/util/setup_common.h>
8#include <test/util/time.h>
9#include <util/time.h>
10
11#include <algorithm>
12#include <ostream>
13#include <boost/test/unit_test.hpp>
14
15std::ostream& operator<<(std::ostream& os, PrivateBroadcast::AddResult r)
16{
17    switch (r) {
18    case PrivateBroadcast::AddResult::Added: return os << "Added";
19    case PrivateBroadcast::AddResult::AlreadyPresent: return os << "AlreadyPresent";
20    case PrivateBroadcast::AddResult::QueueFull: return os << "QueueFull";
21    } // no default case, so the compiler can warn about missing cases
22    assert(false);
23}
24
25BOOST_FIXTURE_TEST_SUITE(private_broadcast_tests, BasicTestingSetup)
26
27static CTransactionRef MakeDummyTx(uint32_t id, size_t num_witness)
28{
29    CMutableTransaction mtx;
30    mtx.vin.resize(1);
31    mtx.vin[0].nSequence = id;
32    if (num_witness > 0) {
33        mtx.vin[0].scriptWitness = CScriptWitness{};
34        mtx.vin[0].scriptWitness.stack.resize(num_witness);
35    }
36    return MakeTransactionRef(mtx);
37}
38
39BOOST_AUTO_TEST_CASE(basic)
40{
41    FakeNodeClock clock{};
42
43    PrivateBroadcast pb;
44    const NodeId recipient1{1};
45    in_addr ipv4Addr;
46    ipv4Addr.s_addr = 0xa0b0c001;
47    const CService addr1{ipv4Addr, 1111};
48
49    // No transactions initially.
50    BOOST_CHECK(!pb.PickTxForSend(/*will_send_to_nodeid=*/recipient1, /*will_send_to_address=*/addr1).has_value());
51    BOOST_CHECK_EQUAL(pb.GetStale().size(), 0);
52    BOOST_CHECK(!pb.HavePendingTransactions());
53    BOOST_CHECK_EQUAL(pb.GetBroadcastInfo().size(), 0);
54
55    // Make a transaction and add it.
56    const auto tx1{MakeDummyTx(/*id=*/1, /*num_witness=*/0)};
57
58    BOOST_CHECK_EQUAL(pb.Add(tx1), PrivateBroadcast::AddResult::Added);
59    BOOST_CHECK_EQUAL(pb.Add(tx1), PrivateBroadcast::AddResult::AlreadyPresent);
60
61    // Make another transaction with same txid, different wtxid and add it.
62    const auto tx2{MakeDummyTx(/*id=*/1, /*num_witness=*/1)};
63    BOOST_REQUIRE(tx1->GetHash() == tx2->GetHash());
64    BOOST_REQUIRE(tx1->GetWitnessHash() != tx2->GetWitnessHash());
65
66    BOOST_CHECK_EQUAL(pb.Add(tx2), PrivateBroadcast::AddResult::Added);
67    const auto find_tx_info{[](auto& infos, const CTransactionRef& tx) -> const PrivateBroadcast::TxBroadcastInfo& {
68        const auto it{std::ranges::find(infos, tx->GetWitnessHash(), [](const auto& info) { return info.tx->GetWitnessHash(); })};
69        BOOST_REQUIRE(it != infos.end());
70        return *it;
71    }};
72    const auto check_peer_counts{[&](size_t tx1_peer_count, size_t tx2_peer_count) {
73        const auto infos{pb.GetBroadcastInfo()};
74        BOOST_CHECK_EQUAL(infos.size(), 2);
75        BOOST_CHECK_EQUAL(find_tx_info(infos, tx1).peers.size(), tx1_peer_count);
76        BOOST_CHECK_EQUAL(find_tx_info(infos, tx2).peers.size(), tx2_peer_count);
77    }};
78
79    check_peer_counts(/*tx1_peer_count=*/0, /*tx2_peer_count=*/0);
80
81    const auto tx_for_recipient1{pb.PickTxForSend(/*will_send_to_nodeid=*/recipient1, /*will_send_to_address=*/addr1).value()};
82    BOOST_CHECK(tx_for_recipient1 == tx1 || tx_for_recipient1 == tx2);
83
84    // A second pick must return the other transaction.
85    const NodeId recipient2{2};
86    const CService addr2{ipv4Addr, 2222};
87    const auto tx_for_recipient2{pb.PickTxForSend(/*will_send_to_nodeid=*/recipient2, /*will_send_to_address=*/addr2).value()};
88    BOOST_CHECK(tx_for_recipient2 == tx1 || tx_for_recipient2 == tx2);
89    BOOST_CHECK_NE(tx_for_recipient1, tx_for_recipient2);
90
91    check_peer_counts(/*tx1_peer_count=*/1, /*tx2_peer_count=*/1);
92
93    const NodeId nonexistent_recipient{0};
94
95    // Confirm transactions <-> recipients mapping is correct.
96    BOOST_CHECK(!pb.GetTxForNode(nonexistent_recipient).has_value());
97    BOOST_CHECK_EQUAL(pb.GetTxForNode(recipient1).value(), tx_for_recipient1);
98    BOOST_CHECK_EQUAL(pb.GetTxForNode(recipient2).value(), tx_for_recipient2);
99
100    // Confirm none of the transactions' reception have been confirmed.
101    for (const auto& info : pb.GetBroadcastInfo()) {
102        BOOST_CHECK(std::ranges::none_of(info.peers, [](const auto& peer) { return peer.received.has_value(); }));
103    }
104
105    // 1. Freshly added transactions should NOT be stale yet.
106    BOOST_CHECK_EQUAL(pb.GetStale().size(), 0);
107
108    // 2. Fast-forward the mock clock past the INITIAL_STALE_DURATION.
109    clock += PrivateBroadcast::INITIAL_STALE_DURATION + 1min;
110
111    // 3. Now that the initial duration has passed, both unconfirmed transactions should be stale.
112    BOOST_CHECK_EQUAL(pb.GetStale().size(), 2);
113
114    // Confirm reception by recipient1.
115    pb.NodeConfirmedReception(nonexistent_recipient); // Dummy call.
116    pb.NodeConfirmedReception(recipient1);
117
118    const auto infos{pb.GetBroadcastInfo()};
119    BOOST_CHECK_EQUAL(infos.size(), 2);
120    {
121        const auto& peers{find_tx_info(infos, tx_for_recipient1).peers};
122        BOOST_CHECK_EQUAL(peers.size(), 1);
123        BOOST_CHECK_EQUAL(peers[0].address.ToStringAddrPort(), addr1.ToStringAddrPort());
124        BOOST_CHECK(peers[0].received.has_value());
125    }
126    {
127        const auto& peers{find_tx_info(infos, tx_for_recipient2).peers};
128        BOOST_CHECK_EQUAL(peers.size(), 1);
129        BOOST_CHECK_EQUAL(peers[0].address.ToStringAddrPort(), addr2.ToStringAddrPort());
130        BOOST_CHECK(!peers[0].received.has_value());
131    }
132
133    const auto stale_state{pb.GetStale()};
134    BOOST_CHECK_EQUAL(stale_state.size(), 1);
135    BOOST_CHECK_EQUAL(stale_state[0], tx_for_recipient2);
136
137    clock += 10h;
138
139    BOOST_CHECK_EQUAL(pb.GetStale().size(), 2);
140
141    BOOST_CHECK_EQUAL(pb.Remove(tx_for_recipient1).value(), 2);
142    BOOST_CHECK(!pb.Remove(tx_for_recipient1).has_value());
143    BOOST_CHECK_EQUAL(pb.Remove(tx_for_recipient2).value(), 2);
144    BOOST_CHECK(!pb.Remove(tx_for_recipient2).has_value());
145
146    BOOST_CHECK_EQUAL(pb.GetBroadcastInfo().size(), 0);
147    const CService addr_nonexistent{ipv4Addr, 3333};
148    BOOST_CHECK(!pb.PickTxForSend(/*will_send_to_nodeid=*/nonexistent_recipient, /*will_send_to_address=*/addr_nonexistent).has_value());
149}
150
151BOOST_AUTO_TEST_CASE(complete_all_initial_sends)
152{
153    PrivateBroadcast pb;
154    const auto tx{MakeDummyTx(/*id=*/1, /*num_witness=*/0)};
155    BOOST_REQUIRE_EQUAL(pb.Add(tx), PrivateBroadcast::AddResult::Added);
156
157    in_addr ipv4_addr;
158    ipv4_addr.s_addr = 0xa0b0c001;
159    const CService address{ipv4_addr, 1111};
160
161    // Pick the first send, then receive the transaction back from the network.
162    BOOST_REQUIRE_EQUAL(pb.PickTxForSend(/*will_send_to_nodeid=*/1, address).value(), tx);
163    BOOST_CHECK_EQUAL(pb.Add(tx), PrivateBroadcast::AddResult::AlreadyPresent);
164    BOOST_REQUIRE(pb.MarkResolved(tx));
165    BOOST_CHECK_EQUAL(pb.Add(tx), PrivateBroadcast::AddResult::AlreadyPresent);
166    BOOST_REQUIRE_EQUAL(pb.GetTxForNode(1).value(), tx);
167    BOOST_CHECK(pb.GetBroadcastInfo().empty());
168
169    // Receipt must not prevent either of the two remaining initial sends.
170    BOOST_REQUIRE_EQUAL(pb.PickTxForSend(/*will_send_to_nodeid=*/2, address).value(), tx);
171    BOOST_REQUIRE_EQUAL(pb.PickTxForSend(/*will_send_to_nodeid=*/3, address).value(), tx);
172
173    BOOST_CHECK_EQUAL(pb.Add(tx), PrivateBroadcast::AddResult::AlreadyPresent);
174    pb.NodeDisconnected(/*nodeid=*/1);
175    BOOST_CHECK(!pb.PickTxForSend(/*will_send_to_nodeid=*/4, address).has_value());
176}
177
178BOOST_AUTO_TEST_CASE(stale_unpicked_tx)
179{
180    FakeNodeClock clock{};
181
182    PrivateBroadcast pb;
183    const auto tx{MakeDummyTx(/*id=*/42, /*num_witness=*/0)};
184    BOOST_REQUIRE_EQUAL(pb.Add(tx), PrivateBroadcast::AddResult::Added);
185
186    // Unpicked transactions use the longer INITIAL_STALE_DURATION.
187    BOOST_CHECK_EQUAL(pb.GetStale().size(), 0);
188    clock += PrivateBroadcast::INITIAL_STALE_DURATION - 1min;
189    BOOST_CHECK_EQUAL(pb.GetStale().size(), 0);
190    clock += 2min;
191    const auto stale_state{pb.GetStale()};
192    BOOST_REQUIRE_EQUAL(stale_state.size(), 1);
193    BOOST_CHECK_EQUAL(stale_state[0], tx);
194}
195
196BOOST_AUTO_TEST_CASE(send_attempt_limit)
197{
198    FakeNodeClock clock{};
199
200    constexpr size_t max_attempts{5};
201    PrivateBroadcast pb{PrivateBroadcast::MAX_TRANSACTIONS, max_attempts};
202    const auto tx{MakeDummyTx(/*id=*/1, /*num_witness=*/0)};
203    BOOST_REQUIRE_EQUAL(pb.Add(tx), PrivateBroadcast::AddResult::Added);
204
205    in_addr ipv4_addr;
206    ipv4_addr.s_addr = 0xa0b0c001;
207    const CService address{ipv4_addr, 1111};
208
209    NodeId node_id{0};
210    for (size_t attempt{0}; attempt < max_attempts; ++attempt) {
211        if (attempt >= PrivateBroadcast::INITIAL_CONNECTION_COUNT) {
212            BOOST_REQUIRE(pb.TryGrantRetry(tx));
213        }
214        BOOST_CHECK(pb.HavePendingTransactions());
215        BOOST_REQUIRE_EQUAL(pb.PickTxForSend(/*will_send_to_nodeid=*/node_id++, address).value(), tx);
216    }
217
218    // The transaction and its complete send history remain available, but no
219    // further connections should be opened for it.
220    BOOST_CHECK(!pb.HavePendingTransactions());
221    BOOST_CHECK(!pb.TryGrantRetry(tx));
222    BOOST_CHECK(!pb.PickTxForSend(/*will_send_to_nodeid=*/node_id++, address).has_value());
223    const auto info{pb.GetBroadcastInfo()};
224    BOOST_REQUIRE_EQUAL(info.size(), 1);
225    BOOST_CHECK_EQUAL(info[0].peers.size(), max_attempts);
226    BOOST_CHECK_EQUAL(info[0].attempts_remaining, 0);
227
228    clock += PrivateBroadcast::INITIAL_STALE_DURATION + 1min;
229    BOOST_CHECK(pb.GetStale().empty());
230
231    // An exhausted transaction does not prevent another transaction from being sent.
232    const auto next_tx{MakeDummyTx(/*id=*/2, /*num_witness=*/0)};
233    BOOST_REQUIRE_EQUAL(pb.Add(next_tx), PrivateBroadcast::AddResult::Added);
234    BOOST_CHECK(pb.HavePendingTransactions());
235    BOOST_REQUIRE_EQUAL(pb.PickTxForSend(/*will_send_to_nodeid=*/node_id++, address).value(), next_tx);
236
237    // Re-adding an exhausted transaction resets its state and starts a fresh
238    // initial stale period.
239    BOOST_REQUIRE_EQUAL(pb.Add(tx), PrivateBroadcast::AddResult::Added);
240    BOOST_CHECK(pb.HavePendingTransactions());
241    BOOST_CHECK(pb.GetStale().empty());
242    const auto reset_info{pb.GetBroadcastInfo()};
243    const auto reset_tx_info{std::ranges::find(reset_info, tx->GetWitnessHash(), [](const auto& entry) { return entry.tx->GetWitnessHash(); })};
244    BOOST_REQUIRE(reset_tx_info != reset_info.end());
245    BOOST_CHECK(reset_tx_info->peers.empty());
246    BOOST_CHECK_EQUAL(reset_tx_info->attempts_remaining, max_attempts);
247    BOOST_REQUIRE_EQUAL(pb.PickTxForSend(/*will_send_to_nodeid=*/node_id++, address).value(), tx);
248}
249
250BOOST_AUTO_TEST_CASE(reset_with_equivalent_transaction_reference)

src/wallet/receive.cpp

src/wallet/coinselection.cpp

src/consensus/validation.h

src/primitives/transaction.cpp

src/script/descriptor.cpp

src/bitcoin-cli.cpp

src/rpc/blockchain.cpp

src/rpc/rawtransaction.cpp

src/init.cpp

src/crypto/sha256.cpp

src/consensus/merkle.h

src/consensus/tx_check.h

src/consensus/tx_verify.h

src/policy/feerate.h

src/policy/feerate.cpp

src/primitives/transaction_identifier.h

src/chainparamsbase.h

src/chainparamsbase.cpp

src/util/moneystr.cpp

src/crypto/ripemd160.h

src/crypto/sha1.h

src/crypto/sha512.h

src/crypto/hmac_sha256.h

src/crypto/hmac_sha512.h

src/crypto/hmac_sha256.cpp

src/crypto/hmac_sha512.cpp

src/crypto/hkdf_sha256_32.h

src/crypto/hkdf_sha256_32.cpp

src/support/cleanse.h

src/support/cleanse.cpp

src/crypto/siphash.cpp

src/crypto/muhash.h

src/crypto/chacha20.h

src/crypto/poly1305.h

src/crypto/chacha20poly1305.h

src/crypto/chacha20poly1305.cpp

src/util/chaintype.cpp

src/util/obfuscation.h

src/util/byte_units.h

src/util/overflow.h

src/blockencodings.cpp

src/net_permissions.cpp

src/policy/packages.cpp

src/policy/rbf.cpp

src/policy/truc_policy.cpp

src/policy/ephemeral_policy.cpp

src/policy/settings.cpp

src/policy/policy.cpp

src/node/transaction.cpp

src/node/coin.cpp

src/rpc/client.cpp

src/rpc/external_signer.cpp

src/rpc/request.cpp

src/rpc/server_util.cpp

src/rpc/fees.cpp

src/rpc/output_script.cpp

src/rpc/rawtransaction_util.cpp

src/rpc/rawtransaction_util.h

src/rpc/register.h

src/rpc/request.h

src/rpc/server_util.h

src/rpc/protocol.h

src/rpc/server.h

src/rpc/signmessage.cpp

src/rpc/txoutproof.cpp

src/rpc/util.cpp

src/rpc/util.h

src/wallet/rpc/addresses.cpp

src/wallet/rpc/backup.cpp

src/wallet/rpc/coins.cpp

src/wallet/rpc/encrypt.cpp

src/wallet/rpc/signmessage.cpp

src/wallet/rpc/util.cpp

src/wallet/rpc/util.h

src/wallet/coincontrol.cpp

src/wallet/coincontrol.h

src/wallet/context.cpp

src/wallet/context.h

src/wallet/crypter.cpp

src/wallet/crypter.h

src/wallet/db.cpp

src/wallet/export.cpp

src/wallet/external_signer_scriptpubkeyman.cpp

src/wallet/rpc/spend.cpp

src/wallet/rpc/transactions.cpp

src/wallet/rpc/wallet.cpp

src/wallet/feebumper.cpp

src/wallet/feebumper.h

src/index/base.h

src/index/base.cpp

src/index/txindex.h

src/index/txindex.cpp

src/index/txindex_key.h

src/index/txospenderindex.h

src/index/txospenderindex.cpp

src/index/blockfilterindex.h

src/index/blockfilterindex.cpp

src/index/coinstatsindex.h

src/index/coinstatsindex.cpp

src/index/db_key.h

src/index/disktxpos.h

src/kernel/chain.cpp

src/kernel/chain.h

src/kernel/checks.cpp

src/kernel/checks.h

src/kernel/context.cpp

src/kernel/context.h

src/kernel/cs_main.cpp

src/kernel/cs_main.h

src/kernel/disconnected_transactions.cpp

src/kernel/disconnected_transactions.h

src/kernel/mempool_removal_reason.cpp

src/kernel/mempool_removal_reason.h

src/kernel/coinstats.cpp

src/kernel/coinstats.h

src/kernel/chainparams.cpp

src/kernel/chainparams.h

src/wallet/sqlite.cpp

src/wallet/sqlite.h

src/wallet/transaction.cpp

src/wallet/transaction.h

src/wallet/dump.cpp

src/wallet/dump.h

src/wallet/init.cpp

src/wallet/walletutil.cpp

src/wallet/walletutil.h

src/wallet/wallettool.cpp

src/wallet/wallettool.h

src/wallet/export.h

src/wallet/migrate.cpp

src/wallet/migrate.h

src/wallet/db.h

src/wallet/walletdb.cpp

src/wallet/interfaces.cpp

src/wallet/scriptpubkeyman.cpp

src/wallet/scriptpubkeyman.h

src/kernel/bitcoinkernel.cpp

src/kernel/bitcoinkernel.h

src/kernel/bitcoinkernel_wrapper.h

src/node/chainstate.cpp

src/node/chainstate.h

src/node/blockstorage.cpp

src/node/blockstorage.h

src/node/mempool_persist.cpp

src/node/mempool_persist.h

src/node/utxo_snapshot.cpp

src/node/utxo_snapshot.h

src/node/kernel_notifications.cpp

src/node/kernel_notifications.h

src/node/blockmanager_args.cpp

src/kernel/blockmanager_opts.h

src/util/expected.cpp

src/policy/settings.h

src/util/types.h

src/kernel/messagestartchars.h

src/kernel/warning.h

src/util/exception.h

src/common/license_info.h

src/node/coins_view_args.h

src/node/database_args.h

src/util/batchpriority.h

src/util/ui_change_type.h

src/node/coins_view_args.cpp

src/node/peerman_args.h

src/util/serfloat.h

src/node/blockmanager_args.h

src/node/database_args.cpp

src/util/overloaded.h

src/interfaces/types.h

src/node/chainstatemanager_args.h

src/node/minisketchwrapper.h

src/util/macros.h

src/util/syserror.h

src/common/run_command.h

src/util/bytevectorhash.cpp

src/node/mempool_persist_args.cpp

src/util/exec.h

src/util/rbf.h

src/crypto/hex_base.h

src/node/mempool_persist_args.h

src/interfaces/echo.h

src/util/any.h

src/util/batchpriority.cpp

src/util/threadnames.h

src/node/coin.h

src/node/mempool_args.h

src/util/asmap.h

src/util/bytevectorhash.h

src/node/context.cpp

src/util/insert.h

src/util/readwritefile.h

src/node/peerman_args.cpp

src/node/interface_ui.cpp

src/interfaces/handler.h

src/node/mining_args.h

src/util/hasher.cpp

src/common/init.h

src/kernel/mempool_limits.h

src/common/system.h

src/crypto/sha3.h

src/util/threadinterrupt.cpp

src/node/protocol_version.h

src/util/exception.cpp

src/common/messages.h

src/node/connection_types.cpp

src/util/bip32.h

src/common/license_info.cpp

src/util/stdmutex.h

src/common/run_command.cpp

src/util/check.cpp

src/util/golombrice.h

src/node/types.h

src/node/timeoffsets.h

src/util/readwritefile.cpp

src/util/fastrange.h

src/util/signalinterrupt.h

src/util/task_runner.h

src/util/syserror.cpp

src/common/interfaces.cpp

src/common/types.h

src/util/threadinterrupt.h

src/kernel/chainstatemanager_opts.h

src/node/psbt.h

src/policy/ephemeral_policy.h

src/util/trace.h

src/common/url.cpp

src/kernel/mempool_options.h

src/util/serfloat.cpp

src/kernel/notifications_interface.h

src/node/timeoffsets.cpp

src/node/warnings.cpp

src/util/hash_type.h

src/crypto/hex_base.cpp

src/node/eviction.h

src/util/tokenbucket.h

src/crypto/aes.h

src/common/pcp.h

src/util/feefrac.cpp

src/node/transaction.h

src/util/threadnames.cpp

src/common/signmessage.h

src/util/exec.cpp

src/util/signalinterrupt.cpp

src/clientversion.cpp

src/common/signmessage.cpp

src/compat/assumptions.h

src/compat/byteswap.h

src/deploymentinfo.cpp

src/deploymentinfo.h

src/deploymentstatus.cpp

src/deploymentstatus.h

src/dummywallet.cpp

src/external_signer.h

src/init/bitcoin-gui.cpp

src/init/bitcoin-node.cpp

src/init/bitcoin-qt.cpp

src/init/bitcoin-wallet.cpp

src/init/bitcoind.cpp

src/init/common.h

src/interfaces/init.h

src/interfaces/ipc.h

src/key_io.h

src/logging/categories.h

src/logging/timer.h

src/mapport.h

src/musig.h

src/net_permissions.h

src/netgroup.h

src/netmessagemaker.h

src/node/chainstatemanager_args.cpp

src/node/connection_types.h

src/node/context.h

src/node/interface_ui.h

src/node/mempool_args.cpp

src/node/mining_args.cpp

src/node/minisketchwrapper.cpp

src/node/txreconciliation.h

src/policy/fees/estimator_args.cpp

src/policy/fees/estimator_args.h

src/policy/fees/estimator_man.cpp

src/policy/fees/estimator_man.h

src/policy/packages.h

src/policy/rbf.h

src/policy/truc_policy.h

src/pow.h

src/primitives/block.cpp

src/randomenv.h

src/rest.h

src/script/keyorigin.h

src/script/parsing.cpp

src/script/parsing.h

src/script/script_error.h

src/script/sigcache.cpp

src/script/sigcache.h

src/script/solver.h

src/script/verify_flags.h

src/semaphore_grant.h

src/signet.h

src/span.h

src/support/allocators/secure.h

src/support/allocators/zeroafterfree.h

src/util/tokenpipe.cpp

src/util/translation.h

src/util/vector.h

src/versionbits.h

src/versionbits_impl.h

src/wallet/external_signer_scriptpubkeyman.h

src/wallet/fees.h

src/wallet/load.h

src/wallet/receive.h

src/wallet/rpc/wallet.h

src/wallet/types.h

src/walletinitinterface.h

src/zmq/zmqabstractnotifier.cpp

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