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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.

bitcoin / bitcoinstable

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▤ addition_overflow.cpp

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bitcoin / src / test / fuzz / txrequest.cpp

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15,548 bytes · SHA-256 b33fa73aee1dce43… · View upstream ↗

251        for (int txhash = 0; txhash < MAX_TXHASHES; ++txhash) {
252            // Mark any expired REQUESTED announcements as COMPLETED.
253            for (int peer2 = 0; peer2 < MAX_PEERS; ++peer2) {
254                Announcement& ann2 = m_announcements[txhash][peer2];
255                if (ann2.m_state == State::REQUESTED && ann2.m_time <= m_now) {
256                    auto gtxid = ann2.m_is_wtxid ? GenTxid{Wtxid::FromUint256(TXHASHES[txhash])} : GenTxid{Txid::FromUint256(TXHASHES[txhash])};
257                    expected_expired.emplace_back(peer2, gtxid);
258                    ann2.m_state = State::COMPLETED;
259                    break;
260                }
261            }
262            // And delete txids with only COMPLETED announcements left.
263            Cleanup(txhash);
264            // CANDIDATEs for which this announcement has the highest priority get returned.
265            const Announcement& ann = m_announcements[txhash][peer];
266            if (ann.m_state == State::CANDIDATE && GetSelected(txhash) == peer) {
267                result.emplace_back(ann.m_sequence, txhash, ann.m_is_wtxid);
268            }
269        }
270        // Sort the results by sequence number.
271        std::sort(result.begin(), result.end());
272        std::sort(expected_expired.begin(), expected_expired.end());
273
274        // Compare with TxRequestTracker's implementation.
275        std::vector<std::pair<NodeId, GenTxid>> expired;
276        const auto actual = m_tracker.GetRequestable(peer, m_now, &expired);
277        std::sort(expired.begin(), expired.end());
278        assert(expired == expected_expired);
279
280        m_tracker.PostGetRequestableSanityCheck(m_now);
281        assert(result.size() == actual.size());
282        for (size_t pos = 0; pos < actual.size(); ++pos) {
283            assert(TXHASHES[std::get<1>(result[pos])] == actual[pos].ToUint256());
284            assert(std::get<2>(result[pos]) == actual[pos].IsWtxid());
285        }
286    }
287
288    void Check()
289    {
290        // Compare CountTracked and CountLoad with naive structure.
291        size_t total = 0;
292        for (int peer = 0; peer < MAX_PEERS; ++peer) {
293            size_t tracked = 0;
294            size_t inflight = 0;
295            size_t candidates = 0;
296            for (int txhash = 0; txhash < MAX_TXHASHES; ++txhash) {
297                tracked += m_announcements[txhash][peer].m_state != State::NOTHING;
298                inflight += m_announcements[txhash][peer].m_state == State::REQUESTED;
299                candidates += m_announcements[txhash][peer].m_state == State::CANDIDATE;
300
301                std::bitset<MAX_PEERS> expected_announcers;
302                for (int peer = 0; peer < MAX_PEERS; ++peer) {
303                    if (m_announcements[txhash][peer].m_state == State::CANDIDATE || m_announcements[txhash][peer].m_state == State::REQUESTED) {
304                        expected_announcers[peer] = true;
305                    }
306                }
307                std::vector<NodeId> candidate_peers;
308                m_tracker.GetCandidatePeers(TXHASHES[txhash], candidate_peers);
309                assert(expected_announcers.count() == candidate_peers.size());
310                for (const auto& peer : candidate_peers) {
311                    assert(expected_announcers[peer]);
312                }
313            }
314            assert(m_tracker.Count(peer) == tracked);
315            assert(m_tracker.CountInFlight(peer) == inflight);
316            assert(m_tracker.CountCandidates(peer) == candidates);
317            total += tracked;
318        }
319        // Compare Size.
320        assert(m_tracker.Size() == total);
321
322        // Invoke internal consistency check of TxRequestTracker object.
323        m_tracker.SanityCheck();
324    }
325};
326} // namespace
327
328FUZZ_TARGET(txrequest)
329{
330    // Tester object (which encapsulates a TxRequestTracker).
331    Tester tester;
332
333    // Decode the input as a sequence of instructions with parameters
334    auto it = buffer.begin();
335    while (it != buffer.end()) {
336        int cmd = *(it++) % 11;
337        int peer, txidnum, delaynum;
338        switch (cmd) {
339        case 0: // Make time jump to the next event (m_time of CANDIDATE or REQUESTED)
340            tester.AdvanceToEvent();
341            break;
342        case 1: // Change time
343            delaynum = it == buffer.end() ? 0 : *(it++);
344            tester.AdvanceTime(DELAYS[delaynum]);
345            break;
346        case 2: // Query for requestable txs
347            peer = it == buffer.end() ? 0 : *(it++) % MAX_PEERS;
348            tester.GetRequestable(peer);
349            break;
350        case 3: // Peer went offline
351            peer = it == buffer.end() ? 0 : *(it++) % MAX_PEERS;
352            tester.DisconnectedPeer(peer);
353            break;
354        case 4: // No longer need tx
355            txidnum = it == buffer.end() ? 0 : *(it++);
356            tester.ForgetTxHash(txidnum % MAX_TXHASHES);
357            break;
358        case 5: // Received immediate preferred inv
359        case 6: // Same, but non-preferred.
360            peer = it == buffer.end() ? 0 : *(it++) % MAX_PEERS;
361            txidnum = it == buffer.end() ? 0 : *(it++);
362            tester.ReceivedInv(peer, txidnum % MAX_TXHASHES, (txidnum / MAX_TXHASHES) & 1, cmd & 1,
363                std::chrono::microseconds::min());
364            break;
365        case 7: // Received delayed preferred inv
366        case 8: // Same, but non-preferred.
367            peer = it == buffer.end() ? 0 : *(it++) % MAX_PEERS;
368            txidnum = it == buffer.end() ? 0 : *(it++);
369            delaynum = it == buffer.end() ? 0 : *(it++);
370            tester.ReceivedInv(peer, txidnum % MAX_TXHASHES, (txidnum / MAX_TXHASHES) & 1, cmd & 1,
371                tester.Now() + DELAYS[delaynum]);
372            break;
373        case 9: // Requested tx from peer
374            peer = it == buffer.end() ? 0 : *(it++) % MAX_PEERS;
375            txidnum = it == buffer.end() ? 0 : *(it++);
376            delaynum = it == buffer.end() ? 0 : *(it++);
377            tester.RequestedTx(peer, txidnum % MAX_TXHASHES, tester.Now() + DELAYS[delaynum]);
378            break;
379        case 10: // Received response
380            peer = it == buffer.end() ? 0 : *(it++) % MAX_PEERS;
381            txidnum = it == buffer.end() ? 0 : *(it++);
382            tester.ReceivedResponse(peer, txidnum % MAX_TXHASHES);
383            break;
384        default:
385            assert(false);
386        }
387    }
388    tester.Check();
389}
390

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440 guided files · 2,580 pending. Guides cover key sections, not every line.

cmake/bitcoin-build-config.h.in src/consensus/amount.h src/consensus/consensus.h src/primitives/block.h src/primitives/transaction.h src/crypto/sha256.h src/util/moneystr.h src/clientversion.h src/uint256.h src/script/script.h src/policy/policy.h CMakeLists.txt README.md COPYING src/consensus/tx_check.cpp src/consensus/tx_verify.cpp src/consensus/merkle.cpp src/pow.cpp src/validation.cpp src/script/interpreter.cpp src/script/solver.cpp src/script/sign.cpp src/key_io.cpp src/net.cpp src/net_processing.cpp src/netaddress.cpp src/protocol.h src/wallet/wallet.cpp src/wallet/spend.cpp

← Previous 250 linesCode page 2

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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