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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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bitcoin / src / test / fuzz / txorphan.cpp

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501    /** Consume a NodeId from provider. */
502    auto read_peer_fn = [&]() -> NodeId { return provider.ConsumeIntegralInRange<unsigned>(0, NUM_PEERS - 1); };
503    /** Consume both a transaction (index into txn) and a NodeId from provider. */
504    auto read_tx_peer_fn = [&]() -> std::pair<unsigned, NodeId> {
505        auto code = provider.ConsumeIntegralInRange<unsigned>(0, NUM_TX * NUM_PEERS - 1);
506        return {code % NUM_TX, code / NUM_TX};
507    };
508    /** Determine if we have any announcements of the given transaction in the simulation. */
509    auto have_tx_fn = [&](unsigned tx) -> bool {
510        for (auto& ann : sim_announcements) {
511            if (ann.tx == tx) return true;
512        }
513        return false;
514    };
515    /** Count the number of peers in the simulation. */
516    auto count_peers_fn = [&]() -> unsigned {
517        std::bitset<NUM_PEERS> mask;
518        for (auto& ann : sim_announcements) {
519            mask.set(ann.announcer);
520        }
521        return mask.count();
522    };
523    /** Determine if we have any reconsiderable announcements of a given transaction. */
524    auto have_reconsiderable_fn = [&](unsigned tx) -> bool {
525        for (auto& ann : sim_announcements) {
526            if (ann.reconsider && ann.tx == tx) return true;
527        }
528        return false;
529    };
530    /** Determine if a peer has any transactions to reconsider. */
531    auto have_reconsider_fn = [&](NodeId peer) -> bool {
532        for (auto& ann : sim_announcements) {
533            if (ann.reconsider && ann.announcer == peer) return true;
534        }
535        return false;
536    };
537    /** Get an iterator to an existing (wtxid, peer) pair in the simulation. */
538    auto find_announce_wtxid_fn = [&](const Wtxid& wtxid, NodeId peer) -> std::vector<SimAnnouncement>::iterator {
539        for (auto it = sim_announcements.begin(); it != sim_announcements.end(); ++it) {
540            if (txn[it->tx]->GetWitnessHash() == wtxid && it->announcer == peer) return it;
541        }
542        return sim_announcements.end();
543    };
544    /** Get an iterator to an existing (tx, peer) pair in the simulation. */
545    auto find_announce_fn = [&](unsigned tx, NodeId peer) {
546        for (auto it = sim_announcements.begin(); it != sim_announcements.end(); ++it) {
547            if (it->tx == tx && it->announcer == peer) return it;
548        }
549        return sim_announcements.end();
550    };
551    /** Compute a peer's DoS score according to simulation data. */
552    auto dos_score_fn = [&](NodeId peer, int32_t max_count, int32_t max_usage) -> FeeFrac {
553        int64_t count{0};
554        int64_t usage{0};
555        for (auto& ann : sim_announcements) {
556            if (ann.announcer != peer) continue;
557            count += 1 + (txn[ann.tx]->vin.size() / 10);
558            usage += GetTransactionWeight(*txn[ann.tx]);
559        }
560        return std::max<ByRatioNegSize<FeeFrac>>(FeeFrac{count, max_count}, FeeFrac{usage, max_usage});
561    };
562
563    //
564    // 5. Run through a scenario of mutators on both real and simulated orphanage.
565    //
566
567    LIMITED_WHILE (provider.remaining_bytes() > 0, 200) {
568        int command = provider.ConsumeIntegralInRange<uint8_t>(0, 15);
569        while (true) {
570            if (sim_announcements.size() < MAX_ANN && command-- == 0) {
571                // AddTx
572                auto [tx, peer] = read_tx_peer_fn();
573                bool added = real->AddTx(txn[tx], peer);
574                bool sim_have_tx = have_tx_fn(tx);
575                assert(added == !sim_have_tx);
576                if (find_announce_fn(tx, peer) == sim_announcements.end()) {
577                    sim_announcements.emplace_back(tx, peer, false);
578                }
579                break;
580            } else if (sim_announcements.size() < MAX_ANN && command-- == 0) {
581                // AddAnnouncer
582                auto [tx, peer] = read_tx_peer_fn();
583                bool added = real->AddAnnouncer(txn[tx]->GetWitnessHash(), peer);
584                bool sim_have_tx = have_tx_fn(tx);
585                auto sim_it = find_announce_fn(tx, peer);
586                assert(added == (sim_it == sim_announcements.end() && sim_have_tx));
587                if (added) {
588                    sim_announcements.emplace_back(tx, peer, false);
589                }
590                break;
591            } else if (command-- == 0) {
592                // EraseTx
593                auto tx = read_tx_fn();
594                bool erased = real->EraseTx(txn[tx]->GetWitnessHash());
595                bool sim_have = have_tx_fn(tx);
596                assert(erased == sim_have);
597                std::erase_if(sim_announcements, [&](auto& ann) { return ann.tx == tx; });
598                break;
599            } else if (command-- == 0) {
600                // EraseForPeer
601                auto peer = read_peer_fn();
602                real->EraseForPeer(peer);
603                std::erase_if(sim_announcements, [&](auto& ann) { return ann.announcer == peer; });
604                break;
605            } else if (command-- == 0) {
606                // EraseForBlock
607                auto pattern = provider.ConsumeIntegralInRange<uint64_t>(0, (uint64_t{1} << NUM_TX) - 1);
608                CBlock block;
609                std::set<COutPoint> spent;
610                for (unsigned tx = 0; tx < NUM_TX; ++tx) {
611                    if ((pattern >> tx) & 1) {
612                        block.vtx.emplace_back(txn[tx]);
613                        for (auto& txin : block.vtx.back()->vin) {
614                            spent.insert(txin.prevout);
615                        }
616                    }
617                }
618                std::shuffle(block.vtx.begin(), block.vtx.end(), rng);
619                real->EraseForBlock(block);
620                std::erase_if(sim_announcements, [&](auto& ann) {
621                    for (auto& txin : txn[ann.tx]->vin) {
622                        if (spent.contains(txin.prevout)) return true;
623                    }
624                    return false;
625                });
626                break;
627            } else if (command-- == 0) {
628                // AddChildrenToWorkSet
629                auto tx = read_tx_fn();
630                FastRandomContext rand_ctx(rng.rand256());
631                auto added = real->AddChildrenToWorkSet(*txn[tx], rand_ctx);
632                /** Set of not-already-reconsiderable child wtxids. */
633                std::set<Wtxid> child_wtxids;
634                for (unsigned child_tx = 0; child_tx < NUM_TX; ++child_tx) {
635                    if (!have_tx_fn(child_tx)) continue;
636                    if (have_reconsiderable_fn(child_tx)) continue;
637                    bool child_of = false;
638                    for (auto& txin : txn[child_tx]->vin) {
639                        if (txin.prevout.hash == txn[tx]->GetHash()) {
640                            child_of = true;
641                            break;
642                        }
643                    }
644                    if (child_of) {
645                        child_wtxids.insert(txn[child_tx]->GetWitnessHash());
646                    }
647                }
648                for (auto& [wtxid, peer] : added) {
649                    // Wtxid must be a child of tx that is not yet reconsiderable.
650                    auto child_wtxid_it = child_wtxids.find(wtxid);
651                    assert(child_wtxid_it != child_wtxids.end());
652                    // Announcement must exist.
653                    auto sim_ann_it = find_announce_wtxid_fn(wtxid, peer);
654                    assert(sim_ann_it != sim_announcements.end());
655                    // Announcement must not yet be reconsiderable.
656                    assert(sim_ann_it->reconsider == false);
657                    // Make reconsiderable.
658                    sim_ann_it->reconsider = true;
659                    // Remove from child_wtxids map, to disallow it being reported a second time in added.
660                    child_wtxids.erase(wtxid);
661                }
662                // Verify that AddChildrenToWorkSet does not select announcements that were already reconsiderable:
663                // Check all child wtxids which did not occur at least once in the result were already reconsiderable
664                // due to a previous AddChildrenToWorkSet.
665                assert(child_wtxids.empty());
666                break;
667            } else if (command-- == 0) {
668                // GetTxToReconsider.
669                auto peer = read_peer_fn();
670                auto result = real->GetTxToReconsider(peer);
671                if (result) {
672                    // A transaction was found. It must have a corresponding reconsiderable
673                    // announcement from peer.
674                    auto sim_ann_it = find_announce_wtxid_fn(result->GetWitnessHash(), peer);
675                    assert(sim_ann_it != sim_announcements.end());
676                    assert(sim_ann_it->announcer == peer);
677                    assert(sim_ann_it->reconsider);
678                    // Make it non-reconsiderable.
679                    sim_ann_it->reconsider = false;
680                } else {
681                    // No reconsiderable transaction was found from peer. Verify that it does not
682                    // have any.
683                    assert(!have_reconsider_fn(peer));
684                }
685                break;
686            }
687        }
688        // Always trim after each command if needed.
689        const auto max_ann = max_global_latency_score / std::max<unsigned>(1, count_peers_fn());
690        const auto max_mem = reserved_peer_usage;
691        while (true) {
692            // Count global usage and number of peers.
693            node::TxOrphanage::Usage total_usage{0};
694            node::TxOrphanage::Count total_latency_score = sim_announcements.size();
695            for (unsigned tx = 0; tx < NUM_TX; ++tx) {
696                if (have_tx_fn(tx)) {
697                    total_usage += GetTransactionWeight(*txn[tx]);
698                    total_latency_score += txn[tx]->vin.size() / 10;
699                }
700            }
701            auto num_peers = count_peers_fn();
702            bool oversized = (total_usage > reserved_peer_usage * num_peers) ||
703                                (total_latency_score > real->MaxGlobalLatencyScore());
704            if (!oversized) break;
705            // Find worst peer.
706            FeeFrac worst_dos_score{0, 1};
707            unsigned worst_peer = unsigned(-1);
708            for (unsigned peer = 0; peer < NUM_PEERS; ++peer) {
709                auto dos_score = dos_score_fn(peer, max_ann, max_mem);
710                // Use >= so that the more recent peer (higher NodeId) wins in case of
711                // ties.
712                if (ByRatioNegSize{dos_score} >= ByRatioNegSize{worst_dos_score}) {
713                    worst_dos_score = dos_score;
714                    worst_peer = peer;
715                }
716            }
717            assert(worst_peer != unsigned(-1));
718            assert(ByRatio{worst_dos_score} > ByRatio{FeeFrac(1, 1)});
719            // Find oldest announcement from worst_peer, preferring non-reconsiderable ones.
720            bool done{false};
721            for (int reconsider = 0; reconsider < 2; ++reconsider) {
722                for (auto it = sim_announcements.begin(); it != sim_announcements.end(); ++it) {
723                    if (it->announcer != worst_peer || it->reconsider != reconsider) continue;
724                    sim_announcements.erase(it);
725                    done = true;
726                    break;
727                }
728                if (done) break;
729            }
730            assert(done);
731        }
732        // We must now be within limits, otherwise LimitOrphans should have continued further.
733        // We don't check the contents of the orphanage until the end to make fuzz runs faster.
734        assert(real->TotalLatencyScore() <= real->MaxGlobalLatencyScore());
735        assert(real->TotalOrphanUsage() <= real->MaxGlobalUsage());
736    }
737
738    //
739    // 6. Perform a full comparison between the real orphanage's inspectors and the simulation.
740    //
741
742    real->SanityCheck();
743
744
745    auto all_orphans = real->GetOrphanTransactions();
746    node::TxOrphanage::Usage orphan_usage{0};
747    std::vector<node::TxOrphanage::Usage> usage_by_peer(NUM_PEERS);
748    node::TxOrphanage::Count unique_orphans{0};
749    std::vector<node::TxOrphanage::Count> count_by_peer(NUM_PEERS);
750    node::TxOrphanage::Count total_latency_score = sim_announcements.size();

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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 3Next 250 lines →

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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