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

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bitcoin / bitcoinstable

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bitcoin / src / test / net_peer_eviction_tests.cpp

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501            }
502        },
503        /*protected_peer_ids=*/{0, 1, 6},
504        /*unprotected_peer_ids=*/{2, 3, 4, 5},
505        random_context));
506
507    // Combined test: expect having 1 CJDNS, 1 I2P, 1 localhost and 1 onion peer
508    // out of 8 to protect 1 CJDNS, 1 I2P, 0 localhost, 0 onion and 2 other
509    // peers (4 total) sorted by longest uptime; stable sort breaks tie with
510    // array order of CJDNS first.
511    BOOST_CHECK(IsProtected(
512        8, [](NodeEvictionCandidate& c) {
513            c.m_connected = NodeSeconds{std::chrono::seconds{c.id}};
514            c.m_is_local = (c.id == 3);
515            if (c.id == 5) {
516                c.m_network = NET_CJDNS;
517            } else if (c.id == 6) {
518                c.m_network = NET_I2P;
519            } else if (c.id == 3) {
520                c.m_network = NET_ONION;
521            } else {
522                c.m_network = NET_IPV6;
523            }
524        },
525        /*protected_peer_ids=*/{0, 1, 5, 6},
526        /*unprotected_peer_ids=*/{2, 3, 4, 7},
527        random_context));
528
529    // Combined test: expect having 2 CJDNS, 2 I2P, 4 localhost, and 2 onion
530    // peers out of 16 to protect 1 CJDNS, 1 I2P, 1 localhost, 1 onion (4/16
531    // total), plus 4 others for 8 total, sorted by longest uptime.
532    BOOST_CHECK(IsProtected(
533        16, [](NodeEvictionCandidate& c) {
534            c.m_connected = NodeSeconds{std::chrono::seconds{c.id}};
535            c.m_is_local = (c.id > 5);
536            if (c.id == 11 || c.id == 15) {
537                c.m_network = NET_CJDNS;
538            } else if (c.id == 10 || c.id == 14) {
539                c.m_network = NET_I2P;
540            } else if (c.id == 8 || c.id == 9) {
541                c.m_network = NET_ONION;
542            } else {
543                c.m_network = NET_IPV4;
544            }
545        },
546        /*protected_peer_ids=*/{0, 1, 2, 3, 6, 8, 10, 11},
547        /*unprotected_peer_ids=*/{4, 5, 7, 9, 12, 13, 14, 15},
548        random_context));
549
550    // Combined test: expect having 6 CJDNS, 1 I2P, 1 localhost, and 4 onion
551    // peers out of 24 to protect 2 CJDNS, 1 I2P, 1 localhost, and 2 onions (6
552    // total), plus 6 others for 12/24 total, sorted by longest uptime.
553    BOOST_CHECK(IsProtected(
554        24, [](NodeEvictionCandidate& c) {
555            c.m_connected = NodeSeconds{std::chrono::seconds{c.id}};
556            c.m_is_local = (c.id == 13);
557            if (c.id > 17) {
558                c.m_network = NET_CJDNS;
559            } else if (c.id == 17) {
560                c.m_network = NET_I2P;
561            } else if (c.id == 12 || c.id == 14 || c.id == 15 || c.id == 16) {
562                c.m_network = NET_ONION;
563            } else {
564                c.m_network = NET_IPV6;
565            }
566        },
567        /*protected_peer_ids=*/{0, 1, 2, 3, 4, 5, 12, 13, 14, 17, 18, 19},
568        /*unprotected_peer_ids=*/{6, 7, 8, 9, 10, 11, 15, 16, 20, 21, 22, 23},
569        random_context));
570}
571
572// Returns true if any of the node ids in node_ids are selected for eviction.
573bool IsEvicted(std::vector<NodeEvictionCandidate> candidates, const std::unordered_set<NodeId>& node_ids, FastRandomContext& random_context)
574{
575    std::shuffle(candidates.begin(), candidates.end(), random_context);
576    const std::optional<NodeId> evicted_node_id = SelectNodeToEvict(std::move(candidates));
577    if (!evicted_node_id) {
578        return false;
579    }
580    return node_ids.contains(*evicted_node_id);
581}
582
583// Create number_of_nodes random nodes, apply setup function candidate_setup_fn,
584// apply eviction logic and then return true if any of the node ids in node_ids
585// are selected for eviction.
586bool IsEvicted(const int number_of_nodes, std::function<void(NodeEvictionCandidate&)> candidate_setup_fn, const std::unordered_set<NodeId>& node_ids, FastRandomContext& random_context)
587{
588    std::vector<NodeEvictionCandidate> candidates = GetRandomNodeEvictionCandidates(number_of_nodes, random_context);
589    for (NodeEvictionCandidate& candidate : candidates) {
590        candidate_setup_fn(candidate);
591    }
592    return IsEvicted(candidates, node_ids, random_context);
593}
594
595BOOST_AUTO_TEST_CASE(peer_eviction_test)
596{
597    FastRandomContext random_context{true};
598
599    for (int number_of_nodes = 0; number_of_nodes < 200; ++number_of_nodes) {
600        // Four nodes with the highest keyed netgroup values should be
601        // protected from eviction.
602        BOOST_CHECK(!IsEvicted(
603                        number_of_nodes, [number_of_nodes](NodeEvictionCandidate& candidate) {
604                            candidate.nKeyedNetGroup = number_of_nodes - candidate.id;
605                        },
606                        {0, 1, 2, 3}, random_context));
607
608        // Eight nodes with the lowest minimum ping time should be protected
609        // from eviction.
610        BOOST_CHECK(!IsEvicted(
611                        number_of_nodes, [](NodeEvictionCandidate& candidate) {
612                            candidate.m_min_ping_time = std::chrono::microseconds{candidate.id};
613                        },
614                        {0, 1, 2, 3, 4, 5, 6, 7}, random_context));
615
616        // Four nodes that most recently sent us novel transactions accepted
617        // into our mempool should be protected from eviction.
618        BOOST_CHECK(!IsEvicted(
619                        number_of_nodes, [number_of_nodes](NodeEvictionCandidate& candidate) {
620                            candidate.m_last_tx_time = std::chrono::seconds{number_of_nodes - candidate.id};
621                        },
622                        {0, 1, 2, 3}, random_context));
623
624        // Up to eight non-tx-relay peers that most recently sent us novel
625        // blocks should be protected from eviction.
626        BOOST_CHECK(!IsEvicted(
627                        number_of_nodes, [number_of_nodes](NodeEvictionCandidate& candidate) {
628                            candidate.m_last_block_time = std::chrono::seconds{number_of_nodes - candidate.id};
629                            if (candidate.id <= 7) {
630                                candidate.m_relay_txs = false;
631                                candidate.fRelevantServices = true;
632                            }
633                        },
634                        {0, 1, 2, 3, 4, 5, 6, 7}, random_context));
635
636        // Four peers that most recently sent us novel blocks should be
637        // protected from eviction.
638        BOOST_CHECK(!IsEvicted(
639                        number_of_nodes, [number_of_nodes](NodeEvictionCandidate& candidate) {
640                            candidate.m_last_block_time = std::chrono::seconds{number_of_nodes - candidate.id};
641                        },
642                        {0, 1, 2, 3}, random_context));
643
644        // Combination of the previous two tests.
645        BOOST_CHECK(!IsEvicted(
646                        number_of_nodes, [number_of_nodes](NodeEvictionCandidate& candidate) {
647                            candidate.m_last_block_time = std::chrono::seconds{number_of_nodes - candidate.id};
648                            if (candidate.id <= 7) {
649                                candidate.m_relay_txs = false;
650                                candidate.fRelevantServices = true;
651                            }
652                        },
653                        {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}, random_context));
654
655        // Combination of all tests above.
656        BOOST_CHECK(!IsEvicted(
657                        number_of_nodes, [number_of_nodes](NodeEvictionCandidate& candidate) {
658                            candidate.nKeyedNetGroup = number_of_nodes - candidate.id;           // 4 protected
659                            candidate.m_min_ping_time = std::chrono::microseconds{candidate.id}; // 8 protected
660                            candidate.m_last_tx_time = std::chrono::seconds{number_of_nodes - candidate.id};    // 4 protected
661                            candidate.m_last_block_time = std::chrono::seconds{number_of_nodes - candidate.id}; // 4 protected
662                        },
663                        {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19}, random_context));
664
665        // An eviction is expected given >= 29 random eviction candidates. The eviction logic protects at most
666        // four peers by net group, eight by lowest ping time, four by last time of novel tx, up to eight non-tx-relay
667        // peers by last novel block time, and four more peers by last novel block time.
668        if (number_of_nodes >= 29) {
669            BOOST_CHECK(SelectNodeToEvict(GetRandomNodeEvictionCandidates(number_of_nodes, random_context)));
670        }
671
672        // No eviction is expected given <= 20 random eviction candidates. The eviction logic protects at least
673        // four peers by net group, eight by lowest ping time, four by last time of novel tx and four peers by last
674        // novel block time.
675        if (number_of_nodes <= 20) {
676            BOOST_CHECK(!SelectNodeToEvict(GetRandomNodeEvictionCandidates(number_of_nodes, random_context)));
677        }
678
679        // Cases left to test:
680        // * "If any remaining peers are preferred for eviction consider only them. [...]"
681        // * "Identify the network group with the most connections and youngest member. [...]"
682    }
683}
684
685BOOST_AUTO_TEST_SUITE_END()
686

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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

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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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