aboutsummaryrefslogtreecommitdiff
path: root/src/validation.h
AgeCommit message (Collapse)Author
2017-11-02Deprecate confusing blockmaxsize, fix getmininginfo outputMatt Corallo
* This removes block-size-limiting code in favor of GBT clients doing the limiting themselves (if at all). * -blockmaxsize is deprecated and only used to calculate an implied blockmaxweight, addressing confusion from multiple users. * getmininginfo's currentblocksize return value was returning garbage values, and has been removed, also removing a GetSerializeSize call in some block generation inner loops and potentially addressing some performance edge cases. Github-Pull: #11100 Rebased-From: ba206d2c63a8d3cbd4a8dd47e9ef126af1bb3bb9
2017-11-02Disconnect outbound peers relaying invalid headersSuhas Daftuar
Github-Pull: #11568 Rebased-From: 37886d5e2f9992678dea4b1bd893f4f10d61d3ad
2017-11-02Allow setting nMinimumChainWork on command lineSuhas Daftuar
Github-Pull: #10357 Rebased-From: 0311836f6927aec4ba5687ea12af35df3c509682
2017-08-07scripted-diff: Use the C++11 keyword nullptr to denote the pointer literal ↵practicalswift
instead of the macro NULL -BEGIN VERIFY SCRIPT- sed -i 's/\<NULL\>/nullptr/g' src/*.cpp src/*.h src/*/*.cpp src/*/*.h src/qt/*/*.cpp src/qt/*/*.h src/wallet/*/*.cpp src/wallet/*/*.h src/support/allocators/*.h sed -i 's/Prefer nullptr, otherwise SAFECOOKIE./Prefer NULL, otherwise SAFECOOKIE./g' src/torcontrol.cpp sed -i 's/tor: Using nullptr authentication/tor: Using NULL authentication/g' src/torcontrol.cpp sed -i 's/METHODS=nullptr/METHODS=NULL/g' src/test/torcontrol_tests.cpp src/torcontrol.cpp sed -i 's/nullptr certificates/NULL certificates/g' src/qt/paymentserver.cpp sed -i 's/"nullptr"/"NULL"/g' src/torcontrol.cpp src/test/torcontrol_tests.cpp -END VERIFY SCRIPT-
2017-08-01Merge #10758: Fix some chainstate-init-order bugs.Wladimir J. van der Laan
c0025d0 Fix segfault when shutting down before fully loading (Matt Corallo) 1385697 Order chainstate init more logically. (Matt Corallo) ff3a219 Call RewindBlockIndex even if we're about to run -reindex-chainstate (Matt Corallo) b0f3249 More user-friendly error message if UTXO DB runs ahead of block DB (Matt Corallo) eda888e Fix some LoadChainTip-related init-order bugs. (Matt Corallo) Pull request description: This does a number of things to clean up chainstate init order, fixing some issues as it goes: * Order chainstate init more logically - first all of the blocktree-related loading, then coinsdb, then pcoinsTip/chainActive. Only create objects as needed. * More clearly document exactly what is and isn't called in -reindex and -reindex-chainstate both with comments noting calls as no-ops and by adding if guards. * Move the writing of fTxIndex to LoadBlockIndex - this fixes a bug introduced in d6af06d68aae985436cbc942f0d11078041d121b where InitBlockIndex was writing to fTxIndex which had not yet been checked (because LoadChainTip hadn't yet initialized the chainActive, which would otherwise have resulted in InitBlockIndex being a NOP), allowing you to modify -txindex without reindex, potentially corrupting your chainstate! * Rename InitBlockIndex to LoadGenesisBlock, which is now a more natural name for it. Also check mapBlockIndex instead of chainActive, fixing a bug where we'd write the genesis block out on every start. * Move LoadGenesisBlock further down in init. This is a more logical location for it, as it is after all of the blockindex-related loading and checking, but before any of the UTXO-related loading and checking. * Give LoadChainTip a return value - allowing it to indicate that the UTXO DB ran ahead of the block DB. This just provides a nicer error message instead of the previous mysterious assert(!setBlockIndexCandidates.empty()) error. * Calls ActivateBestChain in case we just loaded the genesis block in LoadChainTip, avoiding relying on the ActivateBestChain in ThreadImport before continuing init process. * Move all of the VerifyDB()-related stuff into a -reindex + -reindex-chainstate if guard. It couldn't do anything useful as chainActive.Tip() would be null at this point anyway. Tree-SHA512: 3c96ee7ed44f4130bee3479a40c5cd99a619fda5e309c26d60b54feab9f6ec60fabab8cf47a049c9cf15e88999b2edb7f16cbe6819e97273560b201a89d90762
2017-07-27More user-friendly error message if UTXO DB runs ahead of block DBMatt Corallo
This gives LoadChainTip a return value - allowing it to indicate that the UTXO DB ran ahead of the block DB. This just provides a nicer error message instead of the previous mysterious assert(!setBlockIndexCandidates.empty()) error. This also calls ActivateBestChain in case we just loaded the genesis block in LoadChainTip, avoiding relying on the ActivateBestChain in ThreadImport before continuing init process.
2017-07-27Fix some LoadChainTip-related init-order bugs.Matt Corallo
* Move the writing of fTxIndex to LoadBlockIndex - this fixes a bug introduced in d6af06d68aae985436cbc942f0d11078041d121b where InitBlockIndex was writing to fTxIndex which had not yet been checked (because LoadChainTip hadn't yet initialized the chainActive, which would otherwise have resulted in InitBlockIndex being a NOP), allowing you to modify -txindex without reindex, potentially corrupting your chainstate! * Rename InitBlockIndex to LoadGenesisBlock, which is now a more natural name for it. Also check mapBlockIndex instead of chainActive, fixing a bug where we'd write the genesis block out on every start.
2017-07-18Avoid redundant redeclaration of GetWarnings(const string&)practicalswift
std::string GetWarnings(const std::string& strFor) is declared in warnings.h and defined in warnings.cpp.
2017-06-29Merge #10192: Cache full script execution results in addition to signaturesWladimir J. van der Laan
e3f9c05 Add CheckInputs() unit tests (Suhas Daftuar) a3543af Better document CheckInputs parameter meanings (Matt Corallo) 309ee1a Update -maxsigcachesize doc clarify init logprints for it (Matt Corallo) b014668 Add CheckInputs wrapper CCoinsViewMemPool -> non-consensus-critical (Matt Corallo) eada04e Do not print soft-fork-script warning with -promiscuousmempool (Matt Corallo) b5fea8d Cache full script execution results in addition to signatures (Matt Corallo) 6d22b2b Pull script verify flags calculation out of ConnectBlock (Matt Corallo) Tree-SHA512: 0c6c3c79c64fcb21e17ab60290c5c96d4fac11624c49f841a4201eec21cb480314c52a07d1e3abd4f9c764785cc57bfd178511f495aa0469addb204e96214fe4
2017-06-26Non-atomic flushing using the blockchain as replay journalPieter Wuille
2017-06-20Merge #10503: Use REJECT_DUPLICATE for already known and conflicted txnPieter Wuille
d9bec888f Use REJECT_DUPLICATE for already known and conflicted txn (Pieter Wuille) Tree-SHA512: adc6dc5caed731c3fd5c8784e8820a074e320360cdb5579c5b9299f9799dd99de60b7382d336ab1909dab8b23e744456d78aa0c3b1c8dd1af3d1b779314cf8fa
2017-06-12Remove unnecessary forward class declarations in header filespracticalswift
2017-06-12Merge #10550: Don't return stale data from CCoinsViewCache::Cursor()Wladimir J. van der Laan
3ff1fa8 Use override keyword on CCoinsView overrides (Russell Yanofsky) 24e44c3 Don't return stale data from CCoinsViewCache::Cursor() (Russell Yanofsky) Tree-SHA512: 08699dae0925ffb9c018f02612ac6b7eaf73ec331e2f4f934f1fe25a2ce120735fa38596926e924897c203f7470e99f0a99cf70d2ce31ff428b105e16583a861
2017-06-07Don't return stale data from CCoinsViewCache::Cursor()Russell Yanofsky
CCoinsViewCache doesn't actually support cursor iteration returning the current contents of the cache, so raise an error when the cursor method is called instead of returning a cursor that iterates over stale data. Also update the gettxoutsetinfo RPC which was relying on the old behavior to be explicit about which view it is returning data about.
2017-06-07Cache full script execution results in addition to signaturesMatt Corallo
This adds a new CuckooCache in validation, caching whether all of a transaction's scripts were valid with a given set of script flags. Unlike previous attempts at caching an entire transaction's validity, which have nearly universally introduced consensus failures, this only caches the validity of a transaction's scriptSigs. As these are pure functions of the transaction and data it commits to, this should be much safer. This is somewhat duplicative with the sigcache, as entries in the new cache will also have several entries in the sigcache. However, the sigcache is kept both as ATMP relies on it and because it prevents malleability-based DoS attacks on the new higher-level cache. Instead, the -sigcachesize option is re-used - cutting the sigcache size in half and using the newly freed memory for the script execution cache. Transactions which match the script execution cache never even have entries in the script check thread's workqueue created. Note that the cache is indexed only on the script execution flags and the transaction's witness hash. While this is sufficient to make the CScriptCheck() calls pure functions, this introduces dependancies on the mempool calculating things such as the PrecomputedTransactionData object, filling the CCoinsViewCache, etc in the exact same way as ConnectBlock. I belive this is a reasonable assumption, but should be noted carefully. In a rather naive benchmark (reindex-chainstate up to block 284k with cuckoocache always returning true for contains(), -assumevalid=0 and a very large dbcache), this connected blocks ~1.7x faster.
2017-06-07Use std::unordered_{map,set} (C++11) instead of boost::unordered_{map,set}practicalswift
2017-06-06Make functions in validation.cpp static and pass chainparamsMario Dian
Fix bugs as per PR comment Change bool static to static bool
2017-06-02Use REJECT_DUPLICATE for already known and conflicted txnPieter Wuille
2017-06-01Merge #10195: Switch chainstate db and cache to per-txout modelPieter Wuille
589827975 scripted-diff: various renames for per-utxo consistency (Pieter Wuille) a5e02bc7f Increase travis unit test timeout (Pieter Wuille) 73de2c1ff Rename CCoinsCacheEntry::coins to coin (Pieter Wuille) 119e552f7 Merge CCoinsViewCache's GetOutputFor and AccessCoin (Pieter Wuille) 580b02309 [MOVEONLY] Move old CCoins class to txdb.cpp (Pieter Wuille) 8b25d2c0c Upgrade from per-tx database to per-txout (Pieter Wuille) b2af357f3 Reduce reserved memory space for flushing (Pieter Wuille) 41aa5b79a Pack Coin more tightly (Pieter Wuille) 97072d668 Remove unused CCoins methods (Pieter Wuille) ce23efaa5 Extend coins_tests (Pieter Wuille) 508307968 Switch CCoinsView and chainstate db from per-txid to per-txout (Pieter Wuille) 4ec0d9e79 Refactor GetUTXOStats in preparation for per-COutPoint iteration (Pieter Wuille) 13870b56f Replace CCoins-based CTxMemPool::pruneSpent with isSpent (Pieter Wuille) 05293f3cb Remove ModifyCoins/ModifyNewCoins (Pieter Wuille) 961e48397 Switch tests from ModifyCoins to AddCoin/SpendCoin (Pieter Wuille) 8b3868c1b Switch CScriptCheck to use Coin instead of CCoins (Pieter Wuille) c87b957a3 Only pass things committed to by tx's witness hash to CScriptCheck (Matt Corallo) f68cdfe92 Switch from per-tx to per-txout CCoinsViewCache methods in some places (Pieter Wuille) 000391132 Introduce new per-txout CCoinsViewCache functions (Pieter Wuille) bd83111a0 Optimization: Coin&& to ApplyTxInUndo (Pieter Wuille) cb2c7fdac Replace CTxInUndo with Coin (Pieter Wuille) 422634e2f Introduce Coin, a single unspent output (Pieter Wuille) 7d991b55d Store/allow tx metadata in all undo records (Pieter Wuille) c3aa0c119 Report on-disk size in gettxoutsetinfo (Pieter Wuille) d34242430 Remove/ignore tx version in utxo and undo (Pieter Wuille) 7e0032290 Add specialization of SipHash for 256 + 32 bit data (Pieter Wuille) e484652fc Introduce CHashVerifier to hash read data (Pieter Wuille) f54580e7e error() in disconnect for disk corruption, not inconsistency (Pieter Wuille) e66dbde6d Add SizeEstimate to CDBBatch (Pieter Wuille) Tree-SHA512: ce1fb1e40c77d38915cd02189fab7a8b125c7f44d425c85579d872c3bede3a437760997907c99d7b3017ced1c2de54b2ac7223d99d83a6658fe5ef61edef1de3
2017-06-01Only pass things committed to by tx's witness hash to CScriptCheckMatt Corallo
This clarifies a bit more the ways in which the new script execution cache could break consensus in the future if additional data from the CCoins object were to be used as a part of script execution. After this change, any such consensus breaks should be very visible to reviewers, hopefully ensuring no such changes can be made.
2017-05-30Merge #9208: Improve DisconnectTip performanceWladimir J. van der Laan
c1235e3 Add RecursiveDynamicUsage overload for std::shared_ptr (Russell Yanofsky) 71f1903 Store disconnected block transactions outside mempool during reorg (Suhas Daftuar) 9decd64 [qa] Relax assumptions on mempool behavior during reorg (Suhas Daftuar) Tree-SHA512: c160ad853a5cd060d0307af7606a0c77907497ed7033c9599b95e73d83f68fdfcd4214bd8a83db1c5b7a58022722b9de1ed2e6ea2e02f38a7b6c717f079dd0c6
2017-05-26Broadcast address every day, not 9 hoursPieter Wuille
2017-05-23Merge #9571: RPC: getblockchaininfo returns BIP signaling statisticsWladimir J. van der Laan
557c9a6 RPC: getblockchaininfo: BIP9 stats (Matthew Zipkin) Tree-SHA512: ecf0bf47f04f92becc77acc649fdfa270e768939acce42df39d30069398d40d9a30539862f7c307e08239f78d5c58c470ca5f6e717d2ab8e24db9be0dd7bec0c
2017-05-18Merge #8329: Consensus: MOVEONLY: Move functions for tx verificationWladimir J. van der Laan
618d07f MOVEONLY: tx functions to consensus/tx_verify.o (Jorge Timón) Tree-SHA512: 63fa2777c070a344dbfe61974526a770d962e049881c6f371b0034b1682c1e6e24f47454f01ee35ded20ade34488e023d4467a05369662906b99a73bb5de8497
2017-05-04Store disconnected block transactions outside mempool during reorgSuhas Daftuar
Rather than re-add disconnected block transactions back to the mempool immediately, store them in a separate disconnectpool for later processing, because we expect most such transactions to reappear in the chain that is still to be connected (and thus we can avoid the work of reprocessing those transactions through the mempool altogether).
2017-05-03Consensus: Policy: MOVEONLY: Move CFeeRate out of the consensus moduleJorge Timón
...from amount.o to policy/feerate.o Policy, because it moves policy code to the policy directory (common module)
2017-05-03Merge #9966: Control mempool persistence using a command line parameterWladimir J. van der Laan
a750d77 Add tests for mempool persistence (John Newbery) 91c91e1 Control mempool persistence using a command line parameter. (John Newbery) Tree-SHA512: 157d01cefd1903b8bfc5cbab42a3cc5e9c1094179bf4b64b3d34c0d4d9b976d593755bfea5c41c631cb758e1de17c6c2058c130d487d20560b7c0bafcddfa520
2017-04-27Add -stopatheight for benchmarkingPieter Wuille
2017-04-20Merge #10181: Include cleanupWladimir J. van der Laan
1c897fc Missing includes (Jorge Timón) a1fd450 Trivial: Remove unneeded includes from .h: (Jorge Timón) Tree-SHA512: ada3e62cc2435e58172a88b380be371b717a05725956c15e5493b6e19fe2903e5e6e43fd22dc24699333a0e8a0c7b42eb1ae61b41cb4ba82495be18e2d4ef3c6
2017-04-20Merge #9942: Refactor CBlockPolicyEstimatorWladimir J. van der Laan
68af651 MOVEONLY: move TxConfirmStats to cpp (Alex Morcos) 2332f19 Initialize TxConfirmStats in constructor (Alex Morcos) 5ba81e5 Read and Write fee estimate file directly from CBlockPolicyEstimator (Alex Morcos) 14e10aa Call estimate(Smart)Fee directly from CBlockPolicyEstimator (Alex Morcos) dbb9e36 Give CBlockPolicyEstimator it's own lock (Alex Morcos) f6187d6 Make processBlockTx private. (Alex Morcos) ae7327b Make feeEstimator its own global instance of CBlockPolicyEstimator (Alex Morcos) Tree-SHA512: dbf3bd2b30822e609a35f3da519b62d23f8a50e564750695ddebd08553b4c01874ae3e07d792c6cc78cc377d2db33b951ffedc46ac7edaf5793f9ebb931713af
2017-04-13Trivial: Remove unneeded includes from .h:Jorge Timón
- validation.h doesn't need to include chain.h anymore - Remove unneeded includes from net.h
2017-04-10Make DisconnectBlock and ConnectBlock static in validation.cppMatt Corallo
2017-04-10Make feeEstimator its own global instance of CBlockPolicyEstimatorAlex Morcos
2017-04-06MOVEONLY: tx functions to consensus/tx_verify.oJorge Timón
Functions related to transaction verification.
2017-04-03Replace uses of boost::filesystem with fsWladimir J. van der Laan
Step two in abstracting away boost::filesystem. To repeat this, simply run: ``` git ls-files \*.cpp \*.h | xargs sed -i 's/boost::filesystem/fs/g' ```
2017-04-03Replace includes of boost/filesystem.h with fs.hWladimir J. van der Laan
This is step one in abstracting the use of boost::filesystem.
2017-03-24RPC: getblockchaininfo: BIP9 statsMatthew Zipkin
add RPC tests for BIP9 counting stats
2017-03-22Control mempool persistence using a command line parameter.John Newbery
Mempool persistence was added in 3f78562df5e86a2a0a21812047fc3a7db8cee988, and is always on. This commit introduces a command-line parameter -persistmempool, which defaults to true. When set to false: - mempool.dat is not loaded when the node starts. - mempool.dat is not written when the node stops.
2017-03-19Fix parameter naming inconsistencies between .h and .cpp filespracticalswift
Inconsistencies prior to this commit: * serializeFlags vs serialFlags src/core_io.h:std::string EncodeHexTx(const CTransaction& tx, const int serializeFlags = 0); src/core_write.cpp:std::string EncodeHexTx(const CTransaction& tx, const int serialFlags) * statusOut vs outStatus src/rpc/server.h:bool RPCIsInWarmup(std::string *statusOut); src/rpc/server.cpp:bool RPCIsInWarmup(std::string *outStatus) * hashesToUpdate vs vHashesToUpdate src/txmempool.h: void UpdateTransactionsFromBlock(const std::vector<uint256> &hashesToUpdate); src/txmempool.cpp:void CTxMemPool::UpdateTransactionsFromBlock(const std::vector<uint256> &vHashesToUpdate) * nPruneUpToHeight vs nManualPruneHeight src/validation.h:void PruneBlockFilesManual(int nPruneUpToHeight); src/validation.cpp:void PruneBlockFilesManual(int nManualPruneHeight);
2017-03-03No longer allow "free" transactionsAlex Morcos
Remove -limitfreerelay and always enforce minRelayTxFee in the mempool (except from disconnected blocks) Remove -relaypriority, the option was only used for the ability to allow free transactions to be relayed regardless of their priority. Both notions no longer apply.
2017-02-17Return errors from importmulti if complete rescans are not successfulRussell Yanofsky
2017-01-19Merge #9499: Use recent-rejects, orphans, and recently-replaced txn for ↵Wladimir J. van der Laan
compact-block-reconstruction c594580 Add braces around AddToCompactExtraTransactions (Matt Corallo) 1ccfe9b Clarify comment about mempool/extra conflicts (Matt Corallo) fac4c78 Make PartiallyDownloadedBlock::InitData's second param const (Matt Corallo) b55b416 Add extra_count lower bound to compact reconstruction debug print (Matt Corallo) 863edb4 Consider all (<100k memusage) txn for compact-block-extra-txn cache (Matt Corallo) 7f8c8ca Consider all orphan txn for compact-block-extra-txn cache (Matt Corallo) 93380c5 Use replaced transactions in compact block reconstruction (Matt Corallo) 1531652 Keep shared_ptrs to recently-replaced txn for compact blocks (Matt Corallo) edded80 Make ATMP optionally return the CTransactionRefs it replaced (Matt Corallo) c735540 Move ORPHAN constants from validation.h to net_processing.h (Matt Corallo)
2017-01-16Merge #9484: Introduce assumevalid setting to skip validation presumed valid ↵Pieter Wuille
scripts. 7b5e3fe Add assumevalid testcase (John Newbery) e440ac7 Introduce assumevalid setting to skip presumed valid scripts. (Gregory Maxwell)
2017-01-13Merge #9375: Relay compact block messages prior to full block connectionPieter Wuille
02ee4eb Make most_recent_compact_block a pointer to a const (Matt Corallo) 73666ad Add comment to describe callers to ActivateBestChain (Matt Corallo) 962f7f0 Call ActivateBestChain without cs_main/with most_recent_block (Matt Corallo) 0df777d Use a temp pindex to avoid a const_cast in ProcessNewBlockHeaders (Matt Corallo) c1ae4fc Avoid holding cs_most_recent_block while calling ReadBlockFromDisk (Matt Corallo) 9eb67f5 Ensure we meet the BIP 152 old-relay-types response requirements (Matt Corallo) 5749a85 Cache most-recently-connected compact block (Matt Corallo) 9eaec08 Cache most-recently-announced block's shared_ptr (Matt Corallo) c802092 Relay compact block messages prior to full block connection (Matt Corallo) 6987219 Add a CValidationInterface::NewPoWValidBlock callback (Matt Corallo) 180586f Call AcceptBlock with the block's shared_ptr instead of CBlock& (Matt Corallo) 8baaba6 [qa] Avoid race in preciousblock test. (Matt Corallo) 9a0b2f4 [qa] Make compact blocks test construction using fetch methods (Matt Corallo) 8017547 Make CBlockIndex*es in net_processing const (Matt Corallo)
2017-01-13Introduce assumevalid setting to skip presumed valid scripts.Gregory Maxwell
This disentangles the script validation skipping from checkpoints. A new option is introduced "assumevalid" which specifies a block whos ancestors we assume all have valid scriptsigs and so we do not check them when they are also burried under the best header by two weeks worth of work. Unlike checkpoints this has no influence on consensus unless you set it to a block with an invalid history. Because of this it can be easily be updated without risk of influencing the network consensus. This results in a massive IBD speedup. This approach was independently recommended by Peter Todd and Luke-Jr since POW based signature skipping (see PR#9180) does not have the verifiable properties of a specific hash and may create bad incentives. The downside is that, like checkpoints, the defaults bitrot and older releases will sync slower. On the plus side users can provide their own value here, and if they set it to something crazy all that will happen is more time will be spend validating signatures. Checkblocks and checklevel are also moved to the hidden debug options: Especially now that checkblocks has a low default there is little need to change these settings, and users frequently misunderstand them as influencing security or IBD speed. By hiding them we offset the space added by this new option.
2017-01-12Merge #9472: Disentangle progress estimation from checkpoints and update itWladimir J. van der Laan
df36371 Update estimated transaction count data (Pieter Wuille) e356d9a Shorten variable names and switch to tx/s (Pieter Wuille) 6dd8116 Remove SIGCHECK_VERIFICATION_FACTOR (Pieter Wuille) 3641141 Move tx estimation data out of CCheckPointData (Pieter Wuille) a4bac66 [MOVEONLY] Move progress estimation out of checkpoints (Pieter Wuille)
2017-01-10Add pruneblockchain RPC to enable manual block file pruning.mrbandrews
2017-01-09Make ATMP optionally return the CTransactionRefs it replacedMatt Corallo
2017-01-09Move ORPHAN constants from validation.h to net_processing.hMatt Corallo
2017-01-05Merge #9138: Improve fee estimationPieter Wuille
44b64b9 Fix edge case with stale fee estimates (Alex Morcos) 78ae62d Add clarifying comments to fee estimation (Alex Morcos) 5fe0f47 Add extra logging to processBlock in fee estimation. (Alex Morcos) dc008c4 Add IsCurrentForFeeEstimatation (Alex Morcos) ebafdca Pass pointers to existing CTxMemPoolEntries to fee estimation (Alex Morcos) d825838 Always update fee estimates on new blocks. (Alex Morcos) 6f06b26 rename bool to validFeeEstimate (Alex Morcos) 84f7ab0 Remove member variable hadNoDependencies from CTxMemPoolEntry (Alex Morcos) 60ac00d Don't track transactions at all during IBD. (Alex Morcos) 4df4479 Remove extraneous LogPrint from fee estimation (Alex Morcos)