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2014-07-07Merge pull request #4471Wladimir J. van der Laan
40f5cb8 Send rejects and apply DoS scoring for errors in direct block validation. (Pieter Wuille)
2014-07-07Merge pull request #4446Wladimir J. van der Laan
209377a Use GetBlockTime() more (jtimon)
2014-07-07Merge pull request #4470Wladimir J. van der Laan
f4b00be Add CChain::GetLocator() unit test (Pieter Wuille) 3c85d2e Fix CChain::GetLocator (Pieter Wuille)
2014-07-07Use GetBlockTime() morejtimon
2014-07-07Merge pull request #4472Wladimir J. van der Laan
9f4da19 Use pong receive time rather than processing time (Pieter Wuille)
2014-07-06Use pong receive time rather than processing timePieter Wuille
2014-07-06Send rejects and apply DoS scoring for errors in direct block validation.Pieter Wuille
75f51f2a introduced asynchronous processing for blocks, where reject messages and DoS scoring could be applied outside of ProcessBlock, because block validation may happen later. However, some types of errors are still detected immediately (in particular, CheckBlock violations), which need acting after ProcessBlock returns.
2014-07-06Fix CChain::GetLocatorPieter Wuille
2014-07-04Merge pull request #3764Wladimir J. van der Laan
2e36866 Show nodeid instead of addresses (for anonymity) unless otherwise requested. (R E Broadley)
2014-07-04Merge pull request #4450Wladimir J. van der Laan
0da6b3f Remove signal DoubleSpendDetected, use function (Tom Harding) 88dd359 Check signatures before respend relay (Tom Harding)
2014-07-04Show nodeid instead of addresses (for anonymity) unless otherwise requested.R E Broadley
2014-07-03Move fee policy out of coreGavin Andresen
2014-07-03Sanity checks for estimatesGavin Andresen
Require at least 11 samples before giving fee/priority estimates. And have wallet-created transactions go throught the fee-sanity-check code path.
2014-07-03Use fee/priority estimates in wallet CreateTransactionGavin Andresen
The wallet now uses the mempool fee estimator with a new command-line option: -txconfirmtarget (default: 1) instead of using hard-coded fees or priorities. A new bitcoind that hasn't seen enough transactions to estimate will fall back to the old hard-coded minimum priority or transaction fee. -paytxfee option overrides -txconfirmtarget. Relaying and mining code isn't changed. For Qt, the coin control dialog now uses priority estimates to label transaction priority (instead of hard-coded constants); unspent outputs were consistently labeled with a much higher priority than is justified by the free transactions actually being accepted into blocks. I did not implement any GUI for setting -txconfirmtarget; I would suggest getting rid of the "Pay transaction fee" GUI and replace it with either "target number of confirmations" or maybe a "faster confirmation <--> lower fee" slider or select box.
2014-07-02Remove signal DoubleSpendDetected, use functionTom Harding
Also removes the need for forward reference to RelayableRespend.
2014-07-01Check signatures before respend relayTom Harding
Check that all inputs are completely valid before actually relaying a double-spend.
2014-06-30Merge pull request #3883 from dgenr8/first_double_spendGavin Andresen
Relay and alert user to double spends
2014-06-29Add a skiplist to the CBlockIndex structure.Pieter Wuille
This allows fast (O(log n)) access to far predecessor blocks. Use it to speed up CChain::FindFork and CChain::GetLocator.
2014-06-29Track peers' available blocksPieter Wuille
2014-06-28Merge pull request #4436Wladimir J. van der Laan
675bcd5 Correct comment for 15-of-15 p2sh script size (Michael Ford)
2014-06-28Merge pull request #4425Wladimir J. van der Laan
6ecf3ed Display unknown commands received. (R E Broadley)
2014-06-28Merge pull request #4398Wladimir J. van der Laan
86fe1b8 update coding.md to reflect changes by pull (Philip Kaufmann) e10dcf2 ensure clean and consistent "namespace" usage (Philip Kaufmann)
2014-06-28Correct comment for 15-of-15 p2sh script sizeMichael Ford
The original comment forgets to account for the script push which will need an OP_PUSHDATA2 + 2-bytes for the 513 script bytes. props davecgh fixes #4224
2014-06-28Display unknown commands received.R E Broadley
2014-06-28Show only one zero instead of many when getblocks request received with a ↵R E Broadley
hashStop of uint256(0)
2014-06-27Formatting, spelling, comment fixes.Tom Harding
2014-06-27Relay double-spends, subject to anti-DOSTom Harding
Allows network wallets and other clients to see transactions that respend a prevout already spent in an unconfirmed transaction in this node's mempool. Knowledge of an attempted double-spend is of interest to recipients of the first spend. In some cases, it will allow these recipients to withhold goods or services upon being alerted of a double-spend that deprives them of payment. As before, respends are not added to the mempool. Anti-Denial-of-Service-Attack provisions: - Use a bloom filter to relay only one respend per mempool prevout - Rate-limit respend relays to a default of 100 thousand bytes/minute - Define tx2.IsEquivalentTo(tx1): equality when scriptSigs are not considered - Do not relay these equivalent transactions Remove an unused variable declaration in txmempool.cpp.
2014-06-27Merge pull request #4365 from gavinandresen/relax_isstandardGavin Andresen
Relax IsStandard rules for pay-to-script-hash transactions
2014-06-26JSON-RPC method: prioritisetransaction <txid> <priority delta> <priority tx fee>Luke Dashjr
Accepts the transaction into mined blocks at a higher (or lower) priority
2014-06-26ensure clean and consistent "namespace" usagePhilip Kaufmann
- remove some missplaced ; - ensure end of a namespace is clearly visible - use same formatting when using namespace
2014-06-23Refactor proof of work related functions out of mainjtimon
2014-06-23Relax IsStandard rules for pay-to-script-hash transactionsGavin Andresen
Relax the AreInputsStandard() tests for P2SH transactions -- allow any Script in a P2SH transaction to be relayed/mined, as long as it has 15 or fewer signature operations. Rationale: https://gist.github.com/gavinandresen/88be40c141bc67acb247 I don't have an easy way to test this, but the code changes are straightforward and I've updated the AreInputsStandard unit tests.
2014-06-22Code simplifications after CTransaction::GetHash() cachingPieter Wuille
2014-06-19Merge pull request #4310Wladimir J. van der Laan
7a9e0b6 Move checkpoint based heuristic checks to AcceptBlockHeader (Pieter Wuille)
2014-06-12Merge pull request #2784Wladimir J. van der Laan
f1920e8 Ping automatically every 2 minutes (unconditionally) (Pieter Wuille)
2014-06-10small formatting, indentation and comment fixesPhilip Kaufmann
- contains zero code changes
2014-06-09Ping automatically every 2 minutes (unconditionally)Pieter Wuille
... instead of after 30 minutes of no sending, for latency measurement and keep-alive. Also, disconnect if no reply arrives within 20 minutes, instead of 90 of inactivity (for peers supporting the 'pong' message).
2014-06-09Merge pull request #3824Wladimir J. van der Laan
f0a83fc Use Params().NetworkID() instead of TestNet() from the payment protocol (jtimon) 2871889 net.h was using std namespace through chainparams.h included in protocol.h (jtimon) c8c52de Replace virtual methods with static attributes, chainparams.h depends on protocol.h instead of the other way around (jtimon) a3d946e Get rid of TestNet() (jtimon) 6fc0fa6 Add RPCisTestNet chain parameter (jtimon) cfeb823 Add RequireStandard chain parameter (jtimon) 21913a9 Add AllowMinDifficultyBlocks chain parameter (jtimon) d754f34 Move majority constants to chainparams (jtimon) 8d26721 Get rid of RegTest() (jtimon) cb9bd83 Add DefaultCheckMemPool chain parameter (jtimon) 2595b9a Add DefaultMinerThreads chain parameter (jtimon) bfa9a1a Add MineBlocksOnDemand chain parameter (jtimon) 1712adb Add MiningRequiresPeers chain parameter (jtimon)
2014-06-09Push cs_mains down in ProcessBlockPieter Wuille
2014-06-09Move all post-chaintip-change notifications to ActivateBestChainPieter Wuille
2014-06-09Allow ActivateBestChain to release its lock on cs_mainPieter Wuille
2014-06-09Get rid of the static chainMostWork (optimization)Pieter Wuille
2014-06-09Move checkpoint based heuristic checks to AcceptBlockHeaderPieter Wuille
2014-06-06estimatefee / estimatepriority RPC methodsGavin Andresen
New RPC methods: return an estimate of the fee (or priority) a transaction needs to be likely to confirm in a given number of blocks. Mike Hearn created the first version of this method for estimating fees. It works as follows: For transactions that took 1 to N (I picked N=25) blocks to confirm, keep N buckets with at most 100 entries in each recording the fees-per-kilobyte paid by those transactions. (separate buckets are kept for transactions that confirmed because they are high-priority) The buckets are filled as blocks are found, and are saved/restored in a new fee_estiamtes.dat file in the data directory. A few variations on Mike's initial scheme: To estimate the fee needed for a transaction to confirm in X buckets, all of the samples in all of the buckets are used and a median of all of the data is used to make the estimate. For example, imagine 25 buckets each containing the full 100 entries. Those 2,500 samples are sorted, and the estimate of the fee needed to confirm in the very next block is the 50'th-highest-fee-entry in that sorted list; the estimate of the fee needed to confirm in the next two blocks is the 150'th-highest-fee-entry, etc. That algorithm has the nice property that estimates of how much fee you need to pay to get confirmed in block N will always be greater than or equal to the estimate for block N+1. It would clearly be wrong to say "pay 11 uBTC and you'll get confirmed in 3 blocks, but pay 12 uBTC and it will take LONGER". A single block will not contribute more than 10 entries to any one bucket, so a single miner and a large block cannot overwhelm the estimates.
2014-06-06Type-safe CFeeRate classGavin Andresen
Use CFeeRate instead of an int64_t for quantities that are fee-per-size. Helps prevent unit-conversion mismatches between the wallet, relaying, and mining code.
2014-06-04Merge pull request #4287 from laanwj/2014_06_sideeffectGavin Andresen
Remove side effect in assertion in ProcessGetData
2014-06-04Merge pull request #4247 from Diapolo/listenJeff Garzik
rename fNoListen to fListen and move to net
2014-06-04Merge pull request #4258Wladimir J. van der Laan
7b45d94 Make max number of orphan blocks kept in memory a startup parameter (fixes #4253) (shshshsh)
2014-06-04Remove side effect in assertion in ProcessGetDataWladimir J. van der Laan
A side-effect was introduced into an assertion in 7a0e84d. This commit fixes that.
2014-06-04Make max number of orphan blocks kept in memory a startup parameter (fixes ↵shshshsh
#4253)