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d4d3fbd Do not flush the cache after every block outside of IBD (Pieter Wuille)
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state.Invalid() is always false, check should be IsInvalid()
Broken since 942b33a
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4eedf4f make RandAddSeed() use OPENSSL_cleanse() (Philip Kaufmann)
6354935 move rand functions from util to new random.h/.cpp (Philip Kaufmann)
001a53d add GetRandBytes() as wrapper for RAND_bytes() (Philip Kaufmann)
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dc942e6 Introduce whitelisted peers. (Pieter Wuille)
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This adds a -whitelist option to specify subnet ranges from which peers
that connect are whitelisted. In addition, there is a -whitebind option
which works like -bind, except peers connecting to it are also
whitelisted (allowing a separate listen port for trusted connections).
Being whitelisted has two effects (for now):
* They are immune to DoS disconnection/banning.
* Transactions they broadcast (which are valid) are always relayed,
even if they were already in the mempool. This means that a node
can function as a gateway for a local network, and that rebroadcasts
from the local network will work as expected.
Whitelisting replaces the magic exemption localhost had for DoS
disconnection (local addresses are still never banned, though), which
implied hidden service connects (from a localhost Tor node) were
incorrectly immune to DoS disconnection as well. This old
behaviour is removed for that reason, but can be restored using
-whitelist=127.0.0.1 or -whitelist=::1 can be specified. -whitebind
is safer to use in case non-trusted localhost connections are expected
(like hidden services).
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- add a small wrapper in util around RAND_bytes() and replace with
GetRandBytes() in the code to log errors from calling RAND_bytes()
- remove OpenSSL header rand.h where no longer needed
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40f5cb8 Send rejects and apply DoS scoring for errors in direct block validation. (Pieter Wuille)
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209377a Use GetBlockTime() more (jtimon)
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f4b00be Add CChain::GetLocator() unit test (Pieter Wuille)
3c85d2e Fix CChain::GetLocator (Pieter Wuille)
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9f4da19 Use pong receive time rather than processing time (Pieter Wuille)
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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.
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2e36866 Show nodeid instead of addresses (for anonymity) unless otherwise requested. (R E Broadley)
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0da6b3f Remove signal DoubleSpendDetected, use function (Tom Harding)
88dd359 Check signatures before respend relay (Tom Harding)
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Require at least 11 samples before giving fee/priority estimates.
And have wallet-created transactions go throught the fee-sanity-check
code path.
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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.
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Also removes the need for forward reference to RelayableRespend.
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Check that all inputs are completely valid before actually
relaying a double-spend.
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Relay and alert user to double spends
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This allows fast (O(log n)) access to far predecessor blocks.
Use it to speed up CChain::FindFork and CChain::GetLocator.
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675bcd5 Correct comment for 15-of-15 p2sh script size (Michael Ford)
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6ecf3ed Display unknown commands received. (R E Broadley)
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86fe1b8 update coding.md to reflect changes by pull (Philip Kaufmann)
e10dcf2 ensure clean and consistent "namespace" usage (Philip Kaufmann)
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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
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hashStop of uint256(0)
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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.
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Relax IsStandard rules for pay-to-script-hash transactions
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Accepts the transaction into mined blocks at a higher (or lower) priority
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- remove some missplaced ;
- ensure end of a namespace is clearly visible
- use same formatting when using namespace
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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.
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7a9e0b6 Move checkpoint based heuristic checks to AcceptBlockHeader (Pieter Wuille)
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f1920e8 Ping automatically every 2 minutes (unconditionally) (Pieter Wuille)
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- contains zero code changes
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... 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).
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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)
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