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fa1193e [doxygen] Actually display comment (MarcoFalke)
fa331db mempool: Replace maxFeeRate of 10000*minRelayTxFee with maxTxFee (MarcoFalke)
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Also renames whitelistalwaysrelay.
Nodes relay all transactions from whitelisted peers, this
gets in the way of some useful reasons for whitelisting
peers-- for example, bypassing bandwidth limitations.
The purpose of this forced relaying is for specialized gateway
applications where a node is being used as a P2P connection
filter and multiplexer, but where you don't want it getting
in the way of (re-)broadcast.
This change makes it configurable with whitelistforcerelay.
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Add a configuration option `-permitrbf` to set transaction replacement policy
for the mempool.
Enabling it will enable (opt-in) RBF, disabling it will refuse all
conflicting transactions.
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64360f1 Make max tip age an option instead of chainparam (Wladimir J. van der Laan)
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45b8e27 -bytespersigop option to additionally limit sigops in transactions we relay and mine (Luke Dashjr)
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fa71669 [devtools] Use git pretty-format for year parsing (MarcoFalke)
fa24439 Bump copyright headers to 2015 (MarcoFalke)
fa6ad85 [devtools] Rewrite fix-copyright-headers.py (MarcoFalke)
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901b01d Remove GetMinRelayFee (Suhas Daftuar)
27fae34 Use fee deltas for determining mempool acceptance (Suhas Daftuar)
9ef2a25 Update replace-by-fee logic to use fee deltas (Suhas Daftuar)
eb30666 Fix mempool limiting for PrioritiseTransaction (Suhas Daftuar)
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After discussion in #7164 I think this is better.
Max tip age was introduced in #5987 to make it possible to run
testnet-in-a-box. But associating this behavior with the testnet chain
is wrong conceptually, as it is not needed in normal usage.
Should aim to make testnet test the software as-is.
Replace it with a (debug) option `-maxtipage`, which can be
specified only in the specific case.
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We used to have a trickle node, a node which was chosen in each iteration of
the send loop that was privileged and allowed to send out queued up non-time
critical messages. Since the removal of the fixed sleeps in the network code,
this resulted in fast and attackable treatment of such broadcasts.
This pull request changes the 3 remaining trickle use cases by random delays:
* Local address broadcast (while also removing the the wiping of the seen filter)
* Address relay
* Inv relay (for transactions; blocks are always relayed immediately)
The code is based on older commits by Patrick Strateman.
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One test in AcceptToMemoryPool was to compare a transaction's fee
agains the value returned by GetMinRelayFee. This value was zero for
all small transactions. For larger transactions (between
DEFAULT_BLOCK_PRIORITY_SIZE and MAX_STANDARD_TX_SIZE), this function
was preventing low fee transactions from ever being accepted.
With this function removed, we will now allow transactions in that range
with fees (including modifications via PrioritiseTransaction) below
the minRelayTxFee, provided that they have sufficient priority.
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and mine
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aabc897 rpc: Don't translate warning messages (Wladimir J. van der Laan)
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But keep translating them in the GUI.
This - necessarily - requires duplication of a few messages.
Alternative take on #7134, that keeps the translations from being wiped.
Also document GetWarnings() input argument.
Fixes #5895.
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cb491e7 Trivial: Fix warning introduced by #7053 by casting to uint64_t (Jorge Timón)
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This replaces using inv messages to announce new blocks, when a peer requests
(via the new "sendheaders" message) that blocks be announced with headers
instead of inv's.
Since headers-first was introduced, peers send getheaders messages in response
to an inv, which requires generating a block locator that is large compared to
the size of the header being requested, and requires an extra round-trip before
a reorg can be relayed. Save time by tracking headers that a peer is likely to
know about, and send a headers chain that would connect to a peer's known
headers, unless the chain would be too big, in which case we revert to sending
an inv instead.
Based off of @sipa's commit to announce all blocks in a reorg via inv,
which has been squashed into this commit.
Rebased-by: Pieter Wuille
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* DEFAULT_DISABLE_SAFEMODE = false
* Use DEFAULT_* constants for extern bools
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2e29e7e Globals: Remove a bunch of Params() calls from main.cpp: (Jorge Timón)
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e304432 Pass reference to estimateSmartFee and cleanup whitespace (Suhas Daftuar)
56106a3 Expose RPC calls for estimatesmart functions (Alex Morcos)
e93a236 add estimateSmartFee to the unit test (Alex Morcos)
6303051 EstimateSmart functions consider mempool min fee (Alex Morcos)
f22ac4a Increase success threshold for fee estimation to 95% (Alex Morcos)
4fe2823 Change wallet and GUI code to use new smart fee estimation calls. (Alex Morcos)
22eca7d Add smart fee estimation functions (Alex Morcos)
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1) Chainparams: Explicit CChainParams arg for main:
-AcceptBlock
-AcceptBlockHeader
-ActivateBestChain
-ConnectTip
-InitBlockIndex
-LoadExternalBlockFile
-VerifyDB parametric constructor
2) Also pickup more Params()\. in main.cpp
3) Pass nPruneAfterHeight explicitly to new FindFilesToPrune() in main.cpp
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6bc9e40 Chainparams: Explicit CChainParams arg for miner: (Jorge Timón)
598e494 Chainparams: Explicit CChainParams arg for main (pre miner): (Jorge Timón)
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-ProcessNewBlock
-TestBlockValidity
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7267843 Globals: Make AcceptBlockHeader static (Fix #6163) (Jorge Timón)
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..and at the same time prevent AcceptBlockHeader() from calling global function Params()
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e20d924 [trivial] init: Use defaults MIN_RELAY_TX_FEE & TRANSACTION_MAXFEE (MarcoFalke)
536766c [trivial] New DEFAULT_MIN_RELAY_TX_FEE = 1000 (MarcoFalke)
5f46a7d transaction_tests: Be more strict checking dust (MarcoFalke)
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87cbdb8 Globals: Explicit Consensus::Params arg for main: (Jorge Timón)
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d1c3762 Revert "Revert "Enable policy enforcing GetMedianTimePast as the end point of lock-time constraints"" (Gregory Maxwell)
e4e5334 Restore MedianTimePast for locktime. (Gregory Maxwell)
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a6efc01 Bugfix: Omit wallet-related options from -help when wallet is disabled (Luke Dashjr)
5f9260f Bugfix: If genproclimit is omitted to RPC setgenerate, don't change it; also show correct default in getmininginfo (Luke Dashjr)
420a82f Bugfix: Describe dblogsize option correctly (it refers to the wallet database, not memory pool) (Luke Dashjr)
caa3d42 Bugfix: RPC: blockchain: Display correct defaults in help for verifychain method (Luke Dashjr)
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Revert "Revert "Add rules--presently disabled--for using GetMedianTimePast as endpoint for lock-time calculations""
This reverts commit 40cd32e835092c3158175511da5193193ec54939.
After careful analysis it was determined that the change was, in fact, safe and several people were suffering
momentary confusion about locktime semantics.
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endpoint for lock-time calculations"
This reverts commit 9d55050773d57c0e12005e524f2e54d9e622c6e2.
As noted by Luke-Jr, under some conditions this will accept transactions which are invalid by the network
rules. This happens when the current block time is head of the median time past and a transaction's
locktime is in the middle.
This could be addressed by changing the rule to MAX(this_block_time, MTP+offset) but this solution and
the particular offset used deserve some consideration.
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-CheckBlockIndex
-DisconnectTip
-GetTransaction
-InvalidateBlock
-ProcessGetData
-ReadBlockFromDisk
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Reduce the default limits on maximum number of transactions and the cumulative size of those transactions in both ancestor and descendant packages to 25 txs and 101kb total size.
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lock-time calculations
The lock-time code currently uses CBlock::nTime as the cutoff point for time based locked transactions. This has the unfortunate outcome of creating a perverse incentive for miners to lie about the time of a block in order to collect more fees by including transactions that by wall clock determination have not yet matured. By using CBlockIndex::GetMedianTimePast from the prior block instead, the self-interested miner no longer gains from generating blocks with fraudulent timestamps. Users can compensate for this change by simply adding an hour (3600 seconds) to their time-based lock times.
If enforced, this would be a soft-fork change. This commit only adds the functionality on an unexecuted code path, without changing the behaviour of Bitcoin Core.
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After each transaction which is added to mempool, we first call
Expire() to remove old transactions, then throwing away the
lowest-feerate transactions.
After throwing away transactions by feerate, we set the minimum
relay fee to the maximum fee transaction-and-dependant-set we
removed, plus the default minimum relay fee.
After the next block is received, the minimum relay fee is allowed
to decrease exponentially. Its halflife defaults to 12 hours, but
is decreased to 6 hours if the mempool is smaller than half its
maximum size, and 3 hours if the mempool is smaller than a quarter
its maximum size.
The minimum -maxmempool size is 40*-limitdescendantsize, as it is
easy for an attacker to play games with the cheapest
-limitdescendantsize transactions. -maxmempool defaults to 300MB.
This disables high-priority transaction relay when the min relay
fee adjustment is >0 (ie when the mempool is full). When the relay
fee adjustment drops below the default minimum relay fee / 2 it is
set to 0 (re-enabling priority-based free relay).
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(note the 9x multiplier on (void*)'s for CTxMemPool::DynamicMemoryUsage
was accidentally introduced in 5add7a7 but should have waited for this
commit which adds the extra index)
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Associate with each CTxMemPoolEntry all the size/fees of descendant
mempool transactions. Sort mempool by max(feerate of entry, feerate
of descendants). Update statistics on-the-fly as transactions enter
or leave the mempool.
Also add ancestor and descendant limiting, so that transactions can
be rejected if the number or size of unconfirmed ancestors exceeds
a target, or if adding a transaction would cause some other mempool
entry to have too many (or too large) a set of unconfirmed in-
mempool descendants.
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7f1f8f5 Move mempool rejections to new debug category (Wladimir J. van der Laan)
66daed5 Add information to errors in ConnectBlock, CheckBlock (Wladimir J. van der Laan)
6cab808 Remove most logging from transaction validation (Wladimir J. van der Laan)
9003c7c Add function to convert CValidationState to a human-readable message (Wladimir J. van der Laan)
dc58258 Introduce REJECT_INTERNAL codes for local AcceptToMempool errors (Wladimir J. van der Laan)
fbf44e6 Add debug message to CValidationState for optional extra information (Wladimir J. van der Laan)
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