Commit Graph

82 Commits

Author SHA1 Message Date
Wladimir J. van der Laan
5a23934df1 Merge #13191: Specialized double-SHA256 with 64 byte inputs with SSE4.1 and AVX2
4defdfab94504018f822dc34a313ad26cedc8255 [MOVEONLY] Move unused Merkle branch code to tests (Pieter Wuille)
4437d6e1f3107a20a8c7b66be8b4b972a82e3b28 8-way AVX2 implementation for double SHA256 on 64-byte inputs (Pieter Wuille)
230294bf5fdeba7213471cd0b795fb7aa36e5717 4-way SSE4.1 implementation for double SHA256 on 64-byte inputs (Pieter Wuille)
1f0e7ca09c9d7c5787c218156fa5096a1bdf2ea8 Use SHA256D64 in Merkle root computation (Pieter Wuille)
d0c96328833127284574bfef26f96aa2e4afc91a Specialized double sha256 for 64 byte inputs (Pieter Wuille)
57f34630fb6c3e218bd19535ac607008cb894173 Refactor SHA256 code (Pieter Wuille)
0df017889b4f61860092e1d54e271092cce55f62 Benchmark Merkle root computation (Pieter Wuille)

Pull request description:

  This introduces a framework for specialized double-SHA256 with 64 byte inputs. 4 different implementations are provided:
  * Generic C++ (reusing the normal SHA256 code)
  * Specialized C++ for 64-byte inputs, but no special instructions
  * 4-way using SSE4.1 intrinsics
  * 8-way using AVX2 intrinsics

  On my own system (AVX2 capable), I get these benchmarks for computing the Merkle root of 9001 leaves (supported lengths / special instructions / parallellism):
  * 7.2 ms with varsize/naive/1way (master, non-SSE4 hardware)
  * 5.8 ms with size64/naive/1way (this PR, non-SSE4 capable systems)
  * 4.8 ms with varsize/SSE4/1way (master, SSE4 hardware)
  * 2.9 ms with size64/SSE4/4way (this PR, SSE4 hardware)
  * 1.1 ms with size64/AVX2/8way (this PR, AVX2 hardware)

Tree-SHA512: efa32d48b32820d9ce788ead4eb583949265be8c2e5f538c94bc914e92d131a57f8c1ee26c6f998e81fb0e30675d4e2eddc3360bcf632676249036018cff343e
2019-10-01 23:20:06 +02:00
UdjinM6
9f1ee8c70a
scripted-diff: Refactor llmq type consensus param names (#3093)
-BEGIN VERIFY SCRIPT-
sed -i 's/llmqChainLocks/llmqTypeChainLocks/g' src/*.cpp src/*.h src/*/*.cpp src/*/*.h
sed -i 's/llmqForInstantSend/llmqTypeInstantSend/g' src/*.cpp src/*.h src/*/*.cpp src/*/*.h
-END VERIFY SCRIPT-
2019-09-24 12:38:50 +03:00
UdjinM6
70e386580d
Backport meaningful parts of 8149/2b1f6f9ccf36f1e0a2c9d99154e1642f796d7c2b 2019-09-08 21:00:44 -05:00
Pasta
1a0d52814e
#10483 scripted-diff: Use the C++11 keyword nullptr to denote the pointer literal 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-

Signed-off-by: Pasta <pasta@dashboost.org>
2019-08-12 09:07:03 -05:00
PastaPastaPasta
7e4318dda8 Merge bitcoin#8329: Consensus: MOVEONLY: Move functions for tx verification (#3030)
* Merge #8329: Consensus: MOVEONLY: Move functions for tx verification

618d07f MOVEONLY: tx functions to consensus/tx_verify.o (Jorge Timón)

Tree-SHA512: 63fa2777c070a344dbfe61974526a770d962e049881c6f371b0034b1682c1e6e24f47454f01ee35ded20ade34488e023d4467a05369662906b99a73bb5de8497

* remove GetTransactionSigOpCost

Signed-off-by: Pasta <pasta@dashboost.org>

* fix, properly copy (methods moved had diverged from upstream), more fixing

Signed-off-by: Pasta <pasta@dashboost.org>
2019-07-23 12:20:23 +03:00
Alexander Block
2f21e55514 Remove legacy InstantSend code (#3020)
* Remove ppszTypeName from protocol.cpp and reimplement GetCommand

This removes the need to carefully maintain ppszTypeName, which required
correct order and also did not allow to permanently remove old message
types.

To get the command name for an INV type, GetCommandInternal uses a switch
which needs to be maintained from now on.

The way this is implemented also resembles the way it is implemented in
Bitcoin today, but it's not identical. The original PR that introduced the
switch case in Bitcoin was part of the Segwit changes and thus never got
backported. I decided to implement it in a slightly different way that
avoids throwing exceptions when an unknown INV type is encountered.

IsKnownType will now also leverage GetCommandInternal() to figure out if
the INV type is known locally. This has the side effect of old/legacy
message types to return false from now on. We will depend on this side
effect in later commits when we remove legacy InstantSend code.

* Stop handling/relaying legacy IX messages

When we receive an IX message, we simply treat it as a regular TX and relay
it as such.

We'll however still request IX messages when they are announced to us. We
can't simply revert to requesting TX messages in this case as it might
result in the other peer not answering due to the TX not being in mapRelay
yet. We should at some point in the future completely drop handling of IX
messages instead.

* Remove IsNewInstantSendEnabled() and only use IsInstantSendEnabled()

* Remove legacy InstantSend from GUI

* Remove InstantSend from Bitcoin/Dash URIs

* Remove legacy InstantSend from RPC commands

* Remove legacy InstantSend from wallet

* Remove legacy instantsend.h include

* Remove legacy InstantSend from validation code

* Completely remove remaining legacy InstantSend code

* Remove now unused spork

* Fix InstantSend related test failures

* Remove now obsolete auto IS tests

* Make spork2 and spork3 disabled by default

This should have no influence on mainnet as these sporks are actually set
there. This will however affect regtest, which shouldn't have LLMQ based
InstantSend enabled by default.

* Remove instantsend tests from dip3-deterministicmns.py

These were only testing legacy InstantSend

* Fix .QCheckBox#checkUsePrivateSend styling a bit

* s/TXLEGACYLOCKREQUEST/LEGACYTXLOCKREQUEST/

* Revert "verified via InstantSend" back to "verified via LLMQ based InstantSend"

* Use cmd == nullptr instead of !cmd

* Remove last parameter from AvailableCoins call

This was for fUseInstantSend which is not present anymore since rebase
2019-07-09 17:50:08 +03:00
Wladimir J. van der Laan
6a0f565783
Merge #10560: Remove unused constants
dce8239 Comment out unused constant REJECT_DUST (practicalswift)
3289ef4 Remove unused constant MEMPOOL_GD_VERSION (practicalswift)

Tree-SHA512: 8dd772c963037cd0a1db0d5bf5f7a5cce3f5cd8fb6fa983949f9f0c1c8312ffd251a62c1e5d32f3584d2bcc562d8c8a9bf7900609dee9a4f12898caa2be9c38f
2019-07-08 13:50:05 -05:00
Alexander Block
e7d7ecb6e9 Set a few param values to 0 by default
These ones are not necessarey set everytime for all networks.
2019-06-26 12:45:10 -05:00
Alexander Block
40fd1b1685 Make Consensus::LLMQType serializable and use it in serialized classes
Instead of using uint8_t and explicitely casting between the enum
and uint8_t.
2019-05-29 08:06:11 +02:00
Alexander Block
4dc5c0e9ed
Bump "keepOldConnections" by one for all LLMQ types (#2909)
And for llmq5_60, set it to 3 instead of 24 (which was incorrect from the
beginning).

Increasing all LLMQs "keepOldConnections" by one is required because we
don't use the tip when scanning active quorums, but a block that is 8 blocks
in the past. This however means that we need to keep connections for one
additional quorum alive.

This fixes an issue with signing sessions randomly failing with timeouts.
2019-05-10 11:26:39 +02:00
UdjinM6
03021fa53c
Harden DIP3 activation (#2881)
* Harden DIP3 activation height

Also drop all related but no longer used parts.

* Pass current block index to GetCommitmentsFromBlock

* Allow to change dip3 activation height for tests

And fix them.
2019-04-25 18:39:04 +03:00
Alexander Block
7b76e7abb2
Implement BIP9 style deployment for DIP8/ChainLocks and fix a bug with late headers (#2793)
* Also update bestChainLockWithKnownBlock in AcceptedBlockHeader

* Implement BIP9 style DIP8 deployment

* Fix ChainLocks tests

* Apply suggestions from code review

Co-Authored-By: codablock <ablock84@gmail.com>
2019-03-22 11:51:50 +01:00
Alexander Block
a69a5cf4a0 Use smaller (3 out of 5) quorums for regtest/Travis (#2774)
* Require only 3 out of 5 signatures for old InstantSend in regtest mode

* Use LLMQs of size 5 with threshold of 3 for regtest

* Fix wrong check for out-of-range bits in CFixedBitSet

* Reduce number of masternodes in masternode/LLMQ tests

* Add missing \n to LogPrintf call

* Use correct indexes for isolated/receiver/sender nodes

The way it was before resulted in nodes 1-3 being unused and 6-8 being used
for these 3 special nodes even though these are masternodes.

* Avoid stopping/starting isolated node in p2p-instantsend.py

It's enough to disable networking for this node.
2019-03-15 11:48:24 +03:00
Alexander Block
83dbcc483f Implement CInstantSendManager and related P2P messages 2019-03-07 21:14:31 +01:00
UdjinM6
252ee89c34
Implement new algo for quorum connections (#2710)
Instead of trying to manually figure out params for different quorum/ring sizes, connect to nodes at indexes (i+2^k)%n where k: 0..floor(log2(n-1))-1, n: size of the quorum/ring
2019-02-19 13:05:39 +03:00
Alexander Block
f6828b19b6
Merge pull request #2643 from codablock/pr_llmq_chainlocks
Implement LLMQ based ChainLocks
2019-01-29 15:59:05 +01:00
UdjinM6
25cb14b615 Fix confusion between dip3 activation and enforcement (#2651)
* Fix confusion between dip3 activation and enforcement

* drop DIP0003ActivationHeight for now
2019-01-29 15:54:38 +01:00
Alexander Block
29532ba196 Implement and enforce ChainLocks 2019-01-28 12:24:15 +01:00
Alexander Block
e7981e468d Remove fLLMQAllowDummyCommitments from consensus params (#2636)
This should have been removed together with removal of the dummy DKG
2019-01-22 14:16:30 +03:00
Alexander Block
43fd1b352f Implement CSigningManager to process and propagage recovered signatures 2019-01-21 14:42:08 +01:00
Alexander Block
5958f8b81d Remove dkgRndSleepTime from consensus params and make sleeping it non-random 2019-01-10 07:07:58 +01:00
Alexander Block
e1901d24aa Handle review suggestions 2019-01-09 12:16:12 +01:00
Alexander Block
6836f8c38b Implement LLMQ DKG 2019-01-09 12:16:12 +01:00
Alexander Block
0c9fb69687 Harden spork15 on testnet (#2586)
* Replace IsDeterministicMNsSporkActive with IsDIP3Active

IsDIP3Active will now use a fixed parameter from consensus params.
Values for DIP0003Height/DIP0003Hash need to be updated when spork15
activates on mainnet.

Also enforce correct block hash on testnet/mainnet for DIP3 activation
block.

* Remove SPORK_15_DETERMINISTIC_MNS_ENABLED

* Replace all uses of IsDeterministicMNsSporkActive with IsDIP3Active

* Remove DIP3 upgrade-path tests and directly start with DIP3 enabled tests

* Make -masternodeprivkey non-mandatory

This code will vanish later.
2018-12-28 19:13:44 +03:00
Alexander Block
9d33d216b7 Remove temporary code which forked testnet at block 274000 2018-12-13 13:55:46 +01:00
Alexander Block
a4f5ba38b6
Implement CDummyDKG and CDummyCommitment until we have the real DKG merged (#2492)
* Add SPORK_17_QUORUM_DKG_ENABLED spork

* Implement CDummyDKG and CDummyCommitment until we have the real DKG merged

This is only used on testnet/devnet/regtest and will NEVER be used on
mainnet. It is NOT SECURE AT ALL!

See comment in quorums_dummydkg.h for more details.

* Test simple PoSe in DIP3 tests

* Generate 2 instead of 4 blocks per iteration in PoSe tests

4 was based on old chainparams where I used larger phases.

* Only sleep when necessary in PoSe tests

* Fix typo in comment

* Give PoSe tests more time and sync after fast-forward
2018-11-26 16:53:20 +01:00
Alexander Block
22b5952c5a
Implement and enforce DIP6 commitments (#2477)
* Add LLMQ parameters to consensus params

* Add DIP6 quorum commitment special TX

* Implement CQuorumBlockProcessor which validates and handles commitments

* Add quorum commitments to new blocks

* Propagate QFCOMMITMENT messages to all nodes

* Allow special transactions in blocks which have no inputs/outputs

But only for TRANSACTION_QUORUM_COMMITMENT for now.

* Add quorum commitments to self-crafted blocks in DIP3 tests

* Add simple fork logic for current testnet

This should avoid a fork on the current testnet. It only applies to the
current chain which activated DIP3 at height 264000 and block
00000048e6e71d4bd90e7c456dcb94683ae832fcad13e1760d8283f7e89f332f.

When we revert the chain to retest the DIP3 deployment, this fork logic
can be removed again.

* Use quorumVvecHash instead of quorumHash to make null commitments unique

Implementation of https://github.com/dashpay/dips/pull/31

* Re-add quorum commitments after pruning mempool selected blocks

* Refactor CQuorumBlockProcessor::ProcessBlock to have less nested if/else statements

Also add BEGIN/END markers for temporary code.

* Add comments/documentation to LLMQParams

* Move code which determines if a commitment is required into IsCommitmentRequired

This should make the code easier to read and also removes some duplication.

The also changes the error types that are possible from 3 to 2 now. Instead
of having "bad-qc-already-mined" and "bad-qc-not-mining-phase", there is
only "bad-qc-not-allowed" now.

* Use new parameter from consensus parames for the temporary fork
2018-11-23 15:42:09 +01:00
Alexander Block
d40a5ce31f
Properly initialize confirmedHash in CSimplifiedMNListEntry (#2479)
* Properly initialize confirmedHash in CSimplifiedMNListEntry

* Add consensus params for temporary hard-fork on testnet

This hard-fork is required on testnet as we have to fix a few consensus
bugs in DIP3/DIP4. It will also be required to introduce LLMQ commitments
to testnet.

* Add temporary fork-logic for testnet, which sets confirmedHash to null

...before fork activation. Otherwise we'd invalidate all DIP3 blocks on
testnet.

* Bump nTemporaryTestnetForkHeight to 273000
2018-11-23 10:40:46 +01:00
Alexander Block
28a6007a40 Prepare DIP3 for testnet and reuse DIP3 deployment for autoix deployment (#2389)
* Add BIP9 parameters for DIP3 deployment on testnet

* Remove autoix BIP9 deployment and reuse DIP3 deployment

* Add BIP9CheckMasternodesUpgraded to chain params

This controls if miners should check for upgraded masternodes first before
adding BIP9 bits to the block version. This only makes sense in network
where masternodes are up and running before BIP9 activation, which is not
necessarely the case in regtest and devnet.

Also refactor ComputeBlockVersion to use fCheckMasternodesUpgraded instead
of the inverse fAssumeMasternodeIsUpgraded. It is set to false by default
and only set to true in CreateNewBlock.

* Check for upgraded masternodes for DIP3 activation (only mainnet and testnet)

* Bump PROTOCOL_VERSION and DMN_PROTO_VERSION

We probably have nodes with 70211 already running on testnet.
2018-10-26 19:42:52 +03:00
Alexander Block
1c25356ff8
Allow to use low difficulty and higher block rewards for devnet (#2369)
* Allow to use low difficulty and higher block rewards for devnet

Configurable through -minimumdifficultyblocks, -highsubsidyblocks and -highsubsidyfactor

* Fix review comments

* Handle review comments
2018-10-25 09:16:38 +02:00
gladcow
5454bea377 Automatic InstantSend locks for "simple" transactions (#2140)
* add locktransaction rpc call

* Remove special instantsend fee for simple transactions

* Function to check if trx is simple enough to be autolocked

* Automatic lock for all received from peers simple trxes

If we get a new transaction with CInv message and it is "simple" and
is accepted in mempool, we initiate its lock. We don't lock orphan trxes
that accepted in mempool after this trx because they are locked by other
peers.

* Automatically lock simple trxes in wallet

* protocol bump for InstantSend without special fee

* Add function to detect used mempool share

* Mempool threshold for auto IX locks

* Add SPORK_16_INSTANTSEND_AUTOLOCKS spork

* Make autolocks active only when spork SPORK_16_INSTANTSEND_AUTOLOCKS is active

* BIP9 autolocks activation

* revert increasing min peer protocol version for mn rank

* move IsTrxSimple check to CTxLockRequest class

* make MAX_INPUTS_FOR_AUTO_IX private member of CTxLockRequest class

* make AUTO_IX_MEMPOOL_THRESHOLD private member of CInstantSend class

* remove locktransaction RPC call

* tests for automatic IS locks

* fix mempool threshod calculation

* bump mocktime in activate_autoix_bip9

* set node times

* no need to spam the node with gettransaction rpc requests that often

* use `spork active` instead of leaking spork logic into tests

* codestyle fixes

* add test description in comments

* fix typo

* sync test nodes more often during BIP9 activation

* Use 4th bit in BIP9 activation

* Fix comments according codestyle guide

* Call AcceptLockRequest and Vote at the first node creating autoix lock

* fix mempool used memory calculation

* rallback not necessary change in CWallet::CreateTransaction

* test for stopping autolocks for full mempool

* Inject "simple autolockable" txes into txlockrequest logic
2018-09-26 17:17:47 +03:00
Alexander Block
a3c4ee3fda DIP2 changes to CTransaction and CMutableTransaction 2018-08-29 11:36:14 +02:00
Alexander Block
d20100ecd4 DIP0003 deployment 2018-08-29 11:36:14 +02:00
UdjinM6
7d5223b5e4
Network-specific thresholds for required confirmations (IS) (#1962) 2018-03-10 15:35:09 +03:00
UdjinM6
4ffa7bac02
Introduce DIP0001Height (#1973)
Block height at which DIP0001 becomes active

Also drop fDIP0001WasLockedIn
2018-03-08 15:18:24 +03:00
UdjinM6
5b1c4d8a11
Few (mostly trivial) cleanups and fixes (#1940)
* Drop nBudgetProposalEstablishingTime

* Refactor: replace `== COutPoint()` with `.IsNull()`

* Refactor: add `operator bool()` to CMasternodePing

* Refactor: actually use `operator bool()` for CPendingDsaRequest

* Refactor: fixing code style in TrafficGraphData

* Fix some comments and whitespaces

* Drop CGovernanceVote::GetTypeHash()

* Drop legacy X11 code

No longer used... if it ever was used at all.

* Move `<boost/foreach.hpp>` out of coins.h

* Simplify CMasternodeBlockPayees::GetRequiredPaymentsString()

Also less of boost::lexical_cast

* Drop CTxDSIn::nSentTimes

* Fix few warnings

* fix warning (timer)

* fix nit
2018-02-21 19:32:08 +03:00
Alexander Block
99b2789a73 Fix DeserializeAndCheckBlockTest benchmark and store hashDevnetGenesisBlock in consensus (#1888)
* Use Dash block for DeserializeAndCheckBlockTest

Replaced Bitcoin block with the largest Dash block I could find on mainnet.

* Store hashDevnetGenesisBlock in Consensus::Params

Remove the need for chainparams to be available when the devnetGenesis hash
is needed. Fixes a crash in CheckBlockHeader() when called from benchmarking
code, which does not initialize the Params() function.
2018-02-01 20:05:35 +03:00
UdjinM6
8a387ee09c
Drop SPORK_13_OLD_SUPERBLOCK_FLAG and check superblock start hash (#1872) 2018-02-01 15:42:21 +03:00
Alexander Block
c017353a99 Add softfork deployment for BIP147 2018-01-30 20:18:51 +01:00
Alexander Block
b97eecc058 Fix review nits 2018-01-22 08:05:44 +01:00
MarcoFalke
660c027cd5 Merge #9510: [trivial] Fix typos in comments
cc16d99 [trivial] Fix typos in comments (practicalswift)
2018-01-21 12:48:34 +01:00
Wladimir J. van der Laan
7321bfdd6b Merge #8391: Consensus: Remove ISM
122786d Consensus: Remove ISM (NicolasDorier)
2018-01-20 09:22:40 +01:00
Wladimir J. van der Laan
f12610c030 Merge #9125: Make CBlock a vector of shared_ptr of CTransactions
b4e4ba4 Introduce convenience type CTransactionRef (Pieter Wuille)
1662b43 Make CBlock::vtx a vector of shared_ptr<CTransaction> (Pieter Wuille)
da60506 Add deserializing constructors to CTransaction and CMutableTransaction (Pieter Wuille)
0e85204 Add serialization for unique_ptr and shared_ptr (Pieter Wuille)
2018-01-15 06:14:16 +01:00
Wladimir J. van der Laan
22604cbbcc Merge #8607: [doc] Fix doxygen off-by-one comments, fix typos
fafe7b3 contrib: Make fix-copyright-headers.py more portable (MarcoFalke)
fa27c0a [doc] Fix typos in comments, doxygen: Fix comment syntax (MarcoFalke)
fabfd5d [qa] pull-tester: Don't mute zmq ImportError (MarcoFalke)
67a5502 init: Fix typo in help message for -whitelistforcerelay (Wladimir J. van der Laan)
2018-01-09 14:04:21 +01:00
Wladimir J. van der Laan
5323a08afa Merge #7300: [trivial] Add missing copyright headers
fabcee1 Remove copyright header from autogenerated chainparamsseeds.h (MarcoFalke)
fa60d05 Add missing copyright headers (MarcoFalke)
fa7e4c0 Bump copyright headers to 2014 (MarcoFalke)
2017-12-11 08:08:48 +01:00
UdjinM6
3028af19f1
post-DIP0001 cleanup (#1763)
* post-DIP0001 cleanup

also fixes tests

* bump nMinimumChainWork and defaultAssumeValid
2017-12-07 12:43:23 +03:00
UdjinM6
865b61b503
Unify GetNextWorkRequired (#1737)
* unify GetNextWorkRequired

* drop enum
2017-12-01 08:15:11 +03:00
UdjinM6
cd262bf641 DIP0001 implementation (#1594)
* DIP0001 implementation

* add option in ComputeBlockVersion to assume that masternode is upgraded (and skip rank calculation)

* fix mainnet DIP0001 nTimeout

* schedule DIP0001 testnet activation start for Sep 18th, 2017 (bump timeout too)
2017-09-11 17:13:30 +03:00
Alexander Block
ccee103a0e Backport "assumed valid blocks" feature from Bitcoin 0.13 (#1582)
* IBD check uses minimumchain work instead of checkpoints.

This introduces a 'minimum chain work' chainparam which is intended
 to be the known amount of work in the chain for the network at the
 time of software release.  If you don't have this much work, you're
 not yet caught up.

This is used instead of the count of blocks test from checkpoints.

This criteria is trivial to keep updated as there is no element of
subjectivity, trust, or position dependence to it. It is also a more
reliable metric of sync status than a block count.

* Remove GetTotalBlocksEstimate and checkpoint tests that test nothing.

GetTotalBlocksEstimate is no longer used and it was the only thing
 the checkpoint tests were testing.

Since checkpoints are on their way out it makes more sense to remove
 the test file than to cook up a new pointless test.

# Conflicts:
#	src/Makefile.test.include
#	src/test/Checkpoints_tests.cpp

* IsInitialBlockDownload no longer uses header-only timestamps.

This avoids a corner case (mostly visible on testnet) where bogus
 headers can keep nodes in IsInitialBlockDownload.

* Delay parallel block download until chain has sufficient work

nMinimumChainWork is an anti-DoS threshold; wait until we have a proposed
tip with more work than that before downloading blocks towards that tip.

* Add timeout for headers sync

At startup, we choose one peer to serve us the headers chain, until
our best header is close to caught up.  Disconnect this peer if more
than 15 minutes + 1ms/expected_header passes and our best header
is still more than 1 day away from current time.

* Introduce assumevalid setting to skip presumed valid scripts.

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.

* Add consensusParams to FindNextBlocksToDownload

* Adjust check in headers timeout logic to align with 144 blocks in Dash
2017-08-23 17:21:08 +03:00
UdjinM6
ff30aed68f Align with btc 0.12 (#1409)
* Implement BIP 9 GBT changes

- BIP9DeploymentInfo struct for static deployment info
- VersionBitsDeploymentInfo: Avoid C++11ism by commenting parameter names
- getblocktemplate: Make sure to set deployments in the version if it is LOCKED_IN
- In this commit, all rules are considered required for clients to support

* qa/rpc-tests: bip9-softforks: Add tests for getblocktemplate versionbits updates

* getblocktemplate: Explicitly handle the distinction between GBT-affecting softforks vs not

* getblocktemplate: Use version/force mutation to support pre-BIP9 clients

* Don't use floating point

Github-Pull: #8317
Rebased-From: 477777f250

* Send tip change notification from invalidateblock

This change is needed to prevent sync_blocks timeouts in the mempool_reorg
test after the sync_blocks update in the upcoming commit
"[qa] Change sync_blocks to pick smarter maxheight".

This change was initially suggested by Suhas Daftuar <sdaftuar@chaincode.com>
in https://github.com/bitcoin/bitcoin/pull/8680#r78209060

Github-Pull: #9196
Rebased-From: 67c6326abd

* torcontrol: Explicitly request RSA1024 private key

When generating a new service key, explicitly request a RSA1024 one.

The bitcoin P2P protocol has no support for the longer hidden service names
that will come with ed25519 keys, until it does, we depend on the old
hidden service type so make this explicit.

See #9214.

Github-Pull: #9234
Rebased-From: 7d3b627395

* Bugfix: FRT: don't terminate when keypool is empty

Github-Pull: #9295
Rebased-From: c24a4f5981

* add fundrawtransaction test on a locked wallet with empty keypool

Github-Pull: #9295
Rebased-From: 1a6eacbf3b
2017-04-11 13:53:54 +03:00