c0d91fc69c67e6f7123326d4f3caeac069d2637b Add release note for #33050 and #33183 error string changes (Antoine Poinsot)
b3f781a0ef4b763ef7ba8b5b20871a7707ec090e contrib: adapt max reject string size in tracing demo (Antoine Poinsot)
9a04635432183c437829339dbf10e7d702581010 scripted-diff: validation: rename mandatory errors into block errors (Antoine Poinsot)
Pull request description:
This is a followup to #33050 now that it's merged. Using "block"/"mempool" as the error reason is clearer to a user than "mandatory"/"non-mandatory". The "non-mandatory" errors got renamed to "mempool" in #33050 (see https://github.com/bitcoin/bitcoin/pull/33050#discussion_r2230103371). This takes care of the second part of the renaming.
ACKs for top commit:
fjahr:
utACK c0d91fc69c67e6f7123326d4f3caeac069d2637b
davidgumberg:
lgtm ACK c0d91fc69c
ajtowns:
utACK c0d91fc69c67e6f7123326d4f3caeac069d2637b
Crypt-iQ:
utACK c0d91fc69c67e6f7123326d4f3caeac069d2637b
janb84:
utACK c0d91fc69c67e6f7123326d4f3caeac069d2637b
instagibbs:
ACK c0d91fc69c67e6f7123326d4f3caeac069d2637b
Tree-SHA512: b463e633c57dd1eae7c49d23239a59066a672f355142ec194982eddc927a7646bc5cde583dc8d6f45075bf5cbb96dbe73f7e339e728929b0eff356b674d1b68c
ba84a25deec0b3b9b94ee51b373e715fec995791 [doc] update mempool-replacements.md for incremental relay feerate change (glozow)
18720bc5d5b4d3acf91060859180d72cbfdf59b7 [doc] release note for min feerate changes (glozow)
6da5de58cabc4133c379baa50845e30e5bc6b3e4 [policy] lower default minrelaytxfee and incrementalrelayfee to 100sat/kvB (glozow)
2e515d2897eaa5a9b012eb78aef105e1cf80d42b [prep/test] make wallet_fundrawtransaction's minrelaytxfee assumption explicit (glozow)
457cfb61b5323a13218b3cfb5a6a6d8b3a7c5f7f [prep/util] help MockMempoolMinFee handle more precise feerates (glozow)
3eab8b724044dc321f70e5eed66b149713158a04 [prep/test] replace magic number 1000 with respective feerate vars (glozow)
5f2df0ef78be7b24798d0983c9b962740608f1f4 [miner] lower default -blockmintxfee to 1sat/kvB (glozow)
d6213d6aa114aeed6804a585491d741386fd2739 [doc] assert that default min relay feerate and incremental are the same (glozow)
1fbee5d7b61b83e68e4230c8a97ca308de92c4c3 [test] explicitly check default -minrelaytxfee and -incrementalrelayfee (glozow)
72dc18467dbfc16cdbda2dd109b087243b397799 [test] RBF rule 4 for various incrementalrelayfee settings (glozow)
85f498893f54ea7d84f2bdf12aa35d198edf8a72 [test] check bypass of minrelay for various minrelaytxfee settings (glozow)
e5f896bb1f052fb8c7811c6024cb49143b427512 [test] check miner doesn't select 0fee transactions (glozow)
Pull request description:
ML post for discussion about the general concept, how this impacts the wider ecosystem, philosophy about minimum feerates, etc: https://delvingbitcoin.org/t/changing-the-minimum-relay-feerate/1886
This PR is inspired by #13922 and #32959 to lower the minimum relay feerate in response to bitcoin's exchange rate changes in the last ~10 years. It lowers the default `-minrelaytxfee` and `-incrementalrelayfee`, and knocks `-blockmintxfee` down to the minimum nonzero setting. Also adds some tests for the settings and pulls in #32750.
The minimum relay feerate is a DoS protection rule, representing a price on the network bandwidth used to relay transactions that have no PoW. While relay nodes don't all collect fees, the assumption is that if nodes on the network use their resources to relay this transaction, it will reach a miner and the attacker's money will be spent once it is mined. The incremental relay feerate is similar: it's used to price the relay of replacement transactions (the additional fees need to cover the new transactions at this feerate) and evicted transactions (following a trim, the new mempool minimum feerate is the package feerate of what was removed + incremental).
Also note that many nodes on the network have elected to relay/mine lower feerate transactions. Miners (some say up to 85%) are choosing to mine these low feerate transactions instead of leaving block space unfilled, but these blocks have extremely poor compact block reconstruction rates with nodes that rejected or didn't hear about those transactions earlier.
- https://github.com/bitcoin/bitcoin/pull/33106#issuecomment-3155627414
- https://x.com/caesrcd/status/1947022514267230302
- https://mempool.space/block/00000000000000000001305770e0aa279dcd8ba8be18c3d5cf736a26f77e06fd
- https://mempool.space/block/00000000000000000001b491649ec030aa8e003e1f4f9d3b24bb99ba16f91e97
- https://x.com/mononautical/status/1949452586391855121
While it wouldn't make sense to loosen DoS restrictions recklessly in response to these events, I think the current price is higher than necessary, and this motivates us changing the default soon. Since the minimum relay feerate defines an amount as too small based on what it costs the attacker, it makes sense to consider BTC's conversion rate to what resources you can buy in the "real world."
Going off of [this comment](https://github.com/bitcoin/bitcoin/pull/32959#issuecomment-3095260286) and [this comment](https://github.com/bitcoin/bitcoin/pull/33106#issuecomment-3142444090)
- Let's say an attacker wants to use/exhaust the network's bandwidth, and has the choice between renting resources from a commercial provider and getting the network to "spam" itself it by sending unconfirmed transactions. We'd like the latter to be more expensive than the former.
- The bandwidth for relaying a transaction across the network is roughly its serialized size (plus relay overhead) x number of nodes. A 1000vB transaction is 1000-4000B serialized. With 100k nodes, that's 0.1-0.4GB
- If the going rate for ec2 bandwidth is 10c/GB, that's like 1-4c per kvB of transaction data
- Then a 1000vB transaction should pay at least 4c
- $0.04 USD is 40 satoshis at 100k USD/BTC
- Baking in some margin for changes in USD/BTC conversion rate, number of nodes (and thus bandwidth), and commercial service costs, I think 50-100 satoshis is on the conservative end but in the right ballpark
- At least 97% of the recent sub-1sat/vB transactions would be accepted with a new threshold of 0.1sat/vB: https://github.com/bitcoin/bitcoin/pull/33106#issuecomment-3156213089
List of feerates that are changed and why:
- min relay feerate: significant conversion rate changes, see above
- incremental relay feerate: should follow min relay feerate, see above
- block minimum feerate: shouldn’t be above min relay feerate, otherwise the node accepts transactions it will never mine. I've knocked it down to the bare minimum of 1sat/kvB. Now that we no longer have coin age priority (removed in v0.15), I think we can leave it to the `CheckFeeRate` policy rule to enforce a minimum entry price, and the block assembly code should just fill up the block with whatever it finds in mempool.
List of feerates that are not changed and why:
- dust feerate: this feerate cannot be changed as flexibly as the minrelay feerate. A much longer record of low feerate transactions being mined is needed to motivate a decrease there.
- maxfeerate (RPC, wallet): I think the conversion rate is relevant as well, but out of scope for this PR
- minimum feerate returned by fee estimator: should be done later. In the past, we've excluded new policy defaults from fee estimation until we feel confident they represent miner policy (e.g. #9519). Also, the fee estimator itself doesn't have support for sub-1sat/vB yet.
- all wallet feerates (mintxfee, fallbackfee, discardfee, consolidatefeerate, WALLET_INCREMENTAL_RELAY_FEE, etc.): should be done later. Our standard procedure is to do wallet changes at least 1 release after policy changes.
ACKs for top commit:
achow101:
ACK ba84a25deec0b3b9b94ee51b373e715fec995791
gmaxwell:
ACK ba84a25deec0b3b9b94ee51b373e715fec995791
jsarenik:
Tested ACK ba84a25deec0b3b9b94ee51b373e715fec995791
darosior:
ACK ba84a25deec0b3b9b94ee51b373e715fec995791
ajtowns:
ACK ba84a25deec0b3b9b94ee51b373e715fec995791
davidgumberg:
crACK ba84a25dee
w0xlt:
ACK ba84a25dee
caesrcd:
reACK ba84a25deec0b3b9b94ee51b373e715fec995791
ismaelsadeeq:
re-ACK ba84a25deec0b3b9b94ee51b373e715fec995791
Tree-SHA512: b4c35e8b506b1184db466551a7e2e48bb1e535972a8dbcaa145ce3a8bfdcc70a8807dc129460f129a9d31024174d34077154a387c32f1a3e6831f6fa5e9c399e
5c74a0b397cb3db94761bad78801eed4544155b9 config: add DEBUG_ONLY -logratelimit (Eugene Siegel)
9f3b017bcc067bba1d1682a5d4e65b5450dc10c4 test: logging_filesize_rate_limit improvements (stickies-v)
350193e5e2efabb3eb66197b91869b946ec5428c test: don't leak log category mask across tests (stickies-v)
05d7c22479bf96bab9f8c8b8fa90368429ad2c88 test: add ReadDebugLogLines helper function (stickies-v)
3d630c2544e19480268426cda245796d4ce34ac3 log: make m_limiter a shared_ptr (stickies-v)
e8f9c37a3b4c9c88baddb556c4b33a4cbba1f614 log: clean up LogPrintStr_ and Reset, prefix all logs with "[*]" when there are suppressions (Eugene Siegel)
3c7cae49b692bb6bf5cae5ee23479091bed0b8be log: change LogLimitStats to struct LogRateLimiter::Stats (Eugene Siegel)
8319a134684df2240057a5e8afaa6ae441fb8a58 log: clarify RATELIMIT_MAX_BYTES comment, use RATELIMIT_WINDOW (Eugene Siegel)
5f70bc80df06ca85d44e8201d47e7086e971fdea log: remove const qualifier from arguments in LogPrintFormatInternal (Eugene Siegel)
b8e92fb3d4137f91fe6a54829867fc54357da648 log: avoid double hashing in SourceLocationHasher (Eugene Siegel)
616bc22f131132b9239ef362dca8c6bce000a539 test: remove noexcept(false) comment in ~DebugLogHelper (Eugene Siegel)
Pull request description:
Followups to #32604.
There are two behavior changes:
- prefixing with `[*]` is done to all logs (regardless of `should_ratelimit`) per [this comment](https://github.com/bitcoin/bitcoin/pull/32604#discussion_r2195710943).
- a DEBUG_ONLY `-disableratelimitlogging` flag is added by default to functional tests so they don't encounter rate limiting.
ACKs for top commit:
stickies-v:
re-ACK 5c74a0b397cb3db94761bad78801eed4544155b9
achow101:
ACK 5c74a0b397cb3db94761bad78801eed4544155b9
l0rinc:
Code review ACK 5c74a0b397cb3db94761bad78801eed4544155b9
Tree-SHA512: d32db5fcc28bb9b2a850f0048c8062200a3725b88f1cd9a0e137da065c0cf9a5d22e5d03cb16fe75ea7494801313ab34ffec7cf3e8577cd7527e636af53591c4
2b00030af84efd50cfc60125db4ae49da6b7aa9a interfaces, chain, refactor: Remove inaccurate getActiveChainLocator (pablomartin4btc)
110a0f405cd696ebfd6edce07c1b347723e84a0f interfaces, chain, refactor: Remove unused getTipLocator (pablomartin4btc)
Pull request description:
Remove `Chain::getTipLocator`, `Chain::GetLocator()`, and `Chain::getActiveChainLocator`:
- `Chain::getTipLocator` is no longer used.
- `Chain::GetLocator`, replaced its call by `GetLocator()`, which uses `LocatorEntries`, avoiding direct access to the chain itself (change suggested by l0rinc while reviewing this PR to maintain consistency with the overall refactoring).
- `Chain::getActiveChainLocator`, whose name was misleading, has functionality redundant with Chain::findBlock.
- Additionally, the comment for getActiveChainLocator became inaccurate following changes in commit ed470940cd (from PR #25717).
This is a [follow-up](https://github.com/bitcoin/bitcoin/pull/29652#issuecomment-3151665095) to #29652.
ACKs for top commit:
achow101:
ACK 2b00030af84efd50cfc60125db4ae49da6b7aa9a
furszy:
ACK 2b00030af84efd50cfc60125db4ae49da6b7aa9a
stickies-v:
ACK 2b00030af84efd50cfc60125db4ae49da6b7aa9a
w0xlt:
ACK 2b00030af8
Tree-SHA512: b12ba6a15feeaeec692d69204a6e155e3af43edfac25597dabf14cacca1e4a2152574816e58dc544f39043c5721f5e707acf544f4541d3b9c0f8c0c40069215e
67e186deb01749ec6a3691d0b763bdc89ab2328f doc: update wallet build instruction (Sjors Provoost)
Pull request description:
Sqlite and the wallet are no longer optional, but they can still be opted out of. This PR updates the build instructions accordingly.
Updating this text now reduces churn in #31802.
ACKs for top commit:
jonatack:
ACK 67e186deb01749ec6a3691d0b763bdc89ab2328f
achow101:
ACK 67e186deb01749ec6a3691d0b763bdc89ab2328f
w0xlt:
reACK 67e186deb0
pablomartin4btc:
ACK 67e186deb01749ec6a3691d0b763bdc89ab2328f
janb84:
ACK 67e186deb01749ec6a3691d0b763bdc89ab2328f
Tree-SHA512: ea87a83c9fcb884f9ca380a006a93ede3cd1af5eb2bb5ccb54fc8124faa532e9473ae2461d775439da59e86178fbd04983113b43ce3d4c382cabe27866acd027
de0675f9de5feae1f070840ad7218b1378fb880b refactor: Move `transaction_identifier.h` to primitives (marcofleon)
6f068f65de17951dc459bc8637e5de15b84ca445 Remove implicit uint256 conversion and comparison (marcofleon)
9c24cda72edb2085edfa75296d6b42fab34433d9 refactor: Convert remaining instances from uint256 to Txid (marcofleon)
d2ecd6815d89c9b089b55bc96fdf93b023be8dda policy, refactor: Convert uint256 to Txid (marcofleon)
f6c0d1d23128f742dfdda253752cba7db9bb0679 mempool, refactor: Convert uint256 to Txid (marcofleon)
aeb0f783305c923ee7667c46ca0ff7e1b96ed45c refactor: Convert `mini_miner` from uint256 to Txid (marcofleon)
326f24472487dc7f447839136db2ccf60833e9a2 refactor: Convert RPCs and `merkleblock` from uint256 to Txid (marcofleon)
49b3d3a92a7250e80c56ff8c351cf1670e32c1a2 Clean up `FindTxForGetData` (marcofleon)
Pull request description:
This is the final leg of the [type safety refactor](https://github.com/bitcoin/bitcoin/pull/32189).
All of these changes are straightforward `uint256` --> `Txid` along with any necessary explicit conversions. Also, `transaction_identifier.h` is moved to primitives in the last commit, as `Txid` and `Wtxid` become fundamental types after this PR.
ACKs for top commit:
stickies-v:
re-ACK de0675f9de5feae1f070840ad7218b1378fb880b, no changes since a20724d926d5844168c6a13fa8293df8c8927efe except address review nits.
janb84:
re ACK de0675f9de5feae1f070840ad7218b1378fb880b
dergoegge:
re-ACK de0675f9de5feae1f070840ad7218b1378fb880b
theStack:
Code-review ACK de0675f9de5feae1f070840ad7218b1378fb880b
Tree-SHA512: 2413160fca7ab146a8d79d18ce3afcf7384cacc73c513d41928904aa453b4dd7a350064cee71e9c5d015da5904c7c81ac17603e50a47441ebc5b0c653235dd08
The Script errors were last touched in 2020. This value was calculated after that
in 2022 (commit 4b7aec2951fe4595946cdc804b0dec1921d79d05). The previous commit
made the size of the largest reject reason string 4 characters smaller ("mandatory"
became "block"), so adapt the constant.
Using "block" or "mempool" as the prefix in place of "mandatory" or "non-mandatory" is clearer
to a user. "non-mandatory" was renamed into "mempool" as part of #33050. This takes care of the
other half of this renaming as a scripted diff.
-BEGIN VERIFY SCRIPT-
sed -i 's/mandatory-script-verify/block-script-verify/g' $(git grep -l mandatory-script-verify)
-END VERIFY SCRIPT-
776a163374168dd96a9ad7c2ff9666d838477dfa guix: increase maximum allowed (runtime) GCC to 7 (fanquake)
Pull request description:
Fixes:
```bash
/distsrc-base/distsrc-d3b8a54a8120-x86_64-linux-gnu/build/bin/bitcoind: symbol __divmodti4 from unsupported version GCC_7.0.0(14)
/distsrc-base/distsrc-d3b8a54a8120-x86_64-linux-gnu/build/bin/bitcoind: failed IMPORTED_SYMBOLS
```
which is occuring after #32750. I can't see any supported distro that is shipping a new enough glibc (2.31), but a GCC older than 7.0.
Fixes#33177.
ACKs for top commit:
hebasto:
ACK 776a163374168dd96a9ad7c2ff9666d838477dfa.
Tree-SHA512: 8e5a77c509eb6164314fdb644ea199916e151eb0c7f48703f3a2bdedf0dea29b7f402ceacb2aaf42ebffba59080cefbb84253b2721047d973a851090447ba3b5
The getActiveChainLocator method name was misleading, and its functionality
duplicated `Chain::findBlock`. This commit removes the method and replaces
all its usages with direct `Chain::findBlock` calls.
Additionally, the comment of getActiveChainLocator has been outdated since
commit ed47094 from #25717.
Finally, in CWallet::ScanForWalletTransactions, the findBlock calls are now
unified into a single call at the start of the function.
Co-authored-by: Ryan Ofsky <ryan@ofsky.org>
Co-authored-by: Matias Furszyfer <mfurszy@protonmail.com>
Also removed CChain::GetLocator() and replaced its call
with GetLocator() which uses LocatorEntries instead.
Co-authored-by: ryanofsky <ryan@ofsky.org>
Co-authored-by: l0rinc <l0rinc@users.noreply.github.com>
876dbdfb4702410dfd4037614dc9298a0c09c63e tests: drop expect_disconnect behaviour for tx relay (Anthony Towns)
b29ae9efdfeeff774e32ee433ce67d8ed8ecd49f validation: only check input scripts once (Anthony Towns)
266dd0e10d08c0bfde63205db15d6c210a021b90 net_processing: drop MaybePunishNodeForTx (Anthony Towns)
Pull request description:
Because we do not discourage nodes for transactions we consider non-standard, we don't get any DoS protection from this check in adversarial scenarios, so remove the check entirely both to simplify the code and reduce the risk of splitting the network due to changes in tx relay policy.
Then, because we no longer make use of the distinction between consensus and standardness failures during script validation, don't re-validate each script with only-consensus rules, reducing the cost to us of transactions that we won't relay.
ACKs for top commit:
achow101:
ACK 876dbdfb4702410dfd4037614dc9298a0c09c63e
darosior:
re-ACK 876dbdfb4702410dfd4037614dc9298a0c09c63e
sipa:
re-ACK 876dbdfb4702410dfd4037614dc9298a0c09c63e
glozow:
ACK 876dbdfb4702410dfd4037614dc9298a0c09c63e
Tree-SHA512: 8bb0395766dde54fc48f7077b80b88e35581aa6e3054d6d65735965147abefffa7348f0850bb3d46f6c2541fd384ecd40a00a57fa653adabff8a35582e2d1811
db225cea56b0531cc42d4b89dc61b02890f432ff wallet, refactor: Replace GetDisplayName() with LogName() (Ryan Ofsky)
01737883b3ff8051253c961b7dde50d055104ef9 wallet: Translate [default wallet] string in progress messages (Ryan Ofsky)
Pull request description:
Noticed while reviewing https://github.com/bitcoin/bitcoin/pull/31287#discussion_r1843809721 that the [default wallet] part of progress messages remains untranslated while the rest of the string is translated.
Fix this in all places where `CWallet::ShowProgress` (which has a cancel button) and `Chain::showProgress` (which doesn't have a cancel button) are called by making "default wallet" into a translated string.
ACKs for top commit:
achow101:
ACK db225cea56b0531cc42d4b89dc61b02890f432ff
pablomartin4btc:
ACK db225cea56b0531cc42d4b89dc61b02890f432ff
furszy:
utACK db225cea56b0531cc42d4b89dc61b02890f432ff
Tree-SHA512: 3e76e22ee692a7403d61c66615f56d0fa5f7883dd47553bcaec2f9ffd942daaa90ceb61830206bece50da53dcd737b6438c36bcb086030b2deb68c44172f3931
- Add helper functions and structs to improve readability and
reusability of test code
- Make tests more specific by comparing all produced log lines with
expected log lines instead of relying on approximations or proxies.
db3228042b2278faf7713a6ed40cdbf8e62b8fd4 util: detect and warn when using exFAT on macOS (willcl-ark)
Pull request description:
exFAT is known to cause intermittent corruption on MacOS.
Therefore we should warn when using this fs format for either the blocks or data directories.
See #28552 for more context.
ACKs for top commit:
l0rinc:
ACK db3228042b2278faf7713a6ed40cdbf8e62b8fd4
marcofleon:
reACK db3228042b2278faf7713a6ed40cdbf8e62b8fd4
ismaelsadeeq:
reACK db3228042b2278faf7713a6ed40cdbf8e62b8fd4
Tree-SHA512: e4453a8e24b35c135e4eb0b4e47fe0c80f8b54700f458909c403aa37a0d2979ee165347bcd76e48e4d1ae5d3bae13f50e6afe714e33226a52f907b95df9d3b46
Fixes:
```bash
/distsrc-base/distsrc-d3b8a54a8120-x86_64-linux-gnu/build/bin/bitcoind: symbol __divmodti4 from unsupported version GCC_7.0.0(14)
/distsrc-base/distsrc-d3b8a54a8120-x86_64-linux-gnu/build/bin/bitcoind: failed IMPORTED_SYMBOLS
```
which is occuring after #32750. I can't see any supported distro that is
shipping a new enough glibc (2.31), but a GCC older than 7.0.
554befd8738ea993b3b555e7366558a9c32c915c test: revive `getcoinscachesizestate` (Lőrinc)
64ed0fa6b7a2b637f236c3abf2f045adf6a067cf refactor: modernize `LargeCoinsCacheThreshold` (Lőrinc)
1b40dc02a6a292239037ac5a44e0d0c9506d5fa2 refactor: extract `LargeCoinsCacheThreshold` from `GetCoinsCacheSizeState` (Lőrinc)
Pull request description:
After the changes in https://github.com/bitcoin/bitcoin/pull/25325 `getcoinscachesizestate` [always ended the test early](https://maflcko.github.io/b-c-cov/test_bitcoin.coverage/src/test/validation_flush_tests.cpp.gcov.html#L65):
| File | Line Rate | Line Total | Line Hit | Branch Rate | Branch Total | Branch Hit |
|------------------------------|---------:|-----------:|---------:|------------:|-------------:|-----------:|
| validation_flush_tests.cpp | **31.5 %** | 54 | 17 | 22.3 % | 242 | 54 |
The test revival was [extracted from a related PR](https://github.com/bitcoin/bitcoin/pull/28531#discussion_r2109417797) where it was [discovered](https://github.com/bitcoin/bitcoin/pull/28531#discussion_r2044004503).
ACKs for top commit:
achow101:
ACK 554befd8738ea993b3b555e7366558a9c32c915c
LarryRuane:
ACK 554befd8738ea993b3b555e7366558a9c32c915c
w0xlt:
ACK 554befd873
Tree-SHA512: f5057254de8fb3fa627dd20fee6818cfadeb2e9f629f9972059ad7b32e01fcd7dc9922eff9da2d363b36a9f0954d9bc1c4131d47b2a9c6cc348d9864953b91be
Let's say an attacker wants to use/exhaust the network's bandwidth, and
has the choice between renting resources from a commercial provider and
getting the network to "spam" itself it by sending unconfirmed
transactions. We'd like the latter to be more expensive than the former.
The bandwidth for relaying a transaction across the network is roughly
its serialized size (plus relay overhead) x number of nodes. A 1000vB
transaction is 1000-4000B serialized. With 100k nodes, that's 0.1-0.4GB
If the going rate for commercial services is 10c/GB, that's like 1-4c per kvB
of transaction data, so a 1000vB transaction should pay at least $0.04.
At a price of 120k USD/BTC, 100sat is about $0.12. This price allows us
to tolerate a large decrease in the conversion rate or increase in the
number of nodes.
Back when we implemented coin age priority as a miner policy, miners
mempools might admit transactions paying very low fees, but then want to
set a higher fee for block inclusion. However, since coin age priority
was removed in v0.15, the block assembly policy is solely based on fees,
so we do not need to apply minimum feerate rules in multiple places. In
fact, the block assembly policy ignoring transactions that are added to
the mempool is likely undesirable as we waste resources accepting and
storing this transaction.
Instead, rely on mempool policy to enforce a minimum entry feerate to
the mempool (minrelaytxfee). Set the minimum block feerate to the
minimum non-zero amount (1sat/kvB) so it collects everything it finds in
mempool into the block.
Moves the file from `src/util` to `src/primitives`. Now that the
refactor is complete, Txid and Wtxid are fundamental types, so it
makes sense for them to reside in `src/primitives`.
These remaining miscellaneous changes were identified by commenting out
the `operator const uint256&` conversion and the `Compare(const uint256&)`
method from `transaction_identifier.h`.
ca64b71ed5ecbef66d4bb294dfcdff638157632c test: fix scripts in `blockfilter_basic_test` (UdjinM6)
Pull request description:
`std::vector` fill ctor is like this:
```
// Constructs a vector with `count` copies of elements with value `value`.
explicit vector( size_type count, const T& value = T(), const Allocator& alloc = Allocator() ); // (until C++11)
vector( size_type count, const T& value, const Allocator& alloc = Allocator() ); // (since C++11)(constexpr since C++20)
```
https://en.cppreference.com/w/cpp/container/vector/vector.html
i.e. `std::vector<unsigned char>(0, 65)` means a vector with `0` copies of `65` which feels wrong. I believe `count` and `value` were swapped in `blockfilter_basic_test` scripts.
ACKs for top commit:
furszy:
ACK ca64b71ed5ecbef66d4bb294dfcdff638157632c
pablomartin4btc:
ACK ca64b71ed5ecbef66d4bb294dfcdff638157632c
janb84:
ACK ca64b71ed5ecbef66d4bb294dfcdff638157632c
Tree-SHA512: 2cfc7f09788b0a1afdffc9cd6663204c7f1775dabdbe1046cdcd42936c479658c348cb46e0d8835645e6c508e8b40a598cbe6534084b6780a6b60378bcbd0f96
83950275eddacac56c58a7a3648ed435a5593328 qa: unit test sighash caching (Antoine Poinsot)
b221aa80a081579b8d3b460e3403f7ac0daa7139 qa: simple differential fuzzing for sighash with/without caching (Antoine Poinsot)
92af9f74d74e76681f7d98f293eab226972137b4 script: (optimization) introduce sighash midstate caching (Pieter Wuille)
8f3ddb0bccebc930836b4a6745a7cf29b41eb302 script: (refactor) prepare for introducing sighash midstate cache (Pieter Wuille)
9014d4016ad9351cb59b587541895e55f5d589cc tests: add sighash caching tests to feature_taproot (Pieter Wuille)
Pull request description:
This introduces a per-txin cache for sighash midstate computation to the script interpreter for legacy (bare), P2SH, P2WSH, and (as collateral effect, but not actually useful) P2WPKH. This reduces the impact of certain types of quadratic hashing attacks that use standard transactions. It is not known to improve the situation for attacks involving non-standard transaction attacks.
The cache works by remembering for each of the 6 sighash modes a `(scriptCode, midstate)` tuple, which gives a midstate `CSHA256` object right before the appending of the sighash type itself (to permit all 256, rather than just the 6 ones that match the modes). The midstate is only reused if the `scriptCode` matches. This works because - within a single input - only the sighash type and the `scriptCode` affect the actual sighash used.
The PR implements two different approaches:
* The initial commits introduce the caching effect always, for both consensus and relay relation validation. Despite being primarily intended for improving the situation for standard transactions only, I chose this approach as the code paths are already largely common between the two, and this approach I believe involves fewer code changes than a more targetted approach, and furthermore, it should not hurt (it may even help common multisig cases slightly).
* The final commit changes the behavior to only using the cache for non-consensus script validation. I'm open to feedback about whether adding this commit is worth it.
Functional tests are included that construct contrived cases with many sighash types (standard and non-standard ones) and `OP_CODESEPARATOR`s in all script types (including P2TR, which isn't modified by this PR).
ACKs for top commit:
achow101:
ACK 83950275eddacac56c58a7a3648ed435a5593328
dergoegge:
Code review ACK 83950275eddacac56c58a7a3648ed435a5593328
darosior:
re-ACK 83950275eddacac56c58a7a3648ed435a5593328
Tree-SHA512: 65ae8635429a4d563b19969bac8128038ac2cbe01d9c9946abd4cac3c0780974d1e8b9aae9bb83f414e5d247a59f4a18fef5b37d93ad59ed41b6f11c3fe05af4
