b6f0593f43 doc: add release note about testmempoolaccept debug-message (Matthew Zipkin)
f9cac63523 test: cover testmempoolaccept debug-message in RBF test (Matthew Zipkin)
f9650e18ea rbf: remove unecessary newline at end of error string (Matthew Zipkin)
221c789e91 rpc: include verbose reject-details field in testmempoolaccept response (Matthew Zipkin)
Pull request description:
Adds a new field `reject-details` in `testmempoolaccept` responses to include `m_debug_message` from `ValidationState`. This string is the complete error message thrown by the mempool in response to `sendrawtransaction`.
The extra verbosity is helpful to consumers of `testmempoolaccept`, which is sort of a debug tool anyway.
example:
>
> {
> "txid": "07d7a59a7bdad4c3a5070659ea04147c9b755ad9e173c52b6a38e017abf0f5b8",
> "wtxid": "5dc243b1b92ee2f5a43134eb3e23449be03d1abb3d7f3c03c836ed0f13c50185",
> "allowed": false,
> "reject-reason": "insufficient fee",
> "reject-details": "insufficient fee, rejecting replacement 07d7a59a7bdad4c3a5070659ea04147c9b755ad9e173c52b6a38e017abf0f5b8; new feerate 0.00300000 BTC/kvB <= old feerate 0.00300000 BTC/kvB"
> }
ACKs for top commit:
rkrux:
re-ACK b6f0593f43
glozow:
ACK b6f0593f43
Tree-SHA512: 340b8023d59cefa84598879c4efdb7c399a3f62da126e87c595523f302e53d33098fc69da9c5f8c92b7580dc75466c66cea372051f935b197265648fe15c43a3
fa63b8232f test: generateblocks called by multiple threads (MarcoFalke)
fa62c8b1f0 rpc: Extend scope of validation mutex in generateblock (MarcoFalke)
Pull request description:
The mutex (required by TestBlockValidity) must be held after creating the block, until TestBlockValidity is called. Otherwise, it is possible that the chain advances in the meantime and leads to a crash in TestBlockValidity: `Assertion failed: pindexPrev && pindexPrev == chainstate.m_chain.Tip() (validation.cpp: TestBlockValidity: 4338)`
Fixes#31562
ACKs for top commit:
davidgumberg:
reACK fa63b8232f
achow101:
ACK fa63b8232f
ismaelsadeeq:
re-ACK fa63b8232f
mzumsande:
utACK fa63b8232f
Tree-SHA512: 3dfda1192af52546ab11fbffe44af8713073763863f4a63fbcdbdf95b1c6cbeb003dc4b8b29e7ec67362238ad15e07d8f6855832a0c68dc5370254f8cbf9445c
bc43ecaf6d test: add functional test for balance after snapshot completion (Martin Zumsande)
226d03dd61 validation: Send correct notification during snapshot completion (Martin Zumsande)
Pull request description:
After AssumeUtxo background sync is completed in a `ActivateBestChain()` call, the `GetRole()` function called with `BlockConnected()` returns `ChainstateRole::NORMAL` instead of `ChainstateRole::BACKGROUND` for this chainstate.
This would make the wallet (which ignores `BlockConnected` notifications for the background chainstate) process it, change `m_last_block_processed_height` to the (ancient) snapshot height, and display an incorrect balance.
Fix this by caching the chainstate role before calling `ActivateBestChainStep()`.
Also contains a test for this situation that fails on master.
Fixes#31546
ACKs for top commit:
fjahr:
re-ACK bc43ecaf6d
achow101:
ACK bc43ecaf6d
furszy:
Code review ACK bc43ecaf6d
TheCharlatan:
lgtm ACK bc43ecaf6d
Tree-SHA512: c5db677cf3fbab3a33ec127ec6c27c8812299e8368fd3c986bc34d0e515c4eb256f6104479f27829eefc098197de3af75d64ddca636b6b612900a0e21243e4f2
fa0998f0a0 test: Avoid intermittent error in assert_equal(pruneheight_new, 248) (MarcoFalke)
Pull request description:
Fixes https://github.com/bitcoin/bitcoin/issues/31446
The test uses the P2P network to sync blocks, which has no inherent guarantee that the blocks are sent and received in the right order, assuming the headers are received first.
This can mean that the first block file is flushed with block at height 249 and block at height 248 is added to the second file. In the log it looks like: `Leaving block file 0: CBlockFileInfo(blocks=249, size=65319, heights=0...249, time=2011-02-02...2024-12-03) (onto 1) (height 248)`. The test assumes that the height of the last pruned block in the first file is 248, expecting it to look like: `Leaving block file 0: CBlockFileInfo(blocks=249, size=65319, heights=0...248, time=2011-02-02...2024-12-09) (onto 1) (height 249) `.
Fix the issue by using a linear dumb sync.
ACKs for top commit:
achow101:
ACK fa0998f0a0
mzumsande:
Code Review ACK fa0998f0a0
i-am-yuvi:
Code Review ACK fa0998f0a0
fjahr:
Code review ACK fa0998f0a0
Tree-SHA512: 59cb4317be6cf9012c9bf7a3e9f5ba96b8b114b30bd2ac42af4fe742cd26a634d685b075f04a84bd782b2a43a342d75bb20a042bd82ad2831dbf844d39517ca2
fa6e599cf9 test: Call generate through test framework only (MarcoFalke)
Pull request description:
The generate RPCs are special in that they should only be called by the test framework itself. This way, they will call the sync function on the nodes, which can avoid intermittent test issues. Also, when the sync is disabled, it will happen explicitly by setting the `sync_fun`.
Apply this rule here, so that all generate calls are written consistently.
ACKs for top commit:
achow101:
ACK fa6e599cf9
rkrux:
tACK fa6e599cf9
hodlinator:
ACK fa6e599cf9
i-am-yuvi:
Tested ACK fa6e599cf9
Tree-SHA512: 31079997f1e17031ecd577904457e0560388aa53cadb1bbda281865271e8e4cf244bc6bf315838a717bf9d6620c201093e30039aa0007bec3629f7ca56abfba3
a2c45ae548 test: report failure during utf8 response decoding (furszy)
Pull request description:
Useful for debugging issues such https://github.com/bitcoin/bitcoin/pull/31241#issuecomment-2462816933.
Prints the entire response content instead of printing only the position of the byte it can't be decoded.
The diff between the error messages can be seen by running the `wallet_migration.py` functional test with the following patch applied:
```
diff --git a/src/wallet/rpc/wallet.cpp b/src/wallet/rpc/wallet.cpp
--- a/src/wallet/rpc/wallet.cpp(revision d65918c5da52c7d5035b4151dee9ffb2e94d4761)
+++ b/src/wallet/rpc/wallet.cpp(date 1731005254673)
@@ -801,7 +801,7 @@
}
UniValue r{UniValue::VOBJ};
- r.pushKV("wallet_name", res->wallet_name);
+ r.pushKV("wallet_name", "\xc3\x28");
if (res->watchonly_wallet) {
r.pushKV("watchonly_name", res->watchonly_wallet->GetName());
}
```
ACKs for top commit:
achow101:
ACK a2c45ae548
theStack:
re-ACK a2c45ae548
rkrux:
tACK a2c45ae548
ismaelsadeeq:
utACK a2c45ae548
Tree-SHA512: 6abb524b5a215c51ec881eea91ebe8174140a88ff3874c8c88676157edae7818801356586a904dbb21b45053183315a6d71dbf917d753611d8e413776b57c484
ecaa786cc1 rpc: add signet_challenge field to getblockchaininfo and getmininginfo (Ash Manning)
Pull request description:
Signet challenges are currently only available via `getblocktemplate` RPC.
`getblockchaininfo` and `getmininginfo` both provide inadequate information to distinguish signets. Since these are the RPCs used to determine the current network, they should also provide the signet challenge for signets.
Test coverage is included in `test/functional/feature_signet.py`.
ACKs for top commit:
sipa:
utACK ecaa786cc1
achow101:
ACK ecaa786cc1
i-am-yuvi:
Concept ACK ecaa786cc1
Sjors:
ACK ecaa786cc1
zaidmstrr:
Tested ACK [ecaa786](ecaa786cc1)
Tree-SHA512: 9ccf4ae634ee74353a2a895efb881fdc62ae703a134ccd219da2cd6080c7d38319e689054584722457a7cc79004bd6022292a3b0b90eaab9f7003564665e1ea4
06443b8f28 net: clarify if we ever sent or received from peer (Sjors Provoost)
1d01ad4d73 net: add LogIP() helper, use in net_processing (Sjors Provoost)
937ef9eb40 net_processing: use CNode::DisconnectMsg helper (Sjors Provoost)
ad224429f8 net: additional disconnection logging (Sjors Provoost)
Pull request description:
While debugging unexpected disconnections, possibly related to #28331, I found some additional [net] logging to be useful.
All cases where we disconnect now come with a log message that has the word `disconnecting`:
* all calls to `CloseSocketDisconnect()` log `disconnecting peer=…`
* wherever we set `pnode->fDisconnect = true;`
* for all `InactivityCheck` cases (which in turn sets `fDisconnect`)
* replaces "dropping" with "disconnecting" in `Network not active, dropping peer=…`
A few exceptions are listed here: https://github.com/bitcoin/bitcoin/pull/28521#discussion_r1890824361
I changed `CloseSocketDisconnect()` to no longer log `disconnecting`, and instead have all the call sites do so.
This PR introduces two helper functions on `CNode`: `DisconnectMsg` and `LogIP`. The second and third commit use these helpers in `net_processing.cpp` so these disconnect messages are more consistent now (e.g. some didn't log the IP). No new messages are added there though.
The `LogIP()` helper is rarely used outside of a disconnect event, but it's available for future use.
Any `LogPrint` this PR touches is replaced with `LogDebug` (superseded by #30750), and every `LogPrintf ` with `LogInfo`.
ACKs for top commit:
davidgumberg:
reACK 06443b8f28
vasild:
ACK 06443b8f28
danielabrozzoni:
ACK 06443b8f28
hodlinator:
ACK 06443b8f28
Tree-SHA512: 525f4c11568616e1d48455a3fcab9e923da7432377fe9230468c15403d2e9b7ce712112df8fbd547cfec01dce0d1f26107cfc1b90f78cfc1fe13e08d57b08464
1dd3af8fbc Add release note for #31223 (Martin Zumsande)
997757dd2b test: add functional test for -port behavior (Martin Zumsande)
0e2b12b92a net, init: derive default onion port if a user specified a -port (Martin Zumsande)
Pull request description:
This resolves#31133 (setups with multiple local nodes each using a different `-port` no longer working with v28.0, see the issue description for more details) by deriving the default onion listening port to be the value specified by `-port` incremented by 1 (idea by vasild / laanwj).
Note that with this fix, the chosen `-port` values of two local nodes cannot be adjacent, otherwise there will be port collisions again.
From the discussion in the linked issue, this was the most popular option, followed by doing nothing and telling affected users to change their setups to use `-bind` instead of `-port`. But more opinions are certainly welcome!
I think that if we decide to do something about the problem described in the issue, we should do so soon (in 28.1.), so I opened this PR.
Fixes#31133
ACKs for top commit:
achow101:
ACK 1dd3af8fbc
laanwj:
Tested ACK 1dd3af8fbc
tdb3:
Code review ACK 1dd3af8fbc
Tree-SHA512: 37fda2b23bbedcab5df3a401cf5afce66ae5318fb78f9660f83e3fd075b528e8156d7a0903f9a12ffe97ab5d83860587116b74af28670a1f4c2f0d1be4999f40
62b2d23edb wallet: Migrate non-HD keys to combo() descriptor (Ava Chow)
Pull request description:
Non-HD keys do not have an HD seed ID associated with them, so if this value is the null value (all 0s), then we should not perform any seed ID comparison that would result in excluding the keys from combo() migration.
This changes the migration of non-HD wallets (or blank wallets with imported private keys) to make a single combo() descriptors for the non-HD/imported keys, rather than pk(), pkh(), sh(wpkh()), and wpkh() descriptors for the keys.
Implements https://github.com/bitcoin/bitcoin/pull/31374#discussion_r1876650074
ACKs for top commit:
laanwj:
Concept and code review ACK 62b2d23edb
brunoerg:
code review ACK 62b2d23edb
furszy:
Nice catch. ACK 62b2d23edb
theStack:
ACK 62b2d23edb
rkrux:
tACK 62b2d23edb
Tree-SHA512: 86a80b7dcc1598ab18068a2572ff4b4920b233178b760f7b76c5b21a9e6608005ac872f90e082a8f99b51daab0b049e73e4bee5b8e0b537d56ed0d34122a1f49
988721d37a test: avoid internet traffic in rpc_net.py (Sebastian Falbesoner)
Pull request description:
In order to avoid connecting to the internet in the functional test `rpc_net.py`, specify a non-working proxy (parameter `-proxy=127.0.0.1:1`, same approach as in #31142) for the nodes. There is at least one known instance where this is currently happening on master where a connection attempt to a public IP is made (see also the discussion in #31339):
17834bd197/test/functional/rpc_net.py (L253)
Can be tested by running
```
$ sudo tcpdump -i eth0 host 11.22.33.44
```
both on master and the PR branch and verifying that no packets appear in the tcpdump in the latter anymore.
ACKs for top commit:
achow101:
ACK 988721d37a
tdb3:
ACK 988721d37a
vasild:
ACK 988721d37a
Tree-SHA512: 0f51fedccbfac0f80a7e6f9c5ba9193d0c20b5a788553c7cd7e583225df7b1151b86cd848d6ccf61f7b2de848f0ac98d73d7b5db100aa54fe8cbeeb4c0549106
ec777917d6 test: Fix intermittent issue in wallet_backwards_compatibility.py (Randall Naar)
Pull request description:
When creating and replacing a transaction using `bumpfee`, an async update is sent in the form of the `TransactionAddedToMempool` and `TransactionRemovedFromMempool` signals. When `wallet_backwards_compatibility.py` creates `tx3_id` this way and replaces it with `tx4_id`, the `abandontransaction` rpc is called right after. In some cases the `TransactionAddedToMempool` and `TransactionRemovedFromMempool` is handled after the transaction is abandoned in the wallet, and overwrites the transaction's `abandoned` flag. This PR forces the signals to get handled before `abandontransaction` is called by invoking `self.sync_mempools` which calls `syncwithvalidationinterfacequeue` on every node's rpc connection.
This will mitigate the immediate inconsistency observed with the abandontransaction call, but the potential race conditions between the signals and wallet operations may also be useful to note in a separate issue (if it's okay to not address it in this one).
Fixes#29806
ACKs for top commit:
achow101:
ACK ec777917d6
tdb3:
ACK ec777917d6
Tree-SHA512: e75bc2c1f7fefc4f4910bb353654848fed5661c1436416798a5f4e0c5a76bde15617a5af04c2384464005953326317b8f273039e47508d5124677908cf36d31e
Non-HD keys in legacy wallets without a HD seed ID were being migrated
to separate pk(), pkh(), sh(wpkh()), and wpkh() descriptors for each key.
These could be more compactly represented as combo() descriptors, so
migration should make combo() for them.
It is possible that existing non-HD wallets that were migrated, or
wallets that started blank and had private keys imported into them have
run into this issue. However, as the 4 descriptors produce the same output
scripts as the single combo(), so any previously migrated wallets are
not missing any output scripts. The only observable difference should be
performance related, and the wallet size on disk.
cdd207c0e4 test: add coverage for migrating standalone imported keys (furszy)
297a876c98 test: add coverage for migrating watch-only script (furszy)
932cd1e92b wallet: fix crash during watch-only wallet migration (furszy)
Pull request description:
The crash occurs because we assume the cached scripts structure will not be empty,
but it can be empty for watch-only wallets that start blank.
This also adds test coverage for standalone imported keys, which were also crashing
because pubkey imports are treated the same way as hex script imports through
`importaddress()`.
Testing Notes:
This can be verified by cherry-picking and running any of the test commits on master.
It will crash there but pass on this branch.
ACKs for top commit:
theStack:
re-ACK cdd207c0e4
brunoerg:
reACK cdd207c0e4
achow101:
ACK cdd207c0e4
Tree-SHA512: e05c77cf3e9f35f10f122a73680b3f131f683c56685c1e26b5ffc857f95195b64c8c9d4535960ed3d6f931935aa79b0b1242537462006126bdb68251f0452954
7239ddb7ce test: make sure node has all transactions (brunoerg)
ee1b9bef00 test: replace `is not` to `!=` when comparing block hash (brunoerg)
Pull request description:
`test_invalid_tx_in_compactblock` tests that we don't get disconnected if we relay a compact block with valid header, but invalid transactions.
In this test, after sending the block with invalid transactions, this test checks two things: the tip in the receiver node did not advance and the sender did not get disconnected. However, even if the block contains only valid transactions, the tip would not advance because the receiver does not have all transactions to reconstruct the valid and would request them back. This PR fixes it by sending all the transactions.
Also, comparing block hash (int) using `is not` can lead to subtle bugs, this PR fixes it by replacing it to `!=`.
--------------
Can be tested by applying:
```diff
diff --git a/test/functional/p2p_compactblocks.py b/test/functional/p2p_compactblocks.py
index 274ef9532c..419153a32f 100755
--- a/test/functional/p2p_compactblocks.py
+++ b/test/functional/p2p_compactblocks.py
@@ -723,11 +723,8 @@ class CompactBlocksTest(BitcoinTestFramework):
utxo = self.utxos[0]
block = self.build_block_with_transactions(node, utxo, 5)
- del block.vtx[3]
block.hashMerkleRoot = block.calc_merkle_root()
# Drop the coinbase witness but include the witness commitment.
- add_witness_commitment(block)
- block.vtx[0].wit.vtxinwit = []
block.solve()
# Make sure node has the transactions to reconstruct the block
```
ACKs for top commit:
instagibbs:
ACK 7239ddb7ce
glozow:
ACK 7239ddb7ce
lucasbalieiro:
Tested ACK for commit [7239ddb](7239ddb7ce)
Tree-SHA512: 6d04fb7c50b5e635c83ede75c12130cbd8e1b229887a86a2e1bfe747e4208731faecc7265cae063c1ace187b20c5f37080d5116760766fa2948f38971e5f6fbf
fae76393bd test: Avoid F541 (f-string without any placeholders) (MarcoFalke)
Pull request description:
An extra `f` string-prefix is mostly harmless, but could be confusing or hint to a mistake where a format argument was forgotten.
Try to avoid the confusion and mistakes by applying the `F541` linter rule.
ACKs for top commit:
lucasbalieiro:
**Tested ACK** [fae7639](fae76393bd)
danielabrozzoni:
ACK fae76393bd
tdb3:
Code review ACK fae76393bd
Tree-SHA512: 4992a74fcf0c19b32e4d95f7333e087b4269b5c5259c556789fb86721617db81c7a4fe210ae136c92824976f07f71ad0f374655e7008b1967c02c73324862d9a
55347a5018 test: Rework migratewallet to use previous release (v28.0) (Ava Chow)
f42ec0f3bf wallet: Check specified wallet exists before migration (Ava Chow)
Pull request description:
This PR reworks wallet_migration.py to use previous releases to produce legacy wallets for testing so that the test will continue to work once legacy wallets are removed.
Split from #28710
ACKs for top commit:
maflcko:
re-ACK 55347a5018🥊
rkrux:
re-ACK 55347a5
Tree-SHA512: f90a2f475febc73d29e8ad3cb20d134c368a40a3b5934c3e4aaa77ae704af6314d4dd2e85c261142bd60a201902ac4ba00b8e2443d3cef7c8cc45d23281fa831
cccca8a77f test: Avoid logging error when logging error (MarcoFalke)
Pull request description:
Currently a logging error in the form of `--- Logging error ---` happens when an error is logged in the `_on_data` helper.
Fix it by properly logging the error.
Also, treat pylint errors as errors, to avoid this problem in the future.
Can be tested by running `p2p_addrv2_relay.py` with the following example diff:
```diff
diff --git a/test/functional/test_framework/p2p.py b/test/functional/test_framework/p2p.py
index 523e1bd068..0f1eb29d13 100755
--- a/test/functional/test_framework/p2p.py
+++ b/test/functional/test_framework/p2p.py
@@ -137,7 +137,7 @@ MESSAGEMAP = {
b"notfound": msg_notfound,
b"ping": msg_ping,
b"pong": msg_pong,
- b"sendaddrv2": msg_sendaddrv2,
+ #b"sendaddrv2": msg_sendaddrv2,
b"sendcmpct": msg_sendcmpct,
b"sendheaders": msg_sendheaders,
b"sendtxrcncl": msg_sendtxrcncl,
ACKs for top commit:
fanquake:
ACK cccca8a77f
Tree-SHA512: dd19f3feed0093246cb205903529fb9ebd5ad9a6c9330cfc5987c0154253c9dcec8d0e25ff99e4ac806a464ff58c3787a205378b8dfb7a1a521da25eac429136
0f84cdd266 func: test orphan parent is re-requested from 2nd peer (Greg Sanders)
Pull request description:
Small test which I couldn't find coverage for.
ACKs for top commit:
glozow:
lgtm ACK 0f84cdd266
tdb3:
code review ACK 0f84cdd266
theStack:
ACK 0f84cdd266
marcofleon:
tACK 0f84cdd266. Removing `node.bumpmocktime(GETDATA_TX_INTERVAL)` results in failure.
Tree-SHA512: fe8cb9d56aabc8f2ef1f49b6cd4e87e28a51ada8070c698f60c5fd945a28d849f0c5793f2e3e29f013e610168b860e0bf1c0aa010eec5b339688269d2b9e69af
95a0104f2e test: Add tests for directories in place of config files (Hodlinator)
e85abe92c7 args: Catch directories in place of config files (Hodlinator)
e4b6b1822c test: Add tests for -noconf (Hodlinator)
483f0dacc4 args: Properly support -noconf (Hodlinator)
312ec64cc0 test refactor: feature_config_args.py - Stop nodes at the end of tests, not at the beginning (Hodlinator)
7402658bc2 test: -norpccookiefile (Hodlinator)
39cbd4f37c args: Support -norpccookiefile for bitcoind and bitcoin-cli (Hodlinator)
e82ad88452 logs: Use correct path and more appropriate macros in cookie-related code (Hodlinator)
6e28c76907 test: Harden testing of cookie file existence (Hodlinator)
75bacabb55 test: combine_logs.py - Output debug.log paths on error (Hodlinator)
bffd92f00f args: Support -nopid (Hodlinator)
12f8d848fd args: Disallow -nodatadir (Hodlinator)
6ff9662760 scripted-diff: Avoid printing version information for -noversion (Hodlinator)
e8a2054edc doc args: Document narrow scope of -color (Hodlinator)
Pull request description:
- Document `-color` as only applying to `-getinfo`, to be less confusing for bitcoin-cli users.
- No longer print version information when getting passed `-noversion`.
- Disallow `-nodatadir` as we cannot run without one. It was previously interpreted as a mix of unset and as a relative path of "0".
- Support `-norpccookiefile`
- Support `-nopid`
- Properly support `-noconf` (instead of working by accident). Also detect when directories are specified instead of files.
Prompted by investigation in https://github.com/bitcoin/bitcoin/pull/16545#pullrequestreview-2316714013.
ACKs for top commit:
l0rinc:
utACK 95a0104f2e
achow101:
ACK 95a0104f2e
ryanofsky:
Code review ACK 95a0104f2e. Looks good! Thanks for all your work on this breaking the changes down and making them simple.
Tree-SHA512: 5174251e6b9196a9c6d135eddcb94130295c551bcfccc78e633d9e118ff91523b1be0d72828fb49603ceae312e6e1f8ee2651c6a2b9e0f195603a73a9a622785
32fc59796f rpc: Allow single transaction through submitpackage (glozow)
Pull request description:
There's no particular reason to restrict single transaction submissions with submitpackage. This change relaxes the RPC checks as enables the `AcceptPackage` flow to accept packages of a single transaction.
Resolves#31085
ACKs for top commit:
naumenkogs:
ACK 32fc59796f
achow101:
ACK 32fc59796f
glozow:
ACK 32fc59796f
Tree-SHA512: ffed353bfdca610ffcfd53b40b76da05ffc26df6bac4b0421492e067bede930380e03399d2e2d1d17f0e88fb91cd8eb376e3aabebbabcc724590bf068d09807c
73db95c65c kernel: Make bitcoin-chainstate's block validation mirror submitblock's (TheCharlatan)
bb53ce9bda tests: Add functional test for submitting a previously pruned block (Greg Sanders)
1f7fc73825 rpc: Remove submitblock duplicate pre-check (TheCharlatan)
e62a8abd7d rpc: Remove submitblock invalid-duplicate precheck (TheCharlatan)
36dbebafb9 rpc: Remove submitblock coinbase pre-check (TheCharlatan)
Pull request description:
With the introduction of a mining ipc interface and the potential future introduction of a kernel library API it becomes increasingly important to offer common behaviour between them. An example of this is ProcessNewBlock, which is used by ipc, rpc, net_processing and (potentially) the kernel library. Having divergent behaviour on suggested pre-checks and checks for these functions is confusing to both developers and users and is a maintenance burden.
The rpc interface for ProcessNewBlock (submitblock) currently pre-checks if the block has a coinbase transaction and whether it has been processed before. While the current example binary for how to use the kernel library, bitcoin-chainstate, imitates these checks, the other interfaces do not.
The coinbase check is repeated again early during ProcessNewBlock. Pre-checking it may also shadow more fundamental problems with a block. In most cases the block header is checked first, before validating the transactions. Checking the coinbase first therefore masks potential issues with the header. Fix this by removing the pre-check.
Similary the duplicate checks are repeated early in the contextual checks of ProcessNewBlock. If duplicate blocks are detected much of their validation is skipped. Depending on the constitution of the block, validating the merkle root of the block is part of the more intensive workload when validating a block. This could be an argument for moving the pre-checks into block processing. In net_processing this would have a smaller effect however, since the block mutation check, which also validates the merkle root, is done before.
Testing spamming a node with valid, but duplicate unrequested blocks seems to exhaust a CPU thread, but does not seem to significantly impact keeping up with the tip. The benefits of adding these checks to net_processing are questionable, especially since there are other ways to trigger the more CPU-intensive checks without submitting a duplicate block. Since these DOS concerns apply even less to the RPC interface, which does not have banning mechanics built in, remove them too.
Finally, also remove the pre-checks from `bitcoin-chainstate.cpp`.
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This PR is part of the [libbitcoinkernel project](https://github.com/bitcoin/bitcoin/issues/27587).
ACKs for top commit:
Sjors:
re-utACK 73db95c65c
achow101:
ACK 73db95c65c
instagibbs:
ACK 73db95c65c
mzumsande:
ACK 73db95c65c
Tree-SHA512: 2d02e851cf402ecf6a1968c058df3576aac407e200cbf922a1a6391b7f97b4f42c6d9f6b0a78b9d1af0a6d40bdd529a7b11a1e6d88885bd7b8b090f6d1411861
This ensures we don't needlessly start the node, and reduces implicit dependencies between test functions.
test_seed_peers() - Move assert calling RPC to verify correct chain after our own function actually started the node.
