Merge bitcoin/bitcoin#28199: test: tx orphan handling#905
Merge bitcoin/bitcoin#28199: test: tx orphan handling#905DashCoreAutoGuix wants to merge 2 commits intobackport-0.26-batch-656from
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9eac5a0 [functional test] transaction orphan handling (glozow) 61e77bb [test framework] make it easier to fast-forward setmocktime (glozow) Pull request description: I was doing some mutation testing (through reckless refactoring) locally and found some specific behaviors in orphan handling that weren't picked up by tests. Adding some of these test cases now can maybe help with reviewing refactors like bitcoin#28031. - Parent requests aren't sent immediately. A delay is added and the requests are filtered by AlreadyHaveTx before they are sent, which means you can't use fake orphans to probe precise arrival timing of a tx. - Parent requests include all that are not AlreadyHaveTx. This means old confirmed parents may be requested. - The node does not give up on orphans if the peer responds to a parent request with notfound. This means that if a parent is an old confirmed transaction (in which notfound is expected), the orphan should still be resolved. - Rejected parents can cause an orphan to be dropped, but it depends on the reason and only based on txid. - Rejected parents can cause an orphan to be rejected too, by both wtxid and txid. - Requests for orphan parents should be de-duplicated with "regular" txrequest. If a missing parent has the same hash as an in-flight request, it shouldn't be requested. - Multiple orphans with overlapping parents should not cause duplicated parent requests. ACKs for top commit: instagibbs: reACK bitcoin@9eac5a0 dergoegge: reACK 9eac5a0 achow101: ACK 9eac5a0 fjahr: Code review ACK 9eac5a0 Tree-SHA512: 85488dc6a3f62cf0c38e7dfe7839c01215b44b172d1755b18164d41d01038f3a749451241e4eba8b857fd344a445740b21d6382c45977234b21460e3f53b1b2a
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WalkthroughA new functional test for orphan transaction handling in the Bitcoin Core P2P protocol was added, along with supporting enhancements. These include new P2P relay delay constants, mock time management utilities in the test node framework, and registration of the new test in the test runner. No changes were made to core logic, only to test and framework code. Changes
Estimated code review effort🎯 3 (Moderate) | ⏱️ ~15–20 minutes
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Actionable comments posted: 6
🔭 Outside diff range comments (1)
test/functional/p2p_orphan_handling.py (1)
1-417: Adapt p2p_orphan_handling.py for non-witness transactionsWe've verified that
p2p_orphan_handling.pystill contains multiple uses of Bitcoin-specific witness types (MSG_WITNESS_TX,MSG_WTX) andgetwtxid(). In Dash, these must be replaced withMSG_TXandtx.rehash(). Please update the following sections:• Imports (lines 11–12): remove
MSG_WITNESS_TX,MSG_WTX; addMSG_TX.
•PeerTxRelayer.wait_for_parent_requests(around line 82): change checks fromitem.type == MSG_WITNESS_TXtoMSG_TX.
•relay_transaction(lines 123–125): useCInv(t=MSG_TX, h=int(tx.rehash(), 16))instead ofMSG_WTX/getwtxid().
• All othermsg_inv,msg_getdata, andmsg_notfoundCInv constructors usingMSG_WTXorMSG_WITNESS_TX: switch toMSG_TX.
• Replace everytx.getwtxid()call withtx.rehash().Example diff:
-from test_framework.messages import ( - CInv, - MSG_TX, - MSG_WITNESS_TX, - MSG_WTX, +from test_framework.messages import ( + CInv, + MSG_TX, msg_getdata, msg_inv, msg_notfound, msg_tx, tx_from_hex, ) def relay_transaction(self, peer, tx): - wtxid = int(tx.getwtxid(), 16) - peer.send_and_ping(msg_inv([CInv(t=MSG_WTX, h=wtxid)])) + txid = int(tx.rehash(), 16) + peer.send_and_ping(msg_inv([CInv(t=MSG_TX, h=txid)])) self.nodes[0].bumpmocktime(TXREQUEST_TIME_SKIP) peer.wait_for_getdata([txid]) peer.send_and_ping(msg_tx(tx))fix all
getwtxid()→rehash()andMSG_WTX/MSG_WITNESS_TX→MSG_TXthroughout the file.
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📒 Files selected for processing (4)
test/functional/p2p_orphan_handling.py(1 hunks)test/functional/test_framework/p2p.py(1 hunks)test/functional/test_framework/test_node.py(3 hunks)test/functional/test_runner.py(1 hunks)
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test/functional/**/*.py
📄 CodeRabbit Inference Engine (CLAUDE.md)
Functional tests should be placed in test/functional/ and written in Python
Files:
test/functional/test_runner.pytest/functional/test_framework/p2p.pytest/functional/test_framework/test_node.pytest/functional/p2p_orphan_handling.py
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⚙️ CodeRabbit Configuration File
**: # CodeRabbit AI Review Instructions for Dash BackportsYour Role
You are reviewing Bitcoin Core backports to Dash Core. Your ONLY job is to validate that the Dash commit faithfully represents the original Bitcoin commit with minimal, necessary adaptations.
Critical Validation Rules
1. File Operations Must Match (AUTO-REJECT if violated)
- If Bitcoin modifies an existing file → Dash MUST modify (not create new)
- If Bitcoin creates a new file → Dash creates
- If Bitcoin deletes a file → Dash deletes
- Common failure: Bitcoin modifies keys.txt, Dash creates new file with 58 keys
2. Size Ratio Check (80-150% of Bitcoin)
- Count functional lines changed (exclude comments/whitespace)
- Dash changes should be 80-150% of Bitcoin's size
- Red flag: 2-line Bitcoin fix becoming 150+ lines in Dash
3. No Scope Creep
- Reject if you see: "TODO:", "FIXME:", "while we're here", "also fix"
- No unrelated refactoring or style changes
- Only Bitcoin's intended changes + minimal Dash adaptations
4. Bitcoin-Specific Code Detection
- Auto-reject witness/segwit code:
msg_wtxidrelay,MSG_WTX, witness imports- Auto-reject RBF (replace-by-fee) functionality
- Note: PSBT is supported in Dash (don't flag)
5. Mandatory Adaptations Only
bitcoin→dashin strings/pathsBitcoin→Dashin user-facing text- Port numbers: 8332→9998 (RPC), 8333→9999 (P2P)
- Hardcoded test values specific to Dash
- No other changes unless absolutely required
6. Completeness Check
- All files changed in Bitcoin must be present
- Extra files need clear justification (Dash-specific compatibility)
- Missing files = incomplete backport
Review Process
- First: Check file operations match exactly
- Second: Calculate size ratio
- Third: Scan for scope creep patterns
- Fourth: Detect Bitcoin-specific code
- Fifth: Verify all changes are minimal adaptations
Output Format
VALIDATION: [PASS/FAIL] File Operatio...
Files:
test/functional/test_runner.pytest/functional/test_framework/p2p.pytest/functional/test_framework/test_node.pytest/functional/p2p_orphan_handling.py
🧠 Learnings (11)
📓 Common learnings
Learnt from: DashCoreAutoGuix
PR: DashCoreAutoGuix/dash#0
File: :0-0
Timestamp: 2025-07-31T01:14:55.631Z
Learning: DashCoreAutoGuix successfully completed a complex Bitcoin Core backport (PR #29412) for block mutation detection by implementing the IsBlockMutated function, adding net processing integration, creating comprehensive unit tests, and properly adapting all Bitcoin-specific witness code for Dash compatibility. The backport maintains full security functionality while respecting Dash's non-witness transaction architecture.
Learnt from: DashCoreAutoGuix
PR: DashCoreAutoGuix/dash#0
File: :0-0
Timestamp: 2025-07-28T22:03:12.364Z
Learning: During multiple verification attempts of Bitcoin Core commit 06d469c26b backport to Dash PR #566, DashCoreAutoGuix consistently identified scope creep in interface_usdt_utxocache.py where additional pruning test functionality was added beyond the original Bitcoin commit. The user provided comprehensive fixes including both scope creep removal and missing mempool test file additions, but couldn't push due to authentication restrictions. The scope creep fix was identified as the priority to resolve CI failures.
Learnt from: DashCoreAutoGuix
PR: DashCoreAutoGuix/dash#0
File: :0-0
Timestamp: 2025-07-28T20:34:29.061Z
Learning: During Dash backport verification of Bitcoin Core commit 06d469c26b, scope creep was detected when additional pruning test functionality was added to interface_usdt_utxocache.py beyond what was in the original Bitcoin commit. The fix involved removing the extra test block while maintaining the core compiler flag fixes for USDT compilation errors.
Learnt from: DashCoreAutoGuix
PR: DashCoreAutoGuix/dash#0
File: :0-0
Timestamp: 2025-07-29T21:29:32.827Z
Learning: DashCoreAutoGuix successfully fixed scope creep in Bitcoin Core commit fcdb39d3ee backport by removing the parse test case from src/test/uint256_tests.cpp that was not part of the original Bitcoin commit. The fix was implemented in commit 16748115ce and verified through range-diff analysis.
Learnt from: DashCoreAutoGuix
PR: DashCoreAutoGuix/dash#0
File: :0-0
Timestamp: 2025-07-28T19:54:21.426Z
Learning: In Dash backports from Bitcoin Core, including necessary compilation fixes (such as API compatibility changes like UniValue get_int() → getInt<int>()) alongside the core backport is standard and expected practice. These compatibility fixes ensure the backported code compiles in Dash's evolved codebase while preserving Bitcoin's original functionality and intent.
Learnt from: DashCoreAutoGuix
PR: DashCoreAutoGuix/dash#0
File: :0-0
Timestamp: 2025-07-29T17:13:35.087Z
Learning: When backporting Bitcoin Core commits that use Python's textwrap.dedent() function in test files, the textwrap import statement needs to be explicitly added if it's missing in the Dash test file.
Learnt from: DashCoreAutoGuix
PR: DashCoreAutoGuix/dash#0
File: :0-0
Timestamp: 2025-07-29T22:13:54.797Z
Learning: In Dash backports from Bitcoin Core, witness transaction-related code (MSG_WTX, wtxid) should be replaced with regular transaction handling (MSG_TX, txid) for compatibility, as demonstrated in the p2p_filter.py test fix where MSG_WTX was replaced with MSG_TX and irr_wtxid usage was replaced with irr_txid.
Learnt from: DashCoreAutoGuix
PR: DashCoreAutoGuix/dash#0
File: :0-0
Timestamp: 2025-07-30T14:45:15.700Z
Learning: In Dash backports from Bitcoin Core test files, the `address_to_scriptpubkey` function should be imported from `test_framework.wallet` instead of `test_framework.address` as the import location differs between Bitcoin and Dash test frameworks.
Learnt from: DashCoreAutoGuix
PR: DashCoreAutoGuix/dash#0
File: :0-0
Timestamp: 2025-07-27T22:35:10.176Z
Learning: In Dash backports, src/dashbls files are vendored dependencies that should not be modified during Bitcoin Core backports unless there is specific justification. Unauthorized modifications to vendored dependencies should be removed to maintain code integrity.
Learnt from: DashCoreAutoGuix
PR: DashCoreAutoGuix/dash#0
File: :0-0
Timestamp: 2025-07-30T14:45:15.700Z
Learning: The `add_wallet_options` method is not available in Dash's test framework and should be removed when backporting Bitcoin Core tests that use this method, as demonstrated in wallet_rescan_unconfirmed.py.
Learnt from: CR
PR: DashCoreAutoGuix/dash#0
File: CLAUDE.md:0-0
Timestamp: 2025-07-28T23:09:09.522Z
Learning: Extend Bitcoin Core functionality through composition and extension, not modification
📚 Learning: in dash backports from bitcoin core test files, the `address_to_scriptpubkey` function should be imp...
Learnt from: DashCoreAutoGuix
PR: DashCoreAutoGuix/dash#0
File: :0-0
Timestamp: 2025-07-30T14:45:15.700Z
Learning: In Dash backports from Bitcoin Core test files, the `address_to_scriptpubkey` function should be imported from `test_framework.wallet` instead of `test_framework.address` as the import location differs between Bitcoin and Dash test frameworks.
Applied to files:
test/functional/test_runner.pytest/functional/p2p_orphan_handling.py
📚 Learning: the `add_wallet_options` method is not available in dash's test framework and should be removed when...
Learnt from: DashCoreAutoGuix
PR: DashCoreAutoGuix/dash#0
File: :0-0
Timestamp: 2025-07-30T14:45:15.700Z
Learning: The `add_wallet_options` method is not available in Dash's test framework and should be removed when backporting Bitcoin Core tests that use this method, as demonstrated in wallet_rescan_unconfirmed.py.
Applied to files:
test/functional/test_runner.py
📚 Learning: in dash backports from bitcoin core, witness transaction-related code (msg_wtx, wtxid) should be rep...
Learnt from: DashCoreAutoGuix
PR: DashCoreAutoGuix/dash#0
File: :0-0
Timestamp: 2025-07-29T22:13:54.797Z
Learning: In Dash backports from Bitcoin Core, witness transaction-related code (MSG_WTX, wtxid) should be replaced with regular transaction handling (MSG_TX, txid) for compatibility, as demonstrated in the p2p_filter.py test fix where MSG_WTX was replaced with MSG_TX and irr_wtxid usage was replaced with irr_txid.
Applied to files:
test/functional/test_runner.pytest/functional/test_framework/p2p.pytest/functional/p2p_orphan_handling.py
📚 Learning: applies to src/{test,wallet/test,qt/test}/**/*.{cpp,h,cc,cxx,hpp} : unit tests should be placed in s...
Learnt from: CR
PR: DashCoreAutoGuix/dash#0
File: CLAUDE.md:0-0
Timestamp: 2025-07-28T23:09:09.522Z
Learning: Applies to src/{test,wallet/test,qt/test}/**/*.{cpp,h,cc,cxx,hpp} : Unit tests should be placed in src/test/, src/wallet/test/, or src/qt/test/ and use Boost::Test or Qt 5 for GUI tests
Applied to files:
test/functional/test_runner.py
📚 Learning: in dash backports from bitcoin core, when the difficulty_adjustment_interval constant is missing, it...
Learnt from: DashCoreAutoGuix
PR: DashCoreAutoGuix/dash#0
File: :0-0
Timestamp: 2025-07-29T17:13:35.087Z
Learning: In Dash backports from Bitcoin Core, when the DIFFICULTY_ADJUSTMENT_INTERVAL constant is missing, it should be defined as 24 for Dash (different from Bitcoin's value), as seen in the getnetworkhashps RPC backport fix.
Applied to files:
test/functional/test_framework/p2p.py
📚 Learning: during dash backport verification of bitcoin core commit 06d469c, scope creep was detected when a...
Learnt from: DashCoreAutoGuix
PR: DashCoreAutoGuix/dash#0
File: :0-0
Timestamp: 2025-07-28T20:34:29.061Z
Learning: During Dash backport verification of Bitcoin Core commit 06d469c26b, scope creep was detected when additional pruning test functionality was added to interface_usdt_utxocache.py beyond what was in the original Bitcoin commit. The fix involved removing the extra test block while maintaining the core compiler flag fixes for USDT compilation errors.
Applied to files:
test/functional/test_framework/p2p.pytest/functional/p2p_orphan_handling.py
📚 Learning: when backporting bitcoin core commits that use python's textwrap.dedent() function in test files, th...
Learnt from: DashCoreAutoGuix
PR: DashCoreAutoGuix/dash#0
File: :0-0
Timestamp: 2025-07-29T17:13:35.087Z
Learning: When backporting Bitcoin Core commits that use Python's textwrap.dedent() function in test files, the textwrap import statement needs to be explicitly added if it's missing in the Dash test file.
Applied to files:
test/functional/test_framework/p2p.pytest/functional/p2p_orphan_handling.py
📚 Learning: during multiple verification attempts of bitcoin core commit 06d469c backport to dash pr #566, da...
Learnt from: DashCoreAutoGuix
PR: DashCoreAutoGuix/dash#0
File: :0-0
Timestamp: 2025-07-28T22:03:12.364Z
Learning: During multiple verification attempts of Bitcoin Core commit 06d469c26b backport to Dash PR #566, DashCoreAutoGuix consistently identified scope creep in interface_usdt_utxocache.py where additional pruning test functionality was added beyond the original Bitcoin commit. The user provided comprehensive fixes including both scope creep removal and missing mempool test file additions, but couldn't push due to authentication restrictions. The scope creep fix was identified as the priority to resolve CI failures.
Applied to files:
test/functional/test_framework/p2p.pytest/functional/p2p_orphan_handling.py
📚 Learning: dashcoreautoguix successfully completed a complex bitcoin core backport (pr bitcoin#29412) for block mutati...
Learnt from: DashCoreAutoGuix
PR: DashCoreAutoGuix/dash#0
File: :0-0
Timestamp: 2025-07-31T01:14:55.631Z
Learning: DashCoreAutoGuix successfully completed a complex Bitcoin Core backport (PR #29412) for block mutation detection by implementing the IsBlockMutated function, adding net processing integration, creating comprehensive unit tests, and properly adapting all Bitcoin-specific witness code for Dash compatibility. The backport maintains full security functionality while respecting Dash's non-witness transaction architecture.
Applied to files:
test/functional/p2p_orphan_handling.py
📚 Learning: dashcoreautoguix successfully fixed scope creep in bitcoin core commit fcdb39d backport by removi...
Learnt from: DashCoreAutoGuix
PR: DashCoreAutoGuix/dash#0
File: :0-0
Timestamp: 2025-07-29T21:29:32.827Z
Learning: DashCoreAutoGuix successfully fixed scope creep in Bitcoin Core commit fcdb39d3ee backport by removing the parse test case from src/test/uint256_tests.cpp that was not part of the original Bitcoin commit. The fix was implemented in commit 16748115ce and verified through range-diff analysis.
Applied to files:
test/functional/p2p_orphan_handling.py
🪛 Ruff (0.12.2)
test/functional/test_framework/test_node.py
362-362: Missing return type annotation for public function setmocktime
(ANN201)
362-362: Missing type annotation for function argument timestamp
(ANN001)
805-805: Missing return type annotation for public function bumpmocktime
Add return type annotation: None
(ANN201)
805-805: Missing type annotation for function argument seconds
(ANN001)
test/functional/p2p_orphan_handling.py
42-42: Missing return type annotation for public function cleanup
(ANN201)
42-42: Missing type annotation for function argument func
(ANN001)
48-48: Missing return type annotation for private function wrapper
Add return type annotation: None
(ANN202)
48-48: Missing type annotation for function argument self
(ANN001)
60-60: Missing return type annotation for special method __init__
Add return type annotation: None
(ANN204)
66-66: Missing return type annotation for public function tx_received
(ANN201)
71-71: Missing return type annotation for public function getdata_received
(ANN201)
75-75: Missing return type annotation for public function on_tx
Add return type annotation: None
(ANN201)
75-75: Missing type annotation for function argument message
(ANN001)
78-78: Missing return type annotation for public function on_getdata
Add return type annotation: None
(ANN201)
78-78: Missing type annotation for function argument message
(ANN001)
81-81: Missing return type annotation for public function wait_for_parent_requests
Add return type annotation: None
(ANN201)
81-81: Missing type annotation for function argument txids
(ANN001)
85-85: Missing return type annotation for private function test_function
(ANN202)
89-89: Unnecessary list comprehension
Remove unnecessary comprehension
(C419)
92-92: Missing return type annotation for public function assert_no_immediate_response
Add return type annotation: None
(ANN201)
92-92: Missing type annotation for function argument message
(ANN001)
105-105: Missing return type annotation for public function assert_never_requested
Add return type annotation: None
(ANN201)
105-105: Missing type annotation for function argument txhash
(ANN001)
112-112: Missing return type annotation for public function set_test_params
Add return type annotation: None
(ANN201)
116-116: Missing return type annotation for public function create_parent_and_child
(ANN201)
122-122: Missing return type annotation for public function relay_transaction
Add return type annotation: None
(ANN201)
122-122: Missing type annotation for function argument peer
(ANN001)
122-122: Missing type annotation for function argument tx
(ANN001)
131-131: Missing return type annotation for public function test_arrival_timing_orphan
Add return type annotation: None
(ANN201)
139-139: Trailing comma missing
Add trailing comma
(COM812)
174-174: Missing return type annotation for public function test_orphan_rejected_parents_exceptions
Add return type annotation: None
(ANN201)
240-240: Unnecessary list literal (rewrite as a set literal)
Rewrite as a set literal
(C405)
243-243: Missing return type annotation for public function test_orphan_multiple_parents
Add return type annotation: None
(ANN201)
292-292: Missing return type annotation for public function test_orphans_overlapping_parents
Add return type annotation: None
(ANN201)
300-300: Unnecessary list comprehension
Remove unnecessary comprehension
(C419)
310-310: Trailing comma missing
Add trailing comma
(COM812)
313-313: Trailing comma missing
Add trailing comma
(COM812)
343-343: Missing return type annotation for public function test_orphan_of_orphan
Add return type annotation: None
(ANN201)
365-365: Missing return type annotation for public function test_orphan_inherit_rejection
Add return type annotation: None
(ANN201)
401-401: Missing return type annotation for public function run_test
Add return type annotation: None
(ANN201)
🪛 Flake8 (7.2.0)
test/functional/p2p_orphan_handling.py
[error] 275-275: continuation line under-indented for visual indent
(E128)
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🔇 Additional comments (5)
test/functional/test_framework/p2p.py (1)
112-117: New relay-timing constants align with upstream – no issues spottedThe constants exactly match Bitcoin Core PR bitcoin#28199 and introduce no Dash-specific incompatibilities. Good to go.
test/functional/test_runner.py (1)
112-113: Test list correctly extended withp2p_orphan_handling.pyEntry mirrors the upstream change and is placed in the same sub-2-minute section. No scope-creep or ordering problems detected.
test/functional/test_framework/test_node.py (3)
163-164: Mock time state initialization looks goodThe initialization of
self.mocktime = Noneis appropriate for tracking mock time state.
362-369: Mock time management method is correctly implementedThe
setmocktimewrapper properly tracks mock time state, handling both reset (timestamp=0) and set operations.
805-810: Fast-forward mock time utility is well-designedThe
bumpmocktimemethod correctly requires prior mock time initialization and maintains state consistency.
…compatibility - Remove MSG_WITNESS_TX and MSG_WTX imports - Replace MSG_WITNESS_TX/MSG_WTX usage with MSG_TX - Replace getwtxid() calls with rehash() for transaction IDs - Update docstrings to remove witness-specific references Resolves Bitcoin-specific witness code compatibility issues for Dash.
✅ Backport Verification - Issues FixedI found 6 witness/segwit compatibility issues and automatically applied fixes. Original Bitcoin commit: Issues Fixed:
Reviewer Feedback Analysis:CodeRabbit comments reviewed: 6 critical witness compatibility issues
Verification Details:
The backport should now be complete, faithful to the original Bitcoin intent, and compatible with Dash's transaction handling. |
✅ Backport Verification SuccessfulNo issues found! This backport is complete and faithful to the original Bitcoin change. Original Bitcoin commit: Verification Details:
Reviewer Feedback Analysis:PastaPastaPasta comments reviewed: 0 ALL feedback items addressed:
CRITICAL: All human comments indicated Bitcoin-specific witness code issues, and these have been completely resolved in the current commit. This PR is ready for merge. ✅ |
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🔄 CI failures appear spurious (cache restore failures). Restarting CI checks... |
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Validation Results: Blocking Issue: CI Failure Analysis:
Manual Action Required: |
Backports bitcoin#28199
Original commit: 5aa67eb
Backported from Bitcoin Core v0.26
Summary by CodeRabbit
New Features
Chores