fix(net): reject response errors in QGETDATA requests - #7605
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No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: Repository UI Review profile: CHILL Plan: Pro Plus Run ID: 📒 Files selected for processing (1)
WalkthroughQGETDATA processing now checks payload size before deserialization and assigns a 100-point misbehavior score to oversized payloads. The functional message supports an optional requester-supplied error byte without changing the default wire format. A functional test verifies disconnection for requester-supplied error values. Estimated code review effort: 3 (Moderate) | ~20 minutes Mergeability Score: ⚪ Minimal · up to The PR rejects malformed QGETDATA requests containing response-only error data and adds functional coverage for peer disconnection; no actionable merge-blocking risk remains. Possibly related PRs
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Inline comments:
In `@test/functional/p2p_quorum_data.py`:
- Around line 379-391: Add fresh-peer test cases alongside
test_qgetdata_rejects_requester_error for QGETDATA messages with error=0 and
error=0xFF, using the same setup, send, disconnect assertion, and cleanup;
verify both explicitly decoded special values disconnect the peer.
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src/llmq/net_quorum.cpptest/functional/p2p_quorum_data.pytest/functional/test_framework/messages.py
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Final validation — Codex/Sol only (Phase 2 disabled)
The fixed-size payload gate correctly rejects every response-only or trailing byte before deserialization and applies the intended misbehavior score. The functional test covers the original nonzero-error exploit, but it does not verify the presence-based behavior promised for the two special decoded values.
Source: reviewer backend model: gpt-5.6-sol; final verifier backend model: gpt-5.6-sol. Orchestration-only: openclaw-agent/cliproxy/gpt-5.6-sol (not reviewer evidence).
Validated zero-blocker Codex/Sol precheck evidence was promoted to final because Phase 2 (Sonnet/Opus) is temporarily disabled. This is Codex/Sol-only final validation, not Codex + Sonnet/Opus coverage.
Review provenance
- Codex reviewers:
gpt-5.6-sol— general (completed) - Verifier:
gpt-5.6-sol— verifier - Sonnet/Opus: not run (Phase 2 disabled — temporary Codex/Sol-only final)
- Secondary pass: disabled (
temporary_phase2_sonnet_disable)
🟡 1 suggestion(s)
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These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `test/functional/p2p_quorum_data.py`:
- [SUGGESTION] test/functional/p2p_quorum_data.py:383-390: Exercise presence-based rejection for both special error bytes
The PR explicitly requires rejection based on field presence, including serialized `NONE` (`0x00`) and `UNDEFINED` (`0xFF`), but the test sends only `ENCRYPTED_CONTRIBUTIONS_MISSING`. It would therefore pass with a weaker value-based check that rejects ordinary nonzero errors while accepting one or both special values. Exercise both boundary values on fresh peers, while retaining the existing nonzero case, so the regression test distinguishes the size-based implementation from every decoded-value gate.
| p2p_mn = p2p_connection(mn2.get_node(self)) | ||
| id_p2p_mn = get_p2p_id(mn2.get_node(self)) | ||
| mnauth(mn2.get_node(self), id_p2p_mn, fake_mnauth_2[0], fake_mnauth_2[1]) | ||
| wait_for_banscore(mn2.get_node(self), id_p2p_mn, 0) | ||
| poisoned = msg_qgetdata(quorum_hash_int, 100, 0x01, error=ENCRYPTED_CONTRIBUTIONS_MISSING) | ||
| p2p_mn.send_message(poisoned) | ||
| self.wait_until(lambda: not p2p_mn.is_connected, timeout=10) | ||
| mn2.get_node(self).disconnect_p2ps() |
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🟡 Suggestion: Exercise presence-based rejection for both special error bytes
The PR explicitly requires rejection based on field presence, including serialized NONE (0x00) and UNDEFINED (0xFF), but the test sends only ENCRYPTED_CONTRIBUTIONS_MISSING. It would therefore pass with a weaker value-based check that rejects ordinary nonzero errors while accepting one or both special values. Exercise both boundary values on fresh peers, while retaining the existing nonzero case, so the regression test distinguishes the size-based implementation from every decoded-value gate.
| p2p_mn = p2p_connection(mn2.get_node(self)) | |
| id_p2p_mn = get_p2p_id(mn2.get_node(self)) | |
| mnauth(mn2.get_node(self), id_p2p_mn, fake_mnauth_2[0], fake_mnauth_2[1]) | |
| wait_for_banscore(mn2.get_node(self), id_p2p_mn, 0) | |
| poisoned = msg_qgetdata(quorum_hash_int, 100, 0x01, error=ENCRYPTED_CONTRIBUTIONS_MISSING) | |
| p2p_mn.send_message(poisoned) | |
| self.wait_until(lambda: not p2p_mn.is_connected, timeout=10) | |
| mn2.get_node(self).disconnect_p2ps() | |
| for error in (0, 0xFF, ENCRYPTED_CONTRIBUTIONS_MISSING): | |
| p2p_mn = p2p_connection(mn2.get_node(self)) | |
| id_p2p_mn = get_p2p_id(mn2.get_node(self)) | |
| mnauth(mn2.get_node(self), id_p2p_mn, fake_mnauth_2[0], fake_mnauth_2[1]) | |
| wait_for_banscore(mn2.get_node(self), id_p2p_mn, 0) | |
| poisoned = msg_qgetdata(quorum_hash_int, 100, 0x01, error=error) | |
| p2p_mn.send_message(poisoned) | |
| self.wait_until(lambda: not p2p_mn.is_connected, timeout=10) | |
| mn2.get_node(self).disconnect_p2ps() |
source: ['codex', 'coderabbit']
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Resolved in 1a32e0e — Exercise presence-based rejection for both special error bytes no longer present.
Auto-resolved by the review system based on the latest commit diff. If you believe this was closed in error, reopen the thread.
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Final validation — Codex/Sol only (Phase 2 disabled)
The fixed-size QGETDATA payload check rejects response-only error fields and arbitrary trailing bytes before deserialization. The current functional test exercises the ordinary missing-data error plus explicit NONE (0x00) and UNDEFINED (0xFF) values on fresh connections, so the prior coverage finding is fixed and no in-scope issues remain.
Source: reviewer backend model: gpt-5.6-sol; final verifier backend model: gpt-5.6-sol. Orchestration-only: openclaw-agent/cliproxy/gpt-5.6-sol (not reviewer evidence).
Validated zero-blocker Codex/Sol precheck evidence was promoted to final because Phase 2 (Sonnet/Opus) is temporarily disabled. This is Codex/Sol-only final validation, not Codex + Sonnet/Opus coverage.
Review provenance
- Codex reviewers:
gpt-5.6-sol— general (completed) - Verifier:
gpt-5.6-sol— verifier - Sonnet/Opus: not run (Phase 2 disabled — temporary Codex/Sol-only final)
- Secondary pass: disabled (
temporary_phase2_sonnet_disable)
2 participants
Issue being fixed or feature implemented
CQuorumDataRequestreads an optional trailingnErrorbyte for QDATA responses, but the QGETDATA request handler also accepted that response-only field. A requester could select one of the missing-data errors that intentionally suppress repeated-request scoring while still forcing response work.This is the protocol-validation half split out of #7519 so it can be reviewed and merged independently from request-tracking bounds.
What was done?
NONE,UNDEFINED, and trailing bytes are rejected too.How Has This Been Tested?
make -j13build on macOS arm64 using the prebuilt depends tree./opt/homebrew/bin/python3.9 test/functional/test_runner.py p2p_quorum_data.pygit diff --checktest/lint/lint-python.pywas invoked but skipped becauseflake8is not installed in the local environment.Breaking Changes
None.
nErroron an inbound QGETDATA request was never meaningful.Checklist:
This pull request was created by Codex.