[huangminghuang]

Summary

Fixes the interrupted transaction recovery path that could leave a restarted producer stuck in LIB catchup after it had already reached the peer's known fork DB root.

Failure

Failure CI run: https://github.com/Wire-Network/wire-sysio/actions/runs/28244239953/job/83678838341

The failing job timed out in interrupt_trx_test.py after the producer was relaunched. During recovery, the restarted node could receive duplicate or already-present blocks at/above the peer's known fork DB root. Because those blocks were not newly applied, the old sync path did not emit the accepted-block transition that normally advances LIB catchup to head catchup. The node stayed in lib_catchup, kept handshaking/waiting, and the test never reached the recovered producer round.

Fix

• Add a sync_manager helper that completes LIB catchup when the local fork DB root already satisfies the known peer root.
• Cancel any outstanding sync wait before clearing the sync source so an old timer cannot later close a healthy peer.
• When this recovery path promotes to head catchup, request from the fork DB root instead of reusing a fork DB head id from the stale/poisoned transition.
• Assert the post-relaunch producer waits in interrupt_trx_test.py so the recovery failure is reported directly instead of silently hanging until the outer CI timeout.

Branch Base

This branch was rewritten to include only the delta from PR #356 to this fix, then replayed onto current origin/master. The PR now contains one commit, 5a4d34ecf1, and only these files:

• plugins/net_plugin/src/net_plugin.cpp
• tests/interrupt_trx_test.py

Review

A subagent review found the missing timer cancellation in the first version of the patch. That was fixed, then re-reviewed with no remaining findings.

Validation

• git diff --check origin/master...HEAD
• cmake --build build/codex-interrupt-trx --target net_plugin nodeop clio sys-util kiod sysio_testing_contracts_copy -- -j6
• timeout 600 python3 tests/interrupt_trx_test.py -v

Note: local validation used -DBUILD_OPP_BUNDLES=OFF because wire-protobuf-bundler is not installed on this machine.

[heifner]

Targeting the wrong branch or needs to be rebased.