---
id: "bug-1424"
status: "fixed"
status_updated: "2026-09-24"
status_note: ""
component: "controller"
severity: "unknown"
timestamp: "2026-07-09T17:00:00.000Z"
last_seen: "2026-09-19T09:00:00Z"
occurrences: 1
files: ["src/controller/ha.c"]
tags: ["ha", "raft", "prevote", "dead-peer", "latency"]
related: ["bug-1423"]
legacy: true
---

# bug-1424: PreVote twin of bug-1423: raft_cb_send_pre_vote_request's connect/monitor failure branches (a…

## Description
PreVote twin of bug-1423: raft_cb_send_pre_vote_request's connect/monitor failure branches (a dead/unreachable peer) never registered a reply with the raft library's PreVote tally, in EITHER test or production mode (worse than the real-vote path, which at least handled test mode).

## Environment
_Not recorded (migrated from buglog.json)._

## Reproduction
_Not recorded (migrated from buglog.json)._

## Root cause
Same missing-registration pattern as bug-1423, in raft_cb_send_pre_vote_request instead of raft_cb_send_vote_request. Found while auditing for the analogous gap after fixing bug-1423. Lower severity than bug-1423: PreVote has an unconditional round-timeout fallback (ha_prevote_round_timeout_fn, confirmed firing reliably every round across dozens of observed rounds in the bug-1423 investigation logs) that always resolves the round regardless of tally completeness, so this was never a permanent-deadlock class bug like bug-1423 was — just a latency waste: every PreVote round against a down peer burns the full round timeout instead of concluding as soon as the live peer(s) reply.

## Fix
Routed both failure branches through pre_vote_reply_dispatch(ha, c, peer_idx, granted=0) — the same production PreVote-reply path a real reply uses (raft_on_pre_vote_reply) — mirroring bug-1423's fix exactly. Added a forward declaration near the top of ha.c (pre_vote_reply_dispatch is defined much later in the file). Verified: full controller_unit_test suite clean (0 Fail, exit 0) after the change.

## Verification
_Not recorded (migrated from buglog.json)._

## References
- Related: bug-1423