Found a clean, reusable fault-injection technique: vote/PreVote
endpoints are TLS, and endpoint_connect() succeeds at the TCP level
independent of the handshake, so an accept-then-close impostor
listener on a peer's port deterministically causes an async
SSL_do_handshake failure post-connect -- landing in
vote_ep_err_handler/pre_vote_ep_err_handler (task 3.1's fix target),
never the already-fixed bug-1423 connect-refused path.
Independently reproduced by the reviewer from scratch: both a
RequestVote round and a PreVote round resolved via the fast
all-replied-no-quorum path in single-digit milliseconds, vs the
5000ms configured election timeout (confirmed firing later as a
no-op). Requirements 4.2, 4.3, 4.5 proven live, both vote kinds.
All 15 raft-adapter-conformance sub-tasks now complete. 1067 tests,
0 failures, 8 commits' worth of production fixes (config-push reply
integrity, vote/PreVote failure routing, dormant-sender
documentation), plus 6 regression-lock/confirmation/live-soak tasks.
Two residual gaps logged as new bugs during the sweep (bug-1483,
bug-1484), both pre-existing and out of this spec's scope.
Rongsong Shen
46bbdaa9a6