Phase 6.1: TCP half-close — fix silent data loss on shutdown(SHUT_WR)#73

Closed

dpsoft wants to merge 10 commits intoport-forward-listener-epollfrom

smoltcp-passt-port-phase6.1-half-close

Commits on May 4, 2026

perf(slirp): port-forward listener on EpollDispatch (50 ms → < 1 ms)
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docs: Phase 6.1 detailed TDD plan — TCP half-close
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test(network): pin tcp_half_close_guest_writes_first (BROKEN_ON_PURPOSE)
dpsoft
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feat(slirp): FinWait1 → LastAck and Established → CloseWait on host EOF
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test(network): pin tcp_half_close_host_writes_first
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feat(slirp): LAST_ACK_TIMEOUT reaping prevents LastAck entry leak
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test(network): pin tcp_last_ack_timeout_reaps_stale_entry (bench-helpers)
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refactor(slirp): drop allow(dead_code) on TcpNatState; remove unused FinWait2
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chore(slirp): Phase 6.1 validation gate — all gates green
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fix(slirp): drop duplicate bind + init flow_token in lastack helper
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committed