Phase 6.2: async outbound connect — eliminate 3s vCPU stall#78

Merged

dpsoft merged 10 commits intomainfrom

phase6.2-async-connect-rebased

May 6, 2026

Commits on May 6, 2026

docs: Phase 6.2 detailed TDD plan — async outbound connect
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chore: add socket2 dep for non-blocking connect
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feat(slirp): add TcpNatState::Connecting + guest_isn field
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test(network): pin tcp_connect_to_unreachable_does_not_block_other_flows (BROKEN_ON_PURPOSE)
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feat(slirp): non-blocking connect — Connecting state for in-flight handshakes
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feat(slirp): EPOLLOUT-driven async connect completion (relay_pending_connects)
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test(network): pin tcp_connect_async_eventual_rst_on_failure
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feat(slirp): CONNECT_TIMEOUT reaping for stuck Connecting flows
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bench(network): process_syn_during_pending_connects (Phase 6.2 baseline)
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fix(bench): drop unused Ipv4Address import; qualify the one use site
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