test(inttest): raw TCP destination e2e flavor (tcp-sink) - #111
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New lightweight lifecycle flavor `tcp-sink`: xtcp2 streams jsonl records over the raw `-dest tcp:...` destination to an in-VM ncat receiver, and the self-test's RAW_SOCKET check (5f) validates the received records ARE well-formed jsonl (non-empty hostname) AND the destTCP Writes counter is non-zero — send + receipt both proven. The tcp/udp/unix dests were Go-component-only before this; this is the first daemon-level e2e for the raw socket path. Dual-stack: xtcp2 dials `tcp:localhost:...` (resolves to 127.0.0.1 AND ::1) and the ncat sink listens on [::] (bindv6only=0 → also accepts IPv4-mapped), so either family works. No new Go tool needed — ncat (from nmap, already in the VM) + a file the self-test validates, reusing the OUTPUT_CONTENT jq idiom. Wiring: mkVm.nix (isTcpSink predicate, xtcp2TcpSinkArgs, the ncat sink service ordered before xtcp2, runRawSocketCheck), self-test.nix (Check 5f), default.nix (mkOneTcpSink/vmsTcpSink/lifecycleTcpSink), nix/default.nix (boot + lifecycle app/package). Run: nix run .#microvm-x86_64-lifecycle-tcp-sink. Verified: lifecycle microVM RAW_SOCKET_PASS (records=139, destTCP_Writes=15), OVERALL_PASS; nix-fmt green. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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What & why
New lightweight lifecycle flavor
tcp-sink: xtcp2 streams jsonl records over the raw-dest tcp:...destination to an in-VM ncat receiver, closing the last gap in the destination coverage plan. Thetcp/udp/unixdests were Go-component-only before this — this is the first daemon-level e2e for the raw socket path.Change
RAW_SOCKETcheck (self-test 5f): validates the received records are well-formed jsonl (non-emptyhostname) and thedestTCPWritescounter is non-zero — send + receipt both proven.tcp:localhost:…(resolves to127.0.0.1and::1) and the ncat sink listens on[::](bindv6only=0→ also accepts IPv4-mapped), so either family works.jqidiom); the existingtcp_serveris echo-only.Verification
nix-fmtgreen.RAW_SOCKET_PASS (records=139, destTCP_Writes=15),OVERALL_PASS.Run:
nix run .#microvm-x86_64-lifecycle-tcp-sink.Fourth and final PR of the coverage-expansion series (PR1 #108, PR2 #109, PR3 #110 merged). Straight off
main.🤖 Generated with Claude Code