fix(jobs): de-flake webhook delivery on abrupt connection reset - #259
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`read_status` failed the delivery on any read error, so a server that sent its complete HTTP response and then closed abruptly — e.g. a Windows peer resetting the socket (os error 10053) right after `write_all` — surfaced as "failed to read webhook response" even though the status had already arrived. This flaked `webhook_http_post_uses_validated_socket_addr` on Windows CI. Parse whatever arrived when a read errors: if a terminated status line is already present the delivery succeeded, so return it; only propagate the error when no status was read. `parse_status_line` requires a line terminator so a truncated first line is never misread as a status. The test server now half-closes (`shutdown(Write)`) and drains before drop so the client reads the full response before the socket closes. Adds unit coverage for both the reset-after-response and reset-with-no- status paths. Co-Authored-By: Claude <noreply@anthropic.com>
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This was referenced Jul 3, 2026
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The webhook-reset fix (#259) landed test code that trips the workspace clippy denials: an unwrap_used in the reset-after-response test and a map_unwrap_or in the drain loop. Every PR's Clippy job now fails on master's code. Replace the unwrap with an explicit match/panic and the map/unwrap_or with is_ok_and. Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
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De-flake investigation
Mined the last ~12 failed CI runs across both workflows for recurring, test-level failures. Exactly three signatures recur — no others, and no test exceeds the 10s SLOW threshold (the suite is fast in aggregate, so there was no slow test to optimize):
os error 10053/ "failed to read webhook response" (Windows)broker_cancels_partial_refresh…initialize timed out(macOS)install-action: bash startup failure(Windows)The fix (root cause, product + test)
The webhook client's
read_statusfailed the whole delivery on any read error. A server that sent its complete HTTP response and then closed abruptly — e.g. a Windows peer resetting the socket (os error 10053) right afterwrite_all— surfaced asfailed to read webhook responseeven though the status line had already arrived. That's the flake, and it's also a real-world robustness gap: a healthy webhook that RSTs on close after a valid202would be treated as failed.read_statusnow parses what already arrived when a read errors: if a terminated status line is present the delivery succeeded, so return it; only propagate the error when no status was read.parse_status_linerequires a line terminator, so a truncated first line is never misread as a status code (the success path is otherwise byte-identical to before).shutdown(Write)) and drains before drop, so the client reads the full response before the socket closes — preventing the RST at the source too.202) and reset-with-no-status (→ error) paths.Local: webhook tests 20/20 stable on repeat; fmt/clippy clean (only pre-existing vendored
libsqlwarnings).Not included (deliberately)
install-actionbash-startup is a GitHub Windows runner-image bug (actions/partner-runner-images#169) in auses:step, not our code. There's no clean per-step retry for auses:step, and a hand-rolled Windows installer can't be validated locally — so it belongs in a separate, infra-focused change (pin/retry the runner) rather than a fragile edit here.sleeps that show no evidence of flaking — that would be churn against the repo'sretries = 0/flaky-result = "fail""surface flakes, don't mask them" policy.🤖 Generated with Claude Code