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71 lines
4.0 KiB
Markdown
71 lines
4.0 KiB
Markdown
# PKG-HLS-SDK-01: direct HTTP teardown diagnostic checkpoint
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Status remains doing. Baseline fe5534ac2429ac67702ca9d4121b4ab8603cb278.
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No production source, dependency, fixture, build output or acceptance assertion
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was changed. This checkpoint advances attribution, not completion.
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## Controls and results
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All five runs use frozen Hls.js1.5.17, Windows Firefox155.0, local ordinary HTTP,
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direct native video, no ArtPlayer/plugin, no route interception, no Worker
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observer and no SDK logger. Native worker output is not substituted. Browser
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process DEBUG logging is enabled and saved for every run. Existing trace capture
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and media/SDK event recording remain enabled, so these are not uninstrumented runs.
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| Run | Teardown | Worker | Extra pre-destroy snapshot | Pass | Fail |
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| --- | --- | --- | --- | --- | --- |
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| Original runner | reset first | yes | no | 9 | 1 |
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| Original runner control | reset first | no | no | 10 | 0 |
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| Phase/snapshot runner | reset first | yes | yes | 5 | 0 |
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| Final phase runner | reset first | yes | no | 4 | 1 |
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| Final phase runner | SDK first | yes | no | 3 | 2 |
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35 diagnostic iterations total:31 pass,4 fail. These are finite controls, not
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release-matrix passes or a claim about long-term failure probability. The no-worker
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control cannot substitute for required worker acceptance. Snapshot success may
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reflect changed timing; it is not evidence of a repair.
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The three failures in the final phase runner occur during final-state collection,
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after destroy and the immediate post-destroy state call returned. The first failure
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predates phase recording and cannot be assigned the same precise stage. Original
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errors, trace hashes and logs are retained separately from previous diagnostics.
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Both reset-first and SDK-first reproduce failures. Do not change the public core
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destroy order or callers' SDK configuration based on the previously passing
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SDK-first samples. No grouped-playback timeout occurred in these direct controls;
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the independent HLS-PLAYBACK-01 failure remains unclosed.
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## Browser evidence limits
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The installed Firefox1543 archive's TargetRegistry.js observes
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`oop-frameloader-crashed`, emits the target crash event and disposes that target.
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The logged stack reaches this observer. The source member hash and excerpt are
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recorded with the actual binary archive hash, not inferred from another release.
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This supports a browser out-of-process frame-loader crash notification; it is not
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a native stack, minidump or proof of the responsible decoder/worker/SDK component.
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The browser parent exits normally after explicit teardown. Its exit code0 does
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not negate page crashes. The SWGL framebuffer startup warning occurs in both the
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failing worker run and passing no-worker control, so it is not a root-cause claim.
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## Maintained diagnostic changes
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The runner now records host-side operation phases and the phase/time of crash
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events. Errors during final state, tracing or context close remain failures even
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after operation assertions passed. This introduces no page calls in default mode.
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`--capture-before-destroy` optionally saves media, SDK and event state to Node
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before destroying the page; it defaults off and is explicitly listed in reports.
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That extra evaluate may affect timing, which is why its passing control is kept
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separate. Existing7-second waits, retries, media, SDK and worker settings are intact.
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Script lint and the frozen SDK/worker archive check pass. Package source and all
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published build outputs remain unchanged, so no package rebuild is required.
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See [evidence](../baselines/hls-http-teardown-validation.json) for exact runner,
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SDK/media inputs, reports, traces and failure classification.
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## Next evidence
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HLS-CRASH-01 and HLS-PLAYBACK-01 remain open; task SDK-01 is not complete. Obtain
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native Firefox content-process crash diagnostics or a minimized MSE reproduction
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and independently investigate the grouped-stream stall. Continue other package
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tasks while keeping this gate visible. Reverting this checkpoint removes diagnostic
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phase/snapshot metadata only and restores no production behavior.
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