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53 lines
2.1 KiB
Markdown
53 lines
2.1 KiB
Markdown
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# 2021-07-05
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For https://github.com/overleaf/issues/issues/4503#issuecomment-873961735
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#### Fork base
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Based on v2.2.228 (d7afb74a6e1980da5041f376e7a7c7caef5f42ea)
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#### Changes:
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- fix handling of fetch errors (9826c6eb1ecd501ac3eb1e9d9a98a3e6edde3fd0)
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- do not bundle NodeJS stream backend (6d118ec35e6e6f954938a485178748f1bb8bdd8a)
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#### Reproducing of artifacts
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- NodeJS v10.23.3 in docker
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- npm v6.14.11 in docker
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- `pdf.js$ npm ci`
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- `pdf.js$ npx gulp generic`
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- `pdf.js$ cp build/generic/build/pdf.* build/generic/LICENSE HERE/build`
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#### Testing
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PDF.JS does not properly handle network errors for range requests. Any of the initial probe request or following chunk requests can get the editor stuck.
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Once any of the requests has failed, the current pdf.js document is stuck and it's (loading) promise never resolves/rejects. This is in turn breaking the frontend cleanup ahead of switching the pdf. New successful compiles will get queued on top of the stuck promise.
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https://github.com/overleaf/web-internal/blob/9ed96cd93d3c4d3b23ff223c658ce80bc895484a/frontend/js/ide/pdfng/directives/pdfRenderer.js#L549-L552
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https://github.com/overleaf/web-internal/blob/9ed96cd93d3c4d3b23ff223c658ce80bc895484a/frontend/js/ide/pdfng/directives/pdfViewer.js#L46-L47
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Steps to reproduce:
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### old (and new) logs ui
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- set network speed to something very slow (the chrome dev-tools allow custom profiles, set 1kb/s up/down and 1s latency)
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- wait for the compile response to arrive (see new pending requests for log/pdf)
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- trigger a clear cache in another browser tab
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- resume fast network speed
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### new logs ui
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- open dropdown of (re-)compile button
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- set network speed to something very slow
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- wait for the compile response to arrive (see new pending requests for log/pdf)
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- click re-compile from scratch (which shifts over the stop compile open of the dropdown)
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- resume fast network speed
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Alternative reproduction steps involving hacking the ssl-proxy:
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- https://digital-science.slack.com/archives/C0216GDEG9L/p1625240302143900
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- https://digital-science.slack.com/archives/C0216GDEG9L/p1625238107141300
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