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Fix: race-network-and-fetch-handler now uses actual |raceResponse| #1777

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Merged
merged 11 commits into from
Jun 13, 2025
Merged

Fix: race-network-and-fetch-handler now uses actual |raceResponse| #1777

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f2d5c72
add race-network-and-cache
monica-ch Apr 16, 2025
c39d796
update failure cases
monica-ch Apr 17, 2025
f206baf
Follow spec format
monica-ch Apr 20, 2025
7102987
use |raceResponse| when empty
monica-ch Apr 22, 2025
c9a9907
Remove race-network-and-cache source enum etc.
yoshisatoyanagisawa Jun 10, 2025
9a14512
Remove unnecessary change to the enum
yoshisatoyanagisawa Jun 10, 2025
8eec31a
Update docs/index.bs
yoshisatoyanagisawa Jun 11, 2025
c02659f
Assuming that the fetch event part always get queued
yoshisatoyanagisawa Jun 11, 2025
e2a3f08
Flag flip if |networkFetchResult| is set.
yoshisatoyanagisawa Jun 12, 2025
5006fff
Remove |networkFetchCompleted| and |networkFetchResult|
yoshisatoyanagisawa Jun 12, 2025
51832d8
No need to wait for |raceResponse|
yoshisatoyanagisawa Jun 12, 2025
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12 changes: 11 additions & 1 deletion docs/index.bs
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Original file line number Diff line number Diff line change
Expand Up @@ -3263,13 +3263,16 @@ spec: storage; urlPrefix: https://storage.spec.whatwg.org/
1. Let |queue| be an empty [=queue=] of [=race result=].
1. Let |raceFetchController| be null.
1. Let |raceResponse| be a [=race response=] whose [=race response/value=] is "<code>pending</code>".
1. Let |networkFetchCompleted| be false.
1. Let |fetchHandlerCompleted| be false.
1. Run the following substeps [=in parallel=], but [=abort when=] |fetchController|'s [=fetch controller/state=] is "<code>terminated</code>" or "<code>aborted</code>":
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The existing setup seems a bit fragile to me. The definition of abort when only operates between steps, and there are only two steps nested under "If aborted"... In fact there is only one step before this PR.

Probably there should be a check on fetchController's state inside the processResponse callback?

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I am not confident but I tried to address that with #1779.
Is it what you meant?

1. Set |raceFetchController| to the result of calling [=fetch=] given |request|, with [=fetch/processResponse=] set to the following steps given a [=/response=] |raceNetworkRequestResponse|:
1. If |raceNetworkRequestResponse|'s [=response/status=] is [=ok status=], then:
1. Set |raceResponse|'s [=race response/value=] to |raceNetworkRequestResponse|.
1. Let |raceNetworkResult| be a [=race result=] whose [=race result/routed response=] is |raceNetworkRequestResponse| and [=race result/used route=] is {{RouterSourceEnum/"network"}}.
1. [=queue/Enqueue=] |raceNetworkResult| to |queue|.
1. Otherwise, set |raceResponse|'s [=race response/value=] to a [=network error=].
1. Set |networkFetchCompleted| to true.
1. [=If aborted=] and |raceFetchController| is not null, then:
1. [=fetch controller/Abort=] |raceFetchController|.
1. Set |raceResponse| to a [=race response=] whose [=race response/value=] is null.
Expand All @@ -3279,7 +3282,14 @@ spec: storage; urlPrefix: https://storage.spec.whatwg.org/
1. If |fetchHandlerResponse| is not null and not a [=network error=], and |raceFetchController| is not null, [=fetch controller/abort=] |raceFetchController|.
1. Let |raceFetchHandlerResult| be a [=race result=] whose [=race result/routed response=] is |fetchHandlerResponse| and [=race result/used route=] is {{RouterSourceEnum/"fetch-event"}}.
1. [=queue/Enqueue=] |raceFetchHandlerResult| to |queue|.
1. Wait until |queue| is not empty.
1. Set |fetchHandlerCompleted| to true.
1. Wait until any of the following are true:
1. |queue| is not empty.
1. Both |networkFetchCompleted| and |cacheLookupCompleted| are true.
1. If |queue| is empty, then:
1. If |raceResponse|'s [=race response/value=] is a [=/response=], return |raceResponse|'s [=race response/value=].
1. If |raceResponse|'s [=race response/value=] is a [=network error=], return a [=network error=].
1. Return null.
1. Let |result| be the result of [=dequeue=] |queue|.
1. Let |routedResponse| be |result|'s [=race result/routed response=].
1. If |result|'s [=race result/used route=] is {{RouterSourceEnum/"network"}}, then:
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