PR #55481 | Electron Releases

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This is a backport PR for branch 43-x-y

#55481: perf: reuse one file: URL loader factory per session in net.fetch()

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claude[bot]

Created: Oct 29, 2026, 10:31:01 AM

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Target: 43-x-y

Requested by Charles Kerr · Slack thread

Description of Change

Manually backport #55438. See that PR for details.

CC @ckerr

One conflict in shell/common/api/electron_api_url_loader.cc: 43-x-y doesn't have ProtocolRegistry::CreateRegisteredFactory(), so the custom-protocol branch keeps 43-x-y's FindRegistered() lookup and now passes ElectronURLLoaderFactory::Create(...) straight to the new InterceptURLLoaderFactory(PendingRemote) signature. I also dropped an unrelated client_certificate_responder_delegate.h include that doesn't exist on this branch.

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I have built and tested this change
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tests are changed or added
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https://claude.ai/code/session_01KX1hkKsEp3xdXqeQ7utXkG

Release Notes

Notes: Improved performance of repeated net.fetch() calls for file: URLs.

Generated by Claude Code

Backport Information

Backported from

#55438: perf: reuse one file: URL loader factory per session in net.fetch()

Original PR Author

ckerr

Original PR Status

Merged

Original PR Merged At

Oct 28, 2026, 10:25:37 PM

Original PR Link

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Semver Impact

Major

Breaking changes

Minor

New features

Patch

Bug fixes

None

Docs, tests, etc.

Semantic Versioning helps users understand the impact of updates:

Major (X.y.z): Breaking changes that may require code modifications
Minor (x.Y.z): New features that maintain backward compatibility
Patch (x.y.Z): Bug fixes that don't change the API
None: Changes that don't affect using facing parts of Electron