Marc-Antoine 14821c30fb fix: Correctly extract file extension from URLs with dots in query params (#9946) ...

### Description

Fixes #9945 

The `getExtension` function (rewritten for performance in #9816) scans
the URI right-to-left, encountering dots in query parameter values (e.g.
hostnames like `app.example.com`, filenames like `en.vtt`) before
finding the `?` delimiter. This causes incorrect extension detection,
breaking MIME type resolution for URLs with signed parameters or other
query strings containing dots.

**Fix:** Split the single right-to-left scan into two passes:
1. **Left-to-right:** find the first `?` or `#` to establish the path
boundary
2. **Right-to-left:** scan backward within the path portion only,
looking for `.` or `/`

This preserves the lightweight character-scanning approach from #9816
without reintroducing the `goog.Uri` dependency.

**New test cases added:**
- Dots in query parameter values
(`?host=app.example.com&signature=abc.def`)
- Signed URLs with encoded paths and filenames in query strings
- Hostname-like values in query parameters (`?origin=cdn.example.co.uk`)
- No path extension with dotted query values (`/stream?file=video.mp4` →
`""`)
- Dots in fragment identifiers (`#t=1.5`)

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-04-08 12:11:03 -07:00

..

data_uri_plugin_unit.js

build: Change spellchecking tool and fix spelling mistakes (#7765)

2024-12-20 12:27:05 +01:00

http_plugin_unit.js

feat(net): Allow request filters to be called multiple times (#9129)

2025-09-24 11:55:47 +02:00

networking_engine_unit.js

chore: Replace PublicPromise with Promise.withResolvers (#9925)

2026-04-07 16:11:29 +02:00

networking_utils_unit.js

fix: Correctly extract file extension from URLs with dots in query params (#9946)

2026-04-08 12:11:03 -07:00