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[flutter_tools] Add Cache-Control headers for web test assets - #196414
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This pull request introduces caching headers for static and WebAssembly test assets in the Flutter web test platform by refactoring response handlers to use new helper methods, _cachedFileResponse and _cachedBodyResponse. It also updates the paths for Wasm assets to include leading slashes and adds comprehensive tests to verify that the Cache-Control and cross-origin isolation headers are correctly applied. Feedback suggests using a collection if in _cachedFileResponse to conditionally add the content-type header, preventing a potentially null contentType from being added to the headers map.
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…13653) Manual roll Flutter from 9c427b5d7b1c to 1b9585481095 (32 revisions) Manual roll requested by [email protected] flutter/flutter@9c427b5...1b95854 2026-11-13 [email protected] Roll pub packages (flutter/flutter#196541) 2026-11-13 [email protected] Do not route PRs for review without cla, convert to draft (flutter/flutter#196341) 2026-11-13 [email protected] Roll Skia from d87a6c04da74 to 11f46cfe8838 (13 revisions) (flutter/flutter#196533) 2026-11-13 [email protected] [flutter_tools, flutter_test] Deprecate --experimental-faster-testing (flutter/flutter#196123) 2026-11-13 [email protected] [flutter_tools] Handle RPCError in ScreenshotCommand.runSkia (flutter/flutter#196132) 2026-11-13 [email protected] Roll Dart SDK from a8b961fd48bb to c91e8b6674e2 (2 revisions) (flutter/flutter#196502) 2026-11-13 [email protected] Roll Skia from 0c5ce4960cef to d87a6c04da74 (12 revisions) (flutter/flutter#196497) 2026-11-13 [email protected] Don't call `skia_image()` for raster-owned images in `DlImage::Equals` (flutter/flutter#196473) 2026-11-13 [email protected] [flutter_tools] Require FlutterCommandRunner DI fields and extract findCommandName (flutter/flutter#196331) 2026-11-13 [email protected] [web] Unify ui.Canvas behind a shared EngineCanvas frontend (flutter/flutter#196348) 2026-11-13 [email protected] Link to MediaQuery.displayFeaturesOf from DisplayFeatures (flutter/flutter#193728) 2026-11-13 [email protected] Removes reference to unnecessary ensureSemantics call in doc (flutter/flutter#195831) 2026-11-13 [email protected] [flutter_tools] Register trackWidgetCreation in AppleBuildOptionsBundle (flutter/flutter#196078) 2026-11-12 [email protected] [Android] Skip the HardwareBuffer defect fallback for platform views (flutter/flutter#193441) 2026-11-12 [email protected] Fix supports_decal check in framebuffer_blend.frag (flutter/flutter#196227) 2026-11-12 [email protected] [ios] Update the screen in didUpdateEffectiveGeometry (flutter/flutter#195508) 2026-11-12 [email protected] [flutter_tools] Add `Cache-Control` headers for web test assets (flutter/flutter#196414) 2026-11-12 [email protected] Roll Skia from 3b71ec08218f to 0c5ce4960cef (16 revisions) (flutter/flutter#196472) 2026-11-12 [email protected] [web] Render bounded ImageFilter.blur on wimp (flutter/flutter#196081) 2026-11-12 [email protected] Roll Dart SDK from 69567bd3c427 to a8b961fd48bb (2 revisions) (flutter/flutter#196464) 2026-11-12 [email protected] [engine] Release the Skia OpenGL resource context on shutdown (flutter/flutter#193592) 2026-11-12 [email protected] [web] Fix decoding of still AVIF images on Chrome (flutter/flutter#195958) 2026-11-12 [email protected] Gate SurfaceControl context setting on API 34+ (flutter/flutter#196394) 2026-11-12 [email protected] [flutter_tools] Only pass on a valid root tool in DASH__TOOL (flutter/flutter#196228) 2026-11-12 [email protected] Support GL_TEXTURE_EXTERNAL_OES embedder textures in Impeller (flutter/flutter#195857) 2026-11-12 [email protected] Stop building linux/wasm_release in local_engine_builds (flutter/flutter#196345) 2026-11-12 [email protected] Split flame out of Linux customer_testing (flutter/flutter#196347) 2026-11-12 Jiwon Lee [Windows] Fix Space input after Alt+Space with previous Microsoft IME (flutter/flutter#192105) 2026-11-12 [email protected] [flutter_tools] Add ToolExtensionException, exit() guard, graceful shutdown, and base modifiers (flutter/flutter#195908) 2026-11-12 [email protected] Roll Packages from 653628e to 14f9933 (9 revisions) (flutter/flutter#196450) 2026-11-12 [email protected] Roll Dart SDK from e5add7a25b32 to 69567bd3c427 (2 revisions) (flutter/flutter#196437) 2026-11-12 [email protected] Roll Skia from 9aa2513a4ac9 to 3b71ec08218f (1 revision) (flutter/flutter#196436) If this roll has caused a breakage, revert this CL and set the roller to dry run mode using the controls here: https://autoroll.skia.org/r/flutter-packages Please CC [email protected],[email protected] on the revert to ensure that a human is aware of the problem. To file a bug in Packages: https://github.com/flutter/flutter/issues/new/choose To report a problem with the AutoRoller itself, please file a bug: https://issues.skia.org/issues/new?component=1389291&template=1850622 ...
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When running
flutter test --platform=chrome, suites run sequentially inside iframes within one browser session. BecauseFlutterWebPlatformonly setCache-Controlfor local CanvasKit files, Chrome re-fetched/flutter.js,/dart_sdk.js, DDC bootstrap scripts,*.dart.lib.jsmodules, static assets, and Wasm files on every suite.This PR adds
Cache-Control: public, max-age=3600andContent-Lengthon immutable test assets (leaving suite HTML wrappers, goldens, and WebSockets uncached), checksdart_sdk.js.mapbeforedart_sdk.js, and root-anchorsmainWasmPath(/main.dart.wasm) andjsSupportRuntimePath(/main.dart.mjs) because_loadWasmEntrypointresolves them viaresolveUrlWithSegmentsagainstdocument.baseURI.Interleaved try benchmarks (
b98afb52407vs PR; e.g. CanvasKit #115333 vs #115334, Skwasm #63572 vs #63573):N/arm)p)p)Linux web_canvaskit_tests_6(6)842.9s509.0s-333.8s(-39.6%,9.94e-4)-293.2s(4.58e-8)Linux web_canvaskit_tests_6(6)438.8s119.4s-319.4s(-72.8%,1.72e-4)-276.3s(1.78e-11)Linux web_skwasm_tests_1(20)642.4s593.9s-48.5s(-7.5%,0.011)-28.3s(2.21e-4)Linux web_skwasm_tests_1(20)159.7s127.8s-31.8s(-19.9%,1.43e-6)-26.9s(3.72e-9)CanvasKit runs used
bc5f0d30e95and Skwasm runs used4db031bf3fd(pooling all30Skwasm pairs gives-15.6sstep,p = 0.019, and-20.2ssuite load,p = 2.12e-7).Part of #174961
May help #195700