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[web] DRY up access to headers required for multi-threaded WebAssembly (#163555)

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Kevin Moore 2025-02-20 16:26:57 -06:00 committed by GitHub
parent e0617ac362
commit 7819cee8d6
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GPG Key ID: B5690EEEBB952194
4 changed files with 20 additions and 19 deletions
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13
packages/flutter_tools/lib/src/isolated/devfs_web.dart
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@ -41,6 +41,7 @@ import '../web/chrome.dart';
import '../web/compile.dart';
import '../web/memory_fs.dart';
import '../web/module_metadata.dart';
import '../web/web_constants.dart';
import '../web_template.dart';
typedef DwdsLauncher =
@ -1315,11 +1316,8 @@ class ReleaseAssetServer {
'Content-Type': mimeType,
'Cross-Origin-Resource-Policy': 'cross-origin',
'Access-Control-Allow-Origin': '*',
if (_needsCoopCoep &&
_fileSystem.path.extension(file.path) == '.html') ...<String, String>{
'Cross-Origin-Opener-Policy': 'same-origin',
'Cross-Origin-Embedder-Policy': 'credentialless',
},
if (_needsCoopCoep && _fileSystem.path.extension(file.path) == '.html')
...kMultiThreadedHeaders,
},
);
}
@ -1329,10 +1327,7 @@ class ReleaseAssetServer {
file.readAsBytesSync(),
headers: <String, String>{
'Content-Type': 'text/html',
if (_needsCoopCoep) ...<String, String>{
'Cross-Origin-Opener-Policy': 'same-origin',
'Cross-Origin-Embedder-Policy': 'credentialless',
},
if (_needsCoopCoep) ...kMultiThreadedHeaders,
},
);
}

11
packages/flutter_tools/lib/src/test/flutter_web_platform.dart
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@ -32,6 +32,7 @@ import '../web/bootstrap.dart';
import '../web/chrome.dart';
import '../web/compile.dart';
import '../web/memory_fs.dart';
import '../web/web_constants.dart';
import 'test_compiler.dart';
import 'test_golden_comparator.dart';
import 'test_time_recorder.dart';
@ -57,10 +58,7 @@ shelf.Handler createDirectoryHandler(Directory directory, {required bool crossOr
file.openRead(),
headers: <String, String>{
if (contentType != null) 'Content-Type': contentType,
if (needsCrossOriginIsolated) ...<String, String>{
'Cross-Origin-Opener-Policy': 'same-origin',
'Cross-Origin-Embedder-Policy': 'credentialless',
},
if (needsCrossOriginIsolated) ...kMultiThreadedHeaders,
},
);
};
@ -551,10 +549,7 @@ class FlutterWebPlatform extends PlatformPlugin {
''',
headers: <String, String>{
'Content-Type': 'text/html',
if (webRenderer == WebRendererMode.skwasm) ...<String, String>{
'Cross-Origin-Opener-Policy': 'same-origin',
'Cross-Origin-Embedder-Policy': 'credentialless',
},
if (webRenderer == WebRendererMode.skwasm) ...kMultiThreadedHeaders,
},
);
}

9
packages/flutter_tools/lib/src/web/web_constants.dart
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@ -3,3 +3,12 @@
// found in the LICENSE file.
const String kWasmMoreInfo = 'See https://flutter.dev/to/wasm for more information.';
/// Headers required to run Wasm-compiled applications with multi-threading.
///
/// See https://developer.chrome.com/blog/coep-credentialless-origin-trial
/// for more information.
const Map<String, String> kMultiThreadedHeaders = <String, String>{
'Cross-Origin-Opener-Policy': 'same-origin',
'Cross-Origin-Embedder-Policy': 'credentialless',
};

6
packages/flutter_tools/test/general.shard/web/web_asset_server_test.dart
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@ -7,6 +7,7 @@ import 'package:flutter_tools/src/base/file_system.dart';
import 'package:flutter_tools/src/base/io.dart';
import 'package:flutter_tools/src/base/platform.dart';
import 'package:flutter_tools/src/isolated/devfs_web.dart';
import 'package:flutter_tools/src/web/web_constants.dart';
import 'package:shelf/shelf.dart';
import '../../src/common.dart';
@ -236,8 +237,9 @@ void main() {
expect(response.statusCode, HttpStatus.ok);
final Map<String, String> headers = response.headers;
expect(headers['Cross-Origin-Opener-Policy'], 'same-origin');
expect(headers['Cross-Origin-Embedder-Policy'], 'credentialless');
for (final MapEntry<String, String> entry in kMultiThreadedHeaders.entries) {
expect(headers, containsPair(entry.key, entry.value));
}
},
);