Skip to content

fix(flutter_tools): defensively catch DWDS unregistered service extension errors#186896

Merged
auto-submit[bot] merged 3 commits into
flutter:masterfrom
kevmoo:dwds_developer_work_around
May 22, 2026
Merged

fix(flutter_tools): defensively catch DWDS unregistered service extension errors#186896
auto-submit[bot] merged 3 commits into
flutter:masterfrom
kevmoo:dwds_developer_work_around

Conversation

@kevmoo

@kevmoo kevmoo commented May 21, 2026

Copy link
Copy Markdown
Contributor

During web hot reloads, the tool attempts to evict assets using ext.flutter.evict.
If the service extension hasn't been registered in the browser client yet (e.g., immediately
after the app connection is established), native platforms throw a standard kMethodNotFound (-32601)
error, which the tool handles gracefully.

However, on web/DWDS, a null-assertion in DDC's dart:developer patch throws
an Unexpected null value error which DWDS propagates as a -32603 internal error.
This change catches these DWDS-specific unregistered extension errors and treats
them identically to unregistered native service extensions.

Remove this work-around once dart-lang/sdk#63424 is fixed.

This is the root cause of the revert in 7ed7e21

…sion errors

During web hot reloads, the tool attempts to evict assets using `ext.flutter.evict`.
If the service extension hasn't been registered in the browser client yet (e.g., immediately
after the app connection is established), native platforms throw a standard `kMethodNotFound` (-32601)
error, which the tool handles gracefully.

However, on web/DWDS, a null-assertion in DDC's `dart:developer` patch throws
an `Unexpected null value` error which DWDS propagates as a `-32603` internal error.
This change catches these DWDS-specific unregistered extension errors and treats
them identically to unregistered native service extensions.

Remove this work-around once dart-lang/sdk#63424 is fixed.

This is the root cause of the revert in flutter@7ed7e21
@flutter-dashboard flutter-dashboard Bot added the CICD Run CI/CD label May 21, 2026
@kevmoo kevmoo requested a review from bkonyi May 21, 2026 16:38
@github-actions github-actions Bot added the tool Affects the "flutter" command-line tool. See also t: labels. label May 21, 2026

@gemini-code-assist gemini-code-assist Bot left a comment

Copy link
Copy Markdown
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Code Review

This pull request introduces an extension property isServiceExtensionUnregisteredError on RPCError to handle DWDS-specific internal errors that occur when service extensions are invoked before registration. The FlutterVmService class is updated to utilize this property, and corresponding unit tests are added. Review feedback recommends replacing the magic number -32603 with the named constant vm_service.RPCErrorKind.kInternalError.code in both the source code and tests to enhance readability and maintain consistency.

Comment thread packages/flutter_tools/lib/src/vmservice.dart Outdated
Comment thread packages/flutter_tools/test/general.shard/vmservice_test.dart Outdated
Comment thread packages/flutter_tools/test/general.shard/vmservice_test.dart Outdated
- Replaces magic number -32603 with vm_service.RPCErrorKind.kInternalError.code in both source and tests.
- Fixes style constraint on the TODO comment.
@github-actions github-actions Bot removed the CICD Run CI/CD label May 21, 2026
@kevmoo

kevmoo commented May 21, 2026

Copy link
Copy Markdown
Contributor Author

/gemini review

@gemini-code-assist gemini-code-assist Bot left a comment

Copy link
Copy Markdown
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Code Review

This pull request introduces a workaround for a DWDS-specific issue where calling an unregistered service extension results in an internal error instead of a method-not-found error. It adds an isServiceExtensionUnregisteredError extension property to vm_service.RPCError to detect both standard and DWDS-specific unregistered service errors and updates FlutterVmService to utilize this check. Additionally, a unit test was added to verify the new error detection logic. I have no feedback to provide.

@harryterkelsen harryterkelsen left a comment

Copy link
Copy Markdown
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

LGTM

@kevmoo kevmoo added the autosubmit Merge PR when tree becomes green via auto submit App label May 22, 2026
@auto-submit auto-submit Bot removed the autosubmit Merge PR when tree becomes green via auto submit App label May 22, 2026
@auto-submit

auto-submit Bot commented May 22, 2026

Copy link
Copy Markdown
Contributor

auto label is removed for flutter/flutter/186896, Failed to enqueue flutter/flutter/186896 with HTTP 400: Pull request Required status check "Merge Queue Guard" is expected..

@kevmoo kevmoo deleted the dwds_developer_work_around branch May 26, 2026 17:20
auto-submit Bot pushed a commit to flutter/packages that referenced this pull request May 26, 2026
Roll Flutter from e03b91f1fe34 to f3a4b9897834 (63 revisions)

flutter/flutter@e03b91f...f3a4b98

2026-05-26 [email protected] Update batch release doc to reflect latest workflow (flutter/flutter#186979)
2026-05-26 [email protected] Roll Skia from 0442274cc696 to 27a819894f7c (5 revisions) (flutter/flutter#187094)
2026-05-26 [email protected] [Tool Robustness] Gracefully handle asynchronous subprocess crashes and connection timeouts (flutter/flutter#186964)
2026-05-26 [email protected] [pubspec] Bump Dart SDK constraint to ^3.13.0 (flutter/flutter#186957)
2026-05-26 [email protected] Roll Dart SDK from 7eb54169841d to 00e625453c43 (1 revision) (flutter/flutter#187086)
2026-05-26 [email protected] [Impeller] Retire Y-coord-scale plumbing by flipping GLES at the vertex stage (flutter/flutter#186556)
2026-05-26 [email protected] Roll Skia from f4f294bdf98d to 0442274cc696 (2 revisions) (flutter/flutter#187079)
2026-05-26 [email protected] [flutter_tools] Fix version cache poisoning from git environment variables (flutter/flutter#186595)
2026-05-26 [email protected] [Tool] Handle DTD connection failures gracefully in widget-preview (flutter/flutter#186952)
2026-05-25 [email protected] Roll Skia from 9d1adb5f2427 to f4f294bdf98d (1 revision) (flutter/flutter#187056)
2026-05-25 [email protected] Roll Skia from 4dd78179e6ec to 9d1adb5f2427 (1 revision) (flutter/flutter#187048)
2026-05-25 [email protected] Roll Skia from 1f26101197bf to 4dd78179e6ec (4 revisions) (flutter/flutter#187044)
2026-05-24 [email protected] Roll Skia from bbe9ccc2bdbf to 1f26101197bf (1 revision) (flutter/flutter#187016)
2026-05-24 [email protected] Roll Fuchsia Linux SDK from nsgcNDlZOuweOvy3Q... to Itd2Jq_ZIABH2rW7B... (flutter/flutter#187032)
2026-05-23 [email protected] Roll Dart SDK from 7e0f28eb5315 to 7eb54169841d (1 revision) (flutter/flutter#187005)
2026-05-23 [email protected] Roll Dart SDK from 90e55fa88456 to 7e0f28eb5315 (1 revision) (flutter/flutter#186990)
2026-05-23 [email protected] Roll Fuchsia Linux SDK from 6T6BY9PTftoG3vP_1... to nsgcNDlZOuweOvy3Q... (flutter/flutter#186984)
2026-05-23 [email protected] iOS] Migrate VSyncClient to a pure Obj-C implementation (#186166) (flutter/flutter#186935)
2026-05-23 [email protected] Disables embedder_tests.cm for fuchsia (flutter/flutter#186969)
2026-05-23 [email protected] Roll Dart SDK from b8414c46f6c7 to 90e55fa88456 (2 revisions) (flutter/flutter#186977)
2026-05-22 [email protected] Roll Skia from 6fdb013d1953 to bbe9ccc2bdbf (1 revision) (flutter/flutter#186980)
2026-05-22 [email protected] [web] Fix cutoff text in WebParagraph (flutter/flutter#186819)
2026-05-22 [email protected] fix(web): Removes the iterative downscaling hack (flutter/flutter#186914)
2026-05-22 [email protected] opts the linux embedder into sdf rendering (flutter/flutter#186909)
2026-05-22 [email protected] Roll Skia from dae8778ca40d to 6fdb013d1953 (5 revisions) (flutter/flutter#186970)
2026-05-22 [email protected] Fix hooks inputs outputs rebuilt (flutter/flutter#186701)
2026-05-22 [email protected] adds linux impeller integration test for external textures (flutter/flutter#186759)
2026-05-22 [email protected] fix(flutter_tools): defensively catch DWDS unregistered service extension errors (flutter/flutter#186896)
2026-05-22 [email protected] [Impeller] Add golden harness support to the renderer test layer (flutter/flutter#186735)
2026-05-22 [email protected] [web] Remove image codecs from canvaskit_chromium (flutter/flutter#178133)
2026-05-22 [email protected] opts all macos into wide gamut (flutter/flutter#186277)
2026-05-22 [email protected] Roll Skia from 356185490a75 to dae8778ca40d (9 revisions) (flutter/flutter#186949)
2026-05-22 [email protected] Filter out SwiftPM schemes when fetching schemes (flutter/flutter#186006)
2026-05-22 [email protected] Roll Packages from 3754d04 to 69cf959 (1 revision) (flutter/flutter#186950)
2026-05-22 [email protected] Roll Dart SDK from eca46bec956d to b8414c46f6c7 (2 revisions) (flutter/flutter#186944)
2026-05-22 [email protected] Saves a DeviceHolderVK with the CommandPoolVK (flutter/flutter#186749)
2026-05-22 [email protected] Roll Dart SDK from e0d509fd676e to eca46bec956d (1 revision) (flutter/flutter#186922)
2026-05-22 [email protected] [ Tool ] Stop generating widget preview scaffold under $TMP (flutter/flutter#186476)
2026-05-21 [email protected] Fix typo in StretchingOverscrollIndicator docs (flutter/flutter#186897)
2026-05-21 [email protected] Roll Dart SDK from 28c7cb5a8e8d to e0d509fd676e (1 revision) (flutter/flutter#186903)
2026-05-21 [email protected] Fix some issues in the integration between EmbedderExternalViewEmbedder and Impeller (flutter/flutter#184905)
2026-05-21 [email protected] Fix a potential buffer overflow in the animated PNG decoder when parsing malformed fdAT chunks (flutter/flutter#186700)
2026-05-21 [email protected] Roll Skia from 2ff20950975d to 356185490a75 (5 revisions) (flutter/flutter#186892)
2026-05-21 [email protected] Add primitive shadows to rendering benchmark (flutter/flutter#186779)
2026-05-21 [email protected] Move prefetchSwiftPackages to be per platform (flutter/flutter#186468)
2026-05-21 [email protected] Upgrade iOS version (flutter/flutter#186889)
...
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Labels

CICD Run CI/CD tool Affects the "flutter" command-line tool. See also t: labels.

Projects

None yet

Development

Successfully merging this pull request may close these issues.

2 participants