Fix serialization of HotRestartRequest in AppConnection (#2792)

jyameo · web-flow · commit 5771ee58119a · 2026-03-05T22:54:24.000Z
Fix serialization issue of HotRestartRequest that was causing problems when rolling webdev in g3. Related to https://buganizer.corp.google.com/issues/484292194
diff --git a/dwds/CHANGELOG.md b/dwds/CHANGELOG.md
@@ -9,6 +9,7 @@
     a new connection request.
 - Add sourcemap logic fixes to DDC Library Bundle + build_runner execution scheme.
 - Update pathing logic for Windows and the DDC Library Bundle module system.
+- Fix serialization of `HotRestartRequest` in `AppConnection`.
 
 ## 27.0.0
 - Remove `package:built_value`, `package:built_value_generator`, and `package:built_collection` dependencies.
diff --git a/dwds/lib/src/connections/app_connection.dart b/dwds/lib/src/connections/app_connection.dart
@@ -52,5 +52,5 @@ class AppConnection {
   /// In this case, there's no need to block main execution until the debugger
   /// resends breakpoints.
   void hotRestart(HotRestartRequest request) =>
-      _connection.sink.add(jsonEncode(request.toJson()));
+      _connection.sink.add(jsonEncode(['HotRestartRequest', request.toJson()]));
 }
diff --git a/dwds/test/integration/fixtures/context.dart b/dwds/test/integration/fixtures/context.dart
@@ -764,7 +764,7 @@ class TestContext {
   /// - Entrypoints (served): web/main.dart -> main
   /// - Entrypoints (nested): test/hello_world/main.dart -> hello_world/main
   /// - Library files: lib/path/to/some_file.dart
-  ///     -> packages/<package>/path/to/some_file
+  ///     -> `packages/<package>/path/to/some_file`
   void _updateReloadedSources(String absolutePath) {
     final relativePath = p.relative(
       absolutePath,

Original file line number	Diff line number	Diff line change
`@@ -52,5 +52,5 @@ class AppConnection {`
`52`	`52`	`/// In this case, there's no need to block main execution until the debugger`
`53`	`53`	`/// resends breakpoints.`
`54`	`54`	`void hotRestart(HotRestartRequest request) =>`
`55`		`- _connection.sink.add(jsonEncode(request.toJson()));`
	`55`	`+ _connection.sink.add(jsonEncode(['HotRestartRequest', request.toJson()]));`
`56`	`56`	`}`