[iOS] Hot restart randomly stops working on real devices after upgrading to Flutter 3.27.1 #161466
Description
Steps to reproduce
- Upgrade to Flutter 3.27.1
- Connect iPhone 15 Pro
flutter run --verbose- Press R
Happens on all apps.
Expected results
Hot restart completes.
Actual results
Hot restart almost never completes between iPhone Pro and MacBook Pro.
Rarely, and unexplainably, it does complete in <1000ms.
Attempted fixes:
flutter clean- doesn't work- Delete and reinstalling Flutter - doesn't work
- Upgrading Flutter to latest - doesn't work
- Upgrading Dart to latest stable - doesn't work
- Upgrading Dart to latest beta - doesn't work
- Upgrading iPhone to latest stable - doesn't work
- Upgrading macOS latest stable - doesn't work
- Different iPhones - doesn't work
- Different networks - doesn't work
- Different USB-C cables - doesn't work
- Different USB-C ports - doesn't work
- Factory resetting iPhone - doesn't work
- Factory resetting macOS - doesn't work
- Downgrade Flutter to 3.24.5 - DOES work
- Use iPhone simulator - DOES work
Relevant logs:
[ ] Performing hot restart...
[ +10 ms] Scanned through 939 files in 8ms
[ ] Syncing files to device Development iPhone...
[ +1 ms] <- reset
[ ] Compiling dart to kernel with 0 updated files
[ ] Processing bundle.
[ ] <- recompile package:app/main.dart 3e53627d-f17f-4999-83a4-c8eda46ebb62
[ ] <- 3e53627d-f17f-4999-83a4-c8eda46ebb62
[ +3 ms] Bundle processing done.
[ +66 ms] Updating files.
[ ] Pending asset builds completed. Writing dirty entries.
[+29475 ms] Error writing "main.dart.swap.dill" to DevFS: HttpException: Request has been aborted
[ ] trying again in a few - 9 more attempts left
[+61249 ms] Error writing "main.dart.swap.dill" to DevFS: HttpException: Request has been aborted
[ ] trying again in a few - 8 more attempts left
[+61263 ms] Error writing "main.dart.swap.dill" to DevFS: HttpException: Request has been aborted
[ ] trying again in a few - 7 more attempts left
[+61268 ms] Error writing "main.dart.swap.dill" to DevFS: HttpException: Request has been aborted
[ ] trying again in a few - 6 more attempts left
[+61244 ms] Error writing "main.dart.swap.dill" to DevFS: HttpException: Request has been aborted
[ ] trying again in a few - 5 more attempts left
[+61263 ms] Error writing "main.dart.swap.dill" to DevFS: HttpException: Request has been aborted
[ ] trying again in a few - 4 more attempts left
[+61247 ms] Error writing "main.dart.swap.dill" to DevFS: HttpException: Request has been aborted
[ ] trying again in a few - 3 more attempts left
[+61253 ms] Error writing "main.dart.swap.dill" to DevFS: HttpException: Request has been aborted
[ ] trying again in a few - 2 more attempts left
[+61246 ms] Error writing "main.dart.swap.dill" to DevFS: HttpException: Request has been aborted
[ ] trying again in a few - 1 more attempts left
[+61255 ms] Error writing "main.dart.swap.dill" to DevFS: HttpException: Request has been aborted
[ ] trying again in a few - 0 more attempts left
[+61262 ms] Error writing "main.dart.swap.dill" to DevFS: HttpException: Request has been aborted
[ +2 ms] Could not update files on device: HttpException: Request has been aborted
[ +3 ms] Syncing files to device Development iPhone... (completed in 673.4s)
[ +2 ms] <- reject
[ +75 ms] Performing hot restart... (completed in 673.5s)
[ ] Restarted application in 673,460ms.
[ ] Try again after fixing the above error(s).
Code sample
Code sample
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Logs
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[Paste your logs here]Flutter Doctor output
Doctor output
[✓] Flutter (Channel stable, 3.27.1, on macOS 15.2 24C101 darwin-arm64, locale en-US)
• Flutter version 3.27.1 on channel stable at /Users/james/fvm/versions/3.27.1
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision 17025dd882 (4 weeks ago), 2024-12-17 03:23:09 +0900
• Engine revision cb4b5fff73
• Dart version 3.6.0
• DevTools version 2.40.2
[✓] Android toolchain - develop for Android devices (Android SDK version 35.0.0)
• Android SDK at /Users/james/Library/Android/sdk
• Platform android-35, build-tools 35.0.0
• Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 21.0.3+-79915917-b509.11)
• All Android licenses accepted.
[✓] Xcode - develop for iOS and macOS (Xcode 16.2)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Build 16C5032a
• CocoaPods version 1.16.1
[✓] Chrome - develop for the web
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome
[✓] Android Studio (version 2024.2)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 21.0.3+-79915917-b509.11)
[✓] VS Code (version 1.96.2)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.102.0
[✓] Connected device (6 available)
• Development iPhone (mobile) • 00008130-00184C1C0CA0001C • ios • iOS 18.2.1 22C161
• Virgo (mobile) • 00008140-0016219E3693001C • ios • iOS 18.2.1 22C161
• iPhone 16 (mobile) • 5558CC92-E694-44C3-BDFE-0158DB0BACE4 • ios • com.apple.CoreSimulator.SimRuntime.iOS-18-1 (simulator)
• macOS (desktop) • macos • darwin-arm64 • macOS 15.2 24C101 darwin-arm64
• Mac Designed for iPad (desktop) • mac-designed-for-ipad • darwin • macOS 15.2 24C101 darwin-arm64
• Chrome (web) • chrome • web-javascript • Google Chrome 131.0.6778.265
! Error: Browsing on the local area network for James’s Apple Watch. Ensure the device is unlocked and discoverable via Bluetooth. (code -27)
[✓] Network resources
• All expected network resources are available.
• No issues found!