Dart-code: Failed to register observatory port with mDNS with error -65555.

[lukepighetti]

I don't have a reproduction for this, but I have run into a situation where I can launch with flutter run but trying to launch with the VSCode debug button I get this error

[VERBOSE-2:FlutterObservatoryPublisher.mm(101)] Failed to register observatory port with mDNS with error -65555.
[VERBOSE-2:FlutterObservatoryPublisher.mm(103)] On iOS 14+, local network broadcast in apps need to be declared in the app's Info.plist. Debug and profile Flutter apps and modules host VM services on the local network to support debugging features such as hot reload and DevTools. To make your Flutter app or module attachable and debuggable, add a '_dartobservatory._tcp' value to the 'NSBonjourServices' key in your Info.plist for the Debug/Profile configurations. For more information, see https://flutter.dev/docs/development/add-to-app/ios/project-setup#local-network-privacy-permissions
[VERBOSE-2:FlutterObservatoryPublisher.mm(101)] Failed to register observatory port with mDNS with error -65555.
[VERBOSE-2:FlutterObservatoryPublisher.mm(103)] On iOS 14+, local network broadcast in apps need to be declared in the app's Info.plist. Debug and profile Flutter apps and modules host VM services on the local network to support debugging features such as hot reload and DevTools. To make your Flutter app or module attachable and debuggable, add a '_dartobservatory._tcp' value to the 'NSBonjourServices' key in your Info.plist for the Debug/Profile configurations. For more information, see https://flutter.dev/docs/development/add-to-app/ios/project-setup#local-network-privacy-permissions

[DanTup]

I can't think of a reason this would only occur in VS Code, but if it's intermittent maybe that's just coincidence. There's an open issue in Flutter that I think may be related:

https://github.com/flutter/flutter/issues/72161

All of this code is deep within Flutter (there's no real iOS/device-platform specific code in the extension) so I don't think it's something that can be fixed here.

[lukepighetti]

Not sure if it's VSCode specific or attaching debugger specific or what. But this is happening consistently for me now. VSCode debug won't launch past the splash screen, but flutter run works perfectly fine. It may be upstream? If it is, please don't hesitate to close this.

[DanTup]

If it's reliably reproducible only from VS Code, my guess would be something different in the environment. Does it make a difference if you use the terminal in VS Code versus running under the debugger?

[lukepighetti]

In both cases I am using VSCode. IE: success in VSCode terminal, failure with VSCode debug.

[lukepighetti]

I can't reproduce this today. I'll reopen if it happens again.

[alechangbiao]

I'm facing the same problem on vscode, flutter runs on terminal but not on vscode debug,however everytime when I use an IKEv2 VPN the problem disappears.

[lukepighetti]

Yes, I am still having this problem. Forgot to reopen. Been dealing with it for the last 7 days.

[DanTup]

Can anyone provide a sample project that triggers this, and a log captured with Capture Debugging Logs?

[github-actions[bot]]

This issue has been marked stale because it is tagged awaiting-info for 30 days with no activity. Remove the stale label or comment to prevent the issue being closed in 10 days.

[DanTup]

@lukepighetti are you still having this problem? Are you able to repro in a small project and/or capture a full verbose log?

[lukepighetti]

Dan I'm going to close this issue because I haven't seen it in the last 30 days. Will reopen if I do. Thanks for the follow up.