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Running debug on iOS 14 shows "would like to find and connect to devices on your local network" popup #60634

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#65138
#64988
Closed
Running debug on iOS 14 shows "would like to find and connect to devices on your local network" popup#60634
#65138
#64988
Assignees
jmagman
Labels
P1High-priority issues at the top of the work listplatform-iosiOS applications specificallytoolAffects the "flutter" command-line tool. See also t: labels.
Milestone
1.22 - August 2020

Description

@jmagman
jmagman
opened on Jun 30, 2020
2020-06-30 12:52:54.237973-0700 Runner[580:228465] Metal API Validation Enabled
2020-06-30 12:52:54.382810-0700 Runner[580:228698] flutter: Observatory listening on http://127.0.0.1:50735/u2EjnBszARk=/
2020-06-30 12:52:54.676675-0700 Runner[580:228686] fopen failed for data file: errno = 2 (No such file or directory)
2020-06-30 12:52:54.676742-0700 Runner[580:228686] Errors found! Invalidating cache...
2020-06-30 12:52:54.764319-0700 Runner[580:228686] fopen failed for data file: errno = 2 (No such file or directory)
2020-06-30 12:52:54.764380-0700 Runner[580:228686] Errors found! Invalidating cache...

flutter_02

$ flutter doctor -v
[✓] Flutter (Channel master, 1.20.0-2.0.pre, on macOS 10.16 20A4299v, locale en-US)
    • Flutter version 1.20.0-2.0.pre at /Users/surry/Projects/flutter
    • Framework revision 747fe345f1 (12 days ago), 2020-06-18 08:28:03 -0700
    • Engine revision 965fbbed17
    • Dart version 2.9.0 (build 2.9.0-14.0.dev 2b917f5b6a)

[✗] Android toolchain - develop for Android devices
    ✗ Unable to locate Android SDK.
      Install Android Studio from: https://developer.android.com/studio/index.html
      On first launch it will assist you in installing the Android SDK components.
      (or visit https://flutter.dev/docs/get-started/install/macos#android-setup for detailed instructions).
      If the Android SDK has been installed to a custom location, set ANDROID_SDK_ROOT to that location.
      You may also want to add it to your PATH environment variable.


[✓] Xcode - develop for iOS and macOS (Xcode 11.5)
    • Xcode at /Applications/Xcode-11.app/Contents/Developer
    • Xcode 11.5, Build version 11E608c
    • CocoaPods version 1.9.3

[!] Android Studio (not installed)
    • Android Studio not found; download from https://developer.android.com/studio/index.html
      (or visit https://flutter.dev/docs/get-started/install/macos#android-setup for detailed instructions).

[✓] Connected device (2 available)
    • iPad  • 00008027-001925360106802E • ios        • iOS 14.0
    • macOS • macOS                     • darwin-x64 • macOS 10.16 20A4299v

! Doctor found issues in 2 categories.

Activity

  1. jmagman
    added
    platform-iosiOS applications specifically
    toolAffects the "flutter" command-line tool. See also t: labels.
    on Jun 30, 2020

  2. jmagman commented on Jun 30, 2020

    @jmagman
    jmagman
    on Jun 30, 2020
    MemberAuthor

    Guessing new permissions on iOS 14 for the observatory? Might need an entitlement?

  3. jonahwilliams commented on Jun 30, 2020

    @jonahwilliams
    jonahwilliams
    on Jun 30, 2020
    Contributor

    Seems likely to be the mDNS broadcasting of the VM Service URI

  4. jmagman commented on Jun 30, 2020

    @jmagman
    jmagman
    on Jun 30, 2020
    MemberAuthor

    com.apple.developer.networking.multicast available iOS 14, maybe that will fix it.
    Unfortunately adding an entitlement file to the project as a migration is going to be pretty gross.

  5. jmagman commented on Jul 27, 2020

    @jmagman
    jmagman
    on Jul 27, 2020
    MemberAuthor

    Apps now trigger a prompt the first time they try to interact with the local network. Until permission is granted all local network communication is blocked. The prompt includes a usage description that you specify in your app's info.plist. Apps that haven't updated to iOS 14 will show default reason text. If you notice a prompt that you don't expect for your app, you might be using a third party framework that accesses the local network.

    https://developer.apple.com/videos/play/wwdc2020/10110/

    We can't prevent this notification, but we can have it tell the user it's related to the dart observatory by setting NSLocalNetworkUsageDescription in the Debug and Profile Info.plist.

  6. meowofficial commented on Jul 27, 2020

    @meowofficial
    meowofficial
    on Jul 27, 2020

    We can't prevent this notification, but we can have it tell the user it's related to the dart observatory by setting NSLocalNetworkUsageDescription in the Debug and Profile Info.plist.

    What is going to happen with the app if the user refuses to allow this permission?

  7. jonahwilliams commented on Jul 27, 2020

    @jonahwilliams
    jonahwilliams
    on Jul 27, 2020
    Contributor

    @meowofficial this does not affect production apps, only debug builds used by developers. If a developer does not want to allow mDNS then they cannot use hot reload.

  8. meowofficial commented on Jul 27, 2020

    @meowofficial
    meowofficial
    on Jul 27, 2020

    Thanks for explanation!

  9. xster
    added this to the 1.22 - August 2020 milestone on Aug 10, 2020
  10. jmagman
    added
    P1High-priority issues at the top of the work list
    on Aug 11, 2020
  11. xster
    assigned
    jmagman
    on Aug 24, 2020

  12. jmagman commented on Aug 31, 2020

    @jmagman
    jmagman
    on Aug 31, 2020
    MemberAuthor

    @xster how do we feel about this wording?

    Allow Flutter to attach to the Dart observatory (debug only). Your users will not see this prompt.

    flutter_01

  13. xster commented on Aug 31, 2020

    @xster
    xster
    on Aug 31, 2020
    Member

    How about "Allow Flutter tools on your computer to connect and debug your Flutter application. Will not appear on release builds".

    Since just "Flutter" might be ambiguous between meaning the app and the SDK. And "users" is a bit indirect in causation.

  14. jmagman commented on Aug 31, 2020

    @jmagman
    jmagman
    on Aug 31, 2020
    MemberAuthor

    Sounds better, what about adding "This prompt" subject to the second sentence?

    Allow Flutter tools on your computer to connect and debug your Flutter application. This prompt will not appear on release builds.

  15. xster commented on Aug 31, 2020

    @xster
    xster
    on Aug 31, 2020
    Member

    If it fits ya, the clearer the better. I just wasn't sure what the character limit is :D

  16. jmagman
    closed this as completedin #64988on Sep 2, 2020

  17. KCWebmaster commented on Apr 7, 2021

    @KCWebmaster
    KCWebmaster
    on Apr 7, 2021

    I had this happen on production. Any ideas?

  18. jmagman commented on Apr 7, 2021

    @jmagman
    jmagman
    on Apr 7, 2021
    MemberAuthor

    @KCWebmaster can you create a new issue and fill out the template and include more info?

  19. github-actions commented on Aug 2, 2021

    @github-actions
    github-actionsbot
    on Aug 2, 2021

    This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.

  20. github-actions
    locked as resolved and limited conversation to collaborators on Aug 2, 2021
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