[auth] verifyPhone Completer got messed up

[dovahkrid]

I'm trying to verify phone with Firebase.

The first verification (the first verifyPhoneNumberFirebase call was okay (open the captcha, did not verify but press back, still go to codeSent, don't know why).

But the second verification (the second verifyPhoneNumberFirebase, which happened after the first one about few seconds) got timed out, ran codeAutoRetrievalTimeout. But the weird thing is the completer got completed, with the result of the previous call (codeSent) even though it got re-inited. Here's the code

Future<DataResponse> verifyPhoneNumberFirebase({String phoneNumb}) async {
    final completer = Completer<DataResponse>(); /// <--- init and re-init
    _auth
        .verifyPhoneNumber(
      phoneNumber: phoneNumb,
      verificationCompleted: (PhoneAuthCredential credential) {
        completer.complete(successSomething(verificationId));
      },
      verificationFailed: (FirebaseAuthException e) {
        completer.complete(errorHandling('error');
        }
      },
      codeSent: (String verificationId, int resendToken) {
        completer.complete(successSomething(verificationId)); 
         /// the first complete, 
         /// and somehow the second complete, 
         /// even though it did not go to this line in the second call
      },
      codeAutoRetrievalTimeout: (String verificationId) {
        completer.complete(errorHandling('error'); /// <----- already completed ???
      },
    );
    return completer.future;
  }

Here the log

[ERROR:flutter/lib/ui/ui_dart_state.cc(199)] Unhandled Exception: Bad state: Future already completed
_AsyncCompleter.complete (dart:async/future_impl.dart:45:31)
...

Right now I have no idea how to get the codeAutoRetrievalTimeout output.

Edit: Hmmm, seems the codeAutoRetrievalTimeout is actually from the first call. But why the second call doesn't return anything ? Error callback ? Exception ?

Steps to reproduce

Steps to reproduce the behavior:

1. Call verifyPhoneNumberFirebase
2. Get the reCaptcha screen, go back (not verify anything). Code ran into codeSent
3. Call verifyPhoneNumberFirebase again
4. Code ran into codeAutoRetrievalTimeout, but the completer got completed with the result of the previous codeSent

Flutter doctor

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Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 2.2.2, on macOS 11.4 20F71 darwin-x64, locale en-VN)
[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
[✓] Xcode - develop for iOS and macOS
[✓] Chrome - develop for the web
[✓] Android Studio (version 4.2)
[✓] VS Code (version 1.57.1)
[✓] Connected device (2 available)

---

Flutter dependencies

Run flutter pub deps -- --style=compact and paste the output below:

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Dart SDK 2.13.3
Flutter SDK 2.2.2
flutter_boilerplate 1.7.4+16

dependencies:
- badges 2.0.1 [flutter]
- barcode_flutter 1.1.2 [flutter]
- bloc 7.0.0 [meta]
- cached_network_image 3.0.0 [flutter flutter_cache_manager octo_image]
- carousel_slider 3.0.0 [flutter]
- connectivity 3.0.6 [flutter meta connectivity_platform_interface connectivity_macos connectivity_for_web]
- convex_bottom_bar 3.0.0 [flutter]
- crypto 3.0.1 [collection typed_data]
- cupertino_icons 1.0.3
- device_info 2.0.2 [flutter device_info_platform_interface]
- dotted_border 2.0.0 [flutter path_drawing]
- easy_debounce 2.0.0 [flutter]
- encrypt 5.0.0 [args asn1lib clock collection crypto pointycastle]
- equatable 2.0.3 [collection meta]
- fdottedline 1.0.1 [flutter]
- firebase_auth 1.4.1 [firebase_auth_platform_interface firebase_auth_web firebase_core firebase_core_platform_interface flutter meta]
- flutter 0.0.0 [characters collection meta typed_data vector_math sky_engine]
- flutter_app_badger 1.2.0 [flutter]
- flutter_bloc 7.0.1 [flutter bloc provider]
- flutter_config 2.0.0 [flutter]
- flutter_datetime_picker 1.5.1 [flutter]
- flutter_easyloading 2.0.0 [flutter flutter_spinkit lottie]
- flutter_facebook_auth 3.4.1 [flutter flutter_facebook_auth_platform_interface flutter_facebook_auth_web]
- flutter_form_builder 6.0.1 [flutter flutter_localizations intl collection]
- flutter_localizations 0.0.0 [flutter intl characters clock collection meta path typed_data vector_math]
- flutter_page_indicator 0.0.3 [flutter]
- flutter_screenutil 5.0.0+2 [flutter]
- flutter_secure_storage 4.2.0 [meta flutter]
- flutter_slidable 0.6.0 [flutter]
- flutter_spinkit 4.1.2+1 [flutter]
- flutter_spinning_wheel 1.1.0 [flutter meta]
- flutter_staggered_grid_view 0.4.0 [flutter]
- flutter_swiper 1.1.6 [flutter transformer_page_view flutter_page_indicator]
- flutter_switch 0.3.1 [flutter]
- flutter_translate 3.0.1 [flutter universal_io]
- fluttertoast 8.0.7 [flutter flutter_web_plugins]
- formz 0.4.0
- get_ip 0.4.0 [flutter]
- google_sign_in 5.0.4 [google_sign_in_platform_interface google_sign_in_web flutter meta]
- hive 2.0.4 [meta crypto]
- hive_flutter 1.0.0 [flutter hive path_provider path]
- http 0.13.3 [async http_parser meta path pedantic]
- image_picker 0.8.0+3 [flutter flutter_plugin_android_lifecycle image_picker_platform_interface image_picker_for_web]
- intl 0.17.0 [clock path]
- json_annotation 4.0.1
- local_auth 0.6.3+4 [flutter meta intl platform flutter_plugin_android_lifecycle]
- lottie 1.0.1 [archive characters charcode collection flutter logging meta path vector_math]
- mask_text_input_formatter 2.0.0 [flutter]
- menu_button 1.4.2+1 [flutter]
- meta 1.3.0
- native_contact_picker 0.0.6 [flutter]
- onesignal_flutter 3.0.0 [flutter]
- permission_handler 8.1.1 [flutter meta permission_handler_platform_interface]
- pin_code_fields 7.2.0 [flutter]
- provider 5.0.0 [collection flutter nested]
- pull_to_refresh 2.0.0 [flutter]
- qr_code_scanner 0.5.1 [js flutter flutter_web_plugins]
- qr_flutter 4.0.0 [flutter qr]
- responsive_framework 0.1.2 [flutter collection]
- rflutter_alert 2.0.2 [flutter]
- rxdart 0.27.1
- sensors 2.0.3 [flutter]
- sentry_flutter 5.1.0 [flutter flutter_web_plugins sentry package_info_plus]
- share 2.0.4 [meta mime flutter]
- share_plus 2.1.4 [meta mime flutter share_plus_platform_interface share_plus_linux share_plus_macos share_plus_windows share_plus_web]
- shared_preferences 2.0.6 [meta flutter shared_preferences_platform_interface shared_preferences_linux shared_preferences_macos shared_preferences_web shared_preferences_windows]
- shimmer 2.0.0 [flutter]
- sign_in_with_apple 3.0.0 [flutter meta]
- smooth_page_indicator 0.2.3 [flutter]
- sqflite 2.0.0+3 [flutter sqflite_common path]
- syncfusion_flutter_datepicker 19.1.69-beta [flutter intl syncfusion_flutter_core]
- transformer_page_view 0.1.6 [flutter]
- tuple 2.0.0 [quiver]
- url_launcher 6.0.6 [flutter meta url_launcher_linux url_launcher_macos url_launcher_platform_interface url_launcher_web url_launcher_windows]
- webview_flutter 2.0.8 [flutter]

dev dependencies:
- build_runner 2.0.4 [args async analyzer build build_config build_daemon build_resolvers build_runner_core code_builder collection crypto dart_style frontend_server_client glob graphs http_multi_server io js logging meta mime package_config path pedantic pool pub_semver pubspec_parse shelf shelf_web_socket stack_trace stream_transform timing watcher web_socket_channel yaml]
- effective_dart 1.3.1
- flutter_test 0.0.0 [flutter test_api path fake_async clock stack_trace vector_math async boolean_selector characters charcode collection matcher meta source_span stream_channel string_scanner term_glyph typed_data]
- json_serializable 4.1.3 [analyzer build build_config collection json_annotation meta path source_gen]
- lint 1.5.3
- linter 1.6.1 [analyzer args collection glob http meta path source_span yaml]
- logger 1.0.0
- material_floating_search_bar 0.3.4 [flutter meta]
- pedantic 1.11.1

transitive dependencies:
- _fe_analyzer_shared 22.0.0 [meta]
- analyzer 1.7.1 [_fe_analyzer_shared cli_util collection convert crypto glob meta package_config path pub_semver source_span watcher yaml pedantic]
- archive 3.1.2 [crypto path]
- args 2.1.1
- asn1lib 1.0.2
- async 2.6.1 [meta collection]
- boolean_selector 2.1.0 [source_span string_scanner]
- build 2.0.2 [analyzer async convert crypto glob logging meta path]
- build_config 1.0.0 [checked_yaml json_annotation path pubspec_parse yaml]
- build_daemon 3.0.0 [built_collection built_value http_multi_server logging pedantic path pool shelf shelf_web_socket stream_transform watcher web_socket_channel]
- build_resolvers 2.0.3 [analyzer async build crypto graphs logging path package_config pool pub_semver stream_transform yaml]
- build_runner_core 7.0.0 [async build build_config build_resolvers collection convert crypto glob graphs json_annotation logging meta path package_config pedantic pool timing watcher yaml]
- built_collection 5.1.0
- built_value 8.1.0 [built_collection collection fixnum meta]
- characters 1.1.0
- charcode 1.2.0
- checked_yaml 2.0.1 [json_annotation source_span yaml]
- cli_util 0.3.0 [meta path]
- clock 1.1.0
- code_builder 4.0.0 [built_collection built_value collection matcher meta]
- collection 1.15.0
- connectivity_for_web 0.4.0 [connectivity_platform_interface flutter_web_plugins flutter]
- connectivity_macos 0.2.0 [flutter]
- connectivity_platform_interface 2.0.1 [flutter meta plugin_platform_interface]
- convert 3.0.0 [typed_data]
- dart_style 2.0.1 [analyzer args path pub_semver source_span]
- device_info_platform_interface 2.0.1 [flutter meta plugin_platform_interface]
- fake_async 1.2.0 [clock collection]
- ffi 1.1.2
- file 6.1.2 [meta path]
- firebase_auth_platform_interface 4.3.1 [firebase_core flutter meta plugin_platform_interface]
- firebase_auth_web 1.3.1 [firebase_auth_platform_interface firebase_core firebase_core_web flutter flutter_web_plugins http_parser intl js meta]
- firebase_core 1.3.0 [firebase_core_platform_interface firebase_core_web flutter meta]
- firebase_core_platform_interface 4.0.1 [collection flutter meta plugin_platform_interface]
- firebase_core_web 1.1.0 [firebase_core_platform_interface flutter flutter_web_plugins js meta]
- fixnum 1.0.0
- flutter_blurhash 0.6.0 [flutter meta pedantic]
- flutter_cache_manager 3.1.2 [clock collection file flutter http path path_provider pedantic rxdart sqflite uuid]
- flutter_facebook_auth_platform_interface 2.6.1 [flutter plugin_platform_interface]
- flutter_facebook_auth_web 2.6.0+1 [flutter flutter_web_plugins js flutter_facebook_auth_platform_interface]
- flutter_plugin_android_lifecycle 2.0.2 [flutter]
- flutter_web_plugins 0.0.0 [flutter js characters collection meta typed_data vector_math]
- frontend_server_client 2.1.0 [async path]
- glob 2.0.1 [async collection file path pedantic string_scanner]
- google_sign_in_platform_interface 2.0.1 [flutter meta quiver]
- google_sign_in_web 0.10.0 [google_sign_in_platform_interface flutter flutter_web_plugins meta js]
- graphs 2.0.0
- http_multi_server 3.0.1 [async]
- http_parser 4.0.0 [charcode collection source_span string_scanner typed_data]
- image_picker_for_web 2.0.0 [image_picker_platform_interface meta flutter flutter_web_plugins]
- image_picker_platform_interface 2.1.0 [flutter meta http plugin_platform_interface]
- io 1.0.0 [meta path string_scanner]
- js 0.6.3
- logging 1.0.1
- matcher 0.12.10 [stack_trace]
- mime 1.0.0
- nested 1.0.0 [flutter]
- octo_image 1.0.0+1 [flutter flutter_blurhash]
- package_config 2.0.0 [path]
- package_info_plus 1.0.3 [flutter package_info_plus_platform_interface package_info_plus_linux package_info_plus_macos package_info_plus_windows package_info_plus_web]
- package_info_plus_linux 1.0.2 [package_info_plus_platform_interface flutter path]
- package_info_plus_macos 1.1.1 [flutter]
- package_info_plus_platform_interface 1.0.1 [flutter meta plugin_platform_interface]
- package_info_plus_web 1.0.2 [http package_info_plus_platform_interface flutter flutter_web_plugins meta]
- package_info_plus_windows 1.0.2 [package_info_plus_platform_interface ffi flutter win32]
- path 1.8.0
- path_drawing 0.5.1 [vector_math meta path_parsing flutter]
- path_parsing 0.2.1 [vector_math meta]
- path_provider 2.0.2 [flutter path_provider_platform_interface path_provider_macos path_provider_linux path_provider_windows]
- path_provider_linux 2.0.0 [path xdg_directories path_provider_platform_interface flutter]
- path_provider_macos 2.0.0 [flutter]
- path_provider_platform_interface 2.0.1 [flutter meta platform plugin_platform_interface]
- path_provider_windows 2.0.1 [path_provider_platform_interface meta path flutter ffi win32]
- permission_handler_platform_interface 3.6.0 [flutter meta plugin_platform_interface]
- platform 3.0.0
- plugin_platform_interface 2.0.0 [meta]
- pointycastle 3.1.2 [collection convert]
- pool 1.5.0 [async stack_trace]
- process 4.2.1 [file path platform]
- pub_semver 2.0.0 [collection]
- pubspec_parse 1.0.0 [checked_yaml collection json_annotation pub_semver yaml]
- qr 2.0.0 [meta]
- quiver 3.0.1 [matcher]
- sentry 5.1.0 [http meta stack_trace uuid]
- share_plus_linux 2.0.3 [share_plus_platform_interface file flutter meta url_launcher]
- share_plus_macos 2.0.2 [share_plus_platform_interface flutter]
- share_plus_platform_interface 2.0.1 [flutter meta mime plugin_platform_interface]
- share_plus_web 2.0.4 [share_plus_platform_interface url_launcher flutter flutter_web_plugins meta]
- share_plus_windows 2.0.3 [share_plus_platform_interface flutter meta url_launcher]
- shared_preferences_linux 2.0.0 [flutter file meta path path_provider_linux shared_preferences_platform_interface]
- shared_preferences_macos 2.0.0 [shared_preferences_platform_interface flutter]
- shared_preferences_platform_interface 2.0.0 [flutter]
- shared_preferences_web 2.0.0 [shared_preferences_platform_interface flutter flutter_web_plugins meta]
- shared_preferences_windows 2.0.0 [shared_preferences_platform_interface flutter file meta path path_provider_platform_interface path_provider_windows]
- shelf 1.1.4 [async collection http_parser path stack_trace stream_channel]
- shelf_web_socket 1.0.1 [shelf stream_channel web_socket_channel]
- sky_engine 0.0.99
- source_gen 1.0.2 [analyzer async build dart_style glob meta path pedantic source_span yaml]
- source_span 1.8.1 [collection path term_glyph]
- sqflite_common 2.0.0+2 [synchronized path meta]
- stack_trace 1.10.0 [path]
- stream_channel 2.1.0 [async]
- stream_transform 2.0.0
- string_scanner 1.1.0 [charcode source_span]
- syncfusion_flutter_core 19.1.69 [vector_math flutter]
- synchronized 3.0.0
- term_glyph 1.2.0
- test_api 0.3.0 [async boolean_selector collection meta path source_span stack_trace stream_channel string_scanner term_glyph matcher]
- timing 1.0.0 [json_annotation]
- typed_data 1.3.0 [collection]
- universal_io 2.0.4 [collection crypto meta typed_data]
- url_launcher_linux 2.0.0 [flutter]
- url_launcher_macos 2.0.0 [flutter]
- url_launcher_platform_interface 2.0.3 [flutter plugin_platform_interface]
- url_launcher_web 2.0.1 [flutter flutter_web_plugins meta url_launcher_platform_interface]
- url_launcher_windows 2.0.0 [flutter]
- uuid 3.0.4 [crypto]
- vector_math 2.1.0
- watcher 1.0.0 [async path pedantic]
- web_socket_channel 2.1.0 [async crypto stream_channel]
- win32 2.1.5 [ffi]
- xdg_directories 0.2.0 [meta path process]
- yaml 3.1.0 [collection source_span string_scanner]

---

[ayeshasiddika9196]

Sing out

[dovahkrid]

I sang my throat out, nothing happened.
J/k: verifyPhoneNumber needs a then callback to handling thing properly