8000 Blank screen but sometimes it works · Issue #579 · flutter-webrtc/flutter-webrtc · GitHub
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Blank screen but sometimes it works #579

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pulstar opened this issue Jun 3, 2021 · 1 comment
Open

Blank screen but sometimes it works #579

pulstar opened this issue Jun 3, 2021 · 1 comment

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@pulstar
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pulstar commented Jun 3, 2021 •
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Describe the bug

I did setup the Signaling and the TURN server and they are fine and working. I configured the flutter_webrtc_demo and compiled it. I chose the P2P Call Sample and it connected well. I can see both devices in the list. But when I try to connect two devices using different wifi connections, it shows only a blank screen. But sometimes it works and takes several seconds to work, but most of the time it don't. Also, when it connect, only one side have image. Local image shows fine on both devices. In the logs I got the error below, but I have no idea of what it is about.

PlatformException(videoRendererSetSrcObject, videoRendererSetSrcObject(): render [48] not found !, null, null) [2021-06-02 17:35:58]
I/flutter ( 9163): Exception: PlatformException(videoRendererSetSrcObject, videoRendererSetSrcObject(): render [48] not found !, null, null)
I/flutter ( 9163): #0 StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:581:7)
I/flutter ( 9163): #1 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:158:18)
I/flutter ( 9163):
I/flutter ( 9163): #2 RTCVideoRendererNative.srcObject=. (package:flutter_webrtc/src/native/rtc_video_renderer_impl.dart)
I/flutter ( 9163):
D/MediaConstraintsUtils( 9163): mandatory constraints are not a map
D/MediaConstraintsUtils( 9163): optional constraints are not an array
I/org.webrtc.Logging( 9163): WebRtcAudioRecordExternal: enableBuiltInAEC(true)
I/org.webrtc.Logging( 9163): WebRtcAudioEffectsExternal: setAEC(true)
I/org.webrtc.Logging( 9163): WebRtcAudioRecordExternal: enableBuiltInNS(true)
I/org.webrtc.Logging( 9163): WebRtcAudioEffectsExternal: setNS(true)
I/org.webrtc.Logging( 9163): NetworkMonitor: Start monitoring with native observer 1673512896
I/org.webrtc.Logging( 9163): NetworkMonitorAutoDetect: Network becomes available: 100
D/FlutterWebRTCPlugin( 9163): onIceGatheringChangeGATHERING
I/flutter ( 9163): Bad state: StreamSink is closed [2021-06-02 17:35:58]
I/flutter ( 9163): #0 _StreamSinkImpl.add (dart:_http/http_impl.dart:632:7)
I/flutter ( 9163): #1 _WebSocketImpl.add (dart:_http/websocket_impl.dart:1223:11)
I/flutter ( 9163): #2 SimpleWebSocket.send (package:insignia_media/src/webrtc/websocket.dart:36:20)
I/flutter ( 9163): #3 Signaling._send (package:insignia_media/src/webrtc/signaling.dart:489:18)
I/flutter ( 9163): #4 Signaling._createOffer (package:insignia_media/src/webrtc/signaling.dart:449:12)

E/MethodChannel#FlutterWebRTC.Method(30101): Failed to handle method call
E/MethodChannel#FlutterWebRTC.Method(30101): java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.Integer.intValue()' on a null object reference
E/MethodChannel#FlutterWebRTC.Method(30101): at com.cloudwebrtc.webrtc.MethodCallHandlerImpl.onMethodCall(MethodCallHandlerImpl.java:410)
E/MethodChannel#FlutterWebRTC.Method(30101): at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:233)
E/MethodChannel#FlutterWebRTC.Method(30101): at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:85)
E/MethodChannel#FlutterWebRTC.Method(30101): at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:818)
E/MethodChannel#FlutterWebRTC.Method(30101): at android.os.MessageQueue.nativePollOnce(Native Method)
E/MethodChannel#FlutterWebRTC.Method(30101): at android.os.MessageQueue.next(MessageQueue.java:323)
E/MethodChannel#FlutterWebRTC.Method(30101): at android.os.Looper.loop(Looper.java:136)
E/MethodChannel#FlutterWebRTC.Method(30101): at android.app.ActivityThread.main(ActivityThread.java:6165)
E/MethodChannel#FlutterWebRTC.Method(30101): at java.lang.reflect.Method.invoke(Native Method)
E/MethodChannel#FlutterWebRTC.Method(30101): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:888)
E/MethodChannel#FlutterWebRTC.Method(30101): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:778)
E/MethodChannel#FlutterWebRTC.Method(30101): Failed to handle method call
E/MethodChannel#FlutterWebRTC.Method(30101): java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.Integer.intValue()' on a null object reference
E/MethodChannel#FlutterWebRTC.Method(30101): at com.cloudwebrtc.webrtc.MethodCallHandlerImpl.onMethodCall(MethodCallHandlerImpl.java:410)
E/MethodChannel#FlutterWebRTC.Method(30101): at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:233)
E/MethodChannel#FlutterWebRTC.Method(30101): at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:85)
E/MethodChannel#FlutterWebRTC.Method(30101): at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:818)
E/MethodChannel#FlutterWebRTC.Method(30101): at android.os.MessageQueue.nativePollOnce(Native Method)
E/MethodChannel#FlutterWebRTC.Method(30101): at android.os.MessageQueue.next(MessageQueue.java:323)
E/MethodChannel#FlutterWebRTC.Method(30101): at android.os.Looper.loop(Looper.java:136)
E/MethodChannel#FlutterWebRTC.Method(30101): at android.app.ActivityThread.main(ActivityThread.java:6165)
E/MethodChannel#FlutterWebRTC.Method(30101): at java.lang.reflect.Method.invoke(Native Method)
E/MethodChannel#FlutterWebRTC.Method(30101): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:888)
E/MethodChannel#FlutterWebRTC.Method(30101): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:778)
I/org.webrtc.Logging(30101): EglRenderer: Duration: 4003 ms. Frames received: 0. Dropped: 0. Rendered: 0. Render fps: ,0. Average render time: NA. Average swapBuffer time: NA.

  • Flutter version:
    [√] Flutter (Channel stable, 2.0.6, on Microsoft Windows [versão 10.0.19042.985], locale pt-BR)
    • Flutter version 2.0.6 at C:\src\flutter
    • Framework revision 1d9032c7e1 (5 weeks ago), 2021-04-29 17:37:58 -0700
    • Engine revision 05e680e202
    • Dart version 2.12.3

[√] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
• Android SDK at C:\Users\pulst\AppData\Local\Android\Sdk
• Platform android-30, build-tools 30.0.3
• ANDROID_HOME = C:\Users\pulst\AppData\Local\Android\Sdk
• Java binary at: C:\Program Files\Android Studio\jre\bin\java
• Java version OpenJDK Runtime Environment (build 11.0.8+10-b944.6842174)
• All Android licenses accepted.

[√] Chrome - develop for the web
• Chrome at C:\Program Files (x86)\Google\Chrome\Application\chrome.exe

[X] Visual Studio - develop for Windows
X Visual Studio not installed; this is necessary for Windows development.
Download at https://visualstudio.microsoft.com/downloads/.
Please install the "Desktop development with C++" workload, including all of its default components

[√] Android Studio (version 4.1.0)
• Android Studio at C:\Program Files\Android Studio
• 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 11.0.8+10-b944.6842174)

[√] Connected device (5 available)
• Vivo XI (mobile) • PRUCHYWGG6HYSK4H • android-arm64 • Android 9 (API 28)
• Moto X Play (mobile) • ZY223DPJLM • android-arm • Android 7.1.1 (API 25)
• Windows (desktop) • windows • windows-x64 • Microsoft Windows [versão 10.0.19042.985]
• Chrome (web) • chrome • web-javascript • Google Chrome 90.0.4430.212
• Edge (web) • edge • web-javascript • Microsoft Edge 90.0.818.56

! Doctor found issues in 1 category.

  • Plugin version: 0.6.4
  • OS: Android
  • OS version: 9.0
@SteveFunso
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You'll have to create a turn server (refer to this implementing flutterwebrtc and create a turn server ) then update the ice servers configuration in the signaling.dart file of the client code.
58B6

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