WebSocket Ping Interval Raises Bad state: Cannot add event after closing

[putraxor]

WebSocket Ping Interval Raises Bad state: Cannot add event after closing

Source:

    var url = 'wss://stream.binance.com:9443/ws/!miniTicker@arr';
    _webSocket = await WebSocket.connect(url).catchError((e) {
      print('Failed to connect to $url because $e retry in 5 seconds');
    });
    _webSocket?.pingInterval = Duration(minutes: 2);
    _webSocket?.listen((data){
        print(data);
     });

Trace Logs:

#0      _StreamController.add (dart:async/stream_controller.dart:585:24)
#1      _WebSocketConsumer.add (dart:_http/websocket_impl.dart:953:17)
#2      new _WebSocketImpl._fromSocket.<anonymous closure> (dart:_http/websocket_impl.dart:1133:38)
#3      _rootRunUnary (dart:async/zone.dart:1132:38)
#4      _CustomZone.runUnary (dart:async/zone.dart:1029:19)
#5      _CustomZone.runUnaryGuarded (dart:async/zone.dart:931:7)
#6      _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:336:11)
#7      _BufferingStreamSubscription._add (dart:async/stream_impl.dart:263:7)
#8      _SinkTransformerStreamSubscription._add (dart:async/stream_transformers.dart:68:11)
#9      _EventSinkWrapper.add (dart:async/stream_transformers.dart:15:11)
#10     _WebSocketProtocolTransformer._startPayload (dart:_http/websocket_impl.dart:310:24)
#11     _WebSocketProtocolTransformer._lengthDone (dart:_http/websocket_impl.dart:290:7)
#12     _WebSocketProtocolTransformer.add (dart:_http/websocket_impl.dart:194:13)
#13     _SinkTransformerStreamSubscription._handleData (dart:async/stream_transformers.dart:120:24)

This tracker is for issues related to:

• Dart core libraries ("dart:async", "dart:io", etc.)

dart --version
Dart VM version: 2.2.0 (Tue Feb 26 15:04:32 2019 +0100) on "macos_x64"

[zichangg]

I didn't reproduce it locally. It looks like websocket received a ping and tries to response it with a pong but it is closed at that time. Is it easy to reproduce?

[zichangg]

The same issue: #37417