pingInterval property

@override Duration? get pingInterval

The interval at which ping frames are sent to keep the web-socket connection alive.

If null, no ping messages are sent.

Implementation

@override
Duration? get pingInterval => _pingInterval;

@override set pingInterval (Duration? value)

The interval at which ping frames are sent to keep the web-socket connection alive.

If null, no ping messages are sent.

Implementation

@override
set pingInterval(Duration? value) {
  _pingInterval = value;
  _pingTimer?.cancel();
  _pingTimer = null;
  _pongPending = false;
  if (value == null || _closeSent) return;
  _pingTimer = Timer.periodic(value, (_) {
    if (!pingAnswered()) {
      goAway(1001, '');
      onPeerUnresponsive();
      return;
    }
    _pongPending = true;
    onPing();
    sendFrame(WebSocketOpcode.ping, Uint8List(0));
  });
}