fix dispose triggering onDispose twice

lib/src/support/websocket/io.dart

@@ -22,23 +22,24 @@ class LiveKitWebSocketIO implements LiveKitWebSocket {
   ]) {
     _subscription = _ws.listen(
       (dynamic data) => options?.onData?.call(data),
-      onDone: () => dispose(),
+      onDone: () async {
+        await _subscription.cancel();
+        options?.onDispose?.call();
+      },
     );
   }
 
   @override
   Future<void> dispose() async {
-    await _subscription.cancel();
-    await _ws.close();
-    options?.onDispose?.call();
+    if (_ws.readyState != io.WebSocket.closed) {
+      await _ws.close();
+    }
   }
 
   @override
   void send(List<int> data) {
-    // 0 CONNECTING, 1 OPEN, 2 CLOSING, 3 CLOSED
-    if (_ws.readyState != 1) {
-      logger.fine(
-          '[$objectId] Tried to send data (readyState: ${_ws.readyState})');
+    if (_ws.readyState != io.WebSocket.open) {
+      logger.fine('[$objectId] Socket not open (state: ${_ws.readyState})');
       return;
     }
 

lib/src/support/websocket/web.dart

@@ -27,7 +27,11 @@ class LiveKitWebSocketWeb implements LiveKitWebSocket {
       dynamic _data = _.data is ByteBuffer ? _.data.asUint8List() : _.data;
       options?.onData?.call(_data);
     });
-    _closeSubscription = _ws.onClose.listen((_) => dispose());
+    _closeSubscription = _ws.onClose.listen((_) async {
+      await _messageSubscription.cancel();
+      await _closeSubscription.cancel();
+      options?.onDispose?.call();
+    });
   }
 
   @override
@@ -35,10 +39,9 @@ class LiveKitWebSocketWeb implements LiveKitWebSocket {
 
   @override
   Future<void> dispose() async {
-    options?.onDispose?.call();
-    await _messageSubscription.cancel();
-    await _closeSubscription.cancel();
-    _ws.close();
+    if (_ws.readyState != html.WebSocket.CLOSED) {
+      _ws.close();
+    }
   }
 
   static Future<LiveKitWebSocketWeb> connect(