Fix Socket.IO client fallback order

tests/test_websocket_client_transport.py

@@ -0,0 +1,8 @@
+from pathlib import Path
+
+
+def test_websocket_client_prefers_polling_before_websocket():
+    script_path = Path(__file__).resolve().parents[1] / "webui" / "static" / "script.js"
+    script = script_path.read_text()
+
+    assert "transports: ['polling', 'websocket']" in script

webui/static/script.js

@@ -274,7 +274,7 @@ function initializeWebSocket() {
     }
 
     socket = io({
-        transports: ['websocket', 'polling'],
+        transports: ['polling', 'websocket'],
         reconnection: true,
         reconnectionAttempts: Infinity,
         reconnectionDelay: 1000,