do something a bit silly

reflex/.templates/web/utils/state.js

@@ -3,6 +3,7 @@ import axios from "axios";
 import io from "socket.io-client";
 import JSON5 from "json5";
 import env from "$/env.json";
+import reflexEnvironment from "$/reflex.json";
 import Cookies from "universal-cookie";
 import { useEffect, useRef, useState } from "react";
 import Router, { useRouter } from "next/router";
@@ -407,7 +408,7 @@ export const connect = async (
   socket.current = io(endpoint.href, {
     path: endpoint["pathname"],
     transports: transports,
-    protocols: [env.REFLEX_VERSION],
+    protocols: env.TEST_MODE ? undefined : [reflexEnvironment.version],
     autoUnref: false,
   });
   // Ensure undefined fields in events are sent as null instead of removed

reflex/utils/build.py

@@ -21,7 +21,7 @@ def set_env_json():
         str(prerequisites.get_web_dir() / constants.Dirs.ENV_JSON),
         {
             **{endpoint.name: endpoint.get_url() for endpoint in constants.Endpoint},
-            "REFLEX_VERSION": constants.Reflex.VERSION,
+            "TEST_MODE": os.environ.get("PYTEST_CURRENT_TEST", False),
         },
     )