diff --git a/packages/hydrooj/src/handler/connection.ts b/packages/hydrooj/src/handler/connection.ts
index 6dc333dce..f9e01b6f1 100644
--- a/packages/hydrooj/src/handler/connection.ts
+++ b/packages/hydrooj/src/handler/connection.ts
@@ -45,12 +45,6 @@ class WebsocketEventsConnectionManagerHandler extends ConnectionHandler {
     }
 
     async message(payload: any) {
-        try {
-            payload = JSON.parse(payload);
-        } catch (e) {
-            console.error('Invalid payload', e);
-            return;
-        }
         const success = [];
         const failed = [];
         const session = payload?.credential
diff --git a/packages/ui-default/components/message/index.page.ts b/packages/ui-default/components/message/index.page.ts
index 2c45b18a9..04c580b69 100644
--- a/packages/ui-default/components/message/index.page.ts
+++ b/packages/ui-default/components/message/index.page.ts
@@ -59,14 +59,14 @@ const onmessage = (msg) => {
   return true;
 };
 
-const initWorkerMode = (endpoint) => {
+const initWorkerMode = () => {
   console.log('Messages: using SharedWorker');
   const worker = new SharedWorker(new URL('./worker.ts', import.meta.url), { name: 'HydroMessagesWorker' });
   worker.port.start();
   window.addEventListener('beforeunload', () => {
     worker.port.postMessage({ type: 'unload' });
   });
-  worker.port.postMessage({ type: 'conn', path: endpoint, cookie: document.cookie });
+  worker.port.postMessage({ type: 'conn', cookie: document.cookie });
   worker.port.onmessage = async (message) => {
     if (process.env.NODE_ENV !== 'production') console.log('onmessage: ', message);
     const { payload, type } = message.data;
@@ -89,13 +89,11 @@ const messagePage = new AutoloadPage('messagePage', (pagename) => {
       action: () => window.open('/home/messages', '_blank'),
     }).show();
   }
-  const url = new URL(`${UiContext.ws_prefix}home/messages-conn`, window.location.href);
-  // TODO handle a better way for cookie
-  if (url.host !== window.location.host) url.searchParams.append('sid', document.cookie.split('sid=')[1].split(';')[0]);
+  const url = new URL(`${UiContext.ws_prefix}websocket`, window.location.href);
   const endpoint = url.toString().replace('http', 'ws');
   if (window.SharedWorker) {
     try {
-      initWorkerMode(endpoint);
+      initWorkerMode();
       return;
     } catch (e) {
       console.error('SharedWorker init fail: ', e.message);
@@ -129,6 +127,14 @@ const messagePage = new AutoloadPage('messagePage', (pagename) => {
     localStorage.setItem('page.master', selfId);
     const masterChannel = new BroadcastChannel('hydro-messages');
     const sock = new Sock(endpoint);
+    sock.onopen = () => {
+      sock.send(JSON.stringify({
+        operation: 'subscribe',
+        request_id: Math.random().toString(16).substring(2),
+        credential: document.cookie.split('sid=')[1].split(';')[0],
+        channels: ['message'],
+      }));
+    };
     sock.onmessage = async (message) => {
       const payload = JSON.parse(message.data);
       masterChannel.postMessage({ type: 'message', payload });
diff --git a/packages/ui-default/components/message/worker.ts b/packages/ui-default/components/message/worker.ts
index c553133a9..24b6377f7 100644
--- a/packages/ui-default/components/message/worker.ts
+++ b/packages/ui-default/components/message/worker.ts
@@ -13,7 +13,6 @@ const ports: Set<MessagePort> = new Set();
 interface RequestInitSharedConnPayload {
   type: 'conn';
   cookie: string;
-  path: string;
 }
 interface RequestAckPayload {
   type: 'ack';
@@ -53,19 +52,22 @@ function onMessage(payload: any) {
   }, 5000);
 }
 
-function initConn(path: string, port: MessagePort, cookie: any) {
+function initConn(port: MessagePort, cookie: any) {
   ports.add(port);
-  if (cookie !== lcookie) conn?.close();
-  else if (conn && conn.readyState === conn.OPEN) return;
-  const url = new URL(path, location.origin);
-  if (cookie) url.searchParams.set('sid', cookie.split('sid=')[1].split(';')[0]);
-  lcookie = cookie;
-  console.log('Init connection for', path);
-  conn?.close();
-  conn = new ReconnectingWebsocket(url.toString());
+  console.log('Init connection');
+  lcookie = cookie.split('sid=')[1].split(';')[0];
+  if (conn) return;
+  const url = new URL('/websocket', location.origin);
+  conn = new ReconnectingWebsocket(url.toString().replace('http', 'ws'));
   conn.onopen = () => {
-    console.log('Connected to', path);
+    console.log('Connected');
     broadcastMsg({ type: 'open' });
+    conn.send(JSON.stringify({
+      'operation': 'subscribe',
+      'request_id': Math.random().toString(16).substring(2),
+      'credential': lcookie,
+      'channels': ['message'],
+    }));
   };
   conn.onerror = () => broadcastMsg({ type: 'error' });
   conn.onclose = (ev) => broadcastMsg({ type: 'close', error: ev.reason });
@@ -79,8 +81,8 @@ function initConn(path: string, port: MessagePort, cookie: any) {
     if (['PermissionError', 'PrivilegeError'].includes(payload.error)) {
       broadcastMsg({ type: 'close', error: payload.error });
       conn.close();
-    } else {
-      onMessage(payload);
+    } else if (payload.operation === 'event') {
+      onMessage(payload.payload);
     }
   };
 }
@@ -89,7 +91,7 @@ self.onconnect = function (e) {
   const port = e.ports[0];
 
   port.addEventListener('message', (msg: { data: RequestPayload }) => {
-    if (msg.data.type === 'conn') initConn(msg.data.path, port, msg.data.cookie);
+    if (msg.data.type === 'conn') initConn(port, msg.data.cookie);
     if (msg.data.type === 'ack') ack[msg.data.id]?.();
     if (msg.data.type === 'unload') ports.delete(port);
   });