앱 실시간 차트 갱신오류 수정

frontend/src/utils/upbitWsBroker.ts

@@ -3,6 +3,8 @@
  * 훅·차트마다 WebSocket 을 열면 모바일에서 429·재연결 폭주가 발생한다.
  */
 import type { UpbitMessage } from './upbitApi';
+import { isDesktop } from './platform';
+import { getSecureApiOrigin } from './backendApi';
 
 export type UpbitWsChannel = 'ticker' | 'orderbook' | 'trade';
 
@@ -36,6 +38,11 @@ let closingIntentionally = false;
 let wsFailureLogged = false;
 
 function getWsUrl(): string {
+  if (isDesktop()) {
+    const origin = getSecureApiOrigin().replace(/^http:\/\//i, 'https://');
+    const host = origin.replace(/^https:\/\//i, '');
+    return `wss://${host}/upbit-ws`;
+  }
   const proto = window.location.protocol === 'https:' ? 'wss' : 'ws';
   return `${proto}://${window.location.host}/upbit-ws`;
 }