Java 업비트 웹소켓 송수신 질문드려요.

Question

안녕하세요, java springboot로 업비트 웹소켓 연결을 하려고 하고 있습니다.업비트에서 요구하는 요청값을 잘 보내고 있는거 같은데 아무런 수신값이 넘어오지가 않네요 ㅠㅠ왜 그럴까요? ㅠㅠ아래 코드 공유 하겠습니다.서비스&#64;Service &#64;RequiredArgsConstructor public class UpbitWebSocketService implements WebSocketAction { private final String serverURL &#61; &#34;wss://api.upbit.com/websocket/v1&#34;; public void connectWebSocket() throws IOException { /String token &#61; upbitJwt.createJwtToken(null);/ HttpClient client &#61; HttpClient.newHttpClient(); WebSocket.Builder builder &#61; client.newWebSocketBuilder(); /.header(&#34;Authorization&#34;, &#34;Bearer&#34; &#43; token);/ builder.buildAsync(URI.create(serverURL), new UpbitWebSocketListener(this)).join(); } public void subscribe(WebSocket webSocket) { JsonArray codes &#61; new JsonArray(); codes.add(&#34;KRW-BTC&#34;); JsonObject ticker &#61; new JsonObject(); ticker.addProperty(&#34;type&#34;, &#34;ticker&#34;); ticker.add(&#34;codes&#34;, codes); ticker.addProperty(&#34;isOnlyRealtime&#34;, true); JsonObject ticket &#61; new JsonObject(); ticket.addProperty(&#34;ticket&#34;, &#34;test&#34;); JsonObject format &#61; new JsonObject(); format.addProperty(&#34;format&#34;, &#34;DEFAULT&#34;); JsonArray subscribeArray &#61; new JsonArray(); subscribeArray.add(ticket); subscribeArray.add(ticker); subscribeArray.add(format); System.out.println(subscribeArray.toString()); webSocket.sendText(subscribeArray.toString(), true); } }리스너public class UpbitWebSocketListener implements WebSocket.Listener { private final WebSocketAction action; public UpbitWebSocketListener(WebSocketAction action) { this.action &#61; action; } &#64;Override public void onOpen(WebSocket webSocket) { System.out.println(&#34;웹소켓 시작 &#34; &#43; webSocket.getSubprotocol()); WebSocket.Listener.super.onOpen(webSocket); action.subscribe(webSocket); webSocket.request(1); } &#64;Override public CompletionStage<?> onText(WebSocket webSocket, CharSequence data, boolean last) { System.out.println(&#34;웹소켓 수신 &#34; &#43; data); if (last) { webSocket.request(1); } return WebSocket.Listener.super.onText(webSocket, data, last); } &#64;Override public void onError(WebSocket webSocket, Throwable error) { System.out.println(&#34;웹소켓 시작 오류 &#34; &#43; webSocket.toString()); WebSocket.Listener.super.onError(webSocket, error); } } 현재 요청값 [{&#34;ticket&#34;:&#34;test&#34;},{&#34;type&#34;:&#34;ticker&#34;,&#34;codes&#34;:[&#34;KRW-BTC&#34;],&#34;isOnlyRealtime&#34;:true},{&#34;format&#34;:&#34;DEFAULT&#34;}] onOpen은 연결되서 웹소켓 시작이라고 콘솔창에 뜨는데 수신이 전혀 안되네요 ㅠㅠ

Java 업비트 웹소켓 송수신 질문드려요.

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