수정

backend/app/services/kis_realtime_stream.py

@@ -474,31 +474,32 @@ class KisRealtimeStream:
                     # WebSocket handshake returned a non-101 HTTP response (often 200)
                     connection_attempts += 1
                     status = getattr(isc, 'status_code', None)
+                    # 진단 로그는 처음 3회만 출력 (로그 도배 방지)
+                    if connection_attempts <= 3:
                         logger.error(f"❌ KIS WS InvalidStatusCode: HTTP {status}")
-                    # Try HTTP GET diagnostic (replace wss:// -> https://)
                         if _httpx is not None:
                             try:
                                 http_url = ws_full_url.replace('wss://', 'https://')
                                 logger.info(f"🔍 Performing HTTP GET diagnostic to {http_url}")
                                 async with _httpx.AsyncClient(timeout=10.0, verify=True) as client:
-                                # include Origin in diagnostic GET if available to mirror websocket handshake
                                     diag_headers = {"User-Agent": "Mozilla/5.0"}
                                     if origin:
                                         diag_headers["Origin"] = origin
                                     resp = await client.get(http_url, headers=diag_headers)
-                                headers_snippet = dict(list(resp.headers.items())[:10])
-                                body_snippet = (resp.text or '')[:1000]
-                                logger.error(f"🔍 Diagnostic HTTP {resp.status_code} headers={headers_snippet} body={body_snippet}")
+                                    body_snippet = (resp.text or '')[:200]
+                                    logger.error(f"🔍 Diagnostic HTTP {resp.status_code} body={body_snippet}")
                             except Exception as diag_exc:
-                            logger.error(f"🔍 Diagnostic HTTP GET failed: {diag_exc}", exc_info=True)
-                    else:
-                        logger.error("🔍 httpx not installed — cannot perform HTTP diagnostic")
-                    # reset ws state and approval_key to attempt re-issue on next loop
+                                logger.error(f"🔍 Diagnostic HTTP GET failed: {diag_exc}")
+                    elif connection_attempts == 4:
+                        logger.warning(
+                            f"⚠️ KIS WS 서버 비정상 (HTTP {status} 반환). "
+                            f"5분 간격으로 재시도합니다. REST API는 정상 동작합니다."
+                        )
+                    # reset ws state
                     self._ws = None
                     self._subscribed_codes.clear()
                     self._approval_key = None
-                    # continue to retry after outer sleep
-                    continue
+                    # outer backoff로 이동 (continue 제거)
 
             except ConnectionClosed as e:
                 connection_attempts += 1