fix: CTP 连接捕获 SimNow 真实报错并增加诊断脚本

显式设置柜台环境=实盘；连接失败时解析 4097/登录拒单；scripts/test_simnow.py 供服务器排查。

Co-authored-by: Cursor <cursoragent@cursor.com>

vnpy_bridge.py

@@ -22,7 +22,7 @@ def _env(key: str, default: str = "") -> str:
 
 
 def _simnow_setting() -> dict[str, str]:
-    """SimNow 7×24 仿真默认前置（可在 .env 覆盖）。"""
+    """SimNow 仿真前置（可在 .env 覆盖）。看穿式前置需「柜台环境=实盘」。"""
     return {
         "用户名": _env("SIMNOW_USER"),
         "密码": _env("SIMNOW_PASSWORD"),
@@ -31,7 +31,7 @@ def _simnow_setting() -> dict[str, str]:
         "行情服务器": _env("SIMNOW_MD_ADDRESS", "tcp://180.168.146.187:10211"),
         "产品名称": _env("SIMNOW_APP_ID", "simnow_client_test"),
         "授权编码": _env("SIMNOW_AUTH_CODE", "0000000000000000"),
-        "产品信息": _env("SIMNOW_PRODUCT_INFO", "simnow_client_test"),
+        "柜台环境": _env("SIMNOW_ENV", "实盘"),
     }
 
 
@@ -44,7 +44,7 @@ def _live_setting() -> dict[str, str]:
         "行情服务器": _env("CTP_LIVE_MD_ADDRESS"),
         "产品名称": _env("CTP_LIVE_APP_ID"),
         "授权编码": _env("CTP_LIVE_AUTH_CODE"),
-        "产品信息": _env("CTP_LIVE_PRODUCT_INFO"),
+        "柜台环境": _env("CTP_LIVE_ENV", "实盘"),
     }
 
 
@@ -56,6 +56,25 @@ def _mode_label(mode: str) -> str:
     return "SimNow 模拟" if mode == "simulation" else "期货公司实盘"
 
 
+def _format_ctp_failure(ctp_logs: list[str]) -> str:
+    """根据 CTP 网关日志拼出可读错误。"""
+    text = "\n".join(ctp_logs)
+    if "4097" in text or "Decrypt handshake" in text or "shake hand" in text.lower():
+        return (
+            "CTP 握手失败(4097)：vnpy_ctp 与 SimNow 前置加密不匹配。"
+            "请执行 pip install -U vnpy vnpy_ctp 后重启，并确认 .env 中 SIMNOW_ENV=实盘"
+        )
+    if "不合法的登录" in text or "密码" in text or "账号" in text:
+        tail = ctp_logs[-1] if ctp_logs else ""
+        return f"CTP 登录被拒：{tail or '请检查投资者代码与密码（快期能否登录）'}"
+    if "连接断开" in text or "disconnect" in text.lower():
+        tail = ctp_logs[-1] if ctp_logs else ""
+        return f"CTP 连接断开：{tail or '请检查前置地址与网络'}"
+    if ctp_logs:
+        return f"CTP 连接失败：{ctp_logs[-1]}"
+    return "CTP 连接超时：未收到柜台回报。请检查 SimNow 账号、前置地址、网络(nc 测端口)，并用快期验证账号"
+
+
 class CtpBridge:
     def __init__(self) -> None:
         self._engine = None
@@ -127,18 +146,42 @@ class CtpBridge:
                 self._connected_mode = None
                 time.sleep(1)
 
-            self._engine.connect(setting, GATEWAY_NAME)
-            # 等待登录与结算信息
-            for _ in range(30):
-                accounts = self._engine.get_all_accounts()
-                if accounts:
-                    self._connected_mode = mode
-                    self._last_error = ""
-                    logger.info("CTP 已连接 [%s] account=%s", mode, len(accounts))
-                    return
-                time.sleep(0.5)
-            self._last_error = "CTP 连接超时，请检查 SimNow 账号、前置地址与交易时段"
-            raise RuntimeError(self._last_error)
+            ctp_logs: list[str] = []
+            from vnpy.trader.event import EVENT_LOG
+
+            def _on_log(event) -> None:
+                msg = getattr(event.data, "msg", "") or str(event.data)
+                if msg:
+                    ctp_logs.append(str(msg))
+                    if len(ctp_logs) > 20:
+                        ctp_logs.pop(0)
+                    logger.info("CTP | %s", msg)
+
+            self._ee.register(EVENT_LOG, _on_log)
+            try:
+                logger.info(
+                    "CTP 连接 [%s] user=%s td=%s env=%s",
+                    mode,
+                    setting.get("用户名"),
+                    setting.get("交易服务器"),
+                    setting.get("柜台环境", "实盘"),
+                )
+                self._engine.connect(setting, GATEWAY_NAME)
+                # 等待登录与结算信息（最多约 30 秒）
+                for _ in range(60):
+                    accounts = self._engine.get_all_accounts()
+                    if accounts:
+                        self._connected_mode = mode
+                        self._last_error = ""
+                        logger.info("CTP 已连接 [%s] account=%s", mode, len(accounts))
+                        return
+                    time.sleep(0.5)
+            finally:
+                self._ee.unregister(EVENT_LOG, _on_log)
+
+            hint = _format_ctp_failure(ctp_logs)
+            self._last_error = hint
+            raise RuntimeError(hint)
 
     def ensure_connected(self, mode: str) -> None:
         if self._connected_mode != mode: