fix: SimNow 登录封禁(错误75)时冷却退避，停止自动重连

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

vnpy_bridge.py

@@ -22,6 +22,8 @@ GATEWAY_NAME = "CTP"
 
 CONNECT_WAIT_SEC = 60
 CONNECT_POLL_INTERVAL_SEC = 0.5
+LOGIN_BAN_COOLDOWN_SEC = 45 * 60
+LOGIN_FAIL_COOLDOWN_SEC = 5 * 60
 
 _position_refresh_callback: Optional[Callable[[], None]] = None
 
@@ -94,6 +96,11 @@ def _format_ctp_failure(ctp_logs: list[str], *, td_address: str = "") -> str:
                 "tcp://180.168.146.187:10201 / 10211，并确认服务器能访问该地址。"
             )
     text = "\n".join(ctp_logs)
+    if "连续登录失败" in text or "登录被禁止" in text or "代码：75" in text:
+        return (
+            "CTP 登录被临时禁止：连续失败次数过多（错误码 75）。"
+            "请等待约 30~60 分钟后再试，先用快期确认投资者代码与密码正确，期间勿反复点「连接」。"
+        )
     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。"
@@ -130,6 +137,7 @@ class CtpBridge:
         self._last_error: str = ""
         self._connect_lock = threading.Lock()
         self._connect_in_progress = False
+        self._login_cooldown_until: float = 0.0
         self._commission_waiters: dict[int, threading.Event] = {}
         self._commission_lists: dict[int, list] = {}
         self._commission_hooked = False
@@ -172,6 +180,33 @@ class CtpBridge:
     def connect_in_progress(self) -> bool:
         return self._connect_in_progress
 
+    def login_cooldown_remaining(self) -> int:
+        """距允许再次登录的剩余秒数。"""
+        remain = int(self._login_cooldown_until - time.monotonic())
+        return max(0, remain)
+
+    def _is_login_cooldown_active(self) -> bool:
+        return self.login_cooldown_remaining() > 0
+
+    def _set_login_cooldown(self, seconds: float) -> None:
+        until = time.monotonic() + max(0.0, seconds)
+        if until > self._login_cooldown_until:
+            self._login_cooldown_until = until
+
+    def _apply_login_failure_cooldown(self, ctp_logs: list[str]) -> None:
+        text = "\n".join(ctp_logs)
+        if "连续登录失败" in text or "登录被禁止" in text or "代码：75" in text:
+            self._set_login_cooldown(LOGIN_BAN_COOLDOWN_SEC)
+        elif any("登录失败" in m or "不合法的登录" in m for m in ctp_logs):
+            self._set_login_cooldown(LOGIN_FAIL_COOLDOWN_SEC)
+
+    def _login_cooldown_message(self) -> str:
+        remain = self.login_cooldown_remaining()
+        return (
+            f"CTP 登录冷却中，请 {remain // 60} 分 {remain % 60} 秒后再试"
+            f"（避免连续失败被 SimNow 封禁）"
+        )
+
     def _close_gateway(self) -> None:
         """关闭 CTP 网关，避免半连接状态下重连卡在「连接登录」。"""
         if not self._engine:
@@ -186,7 +221,11 @@ class CtpBridge:
         time.sleep(0.6)
 
     def _login_rejected(self, ctp_logs: list[str]) -> bool:
-        return any("登录失败" in m or "不合法的登录" in m for m in ctp_logs)
+        return any(
+            kw in m
+            for m in ctp_logs
+            for kw in ("登录失败", "不合法的登录", "登录被禁止", "连续登录失败")
+        )
 
     def _wait_connected(self, mode: str, ctp_logs: list[str] | None = None) -> bool:
         """等待账户回报或交易通道登录成功。"""
@@ -220,6 +259,7 @@ class CtpBridge:
             "mode_label": _mode_label(mode),
             "missing_config": missing,
             "last_error": self._last_error,
+            "login_cooldown_sec": self.login_cooldown_remaining(),
             "broker_id": st.get("经纪商代码", ""),
             "td_address": st.get("交易服务器", ""),
         }
@@ -227,6 +267,10 @@ class CtpBridge:
     def connect(self, mode: str, *, force: bool = False) -> None:
         if self._connect_in_progress:
             raise RuntimeError("CTP 正在连接中，请稍候")
+        if self._is_login_cooldown_active() and not force:
+            msg = self._login_cooldown_message()
+            self._last_error = msg
+            raise RuntimeError(msg)
         if not self._engine:
             raise RuntimeError(self._last_error or "vnpy 引擎未初始化")
         if self._connected_mode == mode and not force:
@@ -305,6 +349,7 @@ class CtpBridge:
                     self._ee.unregister(EVENT_LOG, _on_log)
 
                 self._close_gateway()
+                self._apply_login_failure_cooldown(ctp_logs)
                 hint = _format_ctp_failure(ctp_logs, td_address=setting.get("交易服务器", ""))
                 self._last_error = hint
                 logger.warning("CTP 连接失败 [%s]: %s | logs=%s", mode, hint, ctp_logs[-5:])
@@ -318,6 +363,14 @@ class CtpBridge:
             return {"started": False, "connecting": False, "connected": True}
         if self._connect_in_progress:
             return {"started": False, "connecting": True, "connected": False}
+        if self._is_login_cooldown_active() and not force:
+            self._last_error = self._login_cooldown_message()
+            return {
+                "started": False,
+                "connecting": False,
+                "connected": False,
+                "cooldown": True,
+            }
 
         def _run() -> None:
             try:
@@ -1092,6 +1145,8 @@ def ctp_try_auto_reconnect(mode: str) -> bool:
         return False
     if b.connect_in_progress():
         return False
+    if b.login_cooldown_remaining() > 0:
+        return False
     st = _setting_for_mode(mode)
     if not st.get("用户名") or not st.get("密码") or not st.get("交易服务器"):
         return False