Fix server hang: stop CTP reconnect storm and throttle live account polling.

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

modules/ctp/ctp_premarket_connect.py

@@ -18,7 +18,7 @@ from modules.market.market_sessions import (
     is_trading_session,
     should_keep_ctp_connected,
 )
-from modules.ctp.vnpy_bridge import ctp_start_connect, ctp_status, ctp_session_needs_reconnect
+from modules.ctp.vnpy_bridge import ctp_start_connect, ctp_status, ctp_session_needs_reconnect, get_bridge
 
 logger = logging.getLogger(__name__)
 
@@ -114,6 +114,7 @@ def start_ctp_premarket_connect_worker(
                             or is_trading_session()
                         )
                         and ctp_session_needs_reconnect(mode)
+                        and not get_bridge().connect_in_progress()
                     ):
                         info = ctp_start_connect(mode, force=True, scheduled=True)
                         if info.get("started") or info.get("connecting"):

modules/ctp/vnpy_bridge.py

@@ -2904,27 +2904,27 @@ def ctp_start_connect(mode: str, *, force: bool = False, scheduled: bool = False
 
 
 def ctp_session_needs_reconnect(mode: str) -> bool:
-    """连接看似在线但不可交易、无资金回报或会话过旧时需强制重连。"""
+    """连接看似在线但不可交易或会话过旧时需强制重连（连接进行中不重复发起）。"""
     if _use_ctp_worker_client():
         st = ctp_ipc_client.status(mode)
+        if st.get("connecting"):
+            return False
         if not st.get("connected"):
             return True
         if not st.get("td_logged_in"):
             return True
         return False
     b = get_bridge()
+    if b.connect_in_progress():
+        return False
     if b.connected_mode != mode:
         return True
+    since_connect = time.time() - float(getattr(b, "_last_connect_ok_ts", 0) or 0)
+    if since_connect < 120:
+        return False
     if not b._td_logged_in():
         return True
-    age = time.time() - float(getattr(b, "_last_connect_ok_ts", 0) or 0)
+    if since_connect > 3 * 3600:
-    if age > 3 * 3600:
-        return True
-    try:
-        acc = b.get_account()
-        if float(acc.get("balance") or 0) <= 0:
-            return True
-    except Exception:
         return True
     return False
 

modules/trading/install.py

@@ -2955,13 +2955,26 @@ def install_trading(app, *, login_required, require_nav, get_db, get_setting, se
     def recommend_page():
         return redirect(url_for("positions") + "#recommend")
 
+    def _maybe_refresh_live_account(payload: dict, mode: str) -> dict:
+        """轻量刷新权益：快照较新时跳过，避免阻塞 HTTP 线程。"""
+        if not ctp_status(mode).get("connected"):
+            return payload
+        if payload.get("capital") and position_hub.snapshot_age_sec() < 3.0:
+            return payload
+        if not _live_refresh_lock.acquire(blocking=False):
+            return payload
+        try:
+            return _apply_live_account(dict(payload), mode)
+        finally:
+            _live_refresh_lock.release()
+
     @app.route("/api/trading/live")
     @login_required
     def api_trading_live():
         mode = get_trading_mode(get_setting)
         snap = position_hub.get_snapshot()
         if snap:
-            payload = _apply_live_account(dict(snap), mode)
+            payload = _maybe_refresh_live_account(dict(snap), mode)
             return jsonify(_normalize_live_payload(payload))
         payload = _refresh_trading_live_snapshot(fast=True)
         payload = _normalize_live_payload(payload)
@@ -2993,7 +3006,7 @@ def install_trading(app, *, login_required, require_nav, get_db, get_setting, se
                     mode = get_trading_mode(get_setting)
                     yield sse_format(
                         "positions",
-                        _apply_live_account(dict(snap), mode),
+                        _maybe_refresh_live_account(dict(snap), mode),
                     )
                 while True:
                     try:

modules/trading/position_stream.py

@@ -45,6 +45,12 @@ class PositionStreamHub:
         with self._lock:
             return dict(self._snapshot) if self._snapshot else None
 
+    def snapshot_age_sec(self) -> float:
+        with self._lock:
+            if not self._snapshot_ts:
+                return 9999.0
+            return max(0.0, time.time() - self._snapshot_ts)
+
     def set_snapshot(self, data: dict) -> None:
         with self._lock:
             self._snapshot = dict(data)

modules/web/static/js/trade.js

@@ -270,10 +270,10 @@
         posFastPollCount = 0;
         posFastPollTimer = setInterval(function () {
             pollPositions();
-            refreshCtpAccountQuick();
+            if (posFastPollCount % 3 === 0) refreshCtpAccountQuick();
             posFastPollCount += 1;
             if (posFastPollCount >= posFastPollMax) stopPosFastPoll();
-        }, 1000);
+        }, 2000);
     }
 
     function refreshCtpAccountQuick() {
@@ -328,8 +328,8 @@
         if (connected) {
             showCtpError('');
             if (data.sync_state === 'syncing') {
-                posFastPollMax = Math.max(posFastPollMax, 240);
+                posFastPollMax = Math.max(posFastPollMax, 90);
-                if (!posFastPollTimer) startPosFastPoll(240);
+                if (!posFastPollTimer) startPosFastPoll(90);
             }
         } else if (!connecting && data.ctp_status && data.ctp_status.last_error) {
             showCtpError(data.ctp_status.last_error);
@@ -714,7 +714,7 @@
                     showCtpError('');
                     refreshCtpAccountQuick();
                     pollPositions();
-                    startPosFastPoll(180);
+                    startPosFastPoll(60);
                     return d;
                 }
                 if ((st.login_cooldown_sec || 0) > 0 || d.cooldown) {
@@ -724,7 +724,7 @@
                 }
                 if (d.connecting || st.connecting) {
                     updateCtpBadge(false, true);
-                    startPosFastPoll(180);
+                    startPosFastPoll(60);
                     return waitForCtpConnected(70000).then(function (ok) {
                         if (!ok && d.error) showCtpError(d.error);
                         else if (!ok && st.last_error) showCtpError(st.last_error);