From 3becd8ea08064b99f314535457dd3014df8d51e5 Mon Sep 17 00:00:00 2001
From: hmo <staymo7777@gmail.com>
Date: Sat, 15 Aug 2026 16:56:49 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20empty=5Fcontent=20false-positive=20on=20?=
 =?UTF-8?q?reasoning=20models=20=E2=80=94=20deepseek-v4-flash/pro=20return?=
 =?UTF-8?q?=20content=20in=20reasoning=5Fcontent;=20only=20treat=20as=20em?=
 =?UTF-8?q?pty=20when=20no=20content=20AND=20no=20reasoning=20AND=20not=20?=
 =?UTF-8?q?finish=5Freason=3Dlength?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 gateway/scripts/ocg_router.py | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/gateway/scripts/ocg_router.py b/gateway/scripts/ocg_router.py
index dbea9e0..741320e 100644
--- a/gateway/scripts/ocg_router.py
+++ b/gateway/scripts/ocg_router.py
@@ -612,10 +612,21 @@ class RouterHandler(BaseHTTPRequestHandler):
                     try:
                         import json as _json
                         d = _json.loads(resp_body.decode("utf-8", errors="replace"))
-                        content = d.get("choices", [{}])[0].get("message", {}).get("content", "")
-                        if not content or not str(content).strip():
-                            log.warning("empty content detected via key, retrying next key")
-                            return {"ok": False, "status": 0, "error": "empty_content"}
+                        msg = d.get("choices", [{}])[0].get("message", {}) or {}
+                        content = msg.get("content", "")
+                        # 推理模型（deepseek-v4-flash/pro 等）回复在 reasoning_content，
+                        # content 可能为空（尤其 max_tokens 小时 token 全用于推理）——
+                        # 有 reasoning_content 或 finish_reason=length 都视为正常，不算空输出
+                        reasoning = msg.get("reasoning_content", "")
+                        finish_reason = d.get("choices", [{}])[0].get("finish_reason", "")
+                        has_reasoning = bool(reasoning and str(reasoning).strip())
+                        if (not content or not str(content).strip()) and not has_reasoning:
+                            if finish_reason == "length":
+                                # max_tokens 截断，content 可能为空但属于正常响应
+                                log.warning("content empty but finish_reason=length (truncated), passing through")
+                            else:
+                                log.warning("empty content detected via key, retrying next key")
+                                return {"ok": False, "status": 0, "error": "empty_content"}
                     except Exception:
                         pass  # 解析失败不阻断（正常透传）
                 self._send_response(status, dict(resp.headers), resp_body)