fix(agent): 外部Dify Agent 手动跟随http->https 301重定向并保持POST(测试连接+运行期);qihuyun.com直连
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@@ -146,6 +146,9 @@ def _proxy_for_url(url: str) -> str | None:
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host = (urlparse(url).hostname or "").lower()
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if "agnes-ai.com" in host or "agnes-ai.space" in host:
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return None
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# 平台自有域名(含自建 Dify/n8n 等)必须直连，不经出网代理。
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if "qihuyun.com" in host:
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return None
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return _outbound_proxy()
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@@ -352,52 +355,73 @@ async def _call_dify_agent(endpoint: str, api_key: str, query: str,
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new_conv_id = ext_conv_id
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err_msg = None
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wf_outputs = None
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async with httpx.AsyncClient(timeout=180, proxy=_proxy_for_url(url), trust_env=False) as client:
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async with client.stream("POST", url, headers=headers, json=payload) as resp:
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if resp.status_code != 200:
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body = (await resp.aread()).decode("utf-8", "replace")
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raise RuntimeError(f"Dify HTTP {resp.status_code}: {body[:300]}")
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async for line in resp.aiter_lines():
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if not line:
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# httpx 默认 follow_redirects=False；stream POST 若遇 301/302 会直接返回该状态码。
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# 且 httpx 自动跟随会把 POST 降级为 GET(对 /v1/chat-messages 变 405)。
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# 因此手动跟随 301/302/307/308，保持 POST 与请求体不变(最多 4 跳)。
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async with httpx.AsyncClient(timeout=180, proxy=_proxy_for_url(url), trust_env=False,
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follow_redirects=False) as client:
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cur_url = url
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for _redir in range(4):
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async with client.stream("POST", cur_url, headers=headers, json=payload) as resp:
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if resp.status_code in (301, 302, 307, 308):
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loc = resp.headers.get("location") or resp.headers.get("Location")
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await resp.aclose()
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if not loc:
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raise RuntimeError(f"Dify HTTP {resp.status_code}: 缺少重定向地址")
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# 处理相对地址
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if loc.startswith("/"):
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from urllib.parse import urlsplit, urlunsplit
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p = urlsplit(cur_url)
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loc = urlunsplit((p.scheme, p.netloc, loc, "", ""))
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cur_url = loc
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continue
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line = line.strip()
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if not line.startswith("data:"):
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continue
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data_str = line[5:].strip()
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if not data_str or data_str == "[DONE]":
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continue
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try:
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evt = json.loads(data_str)
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except Exception:
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continue
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ev = evt.get("event")
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if evt.get("conversation_id"):
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new_conv_id = evt["conversation_id"]
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data = evt.get("data") or {}
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# 兼容三类 Dify 应用：
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# 1) Chat/Agent 应用: message / agent_message 事件带增量 answer
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# 2) Chatflow/Workflow 应用: text_chunk 事件带 data.text；
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# 结束时 workflow_finished 带 status / outputs / error
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if ev in ("message", "agent_message"):
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answer_parts.append(evt.get("answer", "") or "")
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elif ev == "message_replace":
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# 内容审查替换：以替换后的完整 answer 为准
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answer_parts = [evt.get("answer", "") or ""]
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elif ev == "text_chunk":
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answer_parts.append((data.get("text") or ""))
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elif ev == "node_finished":
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# answer / end 节点的 outputs 可能含最终文本
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if data.get("node_type") in ("answer", "end") and data.get("outputs"):
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wf_outputs = data.get("outputs")
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if data.get("status") == "failed" and data.get("error"):
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err_msg = str(data.get("error"))
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elif ev == "workflow_finished":
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if data.get("status") == "failed":
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err_msg = str(data.get("error") or "Dify 工作流执行失败")
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elif data.get("outputs"):
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wf_outputs = data.get("outputs")
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elif ev == "error":
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err_msg = evt.get("message") or evt.get("code") or "Dify 流式返回错误"
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if resp.status_code != 200:
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body = (await resp.aread()).decode("utf-8", "replace")
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raise RuntimeError(f"Dify HTTP {resp.status_code}: {body[:300]}")
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async for line in resp.aiter_lines():
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if not line:
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continue
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line = line.strip()
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if not line.startswith("data:"):
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continue
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data_str = line[5:].strip()
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if not data_str or data_str == "[DONE]":
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continue
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try:
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evt = json.loads(data_str)
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except Exception:
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continue
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ev = evt.get("event")
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if evt.get("conversation_id"):
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new_conv_id = evt["conversation_id"]
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data = evt.get("data") or {}
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# 兼容三类 Dify 应用：
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# 1) Chat/Agent 应用: message / agent_message 事件带增量 answer
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# 2) Chatflow/Workflow 应用: text_chunk 事件带 data.text；
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# 结束时 workflow_finished 带 status / outputs / error
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if ev in ("message", "agent_message"):
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answer_parts.append(evt.get("answer", "") or "")
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elif ev == "message_replace":
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# 内容审查替换：以替换后的完整 answer 为准
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answer_parts = [evt.get("answer", "") or ""]
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elif ev == "text_chunk":
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answer_parts.append((data.get("text") or ""))
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elif ev == "node_finished":
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# answer / end 节点的 outputs 可能含最终文本
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if data.get("node_type") in ("answer", "end") and data.get("outputs"):
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wf_outputs = data.get("outputs")
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if data.get("status") == "failed" and data.get("error"):
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err_msg = str(data.get("error"))
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elif ev == "workflow_finished":
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if data.get("status") == "failed":
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err_msg = str(data.get("error") or "Dify 工作流执行失败")
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elif data.get("outputs"):
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wf_outputs = data.get("outputs")
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elif ev == "error":
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err_msg = evt.get("message") or evt.get("code") or "Dify 流式返回错误"
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break
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else:
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raise RuntimeError("Dify 重定向次数过多(>4)，请直接填写重定向后的地址")
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answer = "".join(answer_parts).strip()
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# 流式无增量文本时，尝试从 workflow 结束 outputs 兜底提取
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if not answer and wf_outputs:
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