fix: 修复了国内配置一些模型不可用问题 (#7685)

* fix: 修复了国内配置一些模型不可用问题

1. 常见的openai和anthropic协议，如 智谱的codingpan
https://open.bigmodel.cn/api/coding/paas/v4
2. 新出的一些没有模型列表的自定义模型提供商，如科大讯飞
https://maas-coding-api.cn-huabei-1.xf-yun.com/v2

* feat: 提高代码复用性

* fix(network): reuse shared SSL context

* test(network): cover proxy and header forwarding

* fix(network): support verify overrides

---------

Co-authored-by: Taois <taoist.han@vertechs.com>
Co-authored-by: 邹永赫 <1259085392@qq.com>

Author: 3 people

astrbot/core/provider/sources/anthropic_source.py

@@ -18,6 +18,7 @@
 from astrbot.core.provider.func_tool_manager import ToolSet
 from astrbot.core.utils.io import download_image_by_url
 from astrbot.core.utils.network_utils import (
+    create_proxy_client,
     is_connection_error,
     log_connection_failure,
 )
@@ -106,15 +107,13 @@ def _init_api_key(self, provider_config: dict) -> None:
             http_client=self._create_http_client(provider_config),
         )
 
-    def _create_http_client(self, provider_config: dict) -> httpx.AsyncClient | None:
-        """创建带代理的 HTTP 客户端"""
-        proxy = provider_config.get("proxy", "")
-        if proxy:
-            logger.info(f"[Anthropic] 使用代理: {proxy}")
-            return httpx.AsyncClient(proxy=proxy, headers=self.custom_headers)
-        if self.custom_headers:
-            return httpx.AsyncClient(headers=self.custom_headers)
-        return None
+    def _create_http_client(self, provider_config: dict) -> httpx.AsyncClient:
+        """创建带代理的 HTTP 客户端，使用系统 SSL 证书"""
+        return create_proxy_client(
+            "Anthropic",
+            provider_config.get("proxy", ""),
+            headers=self.custom_headers,
+        )
 
     def _apply_thinking_config(self, payloads: dict) -> None:
         thinking_type = self.thinking_config.get("type", "")

astrbot/core/provider/sources/openai_source.py

@@ -438,7 +438,7 @@ async def _fallback_to_text_only_and_retry(
             image_fallback_used,
         )
 
-    def _create_http_client(self, provider_config: dict) -> httpx.AsyncClient | None:
+    def _create_http_client(self, provider_config: dict) -> httpx.AsyncClient:
         """创建带代理的 HTTP 客户端"""
         proxy = provider_config.get("proxy", "")
         return create_proxy_client("OpenAI", proxy)

astrbot/core/utils/network_utils.py

@@ -1,9 +1,13 @@
 """Network error handling utilities for providers."""
 
+import ssl
+
 import httpx
 
 from astrbot import logger
 
+_SYSTEM_SSL_CTX = ssl.create_default_context()
+
 
 def is_connection_error(exc: BaseException) -> bool:
     """Check if an exception is a connection/network related error.
@@ -83,20 +87,30 @@ def log_connection_failure(
 def create_proxy_client(
     provider_label: str,
     proxy: str | None = None,
-) -> httpx.AsyncClient | None:
+    headers: dict[str, str] | None = None,
+    verify: ssl.SSLContext | str | bool | None = None,
+) -> httpx.AsyncClient:
     """Create an httpx AsyncClient with proxy configuration if provided.
 
+    Uses the system SSL certificate store instead of certifi, which avoids
+    SSL verification failures for endpoints whose CA chain is not in certifi
+    but is trusted by the operating system.
+
     Note: The caller is responsible for closing the client when done.
     Consider using the client as a context manager or calling aclose() explicitly.
 
     Args:
         provider_label: The provider name for log prefix (e.g., "OpenAI", "Gemini")
         proxy: The proxy address (e.g., "http://127.0.0.1:7890"), or None/empty
+        headers: Optional custom headers to include in every request
+        verify: Optional override for TLS verification. Defaults to the shared
+            system SSL context when not provided.
 
     Returns:
-        An httpx.AsyncClient configured with the proxy, or None if no proxy
+        An httpx.AsyncClient created with the shared system SSL context; the proxy is applied only if one is provided.
     """
+    resolved_verify = _SYSTEM_SSL_CTX if verify is None else verify
     if proxy:
         logger.info(f"[{provider_label}] 使用代理: {proxy}")
-        return httpx.AsyncClient(proxy=proxy)
-    return None
+        return httpx.AsyncClient(proxy=proxy, verify=resolved_verify, headers=headers)
+    return httpx.AsyncClient(verify=resolved_verify, headers=headers)

tests/unit/test_network_utils.py

@@ -0,0 +1,51 @@
+import ssl
+
+import pytest
+
+from astrbot.core.utils import network_utils
+
+
+def test_create_proxy_client_reuses_shared_ssl_context(
+    monkeypatch: pytest.MonkeyPatch,
+):
+    captured_calls: list[dict] = []
+    headers = {"X-Test-Header": "value"}
+
+    class _FakeAsyncClient:
+        def __init__(self, **kwargs):
+            captured_calls.append(kwargs)
+
+    monkeypatch.setattr(network_utils.httpx, "AsyncClient", _FakeAsyncClient)
+
+    network_utils.create_proxy_client("OpenAI")
+    network_utils.create_proxy_client("OpenAI", proxy="http://127.0.0.1:7890")
+    network_utils.create_proxy_client("OpenAI", headers=headers)
+    network_utils.create_proxy_client("OpenAI", proxy="")
+
+    assert len(captured_calls) == 4
+    assert "proxy" not in captured_calls[0]
+    assert captured_calls[1]["proxy"] == "http://127.0.0.1:7890"
+    assert captured_calls[2]["headers"] is headers
+    assert "proxy" not in captured_calls[3]
+    assert isinstance(captured_calls[0]["verify"], ssl.SSLContext)
+    assert captured_calls[0]["verify"] is captured_calls[1]["verify"]
+    assert captured_calls[1]["verify"] is captured_calls[2]["verify"]
+    assert captured_calls[2]["verify"] is captured_calls[3]["verify"]
+
+
+def test_create_proxy_client_allows_verify_override(
+    monkeypatch: pytest.MonkeyPatch,
+):
+    captured_calls: list[dict] = []
+    custom_verify = ssl.create_default_context()
+
+    class _FakeAsyncClient:
+        def __init__(self, **kwargs):
+            captured_calls.append(kwargs)
+
+    monkeypatch.setattr(network_utils.httpx, "AsyncClient", _FakeAsyncClient)
+
+    network_utils.create_proxy_client("OpenAI", verify=custom_verify)
+
+    assert len(captured_calls) == 1
+    assert captured_calls[0]["verify"] is custom_verify