Fix proxies error with robust client initialization and httpx fallback

app.py

@@ -101,8 +101,34 @@ def process_message(message, history, system_prompt, temperature, max_tokens, to
     
     # 创建客户端并调用API
     try:
-        client = OpenAI(api_key=STEP_API_KEY, base_url=BASE_URL)
-        print("[DEBUG] Client created successfully")
+        # 清除所有可能的代理环境变量
+        import os
+        proxy_vars = ['HTTP_PROXY', 'HTTPS_PROXY', 'http_proxy', 'https_proxy', 
+                      'ALL_PROXY', 'all_proxy', 'NO_PROXY', 'no_proxy']
+        for var in proxy_vars:
+            if var in os.environ:
+                del os.environ[var]
+                print(f"[DEBUG] Removed {var} from environment")
+        
+        # 尝试创建客户端
+        try:
+            # 方法1：直接创建
+            client = OpenAI(api_key=STEP_API_KEY, base_url=BASE_URL)
+            print("[DEBUG] Client created successfully (method 1)")
+        except TypeError as e:
+            if 'proxies' in str(e):
+                print(f"[DEBUG] Method 1 failed with proxy error, trying method 2")
+                # 方法2：使用httpx客户端
+                import httpx
+                http_client = httpx.Client(trust_env=False)
+                client = OpenAI(
+                    api_key=STEP_API_KEY, 
+                    base_url=BASE_URL,
+                    http_client=http_client
+                )
+                print("[DEBUG] Client created successfully (method 2)")
+            else:
+                raise e
         
         print("[DEBUG] Calling API...")
         response = client.chat.completions.create(

requirements.txt

@@ -1,3 +1,4 @@
 gradio==4.19.2
 openai==1.12.0
-Pillow==10.2.0
+Pillow==10.2.0
+httpx>=0.24.0