refactor: 重构底层代码，抽离conn，调整消息处理器并创建传输层接口。

feature: 支持mqtt非桥接版本。

main/xiaozhi-server/app.py

@@ -3,11 +3,11 @@ import uuid
 import signal
 import asyncio
 from aioconsole import ainput
-from config.settings import load_config
+from config.config_loader import load_config
 from config.logger import setup_logging
 from core.utils.util import get_local_ip, validate_mcp_endpoint
 from core.http_server import SimpleHttpServer
-from core.websocket_server import WebSocketServer
+from core.xiaozhi_server_facade import XiaozhiServerFacade
 from core.utils.util import check_ffmpeg_installed
 
 TAG = __name__
@@ -57,9 +57,10 @@ async def main():
     # 添加 stdin 监控任务
     stdin_task = asyncio.create_task(monitor_stdin())
 
-    # 启动 WebSocket 服务器
-    ws_server = WebSocketServer(config)
-    ws_task = asyncio.create_task(ws_server.start())
+    # 启动小智服务器门面（支持WebSocket和MQTT）
+    xiaozhi_server = XiaozhiServerFacade(config)
+    xiaozhi_task = asyncio.create_task(xiaozhi_server.start())
+    
     # 启动 Simple http 服务器
     ota_server = SimpleHttpServer(config)
     ota_task = asyncio.create_task(ota_server.start())
@@ -89,24 +90,52 @@ async def main():
             logger.bind(tag=TAG).error("mcp接入点不符合规范")
             config["mcp_endpoint"] = "你的接入点 websocket地址"
 
-    # 获取WebSocket配置，使用安全的默认值
-    websocket_port = 8000
-    server_config = config.get("server", {})
-    if isinstance(server_config, dict):
-        websocket_port = int(server_config.get("port", 8000))
-
-    logger.bind(tag=TAG).info(
-        "Websocket地址是\tws://{}:{}/xiaozhi/v1/",
-        get_local_ip(),
-        websocket_port,
-    )
-
-    logger.bind(tag=TAG).info(
-        "=======上面的地址是websocket协议地址，请勿用浏览器访问======="
-    )
-    logger.bind(tag=TAG).info(
-        "如想测试websocket请用谷歌浏览器打开test目录下的test_page.html"
-    )
+    # 显示协议连接信息
+    connection_info = xiaozhi_server.get_connection_info()
+    
+    # WebSocket信息
+    websocket_info = connection_info.get('websocket', {})
+    if websocket_info.get('enabled', False):
+        websocket_port = websocket_info.get('port', 8000)
+        logger.bind(tag=TAG).info(
+            "WebSocket地址是\tws://{}:{}/xiaozhi/v1/",
+            get_local_ip(),
+            websocket_port,
+        )
+    
+    # MQTT信息
+    mqtt_info = connection_info.get('mqtt', {})
+    if mqtt_info.get('enabled', False):
+        mqtt_port = mqtt_info.get('port', 1883)
+        udp_port = mqtt_info.get('udp_port', 1883)
+        logger.bind(tag=TAG).info(
+            "MQTT地址是\t\tmqtt://{}:{}",
+            get_local_ip(),
+            mqtt_port,
+        )
+        logger.bind(tag=TAG).info(
+            "UDP音频端口是\t{}:{}",
+            get_local_ip(),
+            udp_port,
+        )
+    
+    # 显示启用的协议
+    enabled_protocols = xiaozhi_server.config.get('enabled_protocols', [])
+    logger.bind(tag=TAG).info(f"启用的协议: {', '.join(enabled_protocols)}")
+    
+    if 'websocket' in enabled_protocols:
+        logger.bind(tag=TAG).info(
+            "=======上面的WebSocket地址请勿用浏览器访问======="
+        )
+        logger.bind(tag=TAG).info(
+            "如想测试WebSocket请用谷歌浏览器打开test目录下的test_page.html"
+        )
+    
+    if 'mqtt' in enabled_protocols:
+        logger.bind(tag=TAG).info(
+            "=======MQTT客户端ID格式: GID_test@@@mac_address@@@uuid======="
+        )
+    
     logger.bind(tag=TAG).info(
         "=============================================================\n"
     )
@@ -116,15 +145,25 @@ async def main():
     except asyncio.CancelledError:
         print("任务被取消，清理资源中...")
     finally:
+        # 停止小智服务器
+        try:
+            await xiaozhi_server.stop()
+        except Exception as e:
+            logger.error(f"停止小智服务器失败: {e}")
+        
         # 取消所有任务（关键修复点）
         stdin_task.cancel()
-        ws_task.cancel()
+        xiaozhi_task.cancel()
         if ota_task:
             ota_task.cancel()
 
         # 等待任务终止（必须加超时）
+        tasks_to_wait = [stdin_task, xiaozhi_task]
+        if ota_task:
+            tasks_to_wait.append(ota_task)
+            
         await asyncio.wait(
-            [stdin_task, ws_task, ota_task] if ota_task else [stdin_task, ws_task],
+            tasks_to_wait,
             timeout=3.0,
             return_when=asyncio.ALL_COMPLETED,
         )