feat: 项目初始化、完成基本流式传输和语音识别功能

backend/app/services/llm_request.py

@@ -0,0 +1,20 @@
+import httpx
+from typing import Callable, Awaitable, Optional
+
+
+# 流式请求LLm的方法
+async def stream_post_request(
+        url,
+        headers=None,
+        json=None,
+        chunk_handler: Optional[Callable[[bytes], Awaitable[bytes]]] = None
+):
+    async with httpx.AsyncClient(http2=True) as client:
+        async with client.stream(
+                method="POST", url=url, headers=headers, json=json
+        ) as response:
+            async for chunk in response.aiter_bytes():
+                if chunk_handler:
+                    # 支持异步处理
+                    chunk = await chunk_handler(chunk)
+                yield chunk