migrate to aiohttp

utils/middlewares.py

@@ -0,0 +1,8 @@
+import asyncio
+
+from aiohttp import ClientRequest, ClientResponse, ClientHandlerType
+
+class SemaphoreMiddleware(asyncio.Semaphore):
+    async def __call__(self, req: ClientRequest, handler: ClientHandlerType) -> ClientResponse:
+        async with self:
+            return await handler(req)