file_service.py

async def get_file_by_short_name(self, short_name: shortuuid) -> StreamingResponse:
        file = await self.__repository.get_by_short_name(short_name=short_name)

        async def s3_stream():
            async with aiohttp.ClientSession() as session:
                result = await self.__storage.get_object_response_by_path(
                    session=session, bucket=settings.bucket_name, path=file.path_in_storage
                )
                async for chunk in result.content.iter_chunked(32 * 1024):
                    yield chunk

        filename = file.filename.encode('utf-8')

        return StreamingResponse(
            content=s3_stream(), media_type=file.file_type, headers={'Content-Disposition': f'filename="{filename}"'}
        )