import aiohttp
from typing import Optional


def create_http_session(timeout: Optional[aiohttp.ClientTimeout] = None) -> aiohttp.ClientSession:
    """
    Создаем сессию для запросов к бэку
    """
    if timeout is None:
        timeout = aiohttp.ClientTimeout(total=30, connect=10)
    
    connector = aiohttp.TCPConnector(
        limit=100,
        limit_per_host=30
    )
    
    return aiohttp.ClientSession(
        connector=connector,
        timeout=timeout,
        headers={
            "Accept": "application/json"
        }
    )