BaseConnector not closing all sockets

gistfile1.py

import asyncio
import traceback
from aiohttp import *


def test():
    connector = TCPConnector()
    finished = []

    @asyncio.coroutine
    def make_request():
        r = yield from request('get', 'http://yahoo.com', connector=connector)
        finished.append(r)

    tasks = [asyncio.async(make_request()) for _ in range(100)]

    def cancel():
        while not finished:
            yield from asyncio.sleep(0.5)
        print("cancelling tasks")
        for t in tasks:
            t.cancel()

    loop = asyncio.get_event_loop()
    loop.run_until_complete(asyncio.wait([asyncio.async(cancel())] + tasks))
    print("DONE")
    loop.run_forever()

test()