Python aiohttp connection test

main.py

# edit0: fixed typo 'timeout_finallly' -> 'timeout_finally', update output
# edit1: added the closed status of each response to the output
# edit2: print aiohttp version

import asyncio
import aiohttp
import json

class DummyResponse(object):
    closed = 'UNDEFINED'
    _connection = None

    @staticmethod
    def close():
        pass

    @staticmethod
    async def read():
        pass

async def fetch(case):
    res = DummyResponse()
    try:
        res = await asyncio.wait_for(aiohttp.request('GET', URLS[case]), 10)
        if 'cancelled' in case:
            await asyncio.sleep(10)
        body = await asyncio.wait_for(res.read(),
                                      .00000000001 if 'timeout' in case else 10)
    except asyncio.TimeoutError:
        error_msg = 'Request timed out'
    except aiohttp.ServerDisconnectedError as err:
        error_msg = 'Server disconnected error: {}'.format(err)
    except aiohttp.ClientError as err:
        error_msg = 'Request connection error: {}'.format(err)
    finally:
        if 'finally' in case:
            res.close()
        RESULTS[case] = ('Connection closed: %s, Response closed: %s' %
                         (True if res._connection is None
                          else res._connection.closed, res.closed))

async def run(case):
    task = LOOP.create_task(fetch(case))
    await asyncio.sleep(5)
    task.cancel()
    await task

LOOP = asyncio.get_event_loop()
CASES = ('timeout_finally', 'cancelled_finally',
         'normal', 'timeout', 'cancelled')
URLS = {'normal': 'http://speedtest-fra1.digitalocean.com/10mb.test',
        'timeout': 'http://speedtest-lon1.digitalocean.com/10mb.test',
        'cancelled': 'http://speedtest-ams2.digitalocean.com/10mb.test',
        'cancelled_finally': 'http://speedtest-ams3.digitalocean.com/10mb.test',
        'timeout_finally': 'http://speedtest-nyc1.digitalocean.com/10mb.test'}
RESULTS = {}

print('aiohttp: %s' % aiohttp.__version__)
LOOP.run_until_complete(asyncio.gather(
    *[LOOP.create_task(run(case))
      for case in CASES],
    return_exceptions=True))
print(json.dumps(RESULTS, indent=4, sort_keys=True))

results.md

aiohttp: 2.2.0

aiohttp: 2.2.0
Unclosed client session
client_session: <aiohttp.client.ClientSession object at 0x7f3b05f9c208>
Unclosed client session
client_session: <aiohttp.client.ClientSession object at 0x7f3b05f8eb38>
Unclosed client session
client_session: <aiohttp.client.ClientSession object at 0x7f3b05f8ef98>
Unclosed client session
client_session: <aiohttp.client.ClientSession object at 0x7f3b05f8ed68>
{
    "cancelled": "Connection closed: False, Response closed: False",
    "cancelled_finally": "Connection closed: True, Response closed: True",
    "normal": "Connection closed: True, Response closed: True",
    "timeout": "Connection closed: False, Response closed: False",
    "timeout_finally": "Connection closed: True, Response closed: True"
}
Unclosed client session
client_session: <aiohttp.client.ClientSession object at 0x7f3b05f9c438>
Unclosed connection
client_connection: Connection<('speedtest-ams2.digitalocean.com', 80, False)>

aiohttp: 2.1.0

aiohttp: 2.1.0
{
    "cancelled": "Connection closed: True, Response closed: False",
    "cancelled_finally": "Connection closed: True, Response closed: True",
    "normal": "Connection closed: True, Response closed: False",
    "timeout": "Connection closed: True, Response closed: False",
    "timeout_finally": "Connection closed: True, Response closed: True"
}
Unclosed connection
client_connection: Connection<('speedtest-ams2.digitalocean.com', 80, False)>

aiohttp: 2.0.7

aiohttp: 2.0.7
{
    "cancelled": "Connection closed: True, Response closed: False",
    "cancelled_finally": "Connection closed: True, Response closed: True",
    "normal": "Connection closed: True, Response closed: False",
    "timeout": "Connection closed: True, Response closed: False",
    "timeout_finally": "Connection closed: True, Response closed: True"
}
Unclosed connection
client_connection: Connection<('speedtest-ams2.digitalocean.com', 80, False)>

aiohttp: 2.0.0

aiohttp: 2.0.0
{
    "cancelled": "Connection closed: False, Response closed: False",
    "cancelled_finally": "Connection closed: True, Response closed: True",
    "normal": "Connection closed: True, Response closed: True",
    "timeout": "Connection closed: False, Response closed: False",
    "timeout_finally": "Connection closed: True, Response closed: True"
}
Unclosed connection
client_connection: Connection<('speedtest-ams2.digitalocean.com', 80, False)>