Streamed request bodies and cookie jars can still crash the process at exit #612

import asyncio, socket, sys, time, types
import impit

class SlowTeardown:  # stands in for a big app's interpreter teardown
    def __del__(self, _now=time.perf_counter):
        end = _now() + 0.6
        while _now() < end:
            pass

m = types.ModuleType('_slow'); m.obj = SlowTeardown(); sys.modules['_slow'] = m; del m
server = socket.create_server(('127.0.0.1', 0))  # accepts the upload, never responds

def body():
    while True:
        time.sleep(0.3)  # user code on a tokio thread, GIL released
        yield b'x'

async def main():
    async with impit.AsyncClient() as client:
        try:
            await asyncio.wait_for(client.post(f'http://127.0.0.1:{server.getsockname()[1]}/', content=body()), 0.1)
        except TimeoutError:
            pass

asyncio.run(main())