RFI emulator exception: Future <Future pending> attached to a different loop

[Chrzi]

Python version: 3.9
tanner version: latest master

During handling an RFI request the following exception pop up in the tanner error log and the request is not logged.

Can be reproduced by simply sending a GET request like this: http://127.0.0.1/test?v=http://test.localhost

What I noticed during debugging was that the loop running the handle() method is a different one from the self._loop set during initialization to asyncio.get_event_loop() .

Aside from this exception, it would probably be good to wrap the emulators handle() method into a try except block and return "unknown" as the detection in case of an exception.

2022-02-08 11:05:22 ERROR:aiohttp.server:log_exception: Error handling request
Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/aiohttp/web_protocol.py", line 435, in _handle_request
    resp = await request_handler(request)
  File "/usr/lib/python3.9/site-packages/aiohttp/web_app.py", line 504, in _handle
    resp = await handler(request)
  File "/usr/lib/python3.9/site-packages/Tanner-0.6.0-py3.9.egg/tanner/server.py", line 58, in handle_event
    detection = await self.base_handler.handle(data, session)
  File "/usr/lib/python3.9/site-packages/Tanner-0.6.0-py3.9.egg/tanner/emulators/base.py", line 190, in handle
    detection = await self.emulate(data, session)
  File "/usr/lib/python3.9/site-packages/Tanner-0.6.0-py3.9.egg/tanner/emulators/base.py", line 172, in emulate
    detection = await self.handle_get(session, data)
  File "/usr/lib/python3.9/site-packages/Tanner-0.6.0-py3.9.egg/tanner/emulators/base.py", line 148, in handle_get
    possible_get_detection = await self.get_emulation_result(session, get_data, self.get_emulators)
  File "/usr/lib/python3.9/site-packages/Tanner-0.6.0-py3.9.egg/tanner/emulators/base.py", line 120, in get_emulation_result
    emulation_result = await self.emulators[detection["name"]].handle(attack_params[detection["name"]], session)
  File "/usr/lib/python3.9/site-packages/Tanner-0.6.0-py3.9.egg/tanner/emulators/rfi.py", line 99, in handle
    result = await self.get_rfi_result(attack_params[0]["value"])
  File "/usr/lib/python3.9/site-packages/Tanner-0.6.0-py3.9.egg/tanner/emulators/rfi.py", line 80, in get_rfi_result
    await asyncio.sleep(1, loop=self._loop)
  File "/usr/lib/python3.9/asyncio/tasks.py", line 655, in sleep
    return await future
RuntimeError: Task <Task pending name='Task-4351832' coro=<RequestHandler._handle_request() running at /usr/lib/python3.9/site-packages/aiohttp/web_protocol.py:435> cb=[<TaskWakeupMethWrapper object at 0x7f3a74b13ca0>()]> got Future <Future pending> attached to a different loop