Frontier silicon integration (AFSAPI) raises exception when radio is not plugged in

[Deadolus]

Home Assistant release with the issue:
0.100.2

Last working Home Assistant release (if known):
NONE

Operating environment (Hass.io/Docker/Windows/etc.):
Docker via hassio_install.sh

Integration:
https://www.home-assistant.io/integrations/frontier_silicon/

Description of problem:
The Frontier Silicon integration does not seem to take in to account that a radio could be powered off and off the network.
The connection times out and a error is raised endlessly in a loop (see below).
The integration should handle the timeout in the connection and set the state of previously found devices as "unavailable" or similar (not "off").

Problem-relevant configuration.yaml entries and (fill out even if it seems unimportant):

media_player:
  - platform: frontier_silicon
    host: 192.168.1.5
    password: 1234

Traceback (if applicable):

2019-10-22 07:59:42 INFO (MainThread) [root] AFSAPI Exception: Traceback (most recent call last):                                                                                                                  
  File "/usr/local/lib/python3.7/site-packages/afsapi/__init__.py", line 101, in call                                                                                                                              
    self.__webfsapi = yield from self.get_fsapi_endpoint()                                                                                                                                                         
  File "/usr/local/lib/python3.7/site-packages/afsapi/__init__.py", line 81, in get_fsapi_endpoint                                                                                                                 
    endpoint = yield from self.__session.get(self.fsapi_device_url, timeout = self.timeout)                                                                                                                        
  File "/usr/local/lib/python3.7/site-packages/aiohttp/client.py", line 582, in _request                                                                                                                           
    break                                                                                                                                                                                                          
  File "/usr/local/lib/python3.7/site-packages/aiohttp/helpers.py", line 586, in __exit__                                                                                                                          
    raise asyncio.TimeoutError from None                                                                                                                                                                           
concurrent.futures._base.TimeoutError                                                                                                                                                                              
                                                                                                                                                                                                                   
2019-10-22 07:59:50 INFO (MainThread) [root] AFSAPI Exception: Traceback (most recent call last):                                                                                                                  
  File "/usr/local/lib/python3.7/site-packages/afsapi/__init__.py", line 101, in call                                                                                                                              
    self.__webfsapi = yield from self.get_fsapi_endpoint()                                                                                                                                                         
  File "/usr/local/lib/python3.7/site-packages/afsapi/__init__.py", line 81, in get_fsapi_endpoint                                                                                                                 
    endpoint = yield from self.__session.get(self.fsapi_device_url, timeout = self.timeout)                                                                                                                        
  File "/usr/local/lib/python3.7/site-packages/aiohttp/client.py", line 582, in _request                                                                                                                           
    break                                                                                                                                                                                                          
  File "/usr/local/lib/python3.7/site-packages/aiohttp/helpers.py", line 586, in __exit__                                                                                                                          
    raise asyncio.TimeoutError from None                                                                                                                                                                           
concurrent.futures._base.TimeoutError  
2019-10-22 07:59:52 INFO (MainThread) [root] AFSAPI Exception: Traceback (most recent call last):                                                                                                                  
  File "/usr/local/lib/python3.7/site-packages/aiohttp/connector.py", line 936, in _wrap_create_connection                                                                                                         
    return await self._loop.create_connection(*args, **kwargs)  # type: ignore  # noqa                                                                                                                             
  File "/usr/local/lib/python3.7/asyncio/base_events.py", line 954, in create_connection                                                                                                                           
    raise exceptions[0]                                                                                                                                                                                            
  File "/usr/local/lib/python3.7/asyncio/base_events.py", line 941, in create_connection                                                                                                                           
    await self.sock_connect(sock, address)                                                                                                                                                                         
  File "/usr/local/lib/python3.7/asyncio/selector_events.py", line 464, in sock_connect                                                                                                                            
    return await fut                                                                                                                                                                                               
  File "/usr/local/lib/python3.7/asyncio/selector_events.py", line 494, in _sock_connect_cb                                                                                                                        
    raise OSError(err, f'Connect call failed {address}')                                                                                                                                                           
OSError: [Errno 113] Connect call failed ('192.168.1.5', 80)                                                                                                                                                       
                                                                                                                                                                                                                   
The above exception was the direct cause of the following exception:                                                                                                                                               
                                                                                                                                                                                                                   
Traceback (most recent call last):                                                                                                                                                                                 
  File "/usr/local/lib/python3.7/site-packages/afsapi/__init__.py", line 101, in call                                                                                                                              
    self.__webfsapi = yield from self.get_fsapi_endpoint()                                                                                                                                                         
  File "/usr/local/lib/python3.7/site-packages/afsapi/__init__.py", line 81, in get_fsapi_endpoint                                                                                                                 
    endpoint = yield from self.__session.get(self.fsapi_device_url, timeout = self.timeout)                                                                                                                        
  File "/usr/local/lib/python3.7/site-packages/aiohttp/client.py", line 483, in _request                                                                                                                           
    timeout=real_timeout                                                                                                                                                                                           
  File "/usr/local/lib/python3.7/site-packages/aiohttp/connector.py", line 523, in connect                                                                                                                         
    proto = await self._create_connection(req, traces, timeout)                                                                                                                                                    
  File "/usr/local/lib/python3.7/site-packages/aiohttp/connector.py", line 859, in _create_connection                                                                                                              
    req, traces, timeout)                                                                                                                                                                                          
  File "/usr/local/lib/python3.7/site-packages/aiohttp/connector.py", line 1004, in _create_direct_connection                                                                                                      
    raise last_exc                                                                                                                                                                                                 
  File "/usr/local/lib/python3.7/site-packages/aiohttp/connector.py", line 986, in _create_direct_connection                                                                                                       
    req=req, client_error=client_error)                                                                                                                                                                            
  File "/usr/local/lib/python3.7/site-packages/aiohttp/connector.py", line 943, in _wrap_create_connection                                                                                                         
    raise client_error(req.connection_key, exc) from exc                                                                                                                                                           
aiohttp.client_exceptions.ClientConnectorError: Cannot connect to host 192.168.1.5:80 ssl:None [Connect call failed ('192.168.1.5', 80)]                                                                           
                                                                                                                                                

Additional information:
Background: I have my radio on a physical on/off electricity switch - it is usually off if no one is in the kitchen.
If the switch is on and the radio connected to the internet the integration works as expected.
I found the error by "docker attach" to the running homeassistant container.

[stale]

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