Swallow async timeout in check_fish

confluent_server/confluent/discovery/protocols/ssdp.py

@@ -538,7 +538,7 @@ async def check_fish(urldata, port=443, verifycallback=None):
     try:
         wc = webclient.WebConnection(_get_svrip(data), port, verifycallback=verifycallback, timeout=3)
         peerinfo = await wc.grab_json_response(url, headers={'Accept': 'application/json', 'Host': 'credible-bmc'})
-    except socket.error:
+    except (socket.error, asyncio.exceptions.TimeoutError):
         return None
     if url == '/DeviceDescription.json':
         if not peerinfo: