Difficulty catching an exception

Development
1

I’m trying to embrace python a little more but I’m having problems catching a particular error. Here is the traceback.

2017-03-01 12:20:25.210662 WARNING Traceback (most recent call last):
  File "/usr/local/lib/python3.4/dist-packages/appdaemon/appdaemon.py", line 602, in worker
    function(ha.sanitize_timer_kwargs(args["kwargs"]))
  File "/home/homeassistant/code/appdaemon/calalarm/calalarm.py", line 194, in checkifcalchanged
    self.schedulealarm(self.roomowners[owner]["room"])
  File "/home/homeassistant/code/appdaemon/calalarm/calalarm.py", line 266, in schedulealarm
    meeting=self.getMeetings(self.roomowners[o]["calendar"])
  File "/home/homeassistant/code/appdaemon/calalarm/calalarm.py", line 280, in getMeetings
    response = request.execute()
  File "/usr/local/lib/python3.4/dist-packages/oauth2client/_helpers.py", line 133, in positional_wrapper
    return wrapped(*args, **kwargs)
  File "/usr/local/lib/python3.4/dist-packages/googleapiclient/http.py", line 835, in execute
    method=str(self.method), body=self.body, headers=self.headers)
  File "/usr/local/lib/python3.4/dist-packages/googleapiclient/http.py", line 175, in _retry_request
    raise exception
  File "/usr/local/lib/python3.4/dist-packages/googleapiclient/http.py", line 162, in _retry_request
    resp, content = http.request(uri, method, *args, **kwargs)
  File "/usr/local/lib/python3.4/dist-packages/oauth2client/transport.py", line 175, in new_request
    redirections, connection_type)
  File "/usr/local/lib/python3.4/dist-packages/oauth2client/transport.py", line 282, in request
    connection_type=connection_type)
  File "/usr/local/lib/python3.4/dist-packages/httplib2/__init__.py", line 1322, in request
    (response, content) = self._request(conn, authority, uri, request_uri, method, body, headers, redirections, cachekey)
  File "/usr/local/lib/python3.4/dist-packages/httplib2/__init__.py", line 1072, in _request
    (response, content) = self._conn_request(conn, request_uri, method, body, headers)
  File "/usr/local/lib/python3.4/dist-packages/httplib2/__init__.py", line 1025, in _conn_request
    response = conn.getresponse()
  File "/usr/lib/python3.4/http/client.py", line 1172, in getresponse
    response.begin()
  File "/usr/lib/python3.4/http/client.py", line 351, in begin
    version, status, reason = self._read_status()
  File "/usr/lib/python3.4/http/client.py", line 313, in _read_status
    line = str(self.fp.readline(_MAXLINE + 1), "iso-8859-1")
  File "/usr/lib/python3.4/socket.py", line 371, in readinto
    return self._sock.recv_into(b)
  File "/usr/lib/python3.4/ssl.py", line 745, in recv_into
    return self.read(nbytes, buffer)
  File "/usr/lib/python3.4/ssl.py", line 617, in read
    v = self._sslobj.read(len, buffer)
ssl.SSLError: [SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1769)

2017-03-01 12:20:25.211232 WARNING ------------------------------------------------------------
2017-03-01 12:20:25.211663 WARNING ------------------------------------------------------------

This is ok, and really just needs to wait till the next loop and try again. I tried

try:
statement that throws this error
except SSLError
also tried
except ssl.SSLError

Both say that SSLError or ssl.SSLError are not defined. How do I trap this?

2

Maybe import ssl?

3

I think I tried that before, but maybe not. We’ll see if it keeps going the next time it hits it. I put a log message in there where I catch it to let me know if it got executed and escaped ok.

4

Can you post lines from your app where you’re attempting to catch this exception? Likely in getMeetings in calalarm.py

and what are your imports

5

so far it’s looking like just including ssl did it. I thought I had done that before, but maybe not. On the other hand, I’ve been changing some things in several modules tonight so it may have happened and I just didn’t catch it. I know where the error is getting thrown and I think it’s google timing out on me. If I just restart the app, it will fun fine for a while ( maybe an hour, maybe a week). I’ll let it run overnight and see if I catch it tomorrow. but it’s literally as simple as I posted above. My question is really about how do I determine what value or name to put on the except line.

6 
import ssl

try:
    # some_logic
except ssl.SSLError as e:
    # recovery_logic_here

Should totally work! :slight_smile:

Optionally, you could also do. Both ways are correct, and precise.

import ssl
from ssl import SSLError

try:
    # some_logic
except SSLError as e:
    # recovery_logic_here