Refreshing access token - timeout problems

[rgerbranda]

Hi,

I'm strugling with timeouts, especialy for the procedure 'Refreshing access token'. Where can I set the timeout for this procedure?

I have set the timeout for Connection, but this one is different.

Below is a part of the log when 'Refreshing access token' fails.

Traceback (most recent call last):
  File "/usr/local/lib/python3.13/site-packages/urllib3/connectionpool.py", line 468, in _make_request
    six.raise_from(e, None)
    ~~~~~~~~~~~~~~^^^^^^^^^
  File "<string>", line 3, in raise_from
  File "/usr/local/lib/python3.13/site-packages/urllib3/connectionpool.py", line 463, in _make_request
    httplib_response = conn.getresponse()
  File "/usr/local/lib/python3.13/http/client.py", line 1430, in getresponse
    response.begin()
    ~~~~~~~~~~~~~~^^
  File "/usr/local/lib/python3.13/http/client.py", line 331, in begin
    version, status, reason = self._read_status()
                              ~~~~~~~~~~~~~~~~~^^
  File "/usr/local/lib/python3.13/http/client.py", line 292, in _read_status
    line = str(self.fp.readline(_MAXLINE + 1), "iso-8859-1")
               ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/socket.py", line 719, in readinto
    return self._sock.recv_into(b)
           ~~~~~~~~~~~~~~~~~~~~^^^
  File "/usr/local/lib/python3.13/ssl.py", line 1304, in recv_into
    return self.read(nbytes, buffer)
           ~~~~~~~~~^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/ssl.py", line 1138, in read
    return self._sslobj.read(len, buffer)
           ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
TimeoutError: [Errno 110] Operation timed out

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.13/site-packages/requests/adapters.py", line 667, in send
    resp = conn.urlopen(
        method=request.method,
    ...<9 lines>...
        chunked=chunked,
    )
  File "/usr/local/lib/python3.13/site-packages/urllib3/connectionpool.py", line 802, in urlopen
    retries = retries.increment(
        method, url, error=e, _pool=self, _stacktrace=sys.exc_info()[2]
    )
  File "/usr/local/lib/python3.13/site-packages/urllib3/util/retry.py", line 552, in increment
    raise six.reraise(type(error), error, _stacktrace)
          ~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/urllib3/packages/six.py", line 770, in reraise
    raise value
  File "/usr/local/lib/python3.13/site-packages/urllib3/connectionpool.py", line 716, in urlopen
    httplib_response = self._make_request(
        conn,
    ...<5 lines>...
        chunked=chunked,
    )
  File "/usr/local/lib/python3.13/site-packages/urllib3/connectionpool.py", line 470, in _make_request
    self._raise_timeout(err=e, url=url, timeout_value=read_timeout)
    ~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/urllib3/connectionpool.py", line 358, in _raise_timeout
    raise ReadTimeoutError(
        self, url, "Read timed out. (read timeout=%s)" % timeout_value
    )
urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='login.microsoftonline.com', port=443): Read timed out. (read timeout=None)

[alejcas]

Pass a tuple:

:param float or tuple timeout: How long to wait for the server to send data before giving up, as a float, or a tuple (connect timeout, read timeout)

[rgerbranda]

Hi @alejcas
Are you sure this is working for a token refresh? As in the error log I see timeout=None and not the passed tuple:

HTTPSConnectionPool(host='login.microsoftonline.com', port=443): Read timed out. (read timeout=None)

[alejcas]

Let me see

[alejcas]

The refresh is done by msal so the timeout was not honoured there. I'll try to fix it

[rgerbranda]

Thanks a lot!

[alejcas]

Fixed in 52b21f3

timeout, proxies and verify_ssl is now passed to the msal hhttp client

[rgerbranda]

Thanks for the improvement!

I continued debugging. I think the timeout error is caused by a bug in the urllib3 library.
On my Windows 11 - Docker system Python O365 is working fine. A connection to login.microsoft.com is re-established when the socket connection is dropped ([urllib3.connectionpool] Resetting dropped connection: login.microsoftonline.com)

On my Raspberry Pi OS - Docker system urllib3 is failing on the point of a dropped socket connection. Instead it tries to continue a dropped connection I guess.

I will close the discussion as I think the problem is elsewhere.