[python-users] SSL errors in trying to access THREDDS data

• To: python-users@xxxxxxxxxxxxxxxx
• Subject: [python-users] SSL errors in trying to access THREDDS data
• From: Erika Roesler <eroesler@xxxxxxxxx>
• Date: Thu, 12 Sep 2019 21:45:11 -0600

Hello, I am not sure if this is a proxy problem and can be fixed with
settings, but I cannot run the GOES Aircraft example.

I have already set verify=False in ~/.condarc and tried different locations
to change proxies.

Here's the full error, and any insight into this is greatly appreciated.

python GOES_aircraft.py

Traceback (most recent call last):

  File "/anaconda3/lib/python3.7/site-packages/urllib3/connection.py", line
159, in _new_conn

    (self._dns_host, self.port), self.timeout, **extra_kw)

  File "/anaconda3/lib/python3.7/site-packages/urllib3/util/connection.py",
line 80, in create_connection

    raise err

  File "/anaconda3/lib/python3.7/site-packages/urllib3/util/connection.py",
line 70, in create_connection

    sock.connect(sa)

TimeoutError: [Errno 60] Operation timed out


During handling of the above exception, another exception occurred:


Traceback (most recent call last):

  File "/anaconda3/lib/python3.7/site-packages/urllib3/connectionpool.py",
line 594, in urlopen

    self._prepare_proxy(conn)

  File "/anaconda3/lib/python3.7/site-packages/urllib3/connectionpool.py",
line 805, in _prepare_proxy

    conn.connect()

  File "/anaconda3/lib/python3.7/site-packages/urllib3/connection.py", line
301, in connect

    conn = self._new_conn()

  File "/anaconda3/lib/python3.7/site-packages/urllib3/connection.py", line
168, in _new_conn

    self, "Failed to establish a new connection: %s" % e)

urllib3.exceptions.NewConnectionError:
<urllib3.connection.VerifiedHTTPSConnection object at 0x1a246c5828>: Failed
to establish a new connection: [Errno 60] Operation timed out


During handling of the above exception, another exception occurred:


Traceback (most recent call last):

  File "/anaconda3/lib/python3.7/site-packages/requests/adapters.py", line
449, in send

    timeout=timeout

  File "/anaconda3/lib/python3.7/site-packages/urllib3/connectionpool.py",
line 638, in urlopen

    _stacktrace=sys.exc_info()[2])

  File "/anaconda3/lib/python3.7/site-packages/urllib3/util/retry.py", line
399, in increment

    raise MaxRetryError(_pool, url, error or ResponseError(cause))

urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='thredds.ucar.edu',
port=443): Max retries exceeded with url:
/thredds/catalog/satellite/goes/east/products/CloudAndMoistureImagery/CONUS/Channel08/20190913/catalog.xml
(Caused by ProxyError('Cannot connect to proxy.',
NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at
0x1a246c5828>: Failed to establish a new connection: [Errno 60] Operation
timed out')))


During handling of the above exception, another exception occurred:


Traceback (most recent call last):

  File "GOES_aircraft.py", line 56, in <module>

    ds = get_goes_image()

  File "GOES_aircraft.py", line 47, in get_goes_image

    'catalog.xml'.format(region, channel, date))

  File "/anaconda3/lib/python3.7/site-packages/siphon/catalog.py", line
256, in __init__

    resp = session.get(catalog_url)

  File "/anaconda3/lib/python3.7/site-packages/requests/sessions.py", line
546, in get

    return self.request('GET', url, **kwargs)

  File "/anaconda3/lib/python3.7/site-packages/requests/sessions.py", line
533, in request

    resp = self.send(prep, **send_kwargs)

  File "/anaconda3/lib/python3.7/site-packages/requests/sessions.py", line
646, in send

    r = adapter.send(request, **kwargs)

  File "/anaconda3/lib/python3.7/site-packages/requests/adapters.py", line
510, in send

    raise ProxyError(e, request=request)

requests.exceptions.ProxyError: HTTPSConnectionPool(host='thredds.ucar.edu',
port=443): Max retries exceeded with url:
/thredds/catalog/satellite/goes/east/products/CloudAndMoistureImagery/CONUS/Channel08/20190913/catalog.xml
(Caused by ProxyError('Cannot connect to proxy.',
NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at
0x1a246c5828>: Failed to establish a new connection: [Errno 60] Operation
timed out')))

• Follow-Ups:
  • Re: [python-users] SSL errors in trying to access THREDDS data
    • From: kikocorreoso