Finally traced out why my Weewx isn't posting to WU

[David Barto]

Oct 19 13:32:27 Magrathea weewx[52934]: restx: Wunderground-PWS: Failed upload attempt 3: <urlopen error [SSL: TLSV1_ALERT_PROTOCOL_VERSION] tlsv1 alert protocol version (_ssl.c:590)>


Since the throw from the post in restx.py (line 443)

_response = self.post_request(request, data)

was getting captured, however since the logging was DEBUG nothing showed up. I changed the logging to ALERT and lo- the problem was uncovered.

This is with 3.9.2, running on a very old MacOS 10.11.6. No the hardware won’t go beyond this version.
This was working for a few days, then it started failing again, without changes.

Any ideas what certs need update?

David

[Tom Keffer]

Most likely your version of OpenSSL and/or Python are outdated. 

A bit of Googling reveals: https://stackoverflow.com/questions/44316292/ssl-sslerror-tlsv1-alert-protocol-version

Try the suggestions there.

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[David Barto]

Will 3.9.2 work with python3? I’m unsure of the version the switchover from python2 to python3 occurred.

David

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[Tom Keffer]

No. 

Support for Python 3 started with Version 4.0.0, released 30-April-2020.

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