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iosopensslapple-push-notificationsdjango-push-notifications

SSLError: [Errno 1] _ssl.c:510: error:1409442E:SSL routines:SSL3_READ_BYTES:tlsv1 alert protocol version

django-push-notifications was working with both sandbox and production certificates. But since yesterday it is failing with following errors.

SSLError: [Errno 1] _ssl.c:510: error:1409442E:SSL routines:SSL3_READ_BYTES:tlsv1 alert protocol version

No change in our code or our servers. Any ideas, why it has stopped working.

UPDATE

OpenSSL 1.0.1f 6 Jan 2014 Ubuntu: 14.04

I upgraded to OpenSSL 1.1.1a 20 Nov 2018 but same results.

I also checked TLS version supported by my python using following and got "TLS 1.3".

python -c "import requests; print(requests.get('https://www.howsmyssl.com/a/check', verify=False).json()['tls_version'])"

Solution

  • Looks like it was an apple server issue. And it has been resolved now. Push notifications are now working as expected.