TLS error

[dmytronasyrov]

There is a new problem appeared today after I have updated deps. Google says possibly it's tls version error. Any idea how to fix it?

** (Mix) Could not start application pigeon: Pigeon.start(:normal, []) returned an error: shutdown: failed to start child: :default
    ** (EXIT) bad return value: {:error, {:tls_alert, 'handshake failure'}}

[hpopp]

Generally these kinds of errors deal with the cert itself. Have you made sure your push certificate hasn't expired?

[dmytronasyrov]

openssl s_client -connect gateway.sandbox.push.apple.com:2195 -cert cert.pem -key key.pem
says both files are ok. Both chatterbox and kadabra return handshake failure. I have already regenerated certificates 3 times. Tried in dev and prod modes on 443 and 2197. No luck

[hpopp]

From cursory research it might be something similar to edgurgel/httpoison#164. I may need to force the TLS version on kadabra connections.

[dmytronasyrov]

Now I'm sure it's not related to my certificate itself. I just sent a push notification to my iphone via curl.
TLS version should be 1.2

[dmytronasyrov]

This is not a pigeon's or kadabra bug. How to fix:
benoitc/hackney#387

[motephyr]

hi, i meet the issue, and it's is from beam 20.3.
https://bugs.erlang.org/browse/ERL-599
someone who meet the issue could try to use beam 20.2.