Web Push error » cURL error 35: Unknown SSL protocol error in connection to fcm.googleapis.com:443 (see http://curl.haxx.se/libcurl/c/libcurl-errors.html)
Web Push error » cURL error 28: Connection timed out after 30036 milliseconds (see http://curl.haxx.se/libcurl/c/libcurl-errors.html)
I can see a couple of these errors on my log, I think its better to share with you, it may be relevant.
Web Push error » cURL error 6: Could not resolve host: updates.push.services.mozilla.com (see http://curl.haxx.se/libcurl/c/libcurl-errors.html)
Web Push error with code 502 » Server error:
POST https://updates.push.services.mozilla.com/wpush/v2/gAAAAABbex2xqxstB9E08t4VdRxjUZ2EUCk8mFOsRnutU1S9gK_Iw6xAFerV1f2lY56jVmuok9ih0_bcjcIGherJFzF-XG6rjpkQEB1ZCeM3qYSGAhNi63sdsy_oucKmZIyk2OdhhTbYHsK0jKB0mXPN0OTohSRUFvxSkh1PxQDkaNHG3PctEuoresulted in a
502 Bad Gatewayresponse:
Web Push error » cURL error 35: Unknown SSL protocol error in connection to fcm.googleapis.com:443 (see http://curl.haxx.se/libcurl/c/libcurl-errors.html)
Web Push error » cURL error 28: Connection timed out after 30036 milliseconds (see http://curl.haxx.se/libcurl/c/libcurl-errors.html)