Get certificate and add it to a Java truststore, when only having https URL?

Question

I\'m trying to send push notifications to Android devices through the Google Cloud Message servers.

The URL we use to do that is:

https://android.goo         


        

Answer 1

If you have openssl you can use

openssl s_client -connect android.googleapis.com:443

s_client is a "generic SSL/TLS client which connects to a remote host using SSL/TLS", and among other things it prints out the server certificate it received from the remote server. It isn't an HTTP client, so it doesn't know to follow the 301 redirect, it'll just give you the certificate of the initial server you connected to.