On Fri, 11 Sep 2015, John Levine wrote:
It was definitely a victory for open standads when Google and Facebook adopted XMPP for their systems. The people I know at both companies are pretty reasonable, so if they're diverging from the specs it's unlikely to be just to be gratuitously incompatible.
Could you ask your the people you know why Google Talk Service does not support server-to-server encryption via TLS mandated by RFC 3920 in 2004? Here are some links about how these protocol changes were not gratuitous: http://www.disruptivetelephony.com/2015/02/google-finally-kills-off-googletalk-and-xmpp-jabber-integration.html https://developers.facebook.com/docs/chat http://xmpp.org/2015/03/no-its-not-the-end-of-xmpp-for-google-talk/ Paul