bz1052821 As this is the server side we do not need to provide a hint to the SSLEngine as to what is connecting, if a SSLSession is going to be re-used that would be decided on the client side.
bz1148565 The idle timeout is supposed to be 5 minutes, not 30 seconds.

This gives client browsers an opportunity to handle their own keep-alive timeouts allowing for SSLSession re-use on re-establishment of the connection.