Today I installed a Wildcard SSL Certificate on my server which is running NGINX 1.8.0. I mainly needed it for mail security. But figured what else can I do with it. So now looking into SPDY or HTTP/2 support. My question is if I use SPDY or HTTP/2 do I have move my website to https;//??? This is something I do not want to do, as I have so much on the site that is coming from other sites (such as ads, image attachments, etc.) and do not want my users getting a message that the page they are viewing has both secure and unsecure elements on it. But I still would like to take advantage of the speed that SPDY / HTTP/2 offers. So can this be done?