[1] [CITE[https - What's the de facto standard for a Reverse Proxy to tell the backend SSL is used? - Stack Overflow]]
( ([TIME[2014-10-24 15:47:09 +09:00]] 版))
<http://stackoverflow.com/questions/16042647/whats-the-de-facto-standard-for-a-reverse-proxy-to-tell-the-backend-ssl-is-used>