Clients SHOULD NOT include a Referer header field in a (non-secure) HTTP request if the referring page was transferred with a secure protocol.
<input id="referrer" type="hidden" name="referrer" /><script type="text/javascript">document.getElementById("referrer").value = window.location.href</script>
string urlReferrer = "";if (Request.UrlReferrer == null){urlReferrer = Request["referrer"];- }
else{urlReferrer = Request.UrlReferrer.AbsoluteUri;}
https和http 调用过程中请求头 referrer 获取不到的问题
原文：http://www.cnblogs.com/tangruixin/p/5969305.html