Merge pull request facebookarchive#50 from evanadelman/master

SSL detection breaks in NGINX

Author: oyvindkinsey

src/base_facebook.php

@@ -1148,10 +1148,16 @@ protected function getHttpProtocol() {
       }
       return 'http';
     }
+    /*apache + variants specific way of checking for https*/
     if (isset($_SERVER['HTTPS']) &&
         ($_SERVER['HTTPS'] === 'on' || $_SERVER['HTTPS'] == 1)) {
       return 'https';
     }
+    /*nginx way of checking for https*/
+    if (isset($_SERVER['SERVER_PORT']) &&
+        ($_SERVER['SERVER_PORT'] === '443')) {
+      return 'https';
+    }
     return 'http';
   }